WORLDBASE

WORLDBASE Players FM Elgersma, Onno

Stockfish
GameID: 0
FIDE Country B-Year Gender Standard Rapid Blitz
1053531 NED 2004 M 2340 2344 2372
838 games
2026.07.19 1st Amsterdam CF Open
3479534 FM Labruyere, Roger (2202) FM Elgersma, Onno (2356) 1/2-1/2
1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.d3 Be7 5.O-O O-O 6.c3 d5 7.exd5 Nxd5 8.Re1 Bg4 9.h3 Bh5 10.Nbd2 Nb6 11.Bb5 f6 12.Nf1 Be8 13.d4 Nxd4 14.Bxe8 Nxf3+ 15.Qxf3 Qxe8 16.Qxb7 Bd6 17.Be3 f5 18.Nd2 Qe6 19.Nf3 e4 20.Nd4 Qe5 21.g3 Qf6 22.f4 Nc4 23.Bf2 Qf7 24.b3 Nb2 25.Re2 Nd3 26.Be3 a6 27.Qc6 Kh8 28.Rf1 Rab8 29.Qxa6 Rb6 30.Qa5 Bc5 31.b4 Bxd4 32.Bxd4 Rh6 33.Rh2 Rg6 34.Rg2 Qc4 35.Qa3 e3 36.Bxe3 Re8 37.Bd2 h5 38.Qb3 Qe4 39.h4 Kh7 40.Qd1 Rg4 41.Qf3 Qc4 42.Kh2 Re6 43.Re2 Reg6 44.Rg1 c5 45.Re3 Nxf4 46.Qf2 Qxa2 47.Rf3 Nd5 48.Rxf5 Nf6 49.Bg5 Qxf2+ 50.Rxf2 cxb4 51.Bxf6 1/2-1/2
2026.07.18 1st Amsterdam CF Open
3479516 FM Elgersma, Onno (2356) FM Schoorl, R (2284) 0-1
1.Nf3 g6 2.e4 c5 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 d6 6.g3 Nc6 7.Nxc6 bxc6 8.e5 dxe5 9.Qxd8+ Kxd8 10.Bg2 Kc7 11.O-O Rb8 12.Be3 a5 13.b3 Nd7 14.Rad1 f5 15.Na4 e6 16.Bd2 Bb4 17.c3 Be7 18.c4 Bb4 19.Bc1 Re8 20.a3 Bf8 21.Bd2 Ra8 22.Bc3 e4 23.f3 exf3 24.Rxf3 e5 25.g4 Nc5 26.Rh3 h6 27.Nxc5 Bxc5+ 28.Kf1 Bf8 29.gxf5 Bxf5 30.Re3 e4 31.b4 axb4 32.axb4 h5 33.Be1 Bd6 34.b5 Bxh2 35.Bf2 Bf4 36.b6+ Kb7 37.Rc3 e3 38.Bxe3 Rxe3 39.Rxe3 Bxe3 40.Rd6 Ra1+ 41.Ke2 Ra2+ 42.Kxe3 Rxg2 43.c5 Rc2 44.Kd4 Rd2+ 0-1
2026.07.16 1st Amsterdam CF Open
3479498 Ten Kate, Gustav (2019) FM Elgersma, Onno (2356) 0-1
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O d6 6.Re1 Bd7 7.c3 g6 8.d4 Bg7 9.Nbd2 O-O 10.Bc2 Nh5 11.dxe5 Nxe5 12.Nxe5 dxe5 13.Nf3 h6 14.Be3 Qe7 15.Bb3 Rad8 16.Qc2 Bg4 17.Nd2 Qf6 18.Bc4 Nf4 19.f3 Bc8 20.Rad1 h5 21.g3 Nh3+ 22.Kg2 h4 23.Nb3 Ng5 24.Be2 h3+ 25.Kf2 Bh6 26.Rxd8 Rxd8 27.Rd1 Rf8 28.Qd3 b6 29.Bc1 Qe7 30.Kg1 a5 31.Na1 Qc5+ 32.Kh1 Qf2 33.Rg1 Ba6 34.c4 Bxc4 0-1
2026.07.15 1st Amsterdam CF Open
3479479 FM Elgersma, Onno (2356) Schilstra, Laurens (2194) 0-1
1.e4 c6 2.Nc3 d5 3.Nf3 Bg4 4.h3 Bh5 5.Qe2 e6 6.g4 Bg6 7.Ne5 Ne7 8.d4 Nd7 9.Nxg6 hxg6 10.Bf4 Qa5 11.a3 dxe4 12.Qxe4 Nd5 13.Bd2 N7f6 14.Qf3 Qc7 15.Ne2 Nb6 16.Bg2 Bd6 17.Kf1 O-O-O 18.b3 e5 19.c4 exd4 20.c5 Bxc5 21.Rc1 Bxa3 22.Ra1 Qe7 23.g5 Nfd5 24.Nxd4 Bb2 25.Re1 Qd7 26.h4 Kb8 27.Ne2 Ka8 28.h5 Rxh5 29.Rxh5 gxh5 30.Qxh5 Qf5 31.Kg1 Qc2 32.Ba5 g6 33.Qh7 Qf5 34.Ng3 Qf4 35.Re4 Qc1+ 36.Re1 Qc5 37.Bd2 Qf8 38.Ne4 Ba3 39.Ra1 Be7 40.Re1 Bb4 41.Qh4 Bxd2 42.Nxd2 Re8 43.Rxe8+ Qxe8 44.Ne4 a6 45.Qg3 Ne7 46.Qe5 Nd7 47.Qa5 Nf5 48.b4 Ka7 49.b5 cxb5 50.Qc7 Qe6 51.Nc3 Qe1+ 52.Bf1 Nb6 53.Qc5 Qe7 54.Nxb5+ axb5 55.Qxb5 Qxg5+ 56.Kh1 Qh4+ 57.Kg1 Qg4+ 58.Kh1 Qd4 59.Bg2 Qxf2 60.Qa5+ Kb8 61.Qe5+ Kc8 62.Bxb7+ Kd8 63.Qh8+ Kd7 64.Bc6+ Kd6 65.Qf6+ Kc5 66.Qe5+ Kc4 67.Qb5+ Kc3 68.Qa5+ Kb2 69.Qb4+ Kc1 70.Qc3+ Qc2 71.Qa1+ Kd2 72.Qa5+ Qc3 73.Qxb6 Qh3+ 74.Kg1 Qe3+ 75.Qxe3+ Kxe3 76.Kg2 Kf4 77.Ba4 Nd6 78.Bc2 f5 79.Kg1 Kg3 0-1
2026.07.14 1st Amsterdam CF Open
3479467 Van der Plas, R (2119) FM Elgersma, Onno (2356) 0-1
1.d4 Nf6 2.c4 e6 3.Nc3 d5 4.Nf3 h6 5.cxd5 exd5 6.Bf4 Bd6 7.Ne5 O-O 8.e3 Re8 9.Bd3 Nbd7 10.Nxd7 Qxd7 11.Bxd6 Qxd6 12.h3 Qf4 13.O-O Qh4 14.Qf3 c6 15.Bf5 Ne4 16.g3 Qe7 17.Bxc8 Raxc8 18.Nxe4 dxe4 19.Qf5 Rcd8 20.Rac1 Rd5 21.Qg4 Rg5 22.Qe2 Qe6 23.h4 Rf5 24.a3 Rf3 25.Qc4 Qg4 26.Rc2 Re6 27.Kh2 Ref6 28.d5 Kh7 29.dxc6 bxc6 30.Kg2 Rg6 31.Rfc1 Rxg3+ 32.fxg3 Qxg3+ 33.Kh1 Qh3+ 0-1
2026.07.13 1st Amsterdam CF Open
3479459 FM Elgersma, Onno (2356) Khatniuk, Anastasiia (2022) 1-0
1.Nf3 d5 2.g3 Nf6 3.Bg2 e6 4.O-O Bd6 5.d3 O-O 6.Nc3 h6 7.e4 dxe4 8.Nxe4 Nxe4 9.dxe4 e5 10.c3 Be6 11.Nh4 Nd7 12.Nf5 Bxf5 13.exf5 Rb8 14.Be3 a5 15.a3 Qc8 16.h4 Nf6 17.g4 Nh7 18.Qf3 Qd8 19.Qg3 Qf6 20.Rad1 Be7 21.Rd7 Qxh4 22.Qxh4 Bxh4 23.Rxc7 Nf6 24.Ba7 Rbc8 25.Rxb7 Rc4 26.b4 Rxg4 27.bxa5 Nh5 28.Be3 Ra8 29.Rb4 Nf4 30.Bxf4 exf4 31.Kh2 Rxa5 32.Bf3 Rg5 33.Kh3 Rxa3 34.Kxh4 Rxc3 35.Rxf4 g6 36.fxg6 Rxg6 37.Bd5 Rc7 38.Re1 Kg7 39.Re3 Rd7 40.Bb3 f6 41.Re8 Rc7 42.Be6 Rg5 43.Rg8+ Kh7 44.Rf8 Re5 45.R4xf6 Kg7 46.Bh3 Re4+ 47.Rf4 Rcc4 48.Kg3 Rc3+ 49.f3 Re7 50.R8f5 Rc6 51.Rg4+ Kh7 52.Rf8 Rc5 53.Bf1 Rd7 54.Bc4 Rg5 55.Rxg5 hxg5 56.Rf7+ 1-0
2026.07.12 1st Amsterdam CF Open
3469068 FM Wunnink, M (2187) FM Elgersma, Onno (2356) 1-0
1.Nf3 Nf6 2.c4 c5 3.g3 Nc6 4.Bg2 d5 5.O-O e5 6.cxd5 Nxd5 7.Nc3 Nc7 8.d3 Be7 9.Nd2 O-O 10.Nc4 f6 11.f4 exf4 12.gxf4 Be6 13.f5 Bf7 14.Bxc6 bxc6 15.Ne4 Nd5 16.b3 Kh8 17.Qe1 g6 18.Bb2 gxf5 19.Rxf5 Bg6 20.Rf3 Bh5 21.Rf5 Rg8+ 22.Kh1 Bg6 23.Rf3 Bh5 24.Rf5 Bg4 25.Ne5 Qf8 26.Nxg4 Rxg4 27.Qf2 Rg6 28.Rf1 Re8 29.Ng3 Qh6 30.Nh5 Bd8 31.e4 Ne3 32.Nxf6 Bxf6 33.Rxf6 Rxf6 34.Bxf6+ Kg8 35.Rg1+ Kf7 36.Bg5+ 1-0
2026.07.11 1st Amsterdam CF Open
3469060 FM Elgersma, Onno (2356) Brienen, Jacob (2090) 1-0
1.Nf3 c5 2.e4 e6 3.d4 cxd4 4.Nxd4 Nc6 5.Nc3 Nf6 6.a3 Be7 7.Nxc6 bxc6 8.e5 Nd5 9.Ne4 Qc7 10.f4 Qb6 11.Qd3 f5 12.Nd6+ Bxd6 13.exd6 a5 14.c4 Nf6 15.Be3 c5 16.Rd1 Bb7 17.Be2 Bxg2 18.Rg1 Be4 19.Qc3 Kf7 20.Qe5 a4 21.Bxc5 Qa5+ 22.Bb4 Qxe5 23.fxe5 Ng4 24.Bxg4 fxg4 25.Rxg4 Bf5 26.Rg3 Rac8 27.c5 h5 28.h4 Rhf8 29.Rc1 Be4 30.Ke2 g6 31.Ke3 Bf5 32.Ba5 Rc6 33.Rc4 Ra8 34.Bb6 Bg4 35.Rg2 Kg7 36.Rf2 1-0
2026.04.11 Dutch League 2025-26
2237935 IM Braun, Christi2 (2392) FM Elgersma, Onno (2360) 1/2-1/2
1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.d3 Be7 5.Nc3 d6 6.a3 O-O 7.h3 Be6 8.Nd5 Re8 9.O-O h6 10.Re1 Bf8 11.b4 Bxd5 12.exd5 Ne7 13.d4 e4 14.Nd2 Nexd5 15.Bxd5 Nxd5 16.Nxe4 b5 17.Qf3 c6 18.Bd2 Qh4 19.a4 a6 20.Qg4 Qxg4 21.hxg4 Nb6 22.a5 Nc4 23.Bc3 f6 24.Nd2 Kf7 25.Nxc4 bxc4 26.Rad1 Rxe1+ 27.Rxe1 Rb8 28.Bd2 Rb5 29.f3 Rd5 30.Be3 Be7 31.Kf2 Ke8 32.c3 Kd7 33.Rh1 Rb5 34.Rd1 Bd8 35.Ke2 Bc7 36.Rh1 Rb8 37.Rh5 Re8 38.Kd2 Bb8 39.Bf2 Ba7 40.Be3 Rb8 41.Rf5 Ke7 42.Rh5 Rb7 43.Ke2 Bb8 44.Kd2 Ke6 45.Ke2 Bc7 46.Kd2 Bd8 47.Bf2 Be7 48.Be3 Bf8 49.Kc2 Rb5 50.Rxb5 cxb5 51.Kd2 f5 52.Ke2 Kf6 53.Bf4 Kg6 54.Ke3 h5 55.gxh5+ Kxh5 56.Bh2 Kg5 57.Bf4+ Kf6 58.g4 Be7 59.Bg3 Ke6 60.gxf5+ Kxf5 61.Ke2 d5 62.Ke3 Bg5+ 63.Ke2 Bh6 64.Be5 g6 65.Bg3 g5 66.Be5 g4 67.fxg4+ Kxg4 68.Kd1 Kf3 69.Kc2 Bg5 70.Bd6 Ke3 71.Bc5 Ke4 1/2-1/2
2026.03.28 Dutch League 2025-26
2237908 FM Dovgaliuk, Oleksandr (2299) FM Elgersma, Onno (2360) 1-0
1.e4 e5 2.d4 exd4 3.Qxd4 Nc6 4.Qe3 Nf6 5.Nc3 Bb4 6.Bd2 O-O 7.O-O-O d6 8.a3 Bc5 9.Qg3 Qe7 10.Bd3 Nd4 11.Qh4 c6 12.Bg5 Ne6 13.Bxf6 Qxf6 14.Qxf6 gxf6 15.f3 b5 16.Kb1 a5 17.a4 b4 18.Nce2 Rb8 19.Bc4 Nc7 20.Nd4 Rb6 21.Nb3 Be6 22.Nxc5 dxc5 23.Bxe6 Nxe6 24.Ne2 c4 25.Rd6 Nc5 26.Nd4 Nxa4 27.Nxc6 Kg7 28.Rhd1 Ra8 29.Ne7 Rxd6 30.Rxd6 c3 31.b3 Nb2 32.Nd5 Rc8 33.g4 Rc5 34.h4 a4 35.Nxb4 h5 36.Rd5 hxg4 37.fxg4 Rc8 38.Na2 axb3 39.cxb3 Nd1 40.Kc1 c2 41.Rd2 Nc3 42.Nxc3 Rxc3 43.b4 Rc4 44.b5 Rb4 45.Rd5 Rxe4 46.Kxc2 Rxg4 47.h5 Kf8 48.Kc3 Ke7 49.b6 f5 50.Rxf5 Ke6 51.Rb5 Rg8 52.b7 Rb8 53.h6 Kd7 54.h7 Kc7 55.Rc5+ 1-0
2026.03.07 Dutch League 2025-26
2204794 FM Elgersma, Onno (2356) GM Korneev, O (2422) 1/2-1/2
1.Nf3 d5 2.g3 Bg4 3.Bg2 Nd7 4.h3 Bh5 5.d4 e6 6.O-O c6 7.c4 Ngf6 8.cxd5 exd5 9.Qb3 Qb6 10.Qe3+ Be7 11.Nh4 Bg6 12.Nc3 Qd8 13.b4 a6 14.a4 Nb6 15.Nxg6 hxg6 16.Rb1 Nc4 17.Qd3 b5 18.Bg5 O-O 19.a5 Re8 20.h4 Qc7 21.Rfd1 Rad8 22.Bf3 Qc8 23.Kg2 Qf5 24.Qxf5 gxf5 25.Bxf6 Bxf6 26.e3 Be7 27.Ne2 Bd6 28.Nc1 g6 29.Nd3 Kg7 30.Rh1 Rh8 31.Rbd1 Rde8 32.Rh3 f6 33.Rdh1 Rh6 34.h5 g5 35.g4 f4 36.exf4 gxf4 37.Rd1 Rh7 38.Rhh1 Kh6 39.Kh3 Kg5 40.Rde1 Rhe7 41.Rxe7 Rxe7 42.Kg2 Kh6 43.Rc1 Kg5 44.Rc2 Re3 45.Nc1 Ra3 46.Re2 Rc3 47.Na2 Ra3 48.Nc1 Rc3 49.Na2 Ra3 1/2-1/2
2026.02.07 Dutch League 2025-26
2192551 FM Victor, Julian (2214) FM Elgersma, Onno (2356) 0-1
1.d4 Nf6 2.c4 e6 3.Nc3 d5 4.cxd5 exd5 5.Bg5 c6 6.e3 h6 7.Bh4 Be7 8.Bd3 O-O 9.Nge2 Re8 10.Qc2 Nbd7 11.a4 a5 12.O-O Nb8 13.Rad1 Na6 14.Qd2 Nb4 15.Bb1 Ne4 16.Bxe7 Qxe7 17.Bxe4 dxe4 18.Ng3 f5 19.d5 Rd8 20.d6 Qe5 21.f3 exf3 22.Rxf3 Be6 23.e4 fxe4 24.Re3 Bb3 25.Rxe4 Qc5+ 26.Qd4 Qxd4+ 27.Rdxd4 Rd7 28.Re5 Bc2 29.Nh5 Bg6 30.Nf4 Bf7 31.Ne6 b6 32.Rg4 Bxe6 33.Rxe6 Kh7 34.Rd4 Rad8 35.Ne4 Nd5 36.Rd2 Rf8 37.g3 Rdf7 38.Nc3 Nf6 39.d7 Nxd7 40.Rxc6 Ne5 0-1
2026.02.01 Tata Steel Top Tienkamp
2171720 IM Carow, J (2469) FM Elgersma, Onno (2369) 1-0
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.cxd5 exd5 5.Bg5 c6 6.e3 h6 7.Bh4 Be7 8.Bd3 O-O 9.f3 Re8 10.Nge2 Nbd7 11.a4 a5 12.Bf2 Nb8 13.Qd2 Na6 14.Rd1 Nb4 15.Bb1 b6 16.O-O Ba6 17.e4 dxe4 18.fxe4 Ng4 19.Qf4 Qd7 20.e5 Bg5 21.Qf3 Nxf2 22.Rxf2 Bc4 23.g3 Nd5 24.Nxd5 Bxd5 25.Qd3 g6 26.h4 Be7 27.Nf4 Bf8 28.h5 Qg4 29.hxg6 fxg6 30.Nxd5 cxd5 31.Rf4 Qh5 32.Rf6 Bg7 33.Rxg6 Ra7 34.Rxb6 Rf7 35.Ba2 Kh8 36.Bxd5 Rff8 37.Kg2 Rd8 38.Rh1 Qg5 39.Rg6 Qf5 40.Qxf5 Rxf5 41.Be6 Rff8 42.Rg4 Rb8 43.b3 Rb4 44.Bc4 1-0
2026.01.31 Tata Steel Top Tienkamp
2171718 FM Elgersma, Onno (2369) IM Gloeckler, Christian (2444) 0-1
1.c4 Nf6 2.g3 e6 3.Bg2 d5 4.Nf3 Be7 5.O-O O-O 6.d4 Nbd7 7.Qc2 a5 8.Bg5 c6 9.Nbd2 h6 10.Bxf6 Nxf6 11.Rad1 b6 12.e4 Bb7 13.e5 Ne8 14.cxd5 cxd5 15.Rfe1 Nc7 16.h4 Qd7 17.Nf1 Rfc8 18.Qb1 b5 19.Kh2 Qd8 20.Ne3 b4 21.Bh3 a4 22.Rg1 Ba6 23.Rde1 Nb5 24.g4 Bxh4 25.g5 Bxg5 26.Rxg5 hxg5 27.Rg1 Kf8 28.Nxg5 Nxd4 29.Qd1 Ne2 30.Bxe6 d4 31.Nf5 Qa5 32.Nh7+ Ke8 33.f4 fxe6 34.Rxg7 exf5 35.Qe1 Rc7 36.Nf6+ Kf8 37.Rg5 Rg7 38.Qh4 Rxg5 39.Qxg5 Qd8 40.Qg8+ Ke7 41.Qh7+ Ke6 42.Ng8 Qxg8 43.Qh6+ Kd5 44.Qd6+ Ke4 45.Qc6+ Ke3 0-1
2026.01.30 Tata Steel Top Tienkamp
2171711 IM Beukema, S (2394) FM Elgersma, Onno (2369) 0-1
1.f4 d5 2.Nf3 c5 3.g3 g6 4.Bg2 Bg7 5.O-O Nh6 6.d3 d4 7.c3 O-O 8.e4 dxe3 9.Bxe3 Qc7 10.Qe2 Nd7 11.a4 Nf6 12.Na3 Be6 13.Ng5 Bg4 14.Qf2 Bf5 15.h3 Bxd3 16.Rfd1 Rad8 17.Bxc5 Nfg4 18.hxg4 Nxg4 19.Rxd3 Nxf2 20.Rxd8 Nh3+ 21.Kh2 Rxd8 22.Ne4 Nxf4 23.Nb5 Qe5 24.gxf4 Qxf4+ 25.Kg1 Be5 26.Bxa7 h5 27.Nf2 Rd7 28.Nd4 h4 29.Nf3 Bf6 30.a5 g5 31.Nh2 Rd2 32.Bxb7 Rxb2 33.Bg2 Bxc3 34.a6 Bd4 35.Bxd4 Qxd4 36.Rf1 Ra2 37.Bb7 Kg7 38.Nf3 Qe3 39.Bd5 Rxa6 40.Re1 Qf4 41.Rxe7 Ra1+ 42.Ne1 Qd6 0-1
2026.01.28 Tata Steel Top Tienkamp
2171708 FM Elgersma, Onno (2369) FM Van Foreest, Machteld (2330) 1-0
1.d4 Nf6 2.c4 g6 3.Nf3 Bg7 4.e3 O-O 5.Be2 d6 6.Nc3 Re8 7.O-O a5 8.a3 Nc6 9.d5 Nb8 10.e4 Na6 11.Be3 e6 12.Qc2 Qe7 13.Nd2 exd5 14.cxd5 Ng4 15.Bxg4 Bxg4 16.Nc4 b6 17.Rae1 Bd7 18.Kh1 a4 19.f4 b5 20.Nd2 Rab8 21.Ne2 f5 22.Ng3 Qf6 23.Ba7 Rb7 24.e5 dxe5 25.fxe5 Rxe5 26.Bd4 Rxe1 27.Bxf6 Rxf1+ 28.Ngxf1 Bxf6 29.Ne3 Rb8 30.Nf3 Kg7 31.d6 c6 32.h4 Re8 33.Nd1 Re6 34.Nf2 Rxd6 35.Nh3 c5 36.h5 c4 37.Qc1 Nc5 38.h6+ Kg8 39.Nhg5 Nd3 40.Qe3 f4 41.Qa7 Be7 42.Qb8+ Bf8 43.Nxh7 1-0
2026.01.27 Tata Steel Top Tienkamp
2171702 IM Tudor, Henry Edward (2434) FM Elgersma, Onno (2369) 1-0
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 Nc6 5.Bg5 dxc4 6.e4 h6 7.Bxf6 Qxf6 8.Bxc4 g5 9.Bb5 Bg7 10.Ne5 O-O 11.Bxc6 bxc6 12.Nxc6 Re8 13.Rc1 Bb7 14.Ne2 Qg6 15.f3 g4 16.Kf2 Qh5 17.Rc5 Qh4+ 18.g3 Qf6 19.f4 Qg6 20.Qc2 Rad8 21.Ke3 Rd6 22.Ne5 Bxe5 23.fxe5 Rb6 24.Nf4 Qg5 25.Rxc7 Rd8 26.b3 Rb4 27.Rd1 a5 28.Qc5 Ra8 29.Rc1 Rd8 30.Rc4 Rxc4 31.Qxc4 Bxe4 32.Kxe4 Qf5+ 33.Ke3 Qb1 34.Ne2 Qh1 35.Rc8 1-0
2026.01.26 Tata Steel Top Tienkamp
2165683 FM Elgersma, Onno (2369) IM Hrbek, Stepan (2454) 0-1
1.d4 Nf6 2.Nf3 d5 3.c4 e6 4.Nc3 Be7 5.g3 O-O 6.Bg2 Nc6 7.Ne5 Nxe5 8.dxe5 Nd7 9.cxd5 Nxe5 10.O-O exd5 11.Nxd5 Bd6 12.Qc2 c6 13.Nc3 Qe7 14.b3 h5 15.Bb2 h4 16.Rad1 h3 17.Bh1 f5 18.Rd4 Ng4 19.e3 Bc5 20.Ne2 Bxd4 21.Bxd4 Rd8 22.Nf4 Be6 23.Nxh3 Rac8 24.Nf4 c5 25.Ba1 c4 26.bxc4 Bxc4 27.Qxf5 Nxe3 28.Qh5 Bf7 29.Qe2 Bc4 30.Qh5 Rc5 31.Ng6 Rxh5 32.Nxe7+ Kf7 33.Rc1 Kxe7 34.fxe3 Bd5 35.e4 Bc6 36.Bf3 Ra5 37.Bxg7 Rxa2 38.Bh6 Rd4 39.Bg5+ Ke6 40.Bg4+ Ke5 41.Bf4+ Kxe4 42.Be6 Bd5 43.Bd7 a6 44.h4 Kd3 45.Rd1+ Kc4 46.Rc1+ Kb3 47.Rb1+ Kc4 48.Rc1+ Kb3 49.Rb1+ Kc2 50.Rc1+ Kb2 51.Re1 Rc4 52.h5 Rc2 53.Bh3 Kb3 54.Rd1 Rh2 55.Rxd5 Rxh3 56.h6 b5 57.g4 Kc4 58.Rd2 Rxd2 59.Bxd2 Rg3+ 60.Kh2 Rxg4 61.Kh3 Rg8 62.Kh4 b4 63.Bc1 Rh8 64.Kg5 a5 65.Bb2 Rxh6 0-1
2026.01.25 Tata Steel Top Tienkamp
2165676 FM Baselmans, Luuk (2406) FM Elgersma, Onno (2369) 1/2-1/2
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.c3 d5 9.exd5 Nxd5 10.Nxe5 Nxe5 11.Rxe5 Bb7 12.d4 Bf6 13.Re1 Re8 14.Na3 b4 15.cxb4 Rxe1+ 16.Qxe1 Bxd4 17.Nc2 Bb6 18.Qe5 Qd7 19.Be3 Re8 20.Qg3 Nxe3 21.fxe3 Kh8 22.Qf2 f5 23.Rf1 Qc6 24.Nd4 Qg6 25.Nxf5 Rxe3 26.Nh4 Qf6 27.Qxf6 gxf6 28.Kh1 Re4 29.Nf3 Rxb4 30.Rd1 a5 31.Rd8+ Kg7 32.Rd7+ Kf8 33.Rf7+ Ke8 34.Rxf6 a4 35.Re6+ Kf8 36.Rf6+ Ke7 37.Re6+ Kd8 38.Bc2 Bd5 39.Re2 Rxb2 40.Rd2 Ke7 41.Bxa4 Rb1+ 42.Rd1 Rxd1+ 43.Bxd1 Bxa2 44.g4 c5 45.Bc2 h6 46.Kg2 Bd5 47.h4 c4 48.Kg3 Be3 49.Ne5 c3 50.Ng6+ Kd6 51.Nf4 Bc4 52.Kf3 Bd2 53.g5 hxg5 54.hxg5 Ke5 55.Ng6+ Kd4 56.Nf4 Bxf4 57.Kxf4 Bd3 58.Bb3 Bg6 59.Ba4 Bh7 60.Bb3 Bd3 61.Ba4 Bg6 62.Bd1 Kd3 63.Bb3 Kd2 64.Ke5 Bf7 65.Ba4 Be8 66.Bb3 Kc1 67.Kf6 Kb2 68.Bd1 Ka3 69.g6 Bxg6 70.Kxg6 c2 71.Bxc2 1/2-1/2
2026.01.24 Tata Steel Top Tienkamp
2165671 FM Elgersma, Onno (2369) IM Lohia, Sohum (2410) 1-0
1.d4 d5 2.c4 e6 3.Nf3 Nf6 4.g3 Be7 5.Bg2 O-O 6.O-O Nbd7 7.Qc2 a5 8.Rd1 dxc4 9.Qxc4 b5 10.Qxb5 Ba6 11.Qc6 Bxe2 12.Re1 Ra6 13.Qc2 Bb5 14.Ng5 Nb8 15.Nc3 Bc6 16.d5 exd5 17.Bf4 g6 18.Rad1 d4 19.Nce4 Rb6 20.Be5 Nfd7 21.Bf4 Nf6 22.h4 Nxe4 23.Nxe4 Bxe4 24.Rxe4 c5 25.Bh6 Nc6 26.Bxf8 Bxf8 27.Qe2 Rb8 28.b3 Nb4 29.Qc4 Qd5 30.Rexd4 Qxc4 31.Rxc4 Nxa2 32.Rd7 Nb4 33.h5 Re8 34.hxg6 hxg6 35.Rf4 Re7 36.Rxe7 Bxe7 37.Bf1 Kg7 38.Re4 Bf6 39.Re8 Bd4 40.Bc4 Nc6 41.Ra8 f5 42.Kg2 Ne5 43.Ra7+ Kf6 44.Ra6+ Kg7 45.Rxa5 g5 46.Ra7+ Kf6 47.f4 gxf4 48.gxf4 Nxc4 49.bxc4 Kg6 50.Kf3 Kf6 51.Rd7 Ke6 52.Rd5 Bg1 53.Rd1 Bd4 54.Ke2 Kd6 55.Rd3 Kc6 56.Kd2 Kd6 57.Kc2 Kc6 58.Kb3 Kd6 59.Ka4 Ke6 60.Kb5 Bg1 61.Kc6 Bh2 62.Rf3 Bg1 63.Rf1 Bd4 64.Re1+ Kf6 65.Kd5 Kg6 66.Ke6 1-0
2025.12.30 61st Groningen Open 2025
2146258 FM Krishnan, Ritvik (2265) FM Elgersma, Onno (2366) 1-0
1.d4 d5 2.c4 e6 3.Nf3 Nf6 4.Nc3 Nbd7 5.Bf4 Bb4 6.cxd5 Nxd5 7.Bd2 c5 8.e4 Nxc3 9.bxc3 Ba5 10.Bd3 cxd4 11.cxd4 O-O 12.O-O Bxd2 13.Qxd2 Nf6 14.Rfe1 b6 15.Rad1 Bb7 16.Qf4 h6 17.Bb1 Rc8 18.d5 exd5 19.e5 Nh7 20.h4 Rc4 21.Nd4 Qc7 22.Bd3 Ra4 23.Qg3 Bc8 24.Rc1 Qe7 25.Nc6 Qe8 26.Bb5 Rg4 27.Qa3 Kh8 28.Nxa7 Qe6 29.Rc6 Qf5 30.Nxc8 Rxc8 31.Rxc8+ Qxc8 32.Rc1 Qf8 33.Qa6 Qb4 34.a3 Qf4 35.Qc8+ Nf8 36.Be2 Rxh4 37.g3 Qe4 38.Qxf8+ Kh7 39.gxh4 Qxe2 40.Qb4 1-0
2025.12.29 61st Groningen Open 2025
2146240 FM Elgersma, Onno (2366) IM De Jong, M (2263) 1-0
1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 a6 5.Be2 Nf6 6.Qd3 d6 7.c4 Be7 8.Nc3 O-O 9.O-O Nbd7 10.Qg3 Qc7 11.Bh6 Ne8 12.Be3 Ne5 13.Rac1 Bd7 14.f4 Nc6 15.Nf3 Nf6 16.Bd3 Rad8 17.Qh3 Bc8 18.Bb1 Rfe8 19.g4 Nd7 20.g5 Bf8 21.Kh1 g6 22.Qh4 b6 23.Rg1 Bg7 24.Rg3 Ne7 25.f5 exf5 26.exf5 gxf5 27.Nd5 Nxd5 28.cxd5 Nc5 29.Bd4 Bxd4 30.Nxd4 Qe7 31.Nc6 Qe2 32.Rh3 Qxb2 33.Qxh7+ Kf8 34.Rg1 Qg7 35.Nxd8 Rxd8 36.Qh8+ Qxh8 37.Rxh8+ Ke7 38.Re1+ Kd7 39.Bxf5+ Kc7 40.Re7+ 1-0
2025.12.28 61st Groningen Open 2025
2141223 FM Duijker, R (2148) FM Elgersma, Onno (2366) 1-0
1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 dxe4 5.Nxe4 Be7 6.Nxf6+ Bxf6 7.Bxf6 Qxf6 8.Nf3 O-O 9.Qe2 Nc6 10.O-O-O Bd7 11.Kb1 Rad8 12.Qe4 Nb4 13.Qxb7 c5 14.Qe4 cxd4 15.Bd3 Nxd3 16.Rxd3 Bb5 17.Rxd4 Rc8 18.Rhd1 Bc6 19.Qe5 Qe7 20.Qd6 Qf6 21.Qe5 Qe7 22.Qd6 Qb7 23.Rb4 Qa8 24.Qf4 a5 25.Rc4 f6 26.Qd6 Bd5 27.Rxc8 Rxc8 28.Nd4 Rd8 29.Qe7 Re8 30.Qd7 Rd8 31.Qe7 Re8 32.Qd7 g6 33.f3 a4 34.b3 a3 35.c4 Rd8 36.Qc7 Rc8 37.Qe7 Re8 38.Qxf6 Qa5 39.Nb5 Bxc4 40.bxc4 Qb4+ 41.Ka1 e5 42.Rb1 Qxc4 43.Qd6 Ra8 44.Qxe5 Rd8 45.Nxa3 Qc8 46.Re1 Rd2 47.Qe8+ Qxe8 48.Rxe8+ Kf7 49.Re4 Rxg2 50.h4 h5 51.Nc4 g5 52.hxg5 Kg6 53.f4 h4 54.Ne3 Rg1+ 55.Kb2 h3 56.Re6+ Kg7 57.Nf5+ Kg8 58.Rh6 Rg2+ 59.Kb3 Rh2 60.Ng3 1-0
2025.12.27 61st Groningen Open 2025
2141204 FM Elgersma, Onno (2366) FM Schuricht, Emil Frederick (2262) 1-0
1.Nf3 d5 2.c4 e6 3.g3 dxc4 4.Bg2 Nd7 5.Qa4 a6 6.Qxc4 b5 7.Qh4 Be7 8.Qg4 h5 9.Qe4 Rb8 10.h4 Bb7 11.Qc2 c5 12.Nc3 Ngf6 13.O-O O-O 14.b3 Rc8 15.a4 Qb6 16.axb5 axb5 17.Bb2 Rfd8 18.d3 Nb8 19.Qc1 Nc6 20.Qg5 g6 21.Na4 bxa4 22.Bxf6 Bxf6 23.Qxf6 axb3 24.Rfb1 Ra8 25.Ng5 Qc7 26.Rxb3 Rxa1+ 27.Qxa1 Na5 28.Ra3 Bxg2 29.Kxg2 Nc6 30.Qf6 Qe7 31.Qxe7 Nxe7 32.Ra7 Kf8 33.Nh7+ Ke8 34.Nf6+ Kf8 35.Nd7+ Ke8 36.Nxc5 Nc6 37.Rc7 Nd4 38.e3 Nb5 39.Rb7 Nd6 40.Ra7 Nb5 41.Ra5 Nc3 42.d4 Rb8 43.Ra3 Nd5 44.Kf3 Rb2 45.Ra8+ Ke7 46.Ra7+ Kf8 47.Nd7+ Kg8 48.Ne5 Nc3 49.Nxf7 Nd1 50.Ng5 Rxf2+ 51.Ke4 Rf5 52.Ra8+ Kg7 53.Nxe6+ Kf6 54.Nf4 Rb5 55.Ra6+ Kf7 56.Ra7+ Ke8 57.Nxg6 Rb3 58.Ra8+ Kf7 59.Ne5+ Kg7 60.Ra7+ Kg8 61.Nc4 Rc3 62.Ra4 Nf2+ 63.Kf5 Ng4 64.Kg6 Kf8 65.Kxh5 Nxe3 66.Nxe3 Rxe3 67.g4 1-0
2025.12.26 61st Groningen Open 2025
2141172 FM Van Roon, Sjoerd (2284) FM Elgersma, Onno (2366) 1-0
1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.d3 Be7 5.O-O O-O 6.a4 d6 7.a5 a6 8.Re1 Be6 9.Nbd2 h6 10.c3 Nh7 11.b4 Ng5 12.Nxg5 Bxg5 13.Bxe6 fxe6 14.Qg4 Qe7 15.h4 Rf4 16.Qe2 Bxh4 17.g3 Rf7 18.gxh4 Qxh4 19.Nf1 Raf8 20.Be3 Rf3 21.Nh2 Rh3 22.f3 Rf6 23.Rf1 Rg6+ 24.Kh1 Rgg3 25.Rf2 d5 26.Rg1 d4 27.Bd2 dxc3 28.Bxc3 Qg5 29.Rff1 Nd4 30.Bxd4 exd4 31.Rxg3 Rxg3 32.Qf2 e5 33.Rg1 Rxg1+ 34.Qxg1 Qd2 35.Ng4 Qf4 36.Kg2 h5 37.Nf2 Qg5+ 38.Kh2 Qd2 39.Qg3 b6 40.axb6 cxb6 41.Kg2 Qxb4 42.Qxe5 a5 43.Qe8+ Qf8 44.Qxh5 a4 45.Qd5+ Kh8 46.e5 a3 47.Ne4 Qf5 48.Qa8+ Kh7 49.Qxa3 Qxe5 50.Qd6 Qf4 51.Qxf4 1-0
2025.12.24 61st Groningen Open 2025
2141147 FM Elgersma, Onno (2366) FM Wempe, Jo (2212) 1-0
1.Nf3 d5 2.g3 c6 3.Bg2 Bg4 4.d4 e6 5.h3 Bh5 6.c4 Nd7 7.O-O Ngf6 8.cxd5 cxd5 9.Bf4 Be7 10.Nc3 Bxf3 11.Bxf3 O-O 12.Qb3 Qb6 13.Qxb6 Nxb6 14.g4 Nc4 15.g5 Ne8 16.e4 dxe4 17.Bxe4 Bd6 18.Bc1 Na5 19.Bg2 Nc7 20.d5 Nxd5 21.Nxd5 exd5 22.Rd1 Rad8 23.Rxd5 Nc6 24.Be3 Be5 25.Rb5 Rfe8 26.Rxb7 Nd4 27.Rf1 a5 28.a4 Rb8 29.Ra7 Ne2+ 30.Kh1 Bxb2 31.Re1 Nf4 32.Bc6 Re6 33.Rb1 Nd3 34.Bd5 Rd6 35.Bxf7+ Kh8 36.Bc4 h6 37.g6 1-0
2025.12.23 61st Groningen Open 2025
2141107 GM Kazakouski, Valery (2585) FM Elgersma, Onno (2366) 1-0
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Bd3 d5 6.a3 Bxc3+ 7.bxc3 dxc4 8.Bxc4 c5 9.Ne2 Qc7 10.Ba2 b6 11.O-O Bb7 12.Bb2 Rd8 13.Ng3 Nc6 14.Rc1 Qd7 15.Qe2 Rac8 16.Rfd1 Qd6 17.f3 cxd4 18.cxd4 Na5 19.e4 Rxc1 20.Rxc1 Qf4 21.Rd1 Nc6 22.d5 exd5 23.exd5 Re8 24.Ne4 Ne5 25.Bc1 Qf5 26.Nd6 Ba6 27.Qf2 Neg4 28.Qd4 Qh5 29.fxg4 Nxg4 30.h3 Re2 31.Qxg4 1-0
2025.12.22 61st Groningen Open 2025
2129660 FM Advaitt Srikant Koduri (2192) FM Elgersma, Onno (2366) 0-1
1.Nf3 Nf6 2.c4 e6 3.Nc3 d5 4.e3 Bd6 5.b3 a6 6.Bb2 O-O 7.g3 dxc4 8.bxc4 Nc6 9.Bg2 e5 10.O-O Bf5 11.d4 exd4 12.Nxd4 Nxd4 13.Qxd4 c5 14.Qd2 Be5 15.Nd5 Bxb2 16.Qxb2 Nxd5 17.Bxd5 Rb8 18.e4 Bh3 19.Rfd1 Qc7 20.f4 b5 21.Qe2 bxc4 22.Bxc4 Rb4 23.Rac1 Qb6 24.Rd2 Be6 25.Bxe6 c4+ 26.Kh1 Qxe6 27.Rd4 Rc8 28.Qd2 Qe7 29.Qc2 c3 30.Qd3 Rxd4 31.Qxd4 c2 32.Qd3 Qb4 33.Kg2 Qa4 34.a3 h5 35.h4 Qc6 36.Kh2 a5 37.Kg2 a4 38.Kf3 Qc3 39.Ke3 Qc5+ 40.Ke2 g6 41.Kf1 Rb8 42.Qxc2 Qxa3 43.Qc3 Rb3 44.Qc8+ Kg7 45.Rc7 Rf3+ 46.Kg2 Rxg3+ 47.Kh2 Rg4 48.Rxf7+ Kxf7 49.Qc4+ Kg7 50.Qd4+ Kh7 51.Qd7+ Kh6 0-1
2025.12.21 61st Groningen Open 2025
2129638 FM Elgersma, Onno (2366) Bakija, Alan (2139) 1/2-1/2
1.Nf3 d5 2.g3 c5 3.Bg2 Nf6 4.O-O e6 5.c4 Nc6 6.d3 Be7 7.Bf4 O-O 8.Ne5 Nxe5 9.Bxe5 Bd7 10.e4 dxc4 11.dxc4 Bc6 12.Qe2 Qc8 13.Nc3 b6 14.Bxf6 Bxf6 15.e5 Bxg2 16.exf6 Bxf1 17.Qg4 g6 18.Rxf1 Rd8 19.Qg5 Rd4 20.Nb5 Rd7 21.h4 Qf8 22.h5 Rad8 23.hxg6 fxg6 24.Nc3 Rf7 25.Ne4 Rd4 26.f3 Qb8 27.b3 Qc7 28.Kg2 a5 29.Rf2 a4 30.Re2 Qd8 31.Rf2 Qc7 32.Kh2 Qb8 33.Kh3 Qc7 34.Nc3 axb3 35.axb3 e5 36.Ne4 Qd7+ 37.Kg2 Qf5 38.Qh4 g5 39.Qh5 Rxe4 40.fxe4 Qxe4+ 41.Kh2 Qg6 42.Qxg6+ hxg6 43.Kh3 Rh7+ 44.Kg4 Kf7 45.Rd2 Rh1 46.Kxg5 Rh5+ 47.Kg4 Rf5 48.Rd7+ Kxf6 49.Rd6+ Kf7 50.Rxb6 e4 51.Ra6 Rf3 52.Rc6 Rxb3 53.Rxc5 e3 54.Kf3 e2+ 55.Kxe2 Rxg3 56.Re5 Kf6 57.Re8 Rc3 58.Rc8 Ke6 59.Kd2 Rg3 60.Rd8 Ra3 61.c5 Ra5 62.Rd6+ Ke5 63.Rxg6 Rxc5 64.Rg5+ Kd6 65.Rxc5 Kxc5 1/2-1/2
2025.12.13 Dutch League 2025-26
2192516 FM Elgersma, Onno (2356) FM Van der Hagen, Loek (2212) 1-0
1.Nf3 Nf6 2.d4 e6 3.Bf4 b6 4.e3 Bb7 5.h3 Be7 6.Bd3 Ne4 7.Nbd2 f5 8.Qe2 O-O 9.Rg1 c5 10.g4 d5 11.gxf5 exf5 12.c3 Nc6 13.a3 Rc8 14.Ne5 Qe8 15.Ndf3 a5 16.Nxc6 Bxc6 17.Ne5 Ba4 18.Rg2 Bf6 19.Kf1 Qe6 20.Kg1 c4 21.Bb1 Kh8 22.Kh2 Be8 23.f3 Bh5 24.Qf1 Nd6 25.Bc2 Nf7 26.Nxf7+ Rxf7 27.Qf2 Re8 28.Rag1 h6 29.h4 Qe7 30.Qg3 Bxh4 31.Qh3 g6 32.Rxg6 Bxg6 33.Rxg6 Bf6 34.Bxf5 Bg7 35.Bxh6 Kg8 36.Bxg7 Rxg7 37.Be6+ 1-0
2025.11.22 Dutch League 2025-26
2102774 CM Brookes, C (2195) FM Elgersma, Onno (2376) 1-0
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.h3 Bb7 9.d3 d6 10.c3 Qd7 11.d4 h6 12.Nbd2 Rfe8 13.Nf1 Bf8 14.Ng3 Na5 15.Bc2 c5 16.d5 g6 17.b3 Bc8 18.a4 b4 19.cxb4 cxb4 20.Bd2 Rb8 21.Bd3 Qd8 22.Be3 Nd7 23.Nd2 Nc5 24.Bxc5 dxc5 25.Qe2 Ra8 26.Rac1 Bd6 27.Qf3 Rf8 28.Ngf1 f5 29.Ne3 f4 30.Nec4 Nxc4 31.Nxc4 Ra7 32.Rc2 Rc7 33.Rec1 h5 34.Be2 Kg7 35.Qd3 Rh8 36.Nb6 Bb7 37.a5 g5 38.Qd1 Kg6 39.Qf1 g4 40.Bxa6 gxh3 41.Bxb7 Rxb7 42.Qa6 f3 43.Nc4 h2+ 44.Kxh2 Qh4+ 45.Kg1 Rg7 46.Nxd6 Kh7 47.g3 Qh3 48.Qf1 Qg4 49.Nf5 h4 50.Rxc5 hxg3 51.fxg3 Kg6 52.Rc6+ Kg5 53.R1c4 Qh5 54.Qc1+ Kg4 55.Rh6 Rxh6 56.Qxh6 Qxh6 57.Nxh6+ Kh3 58.Nf5 Ra7 59.Kf2 Rxa5 60.Kxf3 Ra1 61.Ne3 Rf1+ 62.Ke2 Rb1 63.Rxb4 Rb2+ 64.Kd3 1-0
2025.11.01 Dutch League 2025-26
2093534 FM Elgersma, Onno (2376) GM Ten Hertog, H (2522) 0-1
1.e4 c6 2.Nf3 d5 3.Nc3 g6 4.d4 Bg7 5.h3 dxe4 6.Nxe4 Nf6 7.Nxf6+ exf6 8.Bd3 O-O 9.O-O a5 10.c4 a4 11.Bf4 a3 12.b3 Na6 13.Qd2 g5 14.Bg3 h6 15.c5 Be6 16.Bc4 Re8 17.Rfe1 Qd7 18.Bd6 Bf8 19.Bxf8 Kxf8 20.h4 Nc7 21.hxg5 hxg5 22.d5 Bxd5 23.Qc3 Qf5 24.Nd4 Qg4 25.f3 Qf4 26.Kf2 Qh4+ 27.Kg1 Bxc4 28.bxc4 Qf4 29.Kf2 Rad8 30.Rxe8+ Rxe8 31.Rh1 Kg8 32.Qd3 f5 33.Nxf5 Qe5 34.Nh6+ Kf8 35.Ng4 Qxc5+ 36.Kf1 Ne6 37.Nf6 Re7 38.Nd7+ Rxd7 39.Qxd7 Qxc4+ 40.Kg1 Qc5+ 41.Kh2 Qe5+ 42.Kg1 Qa1+ 43.Kh2 Qe5+ 44.Kg1 Qe3+ 45.Kh2 Nd4 46.Qd6+ Kg7 47.Qg3 c5 48.Re1 Qf4 49.Re5 Ne6 50.Qxf4 gxf4 51.g3 b5 52.gxf4 Kf6 53.Rd5 b4 54.f5 c4 55.fxe6 b3 56.exf7 Kxf7 57.axb3 cxb3 58.Rd3 b2 59.Rb3 a2 60.Rxb2 a1=Q 61.Rb4 Qf1 62.Rf4+ Kg6 63.Kg3 Qg1+ 64.Kh3 Qf2 65.Rg4+ Kf5 66.Rf4+ Kg5 67.Rg4+ Kh5 68.Rf4 Qe3 69.Rh4+ Kg5 70.Rg4+ Kf5 71.Kg2 Qe2+ 72.Kg3 Qf1 73.Rf4+ Ke5 74.Re4+ Kd5 75.Kg4 Qg2+ 76.Kf4 Qg1 77.Re5+ Kd4 78.Re4+ Kd3 79.Ra4 Qg8 80.Re4 Kd2 81.Re5 Qf8+ 82.Kg3 Qg7+ 83.Kf4 Qf6+ 84.Rf5 Qh4+ 85.Ke5 Ke3 86.Rf7 Qh8+ 87.Rf6 Qe8+ 88.Kd6 Qb8+ 89.Ke7 Qc7+ 90.Ke6 Kd4 91.Kf5 Qe5+ 92.Kg6 Qg3+ 93.Kf7 Qh3 94.Ke7 Ke5 95.f4+ Ke4 96.Kf7 Qh7+ 97.Kf8 Kd5 98.Ke8 Qg7 99.Rf7 Qg6 100.f5 Qg5 101.Kd7 Ke5 102.Ke8 Qh6 103.Ke7 Qd6+ 104.Ke8 Qc5 105.Rf8 Qc8+ 106.Ke7 Qc3 107.Rf7 Qh3 108.Ke8 Qh4 109.Kd7 Qh5 110.Ke7 Qh8 111.Kd7 Qb8 112.Ke7 Qg8 113.Rf8 Qg5+ 114.Ke8 Qe3 115.Rf7 Kd6+ 116.Kf8 Qg5 117.f6 Qg6 118.Ra7 Qxf6+ 119.Kg8 Qg6+ 120.Rg7 Qe8+ 121.Kh7 Ke6 122.Rg6+ Kf7 123.Rg7+ Kf6 124.Rg1 Qd7+ 125.Kg8 Qc8+ 126.Kh7 Qc7+ 127.Kg8 Qb8+ 128.Kh7 Qh2+ 0-1
2025.10.04 Dutch League 2025-26
1876461 FM Elgersma, Onno (2372) FM Rijnaarts, S (2277) 1-0
1.Nf3 d5 2.g3 Nf6 3.Bg2 c6 4.O-O Bg4 5.c4 e6 6.d4 Nbd7 7.h3 Bh5 8.cxd5 cxd5 9.Bf4 Be7 10.Nc3 O-O 11.Qb3 Qb6 12.Qxb6 Nxb6 13.Ne5 Rac8 14.g4 Bg6 15.Rac1 Nc4 16.Nxg6 fxg6 17.b3 Nb6 18.Nb5 Rxc1 19.Rxc1 a6 20.Nc7 Nfd7 21.Bd2 Kf7 22.a4 Nc8 23.Nxd5 Ba3 24.Rc7 exd5 25.Rxd7+ Ke6 26.Rxg7 Nd6 27.Rxh7 Rc8 28.Bg5 Nf7 29.Bxd5+ Kxd5 30.Rxf7 Kxd4 31.Rxb7 Rc2 32.Be3+ Kd5 33.Rd7+ Ke4 34.Ra7 Rxe2 35.Rxa6 Rb2 36.Rxg6 Rxb3 37.a5 Bb2 38.Rb6 1-0
2025.09.20 Dutch League 2025-26
1642017 FM Sirin, A (2335) FM Elgersma, Onno (2378) 1-0
1.d4 d5 2.Nc3 e6 3.e4 Nf6 4.Bg5 dxe4 5.Nxe4 Be7 6.Bxf6 gxf6 7.Nf3 f5 8.Nc3 a6 9.Be2 Nd7 10.Qd3 c6 11.a4 b6 12.O-O Qc7 13.Qc4 Bd6 14.Rfe1 Bb7 15.Ng5 O-O 16.Bh5 Nf6 17.Bxf7+ Rxf7 18.Rxe6 Bxh2+ 19.Kh1 Bf4 20.Rae1 Ne4 21.Ncxe4 fxe4 22.Nxf7 Qxf7 23.R1xe4 Qh5+ 24.Kg1 Bh2+ 25.Kf1 Kh8 26.d5 c5 27.Qc3+ Kg8 28.Re7 Qd1+ 29.Re1 Qg4 30.Rxb7 Rf8 31.Ree7 Rxf2+ 32.Kxf2 Qf4+ 33.Ke2 Qg4+ 34.Qf3 Qc4+ 35.Kd1 Qd4+ 36.Qd3 1-0
2025.07.30 Dutch Open 2025
1213284 IM Maatman, Nick (2408) FM Elgersma, Onno (2388) 0-1
1.Nf3 Nf6 2.g3 b6 3.d4 Bb7 4.c4 e6 5.Bg2 Be7 6.O-O O-O 7.Re1 Na6 8.Nc3 Ne4 9.Nxe4 Bxe4 10.a3 Bf6 11.Bf4 d6 12.Qa4 Qc8 13.Rad1 Re8 14.b4 e5 15.dxe5 dxe5 16.Bc1 c5 17.Bb2 cxb4 18.axb4 Nc7 19.Nd2 Bxg2 20.Kxg2 Qb7+ 21.e4 Rad8 22.Qa1 h5 23.f3 a5 24.b5 Qc8 25.Nf1 Ne6 26.Qa2 Ng5 27.Bc1 Qh3+ 28.Kf2 Rxd1 29.Rxd1 Nxf3 30.Rd6 Nxh2 31.Qe2 Be7 32.Rd3 Bb4 33.Be3 Ng4+ 34.Kf3 f5 35.Rd1 Qh1+ 0-1
2025.07.29 Dutch Open 2025
1213255 FM Elgersma, Onno (2388) IM De Boer, Eelke (2434) 0-1
1.Nf3 d5 2.g3 g6 3.Bg2 Bg7 4.d4 c6 5.O-O Nf6 6.c4 dxc4 7.a4 c5 8.dxc5 Qxd1 9.Rxd1 Ne4 10.Na3 Nxc5 11.Nxc4 Nb3 12.Ra3 Nxc1 13.Rxc1 Nc6 14.a5 O-O 15.e3 Bd7 16.Ne1 Rfc8 17.Nd3 Rab8 18.b3 Bf5 19.Nf4 Nb4 20.Rd1 Rd8 21.Nd5 Nc6 22.Rc1 e6 23.Nf4 e5 24.Nd5 e4 25.Nf4 Nb4 26.g4 Bxg4 27.Bxe4 g5 28.Ra4 Na6 29.Nd3 f5 30.Nde5 Nc5 31.Bc2 Nxa4 32.bxa4 Rd5 33.Bb3 Kf8 34.f4 Rbd8 35.Nxg4 fxg4 36.a6 bxa6 37.fxg5 Rxg5 38.e4 Ke7 39.Kg2 Rd3 40.Rb1 g3 41.h4 Rc5 42.Ba2 Be5 43.Rf1 Rc3 44.Nxe5 Rxe5 45.Bd5 Rh5 46.Kh3 Rh6 47.Rf7+ Ke8 48.Rxa7 Rb6 49.Rg7 g2+ 50.Kxg2 Rb2+ 51.Kh1 Rc1+ 52.Rg1 Rxg1+ 53.Kxg1 Ke7 54.Bc4 a5 55.Bb5 Kf6 56.h5 h6 57.Kf1 Kg5 58.Be8 Kf4 59.Bc6 Rh2 60.Bd5 Rxh5 61.Ke2 Rh3 0-1
2025.07.28 Dutch Open 2025
1213229 GM Flom, Gabriel (2455) FM Elgersma, Onno (2388) 0-1
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Bxc6 dxc6 7.d3 Nd7 8.Nc3 O-O 9.Be3 a5 10.a4 Re8 11.Ne2 Bf8 12.Nd2 f6 13.Ng3 Nc5 14.Nf5 Ne6 15.Kh1 Kh8 16.Nc4 Nf4 17.Qf3 g6 18.Ng3 Ne6 19.Ne2 Bg7 20.Qg3 g5 21.Qf3 Nf4 22.Ng3 Be6 23.Nf5 Bxf5 24.exf5 Qd5 25.Qe4 h5 26.g3 Kh7 27.Bd2 Nh3 28.Kg2 g4 29.Qxd5 cxd5 30.Nxa5 Bh6 31.Bxh6 Kxh6 32.Nxb7 Reb8 33.Nc5 Rxb2 34.Rfc1 Kg5 35.Rab1 Ra2 36.Rb7 Kxf5 37.Rxc7 Rb8 38.Rc6 Rxc2 39.Ne4 Rxc6 0-1
2025.07.27 Dutch Open 2025
1688 FM Elgersma, Onno (2388) FM Baselmans, Luuk (2390) 1-0
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qc2 O-O 5.a3 Bxc3+ 6.Qxc3 b6 7.Bg5 Bb7 8.e3 d6 9.f3 Nbd7 10.Bd3 c5 11.Ne2 h6 12.Bh4 Qc7 13.O-O Rac8 14.b4 Rfd8 15.Rac1 Qb8 16.Qb2 Qa8 17.e4 Qb8 18.Rfd1 g5 19.Bg3 Nh5 20.Bf2 cxd4 21.Nxd4 Ne5 22.Bf1 Ba6 23.Qb3 Qc7 24.Qa4 Bxc4 25.Bxc4 Nxc4 26.b5 d5 27.exd5 Rxd5 28.Nc6 Qd6 29.Re1 Rxc6 30.bxc6 b5 31.Qxa7 Qxc6 32.a4 Nf4 33.axb5 Qxb5 34.Rb1 Qc6 35.Rb8+ Kg7 36.Rb7 Nd6 37.Qa1+ Kg6 38.Rb8 e5 39.Rxe5 Rd2 40.Rg8+ Kh7 41.Rc5 Qxc5 42.Qg7# 1-0
2025.07.26 Dutch Open 2025
1661 Madularea, David (2218) FM Elgersma, Onno (2388) 1/2-1/2
1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.a4 g6 5.d4 exd4 6.Nxd4 Bg7 7.Bc4 O-O 8.O-O d6 9.Bg5 h6 10.Bh4 Nxd4 11.Qxd4 g5 12.Bg3 Nh5 13.Qd3 Kh8 14.Nd5 f5 15.exf5 Bxf5 16.Qe2 Nxg3 17.hxg3 c6 18.Ne3 d5 19.Nxf5 Rxf5 20.Bd3 Rf6 21.Rae1 Qb6 22.c3 Raf8 23.Bb1 R8f7 24.Qe8+ Rf8 25.Qe2 R8f7 26.Qe8+ Rf8 27.Qe2 1/2-1/2
2025.07.25 Dutch Open 2025
1630 FM Elgersma, Onno (2388) FM Duijker, R (2158) 1-0
1.e4 e5 2.Nf3 Nf6 3.Nxe5 Nxe4 4.Qe2 Qe7 5.Qxe4 d6 6.d4 dxe5 7.dxe5 Nc6 8.Nc3 Qxe5 9.Qxe5+ Nxe5 10.Bf4 f6 11.O-O-O Bd7 12.Nb5 O-O-O 13.Nxa7+ Kb8 14.Nb5 Bc5 15.f3 g5 16.Bxe5 fxe5 17.Nc3 Bd4 18.Ne4 Bc6 19.Bd3 Rhf8 20.Rhe1 g4 21.fxg4 Rf4 22.h3 h6 23.c3 Bb6 24.Bc2 Rg8 25.Re2 Rgf8 26.a4 Rf1 27.Ree1 Rxe1 28.Rxe1 Bf2 29.Nxf2 Rxf2 30.Be4 Bxe4 31.Rxe4 Rxg2 32.Rxe5 Rg1+ 33.Kc2 Rg3 34.Rh5 1-0
2025.07.24 Dutch Open 2025
1600 FM Albers, Sasa (2252) FM Elgersma, Onno (2388) 1/2-1/2
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.c3 d5 9.exd5 Nxd5 10.Nxe5 Nxe5 11.Rxe5 Bb7 12.d4 Bf6 13.Re1 Re8 14.Na3 b4 15.cxb4 Rxe1+ 16.Qxe1 Bxd4 17.Nc2 Bb6 18.Be3 Nxe3 19.fxe3 Qg5 20.Qf2 Kh8 21.Rd1 f5 22.Qg3 Qf6 23.Kh1 Re8 24.h3 Qxb2 25.Qg5 Qf6 26.Qxf6 gxf6 27.Bd5 Rd8 28.Bf3 Rxd1+ 29.Bxd1 Bd5 30.Be2 Bxa2 31.Bxa6 Bb1 32.Bd3 Bxe3 33.Bxf5 Bf4 34.Kg1 Bd6 35.Bd3 h5 36.Kf2 Kg7 37.Ke3 Kh6 38.b5 Bxc2 39.Bxc2 h4 40.Be4 1/2-1/2
2025.07.23 Dutch Open 2025
1579 FM Elgersma, Onno (2388) Eckardt, Joshua (2259) 1-0
1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.e5 Nfd7 5.Nce2 c5 6.c3 Nc6 7.Nf3 a5 8.h4 a4 9.a3 Be7 10.Nf4 Qb6 11.g3 O-O 12.Bd3 h6 13.g4 cxd4 14.cxd4 Nxd4 15.Nxd4 Nxe5 16.Be2 Bc5 17.Be3 Qxb2 18.g5 Nc4 19.Bxc4 dxc4 20.Nc2 Qc3+ 21.Kf1 Bxe3 22.Nxe3 b5 23.gxh6 Bb7 24.Rg1 g6 25.h5 Qe5 26.h7+ Kh8 27.hxg6 Kg7 1-0
2025.07.22 Dutch Open 2025
1541 Ten Dam, Bram (2139) FM Elgersma, Onno (2388) 1/2-1/2
1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.d3 Be7 5.O-O O-O 6.Nc3 d6 7.h3 Na5 8.Bb3 Nxb3 9.axb3 c5 10.Bg5 Be6 11.Nd2 Qd7 12.Nc4 h6 13.Bxf6 Bxf6 14.Ne3 g6 15.Ncd5 Bg7 16.c3 f5 17.f4 b5 18.Ra6 b4 19.Nc4 exf4 20.Rxd6 Qf7 21.Nxf4 Bxc4 22.bxc4 fxe4 23.dxe4 bxc3 24.bxc3 g5 25.Nd5 Qxf1+ 26.Qxf1 Rxf1+ 27.Kxf1 a5 28.Nc7 Rf8+ 29.Ke2 Be5 30.Rd7 a4 31.Nb5 Ra8 32.Rd2 Kf7 33.Ra2 h5 34.Kf3 Ke6 35.Ke2 g4 36.hxg4 hxg4 37.Ke3 g3 38.Ra1 Kf6 39.Rf1+ Kg6 40.Rf5 Bg7 41.Rxc5 a3 42.Nxa3 Rxa3 43.Rd5 Bh6+ 44.Kf3 Rxc3+ 45.Kg4 Rxc4 46.Rd6+ Kh7 47.Rd7+ Bg7 48.Kxg3 Rxe4 49.Kf3 Ra4 50.Rd6 Be5 51.Re6 Ra3+ 52.Ke4 Bg3 53.Rc6 Kg7 54.Rb6 Bh4 55.Rd6 Rg3 56.Rd2 Bg5 57.Re2 Kg6 58.Kd4 Kf5 59.Re5+ Kg4 60.Re2 Bf4 61.Rc2 Ra3 62.Re2 Ra8 63.Rc2 Rd8+ 64.Ke4 Re8+ 65.Kd5 Kg3 66.Rc4 Be3 67.Re4 Rd8+ 68.Kc4 Bf2 69.Re5 Kxg2 70.Rd5 Rc8+ 71.Kd3 Bg3 72.Rf5 Rg8 73.Ke4 Kh3 74.Kf3 Ra8 75.Rg5 Rf8+ 76.Ke4 Rf4+ 77.Kd5 Kg2 78.Rg8 Kf3 79.Ra8 Rf5+ 80.Ke6 Re5+ 81.Kf6 Bf4 82.Ra3+ Kg4 83.Ra1 Rh5 84.Rg1+ Bg3 85.Ke6 Re5+ 86.Kd7 Re3 87.Kc6 Kf5 88.Kd5 Bf4 89.Rg8 Rd3+ 90.Kc4 Rd7 91.Re8 Be5 92.Rg8 Ke4 93.Rg4+ Bf4 94.Rh4 Rc7+ 95.Kb3 Ke3 96.Rh3+ Kd2 97.Rh5 Kd3 98.Rd5+ Ke4 99.Rb5 Be3 100.Rb4+ Bd4 101.Rc4 Rb7+ 102.Rb4 Rh7 103.Kc4 Rc7+ 104.Kb5 Kd5 105.Ka4 Bc5 106.Rb1 Ra7+ 107.Kb3 Ra3+ 108.Kb2 Rh3 109.Kc2 Kc4 110.Rc1 Be3 111.Re1 Rh2+ 112.Kb1 Bd2 113.Re8 Bc3 114.Rc8+ Kd3 115.Rd8+ Bd4 116.Rd7 Rb2+ 117.Kc1 Ra2 118.Rb7 Rh2 119.Rb3+ Bc3 1/2-1/2
2025.07.13 Science Park Open A 2025
18697 Goudriaan, Rafael (2145) FM Elgersma, Onno (2388) 1-0
1.e4 d6 2.d4 Nf6 3.Bd3 e5 4.c3 Nbd7 5.Ne2 g6 6.O-O Bg7 7.f4 O-O 8.Nd2 Re8 9.Qc2 exd4 10.cxd4 c5 11.d5 c4 12.Nxc4 b5 13.Nxd6 Qb6+ 14.Kh1 Qxd6 15.e5 Qxd5 16.Nc3 Qc5 17.exf6 Nxf6 18.Bxb5 Bf5 19.Qf2 Qxf2 20.Rxf2 Re1+ 21.Rf1 Rxf1+ 22.Bxf1 Rb8 23.h3 h5 24.a4 h4 25.Be2 Rb3 26.Bd1 Rb4 27.Bf3 a5 28.Ra3 Be6 29.Kg1 Nd7 30.Nd1 Rb8 31.Bd2 Nb6 32.Bc3 Nc4 33.Ra1 Bf8 34.Be2 Bc5+ 35.Kh1 Rd8 36.Rc1 Ba7 37.Bxc4 Bxc4 38.Bf6 Rd3 39.Nc3 Bb3 40.Nb5 Be6 41.Nxa7 Rd2 42.Nb5 g5 43.Nd4 gxf4 44.Nxe6 fxe6 45.Rc4 Rd1+ 46.Kh2 Rf1 47.Be5 f3 48.gxf3 Rf2+ 49.Kg1 Rxf3 50.Rg4+ 1-0
2025.07.12 Science Park Open A 2025
18687 FM Elgersma, Onno (2388) CM Aravindhan, Achyuth (2031) 1/2-1/2
1.e4 c5 2.Nf3 Nc6 3.Bb5 g6 4.Bxc6 dxc6 5.d3 Bg7 6.h3 Qc7 7.O-O h6 8.a4 g5 9.Nh2 Be5 10.Ng4 Bxg4 11.Qxg4 Nf6 12.Qe2 Rg8 13.g3 O-O-O 14.Na3 Qd7 15.Kg2 Nh7 16.Nc4 Bb8 17.a5 Nf8 18.Be3 Ng6 19.Rh1 Ne5 20.Nxe5 Bxe5 21.Bxc5 a6 22.d4 Bc7 23.b4 e5 24.dxe5 Bxe5 25.Rad1 Qe6 26.Rxd8+ Rxd8 27.Rd1 Rxd1 28.Qxd1 Bc7 29.Qg4 Qxg4 30.hxg4 Be5 31.Kf3 Kd7 32.Ke3 Ke6 33.Bd4 Bd6 34.c3 f6 35.Bc5 Be5 36.Kd3 Kf7 37.Kc4 Bc7 38.Bb6 Bd6 39.Kb3 Ke6 40.Bc5 Bc7 41.Kc2 Kf7 42.Bd4 Ke6 43.c4 Kf7 44.Kb3 Ke6 45.Bc3 Bd6 46.Kc2 Bc7 47.Bd4 Bd6 48.Bc5 Bc7 49.Kd3 Kf7 50.Be3 Ke6 51.Bd2 Bd6 52.f4 Kf7 53.Kc3 Ke7 54.Be3 Kf7 55.Kb3 Ke6 56.Ka4 Kd7 57.b5 Ke6 58.b6 c5 59.Kb3 Be7 60.Kc3 Kd6 61.Kd3 Bf8 62.Bd2 Ke6 63.Bc3 Bg7 64.Ke2 Ke7 65.Kf3 Kf7 66.e5 fxe5 67.Bxe5 Bxe5 68.fxe5 Ke7 69.Ke3 Kf7 70.e6+ Kf6 71.Kd3 Ke7 1/2-1/2
2025.07.11 Science Park Open A 2025
18679 Boeren, Jurriaan (2096) FM Elgersma, Onno (2388) 0-1
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Bc4 e6 7.Be3 Qc7 8.Bb3 b5 9.f3 Bb7 10.Qe2 Nbd7 11.g4 Nc5 12.g5 Nfd7 13.h4 Nb6 14.a3 Be7 15.Ba2 Rc8 16.h5 Nc4 17.Ndxb5 axb5 18.Nxb5 Qb8 19.Bxc4 d5 20.exd5 exd5 21.Bd3 Nxd3+ 22.cxd3 O-O 23.Kf2 Rfe8 24.Qd2 d4 25.Nxd4 Qe5 26.Rag1 Bc5 27.Rg4 Rcd8 28.Rhh4 Qd5 29.Rf4 Re5 30.g6 fxg6 31.hxg6 hxg6 32.b4 g5 33.bxc5 gxf4 34.Rxf4 Rh5 35.Qb4 Rh2+ 36.Kg1 Qh5 37.Qc4+ Bd5 0-1
2025.07.09 Science Park Open A 2025
18661 FM Wunnink, M (2166) FM Elgersma, Onno (2388) 1/2-1/2
1.d4 d5 2.c4 e6 3.Nf3 Nf6 4.Nc3 Nbd7 5.Bf4 dxc4 6.e3 Nd5 7.Bxc4 Nxf4 8.exf4 Nb6 9.Bb3 g6 10.Qe2 c6 11.Qe5 f6 12.Qe2 Nd5 13.g3 Bb4 14.Rc1 O-O 15.O-O a5 16.Na4 Re8 17.a3 Bf8 18.Rfe1 Bd7 19.Nc5 Ra7 20.Qc2 Bc8 21.Re2 b6 22.Ne4 Bg7 23.Rce1 Ba6 24.Bc4 Bxc4 25.Qxc4 Rc7 26.Qb3 Rce7 27.Rc1 Qa8 28.Rce1 a4 29.Qc4 Rd7 30.Rc2 Rc8 31.Nc3 Nc7 32.Qxa4 Qxa4 33.Nxa4 Nd5 34.Rxe6 Rdc7 35.Nc3 Nxc3 36.Rxc3 Kf7 37.Re2 Bf8 38.Kf1 Rd7 39.Rec2 Rd6 40.Rb3 Rb8 41.Rbc3 Rc8 42.Rb3 Rb8 43.d5 cxd5 44.Rc7+ Kg8 45.Nd4 f5 46.a4 Re8 47.Re3 Re4 48.Rd3 Bg7 49.Rc8+ Kf7 50.Rc7+ Kg8 51.Rc8+ Kf7 52.Rc7+ 1/2-1/2
2025.07.08 Science Park Open A 2025
18645 FM Elgersma, Onno (2388) Kazarjan, Gachatur (2202) 0-1
1.Nf3 d5 2.d4 Nf6 3.e3 e6 4.Bd3 b6 5.O-O Bd6 6.c4 Nbd7 7.cxd5 exd5 8.Nc3 Bb7 9.b3 O-O 10.Bb2 a6 11.Rc1 Re8 12.Ne2 Ne4 13.Ng3 g6 14.Qc2 Rc8 15.Rfd1 Qe7 16.Bf1 h5 17.Nxe4 dxe4 18.Nd2 Nf6 19.h3 b5 20.a4 c6 21.Be2 Nd5 22.axb5 cxb5 23.Qb1 Bb4 24.Nf1 Qg5 25.Ba1 Ba3 26.Rc5 Bxc5 27.dxc5 b4 28.Bc4 Nc3 29.Bxc3 bxc3 30.b4 Red8 31.Rc1 a5 32.bxa5 Qxc5 33.Bxf7+ Kxf7 34.Qxb7+ Qe7 35.Qb3+ Qe6 36.Qb7+ Kg8 37.a6 Qd5 38.Qb6 Qc6 39.Qb3+ Kg7 40.a7 Rc7 41.Qb8 Rdc8 42.Ng3 Qa4 43.Qb6 Qxa7 44.Qe6 Qc5 45.Nxe4 Qf5 46.Qxf5 gxf5 47.Nd6 Rf8 48.Nb5 Rc5 49.Nd4 Kf6 50.Kf1 Ke5 51.g3 Kd5 52.Ke2 Kc4 53.Rb1 Ra5 54.Rb7 Ra2+ 55.Kf3 Rc8 56.Nxf5 c2 57.Nd6+ Kd5 58.Nxc8 c1=Q 59.Rd7+ Ke6 60.Rd6+ Ke5 61.Rd8 Qc6+ 0-1
2025.07.07 Science Park Open A 2025
18639 FM Padeiro, J (2119) FM Elgersma, Onno (2388) 0-1
1.c4 e6 2.Nf3 d5 3.b3 Nf6 4.Bb2 c5 5.e3 Nc6 6.cxd5 exd5 7.Bb5 Bd6 8.O-O O-O 9.d4 cxd4 10.Nxd4 Bc7 11.Be2 Re8 12.Nc3 Qd6 13.g3 a6 14.Nxc6 bxc6 15.Bf3 Bh3 16.Re1 Rad8 17.Qd4 Qe6 18.Qh4 d4 19.Ne4 Nxe4 20.Bxe4 Qxe4 21.Qxh3 Ba5 22.Qf1 Bxe1 23.Rxe1 dxe3 24.Rxe3 Qc2 25.Rxe8+ Rxe8 26.Bd4 Rd8 0-1
2025.07.06 Science Park Open A 2025
18623 FM Elgersma, Onno (2388) Zhou, Zhengke (2092) 1/2-1/2
1.e4 e6 2.d4 d5 3.e5 c5 4.c3 Qb6 5.Nf3 Nc6 6.g3 Bd7 7.Bh3 Nh6 8.O-O cxd4 9.cxd4 Nf5 10.Bxf5 exf5 11.Nc3 Be6 12.Ne2 Be7 13.Nf4 O-O 14.h4 Rfc8 15.a3 Na5 16.b4 Nc4 17.Kg2 a5 18.b5 a4 19.Ng5 Na5 20.Be3 g6 21.Rh1 Nb3 22.Rb1 Rc4 23.Nfxe6 fxe6 24.h5 Rxd4 25.Qe2 Bxg5 26.hxg6 Bxe3 27.Qxe3 f4 28.gxf4 Qxb5 29.Qg3 Qd3 30.Rxh7 Qe4+ 31.f3 Rd2+ 32.Kh3 Qxb1 33.Rh8+ Kg7 34.Rh7+ Kg8 35.Rh8+ Kg7 36.Rh7+ 1/2-1/2
2025.07.05 Science Park Open A 2025
18614 Pascual, Diego (2066) FM Elgersma, Onno (2388) 0-1
1.e4 e6 2.d4 d5 3.Nd2 a6 4.Ngf3 c5 5.dxc5 Bxc5 6.Bd3 Nf6 7.Qe2 O-O 8.O-O h6 9.Rd1 Nc6 10.Nb3 Ba7 11.c3 Qc7 12.h3 dxe4 13.Bxe4 Nxe4 14.Qxe4 f5 15.Qe2 e5 16.Be3 e4 17.Qc4+ Kh7 18.Bxa7 exf3 19.Bc5 Rf6 20.gxf3 Rg6+ 21.Kh1 Be6 22.Qh4 Bxb3 23.axb3 Ne5 24.Be3 Nxf3 25.Qf4 Qc6 26.Qc4 Qe4 27.Qxe4 fxe4 28.Rd7 Rf8 29.Rd5 b5 30.b4 Rff6 31.Rad1 Re6 32.Bf4 Rgf6 33.Be3 Nh4 34.Rg1 Rf3 35.Rg3 Rg6 36.Rxf3 Nxf3 37.Rd1 h5 38.Bf4 h4 39.Bh2 Rf6 40.Bd6 Ng5 41.Kg2 Rf3 42.Rh1 Rd3 43.Bf4 Nf3 44.Ra1 Kg6 45.Be3 Rd6 46.Bf4 Rc6 47.Rd1 Kf5 48.Be3 g5 49.Rd8 Rf6 50.Bc5 Rg6 51.Kf1 g4 52.Rd5+ Ke6 53.Rd6+ Kf7 54.Rxg6 Kxg6 55.hxg4 Kg5 56.Ke2 h3 57.Bd6 Kxg4 58.b3 Kf5 59.c4 h2 60.Bxh2 Nxh2 0-1
2025.06.22 HSG Open 2025
43124 Iolis, O (2186) FM Elgersma, Onno (2393) 0-1
1.e4 e6 2.d4 d5 3.e5 c5 4.c3 Nc6 5.Nf3 Bd7 6.Be2 f6 7.O-O fxe5 8.Nxe5 cxd4 9.cxd4 Bd6 10.Nxd7 Qxd7 11.Nc3 Nf6 12.f4 O-O 13.g3 Ne7 14.Be3 Nf5 15.Bf2 Rac8 16.Rc1 Bc7 17.Qd3 Bb6 18.Kg2 Qf7 19.Kh1 Qg6 20.Rcd1 Rfd8 21.Bf3 Ng4 22.Bg1 Qh5 23.Kg2 Nfe3+ 24.Kh1 Nxf1 25.Rxf1 Qf5 26.Qxf5 exf5 27.Bxd5+ Kf8 28.Be6 Rb8 29.Bxf5 Nh6 30.Bxh7 Bxd4 31.h3 Bxg1 32.Kxg1 Rd2 33.Rf2 Rbd8 34.b3 Rxf2 35.Kxf2 Rd2+ 36.Kf3 a6 37.Be4 b5 38.a4 Rb2 39.Bd5 Rc2 40.Ne4 bxa4 41.bxa4 Nf5 42.g4 Ne7 43.Bb7 a5 44.Ba6 Ra2 45.Nc5 Nd5 46.Bc4 Ra3+ 47.Bb3 Nc3 48.Kg2 Ne4 49.Ne6+ Ke7 50.Bd5 Nf6 51.Bc4 Rc3 52.Nxg7 Rxc4 53.Kg3 Rxa4 54.g5 Ra1 55.h4 a4 56.Nf5+ Kf7 57.Nh6+ Kf8 0-1
2025.06.22 HSG Open 2025
43134 FM Elgersma, Onno (2393) Zhu, Chenwu (2188) 1/2-1/2
1.Nf3 Nf6 2.g3 d5 3.Bg2 Bf5 4.c4 e6 5.O-O c6 6.Qb3 Qb6 7.d3 Qxb3 8.axb3 h6 9.cxd5 exd5 10.Bd2 Na6 11.Bc3 Be7 12.e4 dxe4 13.Nd4 Bd7 14.dxe4 O-O 15.Nd2 Nc7 16.Nc4 c5 17.Nf5 Bxf5 18.exf5 Nfd5 19.Be5 Bf6 20.Bd6 Be7 21.Rfd1 Bxd6 22.Nxd6 Nf6 23.Nxb7 Nb5 24.Nxc5 Rad8 25.Nb7 Rxd1+ 26.Rxd1 Rc8 27.Bf1 a6 28.Bc4 Kf8 29.Ra1 Rc7 30.Nd8 Nd6 31.Rxa6 Nxc4 32.bxc4 Rxc4 33.Ra7 Rc1+ 34.Kg2 Rc2 35.Nxf7 Ng4 36.Kf3 Nxh2+ 37.Ke4 Re2+ 38.Kd5 Rxf2 39.Ke6 Re2+ 40.Ne5 Kg8 41.f6 gxf6 42.Kxf6 Rxb2 43.Nd7 Kh7 44.Nf8+ Kg8 45.Ne6 Ng4+ 46.Kf5 h5 47.Kg6 Ne5+ 48.Kxh5 Nf7 49.Kg6 Ne5+ 50.Kf6 Ng4+ 51.Kg5 Ne5 52.Rg7+ Kh8 53.Re7 Kg8 54.Nf4 Rb5 55.Kh4 Ng6+ 56.Nxg6 Rh5+ 57.Kg4 Rg5+ 58.Kf4 Rxg6 59.g4 Ra6 60.g5 Ra5 61.Kg4 Kf8 62.Rb7 Kg8 63.Kh5 Ra6 64.Re7 Rb6 65.Re2 Ra6 66.Rf2 Rb6 67.Kg4 Kg7 68.Rh2 Ra6 69.Kh5 Rb6 70.Rc2 Rb7 71.Rc6 Ra7 72.Rg6+ Kh7 73.Rb6 Kg7 74.Rc6 Rb7 75.Kg4 Rb4+ 76.Kh5 Rb7 77.Rc5 Ra7 78.Kg4 Rb7 79.Kf5 Rf7+ 80.Kg4 Ra7 81.Re5 Rb7 82.Kf4 Rf7+ 83.Kg3 Ra7 1/2-1/2
2025.06.21 HSG Open 2025
43116 Jonsson, Gauti Pall (2123) FM Elgersma, Onno (2393) 0-1
1.e4 e6 2.d4 d5 3.Nd2 a6 4.Ngf3 c5 5.exd5 exd5 6.dxc5 Bxc5 7.Be2 Nf6 8.O-O O-O 9.Nb3 Ba7 10.Nbd4 Re8 11.h3 Ne4 12.c3 Nc6 13.Be3 Qd6 14.Bd3 Bb8 15.Re1 Bc7 16.Qc2 Bd7 17.Rad1 Nxd4 18.Bxd4 Ng5 19.Ne5 f6 20.f4 fxe5 21.Bxe5 Rxe5 22.fxe5 Bb6+ 23.Kh1 Qh6 24.e6 Bxe6 25.Bf5 Bf7 26.Qa4 Qd6 27.Rd3 Bc7 28.g3 Rf8 29.Qg4 Qh6 30.Re7 Bh5 31.Qd4 Rxf5 32.Rxc7 Bf3+ 33.Rxf3 Qxh3+ 0-1
2025.06.20 HSG Open 2025
43076 FM Elgersma, Onno (2393) Maes, Djad (2037) 1/2-1/2
1.Nf3 Nf6 2.c4 e6 3.g3 d5 4.Bg2 Be7 5.O-O O-O 6.b3 d4 7.e3 c5 8.exd4 cxd4 9.Re1 Nc6 10.Bb2 Re8 11.a3 a5 12.d3 Bc5 13.Ne5 Nxe5 14.Rxe5 Nd7 15.Re2 e5 16.Qe1 Qb6 17.Nd2 Bd6 18.f4 Nc5 19.Bxd4 Qd8 20.Bxc5 Bxc5+ 21.Kh1 Bg4 22.Rxe5 Bd4 23.Rxe8+ Qxe8 24.Qxe8+ Rxe8 25.Rb1 Re3 26.b4 a4 27.c5 Rxd3 28.Nc4 Be6 29.Nd6 Rxa3 30.f5 Ba2 31.Rd1 Bb3 32.Rxd4 Ra1+ 33.Bf1 Rxf1+ 34.Kg2 Rd1 35.Rxd1 Bxd1 36.Nc4 Kf8 37.Kf2 Ke7 38.Ke3 Kf6 39.b5 Ke7 40.Kd4 Bf3 41.Kc3 g6 42.fxg6 fxg6 43.Kb4 Ke6 44.Na5 Kd5 45.Nxb7 a3 46.Na5 Bd1 1/2-1/2
2025.06.09 17th BPB Limburg Open
61363 FM Elgersma, Onno (2393) Van Batenburg, Mees (2218) 1-0
1.Nf3 d5 2.g3 e6 3.Bg2 Nf6 4.O-O Be7 5.d3 O-O 6.a4 Nbd7 7.Nbd2 e5 8.e4 c6 9.Qe2 Bd6 10.Nh4 Re8 11.a5 a6 12.c3 Nf8 13.h3 h6 14.Nhf3 Ng6 15.Re1 Be6 16.Qf1 Qd7 17.Ra4 Nh7 18.d4 c5 19.Ra1 cxd4 20.cxd4 dxe4 21.Nxe4 Bb4 22.Nc5 Bxc5 23.dxc5 Bd5 24.Be3 f5 25.Rad1 Nf6 26.Nd2 f4 27.Ne4 Ne7 28.gxf4 Qe6 29.Nxf6+ Qxf6 30.Rxd5 Nxd5 31.Bxd5+ Kh8 32.fxe5 Rxe5 33.Bxb7 Rf8 34.Bg2 Rb8 35.c6 Rxb2 36.Bd4 Rxe1 37.Qxe1 Qxd4 38.Qe8+ 1-0
2025.06.08 17th BPB Limburg Open
61328 CM Donker, Roel (2213) FM Elgersma, Onno (2393) 1-0
1.d4 e6 2.c4 d5 3.Nf3 Nf6 4.Nc3 Nc6 5.cxd5 exd5 6.Bg5 Be7 7.e3 h6 8.Bh4 O-O 9.Bd3 Ne8 10.Bg3 Bd6 11.Ne5 Nxe5 12.dxe5 Bb4 13.O-O Bxc3 14.bxc3 Be6 15.e4 dxe4 16.Bxe4 Qxd1 17.Rfxd1 Rb8 18.f4 f5 19.Bd5 Bxd5 20.Rxd5 Kf7 21.Bf2 b6 22.a4 Ke6 23.Rad1 g5 24.Be3 g4 25.Rd7 Rf7 26.Rxf7 Kxf7 27.Rd7+ Ke6 28.Rh7 b5 29.Bxa7 Rb7 30.Be3 bxa4 31.Rxh6+ Kd5 32.Ra6 Rb1+ 33.Kf2 Ra1 34.c4+ Ke4 35.Bc5 Kxf4 36.e6 Ra2+ 37.Kf1 Ra1+ 38.Ke2 Ra2+ 39.Kf1 Ra1+ 40.Ke2 Ra2+ 41.Kd3 Rxg2 42.Ra8 Nf6 43.Bd4 Ne4 44.Be3+ Kf3 45.e7 Rb2 46.e8=Q Rb3+ 47.Kc2 Rxe3 48.Qh5 Re2+ 49.Kc1 f4 50.Rxa4 Re1+ 51.Kc2 Re2+ 52.Kc1 Re1+ 53.Kb2 Re2+ 54.Ka3 c5 55.Ra6 Re1 56.Rg6 Ra1+ 57.Kb2 Rg1 58.h3 Nf2 59.hxg4 Nxg4 60.Kb3 Rg3 61.Ka4 Rg1 62.Kb5 1-0
2025.06.07 17th BPB Limburg Open
61303 Groenewoud, Joel (2159) FM Elgersma, Onno (2393) 0-1
1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 g6 5.c4 Nf6 6.Nc3 d6 7.Be2 Nxd4 8.Qxd4 Bg7 9.Be3 O-O 10.Qd2 a5 11.O-O a4 12.Rac1 Qa5 13.f4 Bg4 14.Bd3 Bd7 15.f5 Ng4 16.Bf4 Bc6 17.Qe2 Ne5 18.Kh1 Rac8 19.Rc2 a3 20.Bg5 Nxd3 21.Qxd3 axb2 22.Bxe7 Bxc3 23.Bxf8 Be5 24.Bh6 Qxa2 25.Rd2 Qa1 26.Rdd1 Ra8 27.c5 Ra3 28.fxg6 hxg6 29.Qc4 d5 30.exd5 Qxd1 31.Rxd1 Ra1 32.Bc1 Bxd5 0-1
2025.06.07 17th BPB Limburg Open
61308 FM Elgersma, Onno (2393) GM Bok, B (2582) 0-1
1.Nf3 d5 2.b3 Bf5 3.Bb2 e6 4.g3 h6 5.Bg2 Nf6 6.O-O Be7 7.d3 O-O 8.Nc3 Bh7 9.e4 c6 10.Nd2 a5 11.Kh1 Na6 12.f4 b5 13.e5 Nd7 14.a4 bxa4 15.Rxa4 Qc7 16.Ne2 Nac5 17.Ra2 a4 18.bxa4 Nxa4 19.Ba1 Nab6 20.Rxa8 Rxa8 21.g4 c5 22.Nf3 c4 23.Nfd4 cxd3 24.cxd3 Bf8 25.Nc3 Nc5 26.Ncb5 Qd7 27.f5 Ra5 28.Qf3 Ra8 29.Qg3 Nb3 30.Nxb3 Qxb5 31.Nd4 Qd7 32.g5 hxg5 33.Qxg5 exf5 34.Bh3 Qe7 35.Qg1 0-1
2025.06.06 17th BPB Limburg Open
61293 FM Elgersma, Onno (2393) CM Terlouw, Wouter (2196) 1-0
1.Nf3 Nf6 2.g3 b5 3.Bg2 Bb7 4.Na3 a6 5.c4 b4 6.Nc2 c5 7.d4 e6 8.d5 exd5 9.Nh4 g6 10.O-O Bg7 11.cxd5 d6 12.Ne3 Nbd7 13.Nc4 Nb6 14.Na5 Bxd5 15.e4 Nc4 16.exd5 Nxa5 17.Qa4+ Nd7 18.Bh3 f5 19.Nxf5 gxf5 20.Bxf5 Nc4 21.Be6 Bf6 22.Bh6 Qc7 23.a3 Nb6 24.Qc2 O-O-O 25.axb4 cxb4 26.Qc6 Rhe8 27.Bh3 Kb8 28.Rxa6 Bd4 29.Rc1 Qxc6 30.dxc6 Rc8 31.cxd7 Rxc1+ 32.Bxc1 Nxd7 33.Bf4 Ne5 34.Rxd6 Bxb2 35.Rb6+ Ka7 36.Rxb4 Nd3 37.Be3+ Ka6 38.Bf1 Ka5 39.Rb3 1-0
2025.06.01 50th OKU 2025
69068 FM Elgersma, Onno (2397) IM Grooten, H (2184) 1-0
1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 a6 5.Be2 Nf6 6.Qd3 Qc7 7.c4 b5 8.Nd2 Bb7 9.cxb5 e5 10.Qg3 Nxe4 11.Nxe4 Bxe4 12.O-O Qd6 13.Rd1 Qe7 14.Bf3 d5 15.Bxe4 dxe4 16.Nf5 Qe6 17.Nxg7+ Bxg7 18.Qxg7 Rf8 19.Rd8+ Kxd8 20.Qxf8+ Kc7 21.Be3 axb5 22.Qc5+ Nc6 23.Qb6+ 1-0
2025.06.01 50th OKU 2025
69079 FM Kokje, Joris (2279) FM Elgersma, Onno (2397) 1-0
1.d4 e6 2.c4 Nf6 3.Nf3 d5 4.g3 Bb4+ 5.Bd2 a5 6.Bg2 O-O 7.O-O Be7 8.Na3 Nbd7 9.Rc1 c6 10.Bf4 h6 11.Nb1 a4 12.a3 Ne4 13.Nc3 g5 14.Be3 Nxc3 15.Rxc3 f5 16.Ne5 Qe8 17.f4 g4 18.h3 gxh3 19.Bxh3 Nf6 20.Bg2 Bd6 21.Bf3 h5 22.Kg2 Ng4 23.Rh1 Kg7 24.Rh3 Rh8 25.Qd3 Ra5 26.Rc1 Bxe5 27.fxe5 Qg6 28.Qd2 Ra6 29.Bg5 Rb6 30.Rh4 Rxb2 31.Bf6+ Kf7 32.Qxb2 Nxf6 33.exf6 Qg5 34.Rch1 Rg8 35.R1h3 f4 36.Rxh5 1-0
2025.05.31 50th OKU 2025
69049 Winter, Sven (2054) FM Elgersma, Onno (2397) 1/2-1/2
1.e4 e6 2.d4 d5 3.Nd2 c5 4.Ngf3 cxd4 5.Nxd4 Nc6 6.Nxc6 bxc6 7.Bd3 Nf6 8.O-O Be7 9.b3 O-O 10.Qe2 a5 11.a4 Bb4 12.e5 Nd7 13.Nf3 h6 14.Bf4 Nc5 15.Qe3 Nxd3 16.cxd3 c5 17.d4 c4 18.bxc4 dxc4 19.Nd2 Bb7 20.Qg3 Bxd2 21.Bxd2 Kh7 22.Bc3 Be4 23.Rfe1 Qd5 24.f3 Bd3 25.Qf2 Rab8 26.Ra2 Rb3 27.Qd2 Rfb8 28.Rc1 Rxc3 29.Qxc3 Rb3 30.Qa1 c3 31.Ra3 Qxd4+ 32.Kh1 Rxa3 33.Qxa3 c2 34.h3 Bf5 35.Qb3 Qb4 36.Qa2 Qc3 37.Qa1 Qb3 38.Qd4 Qb1 39.Qd2 Qb2 40.g4 Bg6 41.h4 h5 42.gxh5 Bf5 43.Qf4 Qb4 44.Qg5 Qc3 45.Qf4 Qb4 46.Qg5 Qb3 47.Qf4 Qd3 48.Rg1 Qd1 49.Qe3 Bd3 50.Qg5 Qxf3+ 51.Kh2 g6 52.hxg6+ Bxg6 53.Rg3 Qf2+ 54.Rg2 Qf3 55.Rg3 Qe2+ 56.Rg2 Qd1 57.Rg1 Qf3 58.Rg3 Qe2+ 59.Rg2 Qd1 60.Rg1 Qd3 61.h5 Qe2+ 62.Rg2 Qxh5+ 63.Qxh5+ Bxh5 64.Rxc2 Bd1 65.Rc4 Kg6 66.Rd4 Bb3 67.Rf4 Kg5 68.Rxf7 Bxa4 69.Ra7 Bb3 70.Rxa5 Kf5 71.Ra1 Kxe5 72.Re1+ Kd6 73.Rxe6+ Bxe6 1/2-1/2
2025.05.31 50th OKU 2025
69061 Ercan, Selman (2056) FM Elgersma, Onno (2397) 0-1
1.d4 d5 2.c4 e6 3.Nf3 Nf6 4.g3 Bb4+ 5.Bd2 a5 6.Qc2 O-O 7.Bg2 Be7 8.O-O Nbd7 9.Bf4 dxc4 10.Qxc4 Nd5 11.Rd1 Nxf4 12.gxf4 c6 13.Qc2 Nf6 14.e3 Nd5 15.Nbd2 Ra7 16.Ne5 f6 17.Nd3 Kh8 18.Rac1 Bd6 19.Nf3 Qe7 20.Qe2 Bd7 21.Nd2 Be8 22.Qg4 Rg8 23.Nf3 Bg6 24.a3 Bf5 25.Qh4 g5 26.fxg5 fxg5 27.Qh5 Nf6 28.Qh6 Rg6 0-1
2025.05.29 1st Sofia Spring 2025
67877 GM Nikolov, Mo (2436) FM Elgersma, Onno (2397) 0-1
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.cxd5 exd5 5.Bg5 c6 6.e3 Be6 7.Bd3 Nbd7 8.Nf3 Be7 9.h3 Bd6 10.O-O h6 11.Bf4 Qb8 12.Qd2 O-O 13.Rfe1 Re8 14.a3 a5 15.Bxd6 Qxd6 16.Qc2 Rac8 17.b4 axb4 18.axb4 b5 19.Qb2 Ra8 20.Ra5 Nb6 21.Rea1 Nc4 22.Bxc4 Rxa5 23.Rxa5 dxc4 24.e4 Nh5 25.Ne2 Nf4 26.Nxf4 Qxf4 27.Nd2 f5 28.Ra3 fxe4 29.Re3 Bd5 30.Nb1 Qf6 31.Qd2 Ra8 32.Ra3 Rd8 33.Nc3 Bf7 34.Ne2 Bh5 35.g4 Bg6 36.Ra6 e3 37.fxe3 Qf3 38.Nf4 Be4 39.Kh2 Qh1+ 40.Kg3 Qg1+ 41.Kh4 g5+ 0-1
2025.05.28 1st Sofia Spring 2025
67859 FM Elgersma, Onno (2397) FM Gkavardinas, Antonios (2313) 1-0
1.e4 c5 2.Nf3 d6 3.Bb5+ Nd7 4.O-O a6 5.Be2 Ngf6 6.d3 e6 7.a4 Be7 8.Nfd2 O-O 9.f4 b6 10.Nc3 Bb7 11.Bf3 Qc7 12.g4 h6 13.h4 g5 14.hxg5 hxg5 15.Nc4 Nh7 16.Qe1 Bc6 17.Nd5 Qd8 18.Nxe7+ Qxe7 19.Qg3 Bxa4 20.e5 d5 21.Rxa4 b5 22.Ra3 bxc4 23.dxc4 gxf4 24.Bxf4 Nb6 25.cxd5 exd5 26.g5 Rfe8 27.c4 Qe6 28.Rd3 d4 29.Bxa8 Rxa8 30.b3 Nf8 31.Bc1 Nbd7 32.Rdf3 Nxe5 33.Rf6 Qe7 34.Qg2 Rb8 35.Qh3 Nfg6 36.Bf4 Rf8 37.Bd2 Qb7 38.Qg3 Qe4 39.Bf4 a5 40.Bxe5 Qxe5 41.Rxg6+ 1-0
2025.05.27 1st Sofia Spring 2025
67842 Velikov, Nikola (1872) FM Elgersma, Onno (2397) 0-1
1.c4 e6 2.Nc3 d5 3.d4 Nf6 4.cxd5 exd5 5.Bg5 c6 6.e3 h6 7.Bh4 Be7 8.Bd3 O-O 9.Qc2 Re8 10.Nge2 Nbd7 11.O-O a5 12.Rae1 b5 13.f3 Ba6 14.e4 dxe4 15.fxe4 b4 16.Bxa6 Rxa6 17.e5 bxc3 18.exf6 Nxf6 19.bxc3 c5 20.Bg3 cxd4 21.Nxd4 Bc5 22.Rxe8+ Qxe8 23.Kh1 Ne4 24.Bh4 Rg6 25.h3 Qa8 26.Nf3 Qd5 27.c4 Qf5 28.Qa4 Ng3+ 29.Bxg3 Rxg3 30.Qe8+ Kh7 31.Qe5 Qxe5 32.Nxe5 Ra3 33.Nd7 Bd4 34.Rd1 Be3 35.Re1 Bf2 36.Re8 h5 37.c5 Bg3 38.Nf8+ Kh6 39.Rd8 Rxa2 40.Rd1 Rc2 41.Nd7 a4 42.Nb6 a3 0-1
2025.05.26 1st Sofia Spring 2025
76722 Ribstein, Orel (2118) FM Elgersma, Onno (2397) 1/2-1/2
1.d4 e6 2.c4 d5 3.Nf3 Nf6 4.g3 Bb4+ 5.Nbd2 O-O 6.Bg2 b6 7.O-O Bb7 8.b3 Nbd7 9.Bb2 a5 10.Qc2 Rc8 11.Ne5 c5 12.a3 Bxd2 13.Qxd2 Ne4 14.Qe3 f5 15.Rad1 Nxe5 16.dxe5 Qe7 17.f3 d4 18.Qc1 Ng5 19.e3 dxe3 20.Qxe3 Nf7 21.Rd3 Rfd8 22.Rfd1 Rxd3 23.Rxd3 Rd8 24.Bc3 Qc7 25.Bf1 Rxd3 26.Bxd3 Qc6 27.Kf2 Ng5 28.Be2 h6 29.h4 Nf7 30.Bd3 Qe8 31.Be2 Qe7 32.Bd3 Nh8 33.Bc2 Ng6 34.Qd2 Qc7 35.Qd6 Qxd6 36.exd6 Nf8 37.b4 axb4 38.axb4 Bc6 39.b5 Bb7 40.g4 fxg4 41.fxg4 Kf7 42.h5 Nd7 43.Bg6+ Kf8 44.Ke3 Bg2 45.Bd3 Kf7 46.Bg6+ Kf8 47.Bd3 Kf7 48.Kf4 Kf8 49.Be1 Bb7 50.Bc3 Bg2 51.g5 hxg5+ 52.Kxg5 Bf3 53.Kg6 e5 54.Bf5 Ke8 55.Bxd7+ Kxd7 56.Bxe5 Be2 57.Bxg7 Bxc4 58.h6 Bxb5 59.Kf6 Bd3 60.Ke5 Bh7 61.Bf6 Bg8 62.Bg5 b5 63.Be3 c4 64.Bd2 Bh7 65.Bb4 Bg8 66.Kf6 Bh7 67.Ke5 Bg6 1/2-1/2
2025.05.26 1st Sofia Spring 2025
76744 FM Elgersma, Onno (2397) FM Krishnan, Ritvik (2266) 0-1
1.Nf3 d5 2.g3 Nf6 3.Bg2 c5 4.O-O e6 5.d3 Nc6 6.a4 Be7 7.Bf4 Bd6 8.Bxd6 Qxd6 9.Nbd2 e5 10.e4 d4 11.Nc4 Qc7 12.Kh1 O-O 13.Nfd2 Bg4 14.f3 Bh5 15.Qc1 Nd7 16.f4 f6 17.f5 b6 18.Rg1 Rfb8 19.Bf1 Bf7 20.g4 Kf8 21.g5 Ke7 22.Be2 Rh8 23.Qb1 a6 24.gxf6+ gxf6 25.Rg7 Rag8 26.Qg1 Kf8 27.Rxg8+ Rxg8 28.Qf2 Ke7 29.Qh4 h5 30.Qh3 b5 31.Na3 Qa5 32.Nf3 Qxa4 33.Qf1 Qa5 34.Qd1 Qd8 35.Nh4 Qe8 36.Nb1 Ncb8 37.Nd2 Rg7 38.Nf1 Qh8 39.Ng3 Qh6 40.Ng6+ Kd6 41.Nxh5 Rh7 42.Qc1 Qxc1+ 43.Rxc1 a5 44.Ra1 Nc6 45.b3 c4 46.bxc4 bxc4 47.dxc4 Kc5 48.Ra4 Rh6 49.h4 Bxg6 50.fxg6 Rxg6 51.Kh2 Nb6 52.Ra1 Nxc4 53.Ng3 Ne3 54.h5 Rg8 55.Ra4 Kb6 56.Kh3 Nb4 57.Nf5 Nxf5 58.exf5 e4 59.Bc4 Rc8 60.Bb3 e3 61.Kg3 Rh8 62.Bf7 Nxc2 63.Kf3 d3 64.Rc4 e2 65.Re4 e1=Q 0-1
2025.05.25 1st Sofia Spring 2025
76703 FM Elgersma, Onno (2397) IM Nikolov, Sas (2257) 1-0
1.Nf3 Nc6 2.d4 d5 3.Bf4 Bg4 4.e3 e6 5.c4 Bb4+ 6.Nc3 Nge7 7.h3 Bh5 8.Rc1 O-O 9.Bd3 Bg6 10.c5 Bxd3 11.Qxd3 Ng6 12.Bh2 Qd7 13.h4 e5 14.dxe5 Rfe8 15.O-O Rad8 16.Rfd1 Bxc3 17.Qxc3 Qf5 18.Qb3 Ncxe5 19.Nxe5 Nxe5 20.Bxe5 Qxe5 21.Qxb7 h5 22.Rd4 Rb8 23.Qxd5 Rxb2 24.a4 a5 25.c6 g6 26.Qxe5 Rxe5 27.Rd7 Rf5 28.f4 Kg7 29.Rxc7 Rd5 30.Rd7 Rxd7 31.cxd7 Rd2 32.Rc7 Kf6 33.Kf1 Ke6 34.Ke1 Rxd7 35.Rxd7 Kxd7 36.e4 1-0
2025.05.24 1st Sofia Spring 2025
76668 FM Elgersma, Onno (2397) Kishore, Kumar Jaganathan (2157) 1/2-1/2
1.Nf3 Nf6 2.d4 g6 3.Nbd2 d5 4.b3 Bg7 5.Bb2 O-O 6.e3 b6 7.Be2 Bb7 8.O-O Nbd7 9.c4 c5 10.dxc5 Nxc5 11.b4 Nce4 12.Nxe4 Nxe4 13.Bxg7 Kxg7 14.Qd4+ Kg8 15.Rfd1 Qc7 16.Rac1 Rac8 17.h4 Rfd8 18.c5 bxc5 19.bxc5 Nxc5 20.h5 Ne6 21.Rxc7 Nxd4 22.Rxb7 Nxe2+ 23.Kh2 Nc3 24.Rd4 Kf8 25.Rh4 Rc4 26.Rh3 Rdc8 27.hxg6 hxg6 28.Rxa7 Ne4 29.Ne5 R4c7 30.Rxc7 Rxc7 31.f3 Nd6 32.Rh8+ Kg7 33.Ra8 Rc3 34.Ra5 Rxe3 35.Rxd5 Ra3 36.Rd2 Nb5 37.Nc4 Ra4 38.Nb6 Ra3 39.Rd5 Nd6 40.Rd2 Nb5 41.Rd5 Nd6 1/2-1/2
2025.05.24 1st Sofia Spring 2025
76686 Aydemir, Umut (2140) FM Elgersma, Onno (2397) 0-1
1.e4 e6 2.d4 d5 3.Nd2 c5 4.Ngf3 cxd4 5.Nxd4 Nc6 6.Bb5 Bd7 7.Nxc6 bxc6 8.Bd3 Qc7 9.Qe2 Ne7 10.e5 Ng6 11.Nf3 c5 12.b3 c4 13.bxc4 Bb4+ 14.Kf1 dxc4 15.Be4 Rb8 16.Rb1 O-O 17.g3 Bc6 18.Kg2 Bc5 19.Bd2 c3 20.Bxc3 Bxe4 21.Qxe4 Bxf2 22.Bb4 Bc5 23.Bxc5 Qxc5 24.c4 h6 25.Rxb8 Rxb8 26.Rb1 Rd8 27.Rb5 Qa3 28.Qc2 a6 29.Qb2 Qd3 30.Rb8 Rxb8 31.Qxb8+ Kh7 32.Qb3 Qe2+ 33.Kg1 Ne7 34.Qc3 Nf5 35.Ne1 Kg8 36.Nc2 h5 37.c5 h4 38.gxh4 Nxh4 39.Ne1 Nf5 40.Ng2 Qd1+ 41.Kf2 Nd4 42.Nf4 Qa4 43.Qb2 Qc4 44.Qb8+ Kh7 45.Qb1+ Nf5 46.Nd3 Qe4 47.Qc2 Qh4+ 48.Kg1 Qd4+ 49.Nf2 Qxe5 50.c6 g6 51.Qc1 Nd4 52.Ng4 Qf5 53.Qh6+ Kg8 54.Nf6+ Qxf6 55.c7 Nf3+ 56.Kf2 Nxh2+ 57.Kg3 Qc3+ 58.Kxh2 Qxc7+ 0-1
2025.05.23 1st Sofia Spring 2025
76635 Boeren, Jurriaan (2104) FM Elgersma, Onno (2397) 1/2-1/2
1.e4 c5 2.Nf3 Nc6 3.Bb5 e6 4.Bxc6 bxc6 5.d3 Qc7 6.Qe2 e5 7.Nh4 Ne7 8.O-O Ng6 9.Nxg6 hxg6 10.f4 Be7 11.Qf3 Bf6 12.Na3 Ba6 13.f5 gxf5 14.Qxf5 d5 15.Be3 Qe7 16.Qf2 Bh4 17.g3 d4 18.Bd2 Bf6 19.Nc4 Bc8 20.a3 Be6 21.b4 Rb8 22.Rfb1 O-O 23.bxc5 Bxc4 24.dxc4 Qe6 25.Qe2 Be7 26.Bb4 f5 27.exf5 Rxf5 28.Rf1 Rbf8 29.Rxf5 Rxf5 30.Qe4 Qg6 31.Re1 Qf6 32.a4 a5 33.Ba3 Rf3 34.Ra1 Rf2 35.Re1 Rf3 36.Ra1 Re3 37.Qg4 Qh6 38.Qc8+ Kh7 39.Qf5+ Qg6 40.Qh3+ Qh6 41.Qf5+ Kg8 42.Qc8+ Kh7 1/2-1/2
2025.05.10 Dutch League 2024-25
92657 FM Lammens, Tim (2253) FM Elgersma, Onno (2397) 1/2-1/2
1.c4 c5 2.Nf3 Nf6 3.Nc3 Nc6 4.g3 d5 5.d4 e6 6.cxd5 exd5 7.Bg2 cxd4 8.Nxd4 Bc5 9.Nb3 Bb6 10.Na4 O-O 11.Nxb6 axb6 12.Be3 Re8 13.O-O Bg4 14.Re1 h5 15.Nd4 h4 16.gxh4 Qd7 17.Bf4 Nxd4 18.Qxd4 Ra4 19.b4 Bh3 20.Bf3 Ra3 21.Bg3 Qe6 22.e3 Ne4 23.Red1 Qf5 24.Bg2 Nc3 25.Rd2 Re4 26.Qxb6 d4 27.Qd8+ Kh7 28.Qg5 Qxg5 29.hxg5 dxe3 30.fxe3 Bxg2 31.Kxg2 Rxe3 32.Re1 Rxe1 33.Bxe1 Ne4 34.Rd5 Kg6 35.h4 Re3 36.Kf1 Kh5 37.Rd7 b5 38.Rxf7 g6 39.Rf4 Nd6 40.Rd4 Nf5 41.Rd5 Ra3 42.Ke2 Rxa2+ 43.Kd3 Ra1 44.Bd2 Rh1 45.Kc3 Rh3+ 46.Kb2 Rh2 47.Kc3 Rh3+ 48.Kb2 Rh2 49.Kc3 Rh3+ 1/2-1/2
2025.04.05 Dutch League 2024-25
123023 FM Elgersma, Onno (2412) FM Los, S (2266) 0-1
1.Nf3 Nf6 2.d4 g6 3.Nbd2 Bg7 4.e4 d6 5.Bb5+ c6 6.Bd3 O-O 7.O-O Qc7 8.Re1 e5 9.c3 Nbd7 10.Bf1 d5 11.dxe5 Nxe5 12.Nxe5 Qxe5 13.Nf3 Qc7 14.e5 Ne4 15.c4 Rd8 16.cxd5 cxd5 17.Be3 Bg4 18.h3 Bxf3 19.gxf3 d4 20.Bf4 Nc5 21.Bg3 Qe7 22.f4 d3 23.Qd2 Rd4 24.Bg2 Rad8 25.Rac1 Bh6 26.Rc3 a5 27.b3 b6 28.h4 Qe6 29.Qe3 Qf5 30.Rc4 d2 31.Rd1 Rxc4 32.bxc4 Qc2 33.Bf3 Rd3 34.Qe2 Na4 35.e6 Nc3 36.e7 Nxe2+ 37.Kh2 Qxd1 38.e8=Q+ Bf8 39.Bxe2 Qe1 0-1
2025.03.08 Dutch League 2024-25
148537 FM Klaska, Philipp Leon (2231) FM Elgersma, Onno (2420) 1-0
1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 dxe4 5.Nxe4 Be7 6.Bxf6 gxf6 7.Ne2 f5 8.N4c3 c6 9.g3 Nd7 10.Bg2 Nf6 11.O-O h5 12.h4 Qc7 13.Qd3 Bd7 14.Rab1 Rg8 15.b4 a6 16.a4 Rg4 17.Rfe1 Kf8 18.Nd1 Bd6 19.Ne3 Rg7 20.Nc4 Nd5 21.Nxd6 Qxd6 22.Qd2 f4 23.Bxd5 fxg3 24.Bf3 gxf2+ 25.Kxf2 Qh2+ 26.Ke3 e5 27.Rh1 exd4+ 28.Qxd4 Re8+ 29.Kd2 Qc7 30.Rbg1 Bg4 31.Kc1 c5 32.Qc3 b6 33.Bxg4 hxg4 34.Ng3 Qf4+ 35.Kb1 Qf3 36.Qd2 cxb4 37.Nh5 Rg6 38.Rf1 Qc6 39.Qxb4+ Kg8 40.Qb3 Re7 41.Rhg1 Qc5 42.Nf6+ Kf8 43.Rxg4 Rxg4 44.Nxg4 Qh5 45.Nf6 Qxh4 46.Qc3 Re6 47.Qc8+ Ke7 48.Qc7+ Kf8 49.Qd8+ Kg7 50.Qg8+ 1-0
2025.02.23 84th Noteboom Open
54100 FM Elgersma, Onno (2359) FM Lombaers, P (2360) 1/2-1/2
1.Nf3 c5 2.c4 Nf6 3.Nc3 e6 4.e3 d5 5.cxd5 exd5 6.Bb5+ Nc6 7.d4 Bd7 8.O-O cxd4 9.exd4 Be7 10.h3 O-O 11.Bf4 Rc8 12.Bd3 Qb6 13.Qd2 Bb4 14.Rfe1 Ne4 15.Bxe4 dxe4 16.Rxe4 Bf5 17.Re3 Rfd8 18.Rd1 Na5 19.b3 Qc6 20.Ne5 Bxc3 21.Nxc6 Bxd2 22.Ne7+ Kf8 23.Rxd2 Rc1+ 24.Kh2 Be6 25.d5 Kxe7 26.Bg5+ f6 27.Rxe6+ Kf7 28.Be3 b6 29.Re2 Rd1 30.Bf4 Rd7 31.d6 Nc6 32.Bg3 Rd5 33.Re8 Ne5 34.Ra8 R5xd6 35.Bxe5 fxe5 36.Rxe5 Rd2 37.Rf5+ Kg6 38.Rf3 Rxa2 39.g4 Rf7 40.Rxf7 Kxf7 41.Kg3 Ra3 42.f3 a5 43.Ra7+ Kf6 44.h4 h6 45.b4 axb4 46.g5+ hxg5 47.hxg5+ Kg6 48.Rb7 Ra6 49.Kg4 b3 50.f4 b2 51.f5+ Kh7 52.Kh5 Kg8 53.g6 Kf8 54.f6 gxf6 55.g7+ Kg8 56.Kh6 Ra8 57.Rxb6 f5 58.Rxb2 f4 59.Rf2 Ra6+ 60.Kg5 Kxg7 61.Rxf4 1/2-1/2
2025.02.23 84th Noteboom Open
54106 GM Smeets, J (2561) FM Elgersma, Onno (2359) 1/2-1/2
1.e4 e6 2.d4 d5 3.exd5 exd5 4.Nf3 Nf6 5.Bd3 c5 6.c3 cxd4 7.Nxd4 Nc6 8.O-O Be7 9.Nf5 Bxf5 10.Bxf5 O-O 11.Be3 Re8 12.Bh3 Ne4 13.Nd2 Ng5 14.Bg4 Bf6 15.Nb3 Qd6 16.Qc2 Rad8 17.Rad1 g6 18.Bxg5 Bxg5 19.Bf3 Qe6 20.Nc5 Qe7 21.Nd3 Qc7 22.Qa4 Re6 23.Nc5 Red6 24.Rfe1 a6 25.b4 Bf6 26.Qb3 Na5 27.Qc2 Nc4 28.g3 a5 29.Qc1 b6 30.Nb3 Ne5 31.Be2 h5 32.Nd4 Qd7 33.bxa5 bxa5 34.Qf4 Nc4 35.Bf1 Bg7 36.Re2 Rf6 37.Qg5 Qg4 38.Qxg4 hxg4 39.a4 Rfd6 40.Nb5 R6d7 41.h3 Nb6 42.Ra2 gxh3 43.Bxh3 Re7 44.Bg2 Rde8 45.Kf1 Re5 46.Bf3 g5 47.Nd4 Rc8 48.Rd3 Rc4 49.Bd1 Re4 50.Bb3 Rc5 51.Nb5 g4 52.Re2 Rxe2 53.Kxe2 Be5 54.Re3 f6 55.Kd3 Nc4 56.Re1 Nb2+ 57.Kc2 Nc4 58.Rh1 Kg7 59.Kd3 Nd6 60.Rc1 Nxb5 61.axb5 Rxb5 62.Ba4 Rb2 63.Rc2 Rb1 64.Bd7 Rb3 65.Be6 Rb5 66.Bxg4 a4 67.Ra2 Ra5 68.Be6 a3 69.f4 Bc7 70.Kc2 Bd6 71.Kb3 Rb5+ 72.Ka4 Rc5 73.Kb3 Rb5+ 74.Ka4 Rc5 75.Kb3 Rb5+ 76.Ka4 Rc5 77.Kb3 Rb5+ 1/2-1/2
2025.02.22 84th Noteboom Open
54085 Dinanath, Hrdya (2075) FM Elgersma, Onno (2359) 0-1
1.e4 e6 2.d4 d5 3.Nd2 c5 4.exd5 Qxd5 5.Ngf3 cxd4 6.Bc4 Qd7 7.O-O Nc6 8.Nb3 Nf6 9.Nbxd4 Nxd4 10.Qxd4 Qxd4 11.Nxd4 a6 12.a4 Bd7 13.h3 Rc8 14.Bb3 Bc5 15.Rd1 O-O 16.Bf4 Rfd8 17.Be5 Be8 18.Nf3 Bc6 19.Nd4 Be4 20.c3 Bg6 21.Kf1 Ne4 22.f3 Nf6 23.Ke2 Be7 24.g4 h5 25.Rd2 hxg4 26.hxg4 Nd7 27.Bg3 Nc5 28.Bd1 Bg5 29.f4 Bf6 30.Bc2 Bxc2 31.Rxc2 Ne4 32.Rcc1 Nxg3+ 33.Kf3 e5 34.g5 exd4 35.gxf6 Nf5 0-1
2025.02.22 84th Noteboom Open
54091 FM Elgersma, Onno (2359) Groenewoud, Joel (2029) 1-0
1.d4 Nf6 2.Nf3 g6 3.Nbd2 d5 4.b3 Bg7 5.Bb2 O-O 6.e3 c5 7.dxc5 Qa5 8.a3 Qxc5 9.b4 Qc7 10.c4 dxc4 11.Bxc4 Nc6 12.Rc1 Qd6 13.O-O a6 14.Qe2 b5 15.Ba2 Be6 16.Bb1 Rac8 17.Rc5 Nd7 18.Ne4 Qb8 19.Bxg7 Nxc5 20.Bxf8 Nxe4 21.Bxe4 Kxf8 22.Qb2 Kg8 23.h4 h5 24.Rd1 Bg4 25.Rd5 Bxf3 26.Bxf3 Nd8 27.Bxh5 Rc4 28.g3 e6 29.Rg5 e5 30.Be2 Ne6 31.Rxe5 Rc2 32.Qxc2 Qxe5 33.Qc8+ Kh7 34.Qxa6 Ng7 1-0
2025.02.22 84th Noteboom Open
54095 Van der Togt, Twan (2102) FM Elgersma, Onno (2359) 0-1
1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 dxe4 5.Nxe4 Be7 6.Bxf6 Bxf6 7.Nf3 O-O 8.c3 b6 9.Bd3 Bb7 10.O-O Nd7 11.Qe2 Qe7 12.Ba6 Bd5 13.Bc4 c6 14.Bxd5 cxd5 15.Nxf6+ Qxf6 16.Rfe1 a6 17.a4 Rfc8 18.Ne5 Nxe5 19.Qxe5 Qxe5 20.Rxe5 b5 21.axb5 axb5 22.Ree1 g5 23.h3 Kg7 24.Kh2 Kg6 25.Kg3 b4 26.Rxa8 Rxa8 27.Rb1 bxc3 28.bxc3 h5 29.Kf3 h4 30.Rc1 Ra3 31.Ke2 Kf5 32.Ke3 Ra2 33.Kf3 f6 34.Ke3 Rb2 35.Kf3 e5 36.Ke3 Ke6 37.dxe5 fxe5 38.Kf3 Kf5 39.Ke3 Ra2 40.Rd1 Ke6 41.Rc1 Ra3 42.Ke2 Kd6 43.Kd2 0-1
2025.02.21 84th Noteboom Open
54081 FM Elgersma, Onno (2359) FM Becx, C (2037) 1-0
1.Nf3 f5 2.g3 Nf6 3.Bg2 d6 4.d4 e6 5.c4 Be7 6.O-O O-O 7.Nc3 Ne4 8.Nxe4 fxe4 9.Nd2 d5 10.f3 Nc6 11.e3 dxc4 12.f4 b5 13.a4 bxa4 14.Bxe4 Bd7 15.Nxc4 Rb8 16.d5 exd5 17.Qxd5+ Kh8 18.Qh5 1-0
2025.02.08 Dutch League 2024-25
178586 FM Elgersma, Onno (2359) GM Ernst, S (2514) 0-1
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.d3 d6 7.c4 O-O 8.h3 Nd7 9.Be3 Bf6 10.Nc3 Nd4 11.Bxd7 Nxf3+ 12.Qxf3 Qxd7 13.Nd5 Bd8 14.Qg3 c6 15.Nc3 b5 16.f4 f6 17.Rad1 Bc7 18.b3 Qf7 19.Rf3 Bb7 20.Qf2 Rac8 21.Rc1 Qd7 22.h4 h6 23.Rf1 Rce8 24.Rg3 d5 25.f5 Kh8 26.Rg6 Rf7 27.Ne2 bxc4 28.bxc4 dxe4 29.dxe4 Qd3 30.Ng3 Qxc4 31.Qf3 Bd6 32.Rc1 Qd3 33.Nh5 Bf8 34.Rd1 Qc3 35.Kh2 c5 36.Rc1 Qa3 37.Re1 Qb4 38.Qg3 Bxe4 39.Bxh6 Bxf5 40.Bxg7+ Bxg7 41.Rxg7 Qb7 42.Rxf7 Qxf7 43.Qf3 Qg6 44.Rf1 Bd3 45.Qxf6+ Qxf6 46.Rxf6 e4 47.Rh6+ Kg8 48.Nf6+ Kg7 49.Nxe8+ Kxh6 50.Nf6 Kg6 51.Nd5 Bc4 52.Nc3 Kf5 53.h5 Ke5 54.Kg3 Kd4 55.Ne2+ Ke3 56.h6 Bg8 57.Nc3 Kd3 58.Nd5 e3 59.Nf6 c4 60.Kf3 e2 61.Kf2 c3 62.Nd5 Bxd5 63.h7 Kd2 64.h8=Q e1=Q# 0-1
2024.12.30 60th Groningen Open 2024
239116 GM Schoppen, Casper (2539) FM Elgersma, Onno (2322) 1/2-1/2
1.e4 e6 2.d4 d5 3.exd5 exd5 4.Nf3 Nf6 5.Bd3 Bd6 6.O-O O-O 7.h3 1/2-1/2
2024.12.29 60th Groningen Open 2024
239082 FM Elgersma, Onno (2322) IM Maatman, Nick (2375) 0-1
1.e4 e5 2.Nf3 Nf6 3.Nxe5 d6 4.Nf3 Nxe4 5.Nc3 Nxc3 6.dxc3 Be7 7.Be3 Nd7 8.Qd2 O-O 9.O-O-O Nf6 10.h4 Bg4 11.Be2 Qd7 12.Ng5 Bxe2 13.Qxe2 h6 14.Qd3 g6 15.Ne4 h5 16.Bh6 Rfe8 17.Qd4 Qf5 18.Rhe1 c5 19.Nxf6+ Bxf6 20.Rxe8+ Rxe8 21.Qf4 Qxf4+ 22.Bxf4 Bxh4 23.g3 Be7 24.b4 Rd8 25.Rd5 f5 26.Kd2 Kf7 27.bxc5 dxc5 28.Rxd8 Bxd8 29.Kd3 Ke6 30.Kc4 Be7 31.Kb5 g5 32.Bb8 h4 33.gxh4 gxh4 34.Bh2 Bd6 35.f4 Kd5 0-1
2024.12.28 60th Groningen Open 2024
239053 IM Manish Anto, Cristiano F (2296) FM Elgersma, Onno (2322) 1/2-1/2
1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.e5 Nfd7 5.f4 c5 6.Nf3 Nc6 7.Be3 Be7 8.Be2 a6 9.Qd2 b5 10.a3 O-O 11.O-O Qb6 12.Nd1 f6 13.c3 a5 14.exf6 Nxf6 15.Nf2 Rb8 16.dxc5 Bxc5 17.Bxc5 Qxc5 18.Nd4 b4 19.axb4 axb4 20.Kh1 bxc3 21.bxc3 Ne4 22.Nxe4 dxe4 23.Bg4 Nxd4 24.Qxd4 Qxd4 25.cxd4 Rb6 26.Rae1 Bb7 27.Rb1 Rxf4 28.Bxe6+ Kh8 29.Kg1 Rxf1+ 30.Rxf1 g6 31.d5 e3 32.g4 h6 33.h4 e2 34.Rf8+ Kg7 35.Rf7+ Kh8 36.Kf2 Ba6 37.Rf8+ Kg7 38.Rf7+ Kh8 1/2-1/2
2024.12.27 60th Groningen Open 2024
239024 FM Elgersma, Onno (2322) FM Smeets, Kobe (2349) 1-0
1.Nf3 d5 2.c4 e6 3.g3 dxc4 4.Qa4+ Nd7 5.Qxc4 a6 6.Qc2 b5 7.Bg2 Bb7 8.O-O Ngf6 9.d3 Bd6 10.e4 Be7 11.Qe2 O-O 12.Rd1 c5 13.Nc3 Rc8 14.b3 Qb6 15.Bb2 Rfd8 16.Rac1 Nb8 17.e5 Nd5 18.Ne4 Nc6 19.h4 a5 20.a3 a4 21.bxa4 bxa4 22.Rc4 Ba6 23.Rc2 Nd4 24.Nxd4 cxd4 25.Rdc1 Rxc2 26.Rxc2 Rb8 27.Kh2 Qb3 28.Rd2 Nc3 29.Qg4 Nxe4 30.Bxe4 Bxa3 31.Bxd4 Bc1 32.Rd1 Bb2 33.Be3 Qb4 34.d4 a3 35.d5 exd5 36.Rxd5 a2 37.e6 Qe7 38.exf7+ Qxf7 39.Rh5 h6 40.Bd5 Qxd5 41.Rxd5 a1=Q 42.Qe6+ Kh7 43.Rd7 Bf6 44.Ra7 Rb1 45.Qf5+ Kg8 46.Ra8+ Kf7 47.Qd5+ 1-0
2024.12.26 60th Groningen Open 2024
238988 GM Narayanan, SL (2647) FM Elgersma, Onno (2322) 1-0
1.d4 d5 2.c4 e6 3.Nf3 Nf6 4.Nc3 h6 5.e3 Bd6 6.b3 O-O 7.Bb2 b6 8.cxd5 exd5 9.Bd3 Bb7 10.O-O a6 11.Ne5 c5 12.Ne2 Re8 13.f4 Nc6 14.Rc1 Rc8 15.Ng3 cxd4 16.exd4 Nb4 17.Rxc8 Qxc8 18.Bb1 Bf8 19.a3 Nc6 20.Qf3 Ne7 21.Rc1 Qd8 22.Nh5 Ne4 23.f5 f6 24.Ng4 Nd2 25.Qg3 Kh8 26.Ngxf6 gxf6 27.Nxf6 Nxb1 28.Rc7 Bg7 29.Nxe8 Qxe8 30.Qe1 Bf6 31.Rxb7 Qc8 32.Rxb6 Qxf5 33.Rxf6 Qxf6 34.Qxb1 Nf5 35.Qe1 Kh7 36.Qe5 Qf7 37.Bc1 h5 38.Bg5 Kg6 39.h4 Ng7 40.b4 Qf5 41.Qe2 Qc8 42.a4 Qc6 43.b5 axb5 44.axb5 Qb6 45.Qc2+ Kf7 46.Qc5 Qe6 47.b6 Nf5 48.Qc7+ Kg6 49.b7 Nxd4 50.Qe7 Qb6 51.Qf6+ 1-0
2024.12.24 60th Groningen Open 2024
238960 FM Elgersma, Onno (2322) FM Palchuk, Andrii (2372) 1-0
1.e4 c5 2.Nf3 Nc6 3.Bb5 Nf6 4.Nc3 Qc7 5.O-O Nd4 6.Re1 a6 7.Bc4 d6 8.Nd5 Nxd5 9.exd5 b5 10.Nxd4 cxd4 11.Bb3 d3 12.Qf3 dxc2 13.d3 Bb7 14.Bf4 e5 15.d4 f6 16.Rac1 Be7 17.Bxc2 Qd7 18.Qh5+ Kf8 19.Bg3 Bxd5 20.dxe5 dxe5 21.Rcd1 Qc6 22.Rxd5 Qxd5 23.Bb3 1-0
2024.12.23 60th Groningen Open 2024
245365 IM De Winter, Arthur (2446) FM Elgersma, Onno (2322) 1/2-1/2
1.d4 d5 2.c4 e6 3.Nf3 Nf6 4.g3 Bb4+ 5.Bd2 a5 6.Qc2 O-O 7.Bg2 Be7 8.O-O Nbd7 9.Rd1 c6 10.Bf4 h6 11.Nc3 dxc4 12.Nd2 Nd5 13.Nxc4 Nxf4 14.gxf4 a4 15.a3 Nf6 16.e3 Nd5 17.Rac1 Bd7 18.Ne4 Be8 19.Qe2 Ra7 20.Kh1 b6 21.Ne5 Rc7 22.Rg1 f6 23.Nd3 Kh8 24.Bf3 f5 25.Nc3 Bh4 26.Nxa4 g5 27.Bh5 Rg8 28.Bxe8 Qxe8 29.Nc3 Nxc3 30.Rxc3 c5 31.Qf3 g4 32.Qg2 Bf6 33.Rgc1 Qh5 34.Kg1 Rcg7 35.Ne5 Bh4 36.e4 cxd4 37.Rc8 fxe4 38.Qxe4 g3 39.Rxg8+ Rxg8 40.hxg3 Bxg3 41.Nf7+ Qxf7 42.Qxd4+ Qg7 43.Qxg7+ Rxg7 44.fxg3 Rxg3+ 45.Kf2 Rb3 46.Rc6 1/2-1/2
2024.12.22 60th Groningen Open 2024
245343 Ten Dam, Bram (2002) FM Elgersma, Onno (2322) 0-1
1.e4 e6 2.d4 d5 3.e5 c5 4.c3 Qa5 5.dxc5 Qc7 6.Nf3 Bxc5 7.Bd3 Ne7 8.O-O Ng6 9.Re1 O-O 10.h4 Nc6 11.Qe2 f6 12.exf6 Rxf6 13.Bxg6 Rxg6 14.Be3 Bxe3 15.Qxe3 Bd7 16.Nbd2 Rf8 17.Rad1 Rf4 18.h5 Rh6 19.g3 Rf5 20.Nb3 Rfxh5 21.Kg2 e5 22.Rxd5 Bh3+ 23.Kg1 Be6 24.Rd2 Qc8 25.Kg2 Bxb3 0-1
2024.12.21 60th Groningen Open 2024
245322 FM Elgersma, Onno (2322) Van Helvoort, R (2135) 1-0
1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Be2 Bb4 7.O-O Bxc3 8.bxc3 Nxe4 9.Nxc6 dxc6 10.Bd3 Nf6 11.Ba3 b6 12.Qf3 Qd5 13.Qg3 Nh5 14.Qh4 Nf6 15.Rfd1 Qa5 16.Bb4 Qh5 17.Qg3 c5 18.Qxg7 Ke7 19.Qxh8 Bb7 20.Qg7 Rg8 21.Qxg8 Nxg8 22.Ba3 Qg4 23.Bf1 Qa4 24.Bc1 Qxc2 25.Bg5+ f6 26.Bd2 Bc6 27.Rac1 Qg6 28.c4 Nh6 29.Bxh6 Qxh6 30.Rc3 Qf4 31.Ra3 Qc7 32.Re1 Qb7 33.Rh3 Be4 34.Rhe3 Bf5 35.Be2 e5 36.f4 Qa6 37.fxe5 fxe5 38.Rxe5+ Kf6 39.Re3 Qxa2 40.g4 Bg6 41.h4 Qd2 42.Rf1+ Kg7 43.Re7+ Kg8 44.Rd1 1-0
2024.12.14 Dutch League 2024-25
248954 FM Elgersma, Onno (2322) IM Willemze, T (2328) 1-0
1.e4 c6 2.Nc3 d5 3.d4 dxe4 4.Nxe4 Nf6 5.Nxf6+ exf6 6.c3 Bd6 7.Bd3 O-O 8.Ne2 Re8 9.Qc2 h6 10.O-O Nd7 11.Be3 Nf8 12.Rfe1 Qc7 13.Ng3 Be6 14.Rad1 Rad8 15.c4 Bg4 16.Rc1 c5 17.dxc5 Bxc5 18.Bxc5 Qxc5 19.Rxe8 Rxe8 20.Qc3 a5 21.Ne4 Qc7 22.c5 Nd7 23.h3 Be6 24.Nd6 Rb8 25.Nb5 Qd8 26.Nd4 Ne5 27.Be2 Rc8 28.a3 Bd5 29.b4 b6 30.Nf5 Ba8 31.Rd1 Qf8 32.Qg3 Ng6 33.cxb6 axb4 34.axb4 Qxb4 35.Bh5 Kh7 36.Nd6 Rc3 37.Qg4 Qxb6 38.Nxf7 Ne7 39.Rd8 Rc1+ 40.Kh2 Qc7+ 41.f4 g6 42.Rd7 gxh5 43.Rxc7 Rc4 44.Rc6 Rxc6 45.Qxh5 Rc7 46.Nd6 Kg7 1-0
2024.11.23 Dutch League 2024-25
276258 IM Vandenbussche, T (2435) FM Elgersma, Onno (2322) 0-1
1.e4 e6 2.d4 d5 3.e5 c5 4.c3 Nc6 5.Nf3 Bd7 6.Be2 Nge7 7.Na3 Nf5 8.Nc2 Be7 9.Bd3 cxd4 10.cxd4 O-O 11.g4 Nh4 12.Nxh4 Bxh4 13.g5 Bxg5 14.Qh5 h6 15.Rg1 Bxc1 16.Rxc1 f5 17.Qxh6 Rf7 18.Ke2 Qb6 19.Qh4 Rc8 20.Rg5 Nxd4+ 21.Nxd4 Rxc1 22.Rh5 Rf8 23.Rh8+ Kf7 24.Qh5+ Ke7 25.Qg5+ Kf7 26.Rh7 Rg8 27.Nb3 Rcc8 28.Qf6+ Ke8 29.Rxg7 Rxg7 30.Qxg7 Qb4 31.h4 Qg4+ 32.Qxg4 fxg4 33.Ke3 Ke7 34.h5 Rh8 35.Bg6 Be8 36.Kf4 Bxg6 37.hxg6 Rf8+ 38.Kg3 Rg8 39.Kxg4 Rxg6+ 40.Kf4 Rg1 41.Nc5 Re1 42.f3 b6 43.Nd3 Re2 44.a3 Kd7 45.a4 Ke7 46.b3 d4 47.b4 Re3 48.Nc1 Rc3 49.Ne2 Rc4 50.Ke4 Rxb4 51.Nxd4 Rxa4 52.Kd3 Rxd4+ 0-1
2024.11.09 Dutch League 2024-25
291806 FM Elgersma, Onno (2322) FM Baselmans, Luuk (2325) 0-1
1.Nf3 d5 2.g3 Nf6 3.Bg2 e6 4.O-O Be7 5.d3 c5 6.Nbd2 Nc6 7.e4 O-O 8.Re1 b5 9.Qe2 Qb6 10.e5 Nd7 11.Nf1 a5 12.h4 a4 13.Bf4 a3 14.b3 Ba6 15.h5 h6 16.Ne3 Rfc8 17.Qd2 Bf8 18.Ng4 Qd8 19.c3 Rab8 20.Rad1 d4 21.c4 bxc4 22.dxc4 Nb4 23.Nfh2 Bb7 24.Bxb7 Rxb7 25.Re4 Kh7 26.Qe2 Rb6 27.Bc1 Ra8 28.Rf4 Kg8 29.Qf3 Qe8 30.Rxf7 Qxf7 31.Qxa8 Nxa2 32.Bxa3 Nc3 33.Rd3 Rb8 34.Qc6 Rxb3 35.Rf3 Qe8 36.Qa6 Rb6 37.Qa7 Qc8 38.Rxf8+ Kxf8 39.Bxc5+ Qxc5 40.Qxd7 Qc6 41.Qd8+ Kf7 42.Nf3 Rb7 43.Kg2 Rd7 44.Qh8 Qe4 45.Nf6 gxf6 46.exf6 e5 47.Qxh6 d3 48.Qg7+ Ke6 49.Qg8+ Kxf6 50.h6 Ne2 51.g4 Nd4 52.Qh8+ Ke7 53.Qg7+ Kd6 54.c5+ Kc6 55.Qf6+ Kd5 56.h7 Qxg4+ 57.Kf1 Qh3+ 58.Ke1 Nxf3+ 0-1
2024.11.02 2nd Amsterdam Chess Open
308291 FM Elgersma, Onno (2322) Bruns, Kai-Christian (2088) 0-1
1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Be2 Bb4 7.O-O Bxc3 8.bxc3 Nxe4 9.Nxc6 dxc6 10.Bd3 Nc5 11.Qg4 Qf6 12.Bg5 Qxc3 13.Qg3 h6 14.Bf4 Nxd3 15.cxd3 Qf6 16.Be5 Qg5 17.Bxg7 Rg8 18.Bxh6 Qxg3 19.fxg3 c5 20.Rf6 e5 21.Re1 Ke7 22.Rf2 f6 23.Ref1 Be6 24.Rxf6 Bxa2 25.Be3 b6 26.Rh6 Kd7 27.Rh7+ Kc6 28.Ra1 Be6 29.Raxa7 Rxa7 30.Rxa7 Bf5 31.Kf2 Bxd3 32.h4 b5 33.h5 b4 34.Bd2 Rb8 35.Ke3 c4 36.Bc1 Rg8 37.h6 Rxg3+ 38.Kf2 Rg8 39.Ra6+ Kc5 40.Ra5+ Kd4 41.Rb5 Kc3 42.Rxe5 Kc2 43.Be3 b3 44.Bd4 b2 45.h7 Rf8+ 0-1
2024.11.01 2nd Amsterdam Chess Open
308282 Jonsson, Gauti Pall (2137) FM Elgersma, Onno (2322) 1/2-1/2
1.e4 e6 2.d4 d5 3.Bd3 dxe4 4.Bxe4 Nf6 5.Bf3 c5 6.Ne2 Nc6 7.Be3 e5 8.Bxc6+ bxc6 9.dxe5 Qxd1+ 10.Kxd1 Ng4 11.Nd2 Be7 12.Ke1 Nxe5 13.Ne4 O-O 14.Bxc5 Re8 15.Bxe7 Rxe7 16.f3 Ba6 17.Nd4 Rd8 18.Nf5 Nxf3+ 19.gxf3 Re5 20.Nxg7 Kxg7 21.Rg1+ Kf8 22.Rd1 Rb8 23.Kf2 f5 24.Ng5 Re2+ 25.Kg3 h6 26.Nh7+ Kf7 27.Rd7+ Re7 28.Rxe7+ Kxe7 29.Kf4 Kf7 30.Kxf5 Bc8+ 31.Ke5 Rb5+ 32.Kd6 Bf5 33.Ng5+ hxg5 34.Rxg5 Kf6 35.Rg8 Rxb2 36.Rf8+ Kg5 37.h4+ Kf4 38.c4 Rxa2 39.Kxc6 a5 40.h5 a4 41.Kb5 a3 42.Kb4 Ra1 43.Kb3 a2 44.h6 Rh1 45.Kxa2 Rxh6 46.Kb3 Rh3 47.c5 Rxf3+ 48.Kb4 Ke5 49.c6 Rf1 50.Kc5 Rc1+ 51.Kb6 Be6 52.Rd8 Rb1+ 53.Ka6 Rc1 54.Kb6 Kf6 55.c7 Ke7 56.Kb7 Rb1+ 57.Ka7 Bd7 58.c8=Q Bxc8 59.Rxc8 1/2-1/2
2024.10.12 Dutch League 2024-25
324709 IM Cardon, H (2344) FM Elgersma, Onno (2311) 0-1
1.d4 e6 2.c4 Nf6 3.Nc3 d5 4.cxd5 exd5 5.Bg5 c6 6.e3 Bd6 7.Bd3 O-O 8.Nge2 Re8 9.Qc2 h6 10.Bh4 a5 11.h3 Na6 12.a3 Nc7 13.O-O Ne6 14.f3 Ng5 15.e4 Nfxe4 16.fxe4 Nxh3+ 17.gxh3 Qxh4 18.e5 Rxe5 19.Rf2 Bxh3 20.dxe5 Bc5 21.Ne4 Bxf2+ 22.Nxf2 Qg5+ 23.Ng4 Qxg4+ 24.Kf2 Qh4+ 25.Kg1 Re8 26.Qc3 Qg5+ 27.Kf2 Rxe5 0-1
2024.09.21 Dutch League 2024-25
366083 IM Ondersteijn, N (2347) FM Elgersma, Onno (2320) 1-0
1.c4 Nf6 2.g3 c5 3.Bg2 d5 4.cxd5 Nxd5 5.Nc3 Nc7 6.Nf3 Nc6 7.a3 g6 8.O-O Bg7 9.d3 O-O 10.Be3 Ne6 11.Rc1 Bd7 12.Nd2 Rc8 13.Nde4 b6 14.Ng5 Ncd4 15.Nxe6 Bxe6 16.Bxd4 Qxd4 17.Bb7 Rb8 18.Bc6 Rfc8 19.Bb5 h5 20.Qa4 Qxa4 21.Nxa4 h4 22.Nc3 Rd8 23.Rfd1 Rbc8 24.Kf1 Bf6 25.Bc4 Bh3+ 26.Ke1 Kg7 27.a4 Bd7 28.Bb5 Bf5 29.Ra1 Rd4 30.Bc4 a5 31.Ra3 hxg3 32.hxg3 Rh8 33.Nd5 Rh1+ 34.Kd2 Rh2 35.Rb3 Rxf2 36.Nxf6 Kxf6 37.Rxb6+ e6 38.Ra6 Rg4 39.Rg1 Rg5 40.Rxa5 Bg4 41.d4 Rh5 42.Rxc5 Rhh2 43.Re5 Rh8 44.a5 Rb8 45.b3 Ke7 46.a6 Ra8 47.b4 Kd6 48.b5 Rh2 49.b6 f6 50.b7 Rb8 51.Rb5 Bf3 52.a7 1-0
2024.08.16 Bruges Masters Open 2024
409800 Patil, Harshal (2130) FM Elgersma, Onno (2323) 1-0
1.Nf3 d5 2.c4 e6 3.e3 Nf6 4.Nc3 a6 5.b3 Bd6 6.Bb2 b6 7.Qc2 Bb7 8.d4 Nbd7 9.Bd3 Qe7 10.O-O dxc4 11.Bxc4 O-O 12.e4 e5 13.Nd5 Nxd5 14.Bxd5 Bxd5 15.dxe5 Nxe5 16.Nxe5 Bb7 17.Nc6 Qe6 18.Qc3 Qh6 19.g3 Rfe8 20.Rfe1 Bc5 21.Ne5 Rad8 22.Nd3 Bd6 23.e5 Bf8 24.Qxc7 Ba8 25.e6 fxe6 26.Re3 Rd5 27.Nf4 Rd2 28.Bc3 Rc2 29.Qd7 e5 30.Qxe8 exf4 31.Bb4 Qf6 32.Bxf8 Qxa1+ 33.Re1 Qxe1+ 34.Qxe1 Kxf8 35.Qd1 Be4 36.Qd6+ Kg8 37.Qb8+ Kf7 38.Qxf4+ Kg8 39.Qxe4 Rc1+ 40.Kg2 h6 41.Qa8+ Kh7 42.Qxa6 Rc6 43.Qd3+ Kh8 44.a4 Rf6 45.b4 Kg8 46.a5 bxa5 47.bxa5 h5 48.Qd5+ Kh7 49.Qxh5+ Kg8 50.Qb5 1-0
2024.08.15 Bruges Masters Open 2024
409791 FM Elgersma, Onno (2323) Thakoerdien, Jerrel (2162) 1-0
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.d3 b5 7.Bb3 O-O 8.Nc3 d6 9.a3 Na5 10.Ba2 c5 11.b4 Nc6 12.Nd5 Be6 13.c3 Rc8 14.Be3 Re8 15.bxc5 dxc5 16.Nxf6+ gxf6 17.Nh4 Kh8 18.Nf5 c4 19.d4 Bxf5 20.exf5 exd4 21.cxd4 Qd5 22.Bb1 Rcd8 23.Qh5 Rg8 24.f3 Nxd4 25.Be4 Qe5 26.Rae1 Bxa3 27.Kh1 Bb4 28.Rd1 Bc5 29.Bh6 Qe7 30.Bb1 Rde8 31.Qh4 c3 32.Rfe1 Qd6 33.Re6 Rxe6 34.fxe6 Qxe6 35.Bg5 Kg7 36.Qh6+ 1-0
2024.08.14 Bruges Masters Open 2024
409778 Nemegeer, Arne (2222) FM Elgersma, Onno (2323) 1/2-1/2
1.e4 e6 2.d4 d5 3.e5 c5 4.c3 Nc6 5.Nf3 Bd7 6.Be2 Nge7 7.Na3 Nf5 8.Nc2 cxd4 9.cxd4 Be7 10.O-O O-O 11.Bd3 f6 12.Bf4 g5 13.exf6 Bxf6 14.Be5 g4 15.Bxf6 Qxf6 16.Ne5 Nxe5 17.dxe5 Qg7 18.Re1 Nh4 19.Nd4 Rf4 20.Bf1 Raf8 21.Qd2 Ng6 22.g3 Rxf2 23.Qg5 Rxb2 24.Qxg4 Qf7 25.Re2 Rb4 26.Rd2 Kh8 27.Qe2 Qg7 28.Re1 Nh4 29.Bg2 Nxg2 30.Kxg2 Qg5 31.h4 Qg6 32.Qe3 Rc4 33.Rf2 Rg8 34.Rf4 b5 35.Qf3 b4 36.g4 Rc3 37.Re3 Rxe3 38.Qxe3 a5 39.g5 a4 40.Qe1 b3 41.axb3 a3 42.Qb4 a2 43.Qa3 Qb1 44.Qe7 Qg6 45.Qa3 Qb1 46.Qe7 Qg6 1/2-1/2
2024.08.13 Bruges Masters Open 2024
409752 FM Elgersma, Onno (2323) Ruzhansky, Elias (2211) 1-0
1.e4 e5 2.Nf3 Nf6 3.Nxe5 d6 4.Nf3 Nxe4 5.Nc3 Nxc3 6.dxc3 Be7 7.Be3 O-O 8.Qd2 Nd7 9.O-O-O Nc5 10.h4 Qe8 11.Re1 Ne4 12.Qd5 Nf6 13.Qd1 Qa4 14.Bg5 Be6 15.a3 c5 16.Bd3 Rfe8 17.Bxf6 Bxf6 18.Ng5 Bxg5+ 19.hxg5 Qf4+ 20.Qd2 Qxd2+ 21.Kxd2 g6 22.Rh2 Kg7 23.Reh1 Rh8 24.Rh4 Bd5 25.R1h2 Raf8 26.c4 Bc6 27.g4 f6 28.gxf6+ Rxf6 29.g5 Rf7 30.Rh6 Rff8 31.b4 Bd7 32.Be4 Bc6 33.Bd3 Bd7 34.f4 Bf5 35.Be2 Be4 36.R6h4 Rf7 37.c3 b6 38.Bd1 Bf5 39.Bf3 Be6 40.Bh1 Rc7 41.b5 Rf7 42.Bc6 Bd7 43.Bd5 Re7 44.a4 Be6 45.Bf3 Bc8 46.Rh6 Rf7 47.Be4 Bf5 48.Bd5 Re7 49.Rh1 Be4 50.Bxe4 Rxe4 51.f5 gxf5 52.g6 Re6 53.Rxh7+ Rxh7 54.Rxh7+ Kxg6 55.Rxa7 f4 56.a5 bxa5 57.Rxa5 Kf5 58.Ra7 Ke5 59.Rf7 Re8 60.Kd3 Ra8 61.Re7+ Kf6 62.Rd7 Ke5 63.Rh7 Ra1 64.Rh5+ Ke6 65.Ke4 Rc1 66.Rh6+ Kd7 67.Rh7+ Ke6 68.Rh6+ Kd7 69.Rh3 Rf1 70.Rf3 Re1+ 71.Kxf4 d5 72.cxd5 Kd6 73.Rd3 Rb1 74.Ke4 Rxb5 75.Rh3 Rb1 76.Rh6+ Kd7 77.Kd3 Rd1+ 78.Kc4 Rc1 79.Rc6 Rh1 80.Kxc5 Rc1 81.c4 Ra1 82.Rh6 Ra5+ 83.Kd4 Ra4 84.Rh7+ Kd8 85.d6 Ra1 86.Kd5 Rc1 87.c5 Ra1 88.Rh8+ 1-0
2024.08.13 Bruges Masters Open 2024
409763 FM Elgersma, Onno (2323) GM Sanal, V (2570) 0-1
1.e4 d6 2.d4 Nf6 3.Nc3 e5 4.Nf3 Nbd7 5.Bc4 Be7 6.O-O O-O 7.Re1 c6 8.a4 h6 9.h3 Re8 10.Be3 exd4 11.Bxd4 Nf8 12.e5 dxe5 13.Bxe5 Be6 14.Bxe6 Nxe6 15.Qe2 Qa5 16.Qc4 Rad8 17.Ne4 Nxe4 18.Rxe4 Qd5 19.Qxd5 Rxd5 20.Bc3 Red8 21.Rae1 Bd6 22.Kf1 Bc7 23.R4e2 a6 24.Ne5 Nd4 25.Bxd4 Rxd4 26.b3 Ba5 27.Nf3 Bxe1 28.Nxd4 Bc3 29.Nf3 Rd1+ 30.Ne1 Rc1 31.Re3 Bb4 32.Re8+ Kh7 33.Re4 a5 34.h4 f5 35.Re5 Kg6 36.f4 Kh5 37.Rxf5+ Kxh4 38.Re5 Kg3 0-1
2024.08.12 Bruges Masters Open 2024
409740 Van Volsem, Merlijn (2205) FM Elgersma, Onno (2323) 1/2-1/2
1.Nf3 Nf6 2.g3 c5 3.Bg2 Nc6 4.d4 cxd4 5.Nxd4 e5 6.Nxc6 dxc6 7.Nd2 Bc5 8.O-O O-O 9.a4 a5 10.Nc4 Qe7 11.Bd2 e4 12.Be3 Be6 13.Bxc5 Qxc5 14.Ne3 Rad8 15.Qc1 Qh5 16.f3 exf3 17.exf3 Rd4 18.Qe1 Rfd8 19.Qc3 h6 20.Rad1 Rxd1 21.Rxd1 Rxd1+ 22.Nxd1 Qd5 23.Ne3 Qd8 24.Bf1 Bd5 25.Qd4 Qe7 26.Kf2 Be6 27.Qb6 Nd5 28.Nxd5 Bxd5 29.Be2 1/2-1/2
2024.08.11 Bruges Masters Open 2024
418963 De Block, Fabio (2048) FM Elgersma, Onno (2323) 0-1
1.d4 e6 2.c4 Nf6 3.Nc3 d5 4.cxd5 exd5 5.Bg5 c6 6.e3 h6 7.Bh4 Be7 8.Bd3 O-O 9.Qc2 Re8 10.Nge2 Nbd7 11.O-O a5 12.a3 Nf8 13.Rab1 Ne6 14.b4 Ng5 15.f3 axb4 16.axb4 Bd6 17.Bf2 Qe7 18.h4 Ne6 19.e4 dxe4 20.fxe4 Bxb4 21.e5 Ng4 22.Ne4 Rd8 23.Qb3 Ra3 24.Qxb4 Qxb4 25.Rxb4 Rxd3 26.Nd6 Rd2 27.Re1 c5 28.dxc5 Nxf2 29.Kxf2 Nxc5 30.Ke3 Rd3+ 31.Kf2 R3xd6 0-1
2024.08.11 Bruges Masters Open 2024
418975 FM Elgersma, Onno (2323) De Heug, Andrea (2147) 1-0
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.d3 b5 7.Bb3 d6 8.Bd2 O-O 9.h3 Be6 10.Nc3 Bxb3 11.axb3 d5 12.exd5 Nxd5 13.Re1 b4 14.Nxd5 Qxd5 15.Qe2 Bc5 16.Qe4 Qd6 17.Qc4 Bb6 18.Re4 a5 19.Rae1 Rae8 20.Bf4 Qf6 21.Bxe5 Nxe5 22.Rxe5 Rxe5 23.Rxe5 Rd8 24.Qe4 g6 25.Re8+ Rxe8 26.Qxe8+ Kg7 27.Qe5 Qxe5 28.Nxe5 Kf6 29.Nc4 Ke6 30.Kf1 Bd4 31.Ke2 Kd5 32.f3 c5 33.Kd2 Bf6 34.c3 Bd8 35.f4 f5 36.Ne3+ Ke6 37.Nc2 Kd5 38.Ne1 Bc7 39.Ke3 Bd8 40.Nf3 Bf6 41.Kd2 Kd6 42.Ng5 h6 43.Nf3 g5 44.fxg5 hxg5 45.g4 fxg4 46.hxg4 Kd5 47.Kc2 Bd8 48.c4+ Kd6 49.d4 cxd4 50.Nxd4 Bf6 51.Nf3 Kc5 52.Kd3 Kc6 53.Ke4 Kc5 54.Ne1 Kd6 55.Nd3 Ke6 56.Ke3 Kd6 57.Kf3 Ke7 58.Ke4 Ke6 59.Nc5+ Kd6 60.Kf5 Bxb2 61.Nd3 Bc3 62.Kxg5 a4 63.bxa4 b3 64.Kh6 b2 65.Nxb2 Bxb2 66.g5 Bc1 67.Kh5 Ke6 68.g6 Kf6 69.c5 Kg7 70.c6 Bf4 71.a5 1-0
2024.08.10 Bruges Masters Open 2024
418952 FM Elgersma, Onno (2323) Legein, Youri 1-0
1.e4 d5 2.exd5 Qxd5 3.Nc3 Qa5 4.d4 c6 5.Nf3 Bf5 6.Bc4 e6 7.Ne5 Nf6 8.g4 Bg6 9.h4 Ne4 10.Bd2 Bb4 11.Rh3 Bxc3 12.Bxc3 Nxc3 13.Rxc3 Nd7 14.Nxd7 Kxd7 15.Qe2 h5 16.O-O-O Rad8 17.Ra3 Qc7 18.Rxa7 Qf4+ 19.Kb1 Kc7 20.Ba6 Rb8 21.d5 Qe4 22.dxc6 Qxe2 23.Bxe2 Kxc6 24.g5 Kb6 25.Ra4 Rhd8 26.Rb4+ Kc7 27.Rc4+ Kb6 28.Kc1 Rxd1+ 29.Bxd1 Rd8 30.Bf3 Rd7 31.a4 Ka5 32.b3 f6 33.gxf6 gxf6 34.Bxh5 Bxh5 35.Rc5+ Kb4 36.Rxh5 e5 37.Rf5 e4 38.Kb2 1-0
2024.07.18 Science Park Open A 2024
452887 FM Elgersma, Onno (2348) FM Wunnink, M (2154) 1/2-1/2
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bg5 e6 7.Qd2 a6 8.O-O-O Be7 9.Kb1 Nxd4 10.Qxd4 h6 11.Be3 Qc7 12.f3 b5 13.Qd2 Bb7 14.h4 Rc8 15.Bd3 Nd7 16.Ne2 Ne5 17.Nd4 d5 18.exd5 Bxd5 19.Bf4 Nc4 1/2-1/2
2024.07.17 Science Park Open A 2024
452873 FM Elgersma, Onno (2348) Duson, Robin (2148) 1/2-1/2
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.Nc3 Be7 6.d3 b5 7.Bb3 d6 8.a3 Na5 9.Ba2 c5 10.b4 Nc6 11.Nd5 Be6 12.c3 Rc8 13.O-O O-O 14.Be3 cxb4 15.Nxf6+ Bxf6 16.Bxe6 fxe6 17.axb4 Ra8 18.Ra2 a5 19.bxa5 Nxa5 20.Qc2 Rb8 21.Rfa1 Nc6 22.Qb3 Qd7 23.Ra6 Rfc8 24.h3 h6 25.d4 d5 26.dxe5 Nxe5 27.Nxe5 Bxe5 28.Bd4 Bxd4 29.cxd4 b4 30.Ra7 Rb7 31.Ra8 dxe4 32.d5 Rxa8 33.Rxa8+ Kh7 34.dxe6 Qd3 35.e7 Qxb3 36.e8=Q Qd1+ 37.Kh2 Qd6+ 38.g3 Re7 39.Qg8+ Kg6 40.Qc4 Kh7 41.Qg8+ Kg6 42.Qc4 Re6 43.h4 Qc6 44.Qxc6 Rxc6 45.Rb8 Rc2 46.Rxb4 Rxf2+ 47.Kg1 Re2 48.Kf1 Re3 49.Kf2 Rf3+ 50.Kg2 Kf5 51.Rb7 g6 52.Re7 Ra3 53.Re8 Ra2+ 54.Kh3 Ra6 55.Kg2 Re6 56.Rf8+ Ke5 57.Ra8 Rc6 58.Kf2 Rc2+ 59.Ke3 Rc3+ 60.Kf2 Rf3+ 61.Kg2 Rf6 62.Ra5+ Kd4 63.Ra4+ Kd3 64.Ra3+ Kc2 65.Ra2+ Kc3 66.Ra3+ Kb4 67.Re3 Re6 68.Kf2 Kc4 69.Ra3 Rd6 70.Ra4+ Kd3 71.Ra3+ Kd4 72.Ra4+ Ke5 73.Ra8 Re6 74.Ra5+ Kf6 75.Ke3 h5 76.g4 hxg4 77.Rg5 Kg7 78.Rxg4 Kh6 79.Rg5 Ra6 80.Kxe4 Ra4+ 81.Kf3 Rxh4 82.Ra5 Rb4 83.Kg3 g5 84.Ra8 Kh5 85.Rh8+ Kg6 86.Rg8+ Kh5 87.Rh8+ 1/2-1/2
2024.07.16 Science Park Open A 2024
452860 Kanis, Sierk (2105) FM Elgersma, Onno (2348) 1/2-1/2
1.d4 e6 2.Nf3 Nf6 3.Bf4 d5 4.e3 c5 5.c3 Nc6 6.Nbd2 Nh5 7.Bg3 g6 8.Be2 Qb6 9.Qb3 Nxg3 10.hxg3 Bg7 11.Qa3 Bf8 12.Qb3 Bd7 13.O-O Rc8 14.Rfe1 Be7 15.Rad1 O-O 16.dxc5 Bxc5 17.Qxb6 Bxb6 18.e4 Rcd8 19.exd5 exd5 20.Nb3 Bf5 21.Nfd4 Bc8 22.Bf3 Kg7 23.Rd2 h5 24.Nc2 Be6 25.Red1 Rfe8 26.Kf1 Ne5 27.Nb4 h4 28.gxh4 Rh8 29.Nxd5 Nc4 30.Re2 Rxh4 31.g3 Rh2 32.Kg1 Rh3 33.Kg2 Rdh8 34.Nxb6 axb6 35.Nd4 Rh2+ 36.Kg1 Bg4 37.Rde1 f5 38.Re7+ Kf6 39.R1e6+ Kg5 40.Rg7 R2h6 41.Bxb7 Nxb2 42.f4+ Kh5 43.Kg2 Nd3 44.Re3 R6h7 45.Rxh7+ Rxh7 46.Bf3 Nc5 47.Re1 Kh6 48.Bxg4 fxg4 49.Rh1+ Kg7 50.Rxh7+ Kxh7 51.f5 Ne4 52.c4 Nd6 53.f6 Nxc4 54.Ne6 Kg8 55.Ng5 Ne3+ 56.Kf2 Nd5 57.f7+ Kg7 58.a3 b5 59.Ne4 b4 60.axb4 Nxb4 61.Ng5 Nc6 62.Ke3 Ne5 63.Kf4 Nxf7 64.Kxg4 1/2-1/2
2024.07.15 Science Park Open A 2024
464573 CM Dimitrijeski, K (2158) FM Elgersma, Onno (2348) 1/2-1/2
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.cxd5 exd5 5.Bg5 c6 6.e3 h6 7.Bh4 Be7 8.Bd3 O-O 9.Qc2 Re8 10.Nf3 Be6 11.O-O Nbd7 12.Rab1 a6 13.b4 b5 14.a4 Nb6 15.Ne5 Rc8 16.a5 Nc4 17.Nxc4 dxc4 18.Bf5 Qd7 19.Bxe6 Qxe6 20.Bxf6 Bxf6 21.Rfd1 Rcd8 22.Ne2 g6 23.Nf4 Qe4 24.Qxe4 Rxe4 25.Ne2 h5 26.Nc3 Ree8 27.g3 g5 28.h3 Kg7 29.Kg2 Kg6 30.Ne2 Bg7 31.Rh1 Bf8 32.Rhd1 Rd7 33.Nc3 Bg7 34.Ne2 Bh6 35.Rh1 Re4 36.Nc3 Re6 37.Ne2 f6 38.Rhg1 Bf8 39.Rh1 Rh7 40.h4 Bd6 41.Kf3 Bb8 42.Kg2 Re8 43.Kf3 Rg7 44.Kg2 Kh6 45.Kf3 Ree7 46.Nc3 Bd6 47.Ne2 Kg6 48.Nc3 Rh7 49.Ne2 Ref7 50.Kg2 Rh8 51.Kf3 Kf5 52.Nc3 Re7 53.Rb2 Kg6 54.Rbb1 Bc7 55.Ne2 1/2-1/2
2024.07.14 Science Park Open A 2024
464563 FM Elgersma, Onno (2348) Groenewoud, Joel (2095) 1-0
1.e4 c6 2.d4 d5 3.Nd2 dxe4 4.Nxe4 Nf6 5.Nxf6+ exf6 6.c3 Bd6 7.Bd3 O-O 8.Ne2 Re8 9.Qc2 h5 10.O-O h4 11.Bf4 h3 12.Rfe1 hxg2 13.Qd2 Be6 14.Bxd6 Qxd6 15.Ng3 Nd7 16.Ne4 Qd5 17.Qf4 Rad8 18.Re3 Qh5 19.Rg3 Kh8 20.Nd6 Rf8 21.Nf5 g6 22.Re1 Rfe8 23.Nd6 g5 24.Qe4 Rg8 25.Qxg2 g4 26.Nxb7 Rb8 27.Nd6 f5 28.Rge3 f4 29.Rxe6 fxe6 30.Rxe6 f3 31.Qg3 Rg7 32.Qf4 Rh7 33.Bxh7 Rf8 34.Qh6 Qxh6 35.Rxh6 Kg7 36.Nf5+ 1-0
2024.07.06 17th Paracin Open A 2024
465356 Zhong, Kangmin (2010) FM Elgersma, Onno (2348) 1/2-1/2
1.d4 Nf6 2.c4 e6 3.Nc3 d5 4.cxd5 exd5 5.Bg5 c6 6.e3 h6 7.Bh4 Be7 8.Bd3 O-O 9.Bg3 Re8 10.Nf3 Bg4 11.h3 Bxf3 12.Qxf3 c5 13.O-O Nc6 14.dxc5 Bxc5 15.Rad1 Ne5 16.Qe2 Qe7 17.Bb1 Rad8 18.Qc2 d4 19.exd4 Bxd4 20.Ne4 Ng6 21.Nxf6+ Qxf6 22.Rd3 Qe6 23.Rfd1 Rc8 24.Qd2 Bb6 25.Rd6 Qe2 26.Bxg6 fxg6 27.Rxg6 Qxd2 28.Rxd2 Rc1+ 29.Kh2 Kh7 30.Rg4 Ree1 31.Bf4 Rcd1 32.Rxd1 Rxd1 33.Be3 Bxe3 34.fxe3 Re1 35.Rb4 Rxe3 36.Rxb7 Re2 37.Kg3 a5 38.a4 1/2-1/2
2024.07.06 17th Paracin Open A 2024
465396 FM Elgersma, Onno (2348) Alok, Sinha (2245) 1/2-1/2
1.d4 Nf6 2.Nf3 e6 3.c4 d5 4.g3 dxc4 5.Bg2 c5 6.O-O Nc6 7.Qa4 Bd7 8.Qxc4 b5 9.Qd3 c4 10.Qd1 Rc8 11.Re1 Bb4 12.Bd2 Bxd2 13.Nbxd2 Qb6 14.e3 O-O 15.a4 a6 16.Qb1 Rfd8 17.Rc1 Nb4 18.Ne5 Be8 19.Ndf3 h6 20.axb5 axb5 21.Rc3 Nbd5 22.Rca3 b4 23.Ra6 Qb8 24.e4 Nc7 25.Rc6 Nb5 26.Rxc4 Rxc4 27.Nxc4 Nxd4 28.Nxd4 Rxd4 29.e5 Rxc4 30.exf6 Rc8 31.fxg7 Qe5 1/2-1/2
2024.07.05 17th Paracin Open A 2024
465322 FM Elgersma, Onno (2348) Sahbudak, Baris Cinar (2073) 1-0
1.Nf3 g6 2.c4 c5 3.d4 cxd4 4.Nxd4 Bg7 5.Nc3 Nc6 6.Nc2 d6 7.e4 Nf6 8.Be2 O-O 9.O-O Be6 10.Be3 Rc8 11.Rc1 Nd7 12.Qd2 Nc5 13.f3 Qa5 14.Na3 a6 15.Rfd1 Na4 16.Nab1 Rfe8 17.Nxa4 Qxa4 18.b3 Qb4 19.Nc3 Qa3 20.Bf1 h5 21.h3 Kh7 22.f4 Nb4 23.Nb1 Qa5 24.a3 Nc6 25.Qf2 Qc7 26.Nd2 f6 27.Bb6 Qd7 28.Nf3 Bh6 29.Qh4 Nd8 30.e5 Bf5 31.exf6 exf6 32.Qxf6 Bxf4 33.Rc3 Qe7 34.Qxe7+ Rxe7 35.g3 Bh6 36.Rxd6 Nf7 37.Rd1 Bg7 38.Re3 Rxe3 39.Bxe3 Re8 40.Bf2 g5 41.Bg2 g4 42.hxg4 hxg4 43.Nh4 Bc8 44.Re1 Ne5 45.Be4+ Kg8 46.Kg2 Bf6 47.Bd4 Kg7 48.Bb1 Bd7 49.Nf5+ Kf8 50.Kf1 Nf3 51.Rxe8+ Bxe8 52.Bxf6 Nd2+ 53.Ke2 Nxb1 54.Bb2 b5 55.Nd6 bxc4 56.Nxe8 c3 57.Bc1 Kxe8 58.Kd3 Nd2 59.Bxd2 cxd2 60.Kxd2 1-0
2024.07.04 17th Paracin Open A 2024
474010 Kisic, Jovan (2096) FM Elgersma, Onno (2348) 0-1
1.c4 c5 2.Nf3 Nf6 3.d3 Nc6 4.g3 d5 5.cxd5 Nxd5 6.Bg2 e5 7.O-O Be7 8.Nc3 Nc7 9.b3 O-O 10.Bb2 Be6 11.Rc1 f6 12.Nd2 Qd7 13.Na4 Na6 14.Ba3 Ncb4 15.Bxb4 cxb4 16.Nf3 Rac8 17.Qd2 b5 18.Nb2 Nc7 19.Ne1 Nd5 20.Bxd5 Bxd5 21.Nc2 a5 22.d4 Bb7 23.d5 Qxd5 24.Qxd5+ Bxd5 25.Ne3 Be6 26.Rxc8 Rxc8 27.Rd1 Kf7 28.Kf1 Bc5 29.Rc1 Bxe3 30.Rxc8 Bxc8 31.fxe3 Ke7 32.Ke1 Kd6 33.Kd2 Bb7 0-1
2024.07.03 17th Paracin Open A 2024
473940 FM Elgersma, Onno (2348) Vasilkov, Nikolay (2066) 0-1
1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.a3 Be7 7.Be3 O-O 8.Be2 d6 9.Qd2 Nxd4 10.Bxd4 e5 11.Be3 Be6 12.O-O-O a6 13.f3 Rc8 14.g4 Qc7 15.g5 Nh5 16.Kb1 f5 17.Nd5 Bxd5 18.Qxd5+ Kh8 19.Bd3 f4 0-1
2024.06.30 Silver Lake Open A 2024
484405 FM Elgersma, Onno (2348) FM Afanasiev, Va (2200) 1-0
1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.Nf3 Bg7 5.Be2 O-O 6.O-O a6 7.Re1 Nc6 8.d5 Na7 9.e5 dxe5 10.Nxe5 Nb5 11.Nxb5 axb5 12.Bf3 Ra6 13.Qd3 Rd6 14.Qxb5 Nxd5 15.Nc4 c6 16.Qb3 Re6 17.Bd2 b5 18.Na5 Rd6 19.Rad1 Qb6 20.c4 Nc7 21.c5 Qxc5 22.Bb4 Rxd1 23.Rxd1 Qg5 24.Nxc6 Bf6 25.Bd2 Qh4 26.Re1 Be6 27.Qe3 Re8 28.Qb6 Rc8 29.Qb7 Bf5 30.g3 Qc4 31.Bh6 Be6 32.Rc1 Qxa2 33.Na7 Ra8 34.Rxc7 Rd8 35.Rc1 Qxb2 36.Qb6 Re8 37.Qxb5 Rb8 38.Qxb2 Rxb2 39.Nc6 Ra2 40.Rd1 1-0
2024.06.29 Silver Lake Open A 2024
484397 Valitov, Ilshat (1865) FM Elgersma, Onno (2348) 0-1
1.b3 Nf6 2.Bb2 g6 3.e3 Bg7 4.d4 O-O 5.Nf3 b6 6.c4 Bb7 7.Nbd2 d6 8.Qc2 Nbd7 9.Be2 Re8 10.h4 e5 11.d5 a5 12.Ng5 c6 13.h5 cxd5 14.hxg6 hxg6 15.Ndf3 Ne4 16.Nxe4 dxe4 17.Nd2 Nc5 18.O-O-O Rc8 19.Kb1 d5 20.f3 Qg5 21.fxe4 dxe4 22.Ba3 Qxg2 23.Bxc5 bxc5 24.Rde1 Rcd8 25.Qc3 Rd6 26.Rhg1 Qf2 27.Rgf1 Qh4 28.Rh1 Qd8 29.Kc2 Qd7 30.Rh2 Rd8 31.Nb1 a4 32.Reh1 Rd3 33.Qe1 axb3+ 34.axb3 Ra8 35.Kb2 Rxe3 36.Qd2 Qxd2+ 37.Nxd2 Rxe2 38.Rxe2 e3 39.Ne4 Bxe4 40.Ra1 Rxa1 41.Kxa1 Bd3 42.Rxe3 e4+ 43.Ka2 Bd4 44.Re1 e3 45.Ka3 e2 46.b4 Bc3 0-1
2024.06.28 Silver Lake Open A 2024
484387 FM Elgersma, Onno (2348) Bhattacharyya Soham (2477) 1/2-1/2
1.e4 c6 2.d4 d5 3.e5 Bf5 4.Nf3 e6 5.Be2 Nd7 6.O-O Ne7 7.c3 h6 8.a4 c5 9.dxc5 Nxc5 10.Nd4 Bg6 11.a5 a6 12.Be3 Qc7 13.f4 Nf5 14.Nxf5 Bxf5 15.Bd4 Be7 16.Nd2 O-O 17.b4 Ne4 18.g4 Nxd2 19.Qxd2 Be4 20.Bf3 Bxf3 21.Rxf3 f5 22.h3 Rf7 23.Qg2 Raf8 24.Kh1 Kh8 25.Rg1 g5 26.gxf5 Rxf5 27.Qg4 Qd7 28.Qh5 Kh7 29.fxg5 Rxf3 30.Qxh6+ Kg8 31.Qg6+ Kh8 32.Qh5+ Kg7 33.Qh6+ Kg8 34.Qg6+ Kh8 35.Qh5+ Kg7 36.Qh6+ 1/2-1/2
2024.06.27 Silver Lake Open A 2024
484378 FM Elgersma, Onno (2348) WFM Khuslen, Erdenebayar (2004) 0-1
1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 5.Nc3 a6 6.Be2 Qc7 7.Nxc6 bxc6 8.Qd3 Nf6 9.Qg3 Qxg3 10.hxg3 d5 11.g4 Bb4 12.Bd2 Bb7 13.O-O-O O-O-O 14.Rh4 h6 15.a3 Be7 16.exd5 cxd5 17.g5 Nd7 18.Ra4 hxg5 19.Bxa6 Nb6 20.Bxb7+ Kxb7 21.Rg4 f5 22.Bxg5 fxg4 23.Bxe7 Rc8 24.Re1 Rh2 25.Nb5 Ka6 26.Bd6 Rxg2 27.Nc7+ Kb7 28.Nxe6 Rxf2 29.Nd4 Nc4 30.Bg3 Rg2 31.Bf4 Rf8 32.Bg5 Re8 33.Rd1 g3 34.b3 Ne5 35.Nf5 Rf8 36.Ne3 Re2 37.Rxd5 Ng4 38.Nc4 g2 39.Rd7+ Kc6 40.Rd6+ Kc7 41.Rd1 Rf1 42.Bd8+ Kb7 43.Bb6 Nf2 44.Bxf2 Rexf2 45.Nd6+ Kc6 46.Nc4 Rxd1+ 47.Kxd1 g1=Q# 0-1
2024.06.26 Silver Lake Open A 2024
484370 FM Albers, Sasa (2309) FM Elgersma, Onno (2348) 1/2-1/2
1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e5 6.Ndb5 d6 7.Bg5 a6 8.Na3 b5 9.Nd5 Be7 10.Bxf6 Bxf6 11.c4 b4 12.Nc2 a5 13.g3 O-O 14.h4 g6 15.h5 Be6 16.Bh3 a4 17.hxg6 hxg6 18.Bxe6 fxe6 19.Ndxb4 Nxb4 20.Nxb4 a3 21.b3 Qb6 22.Nc2 Be7 23.Rh2 Rf7 24.Qg4 Kg7 25.O-O-O Rxf2 26.Rxf2 Qxf2 27.Qxe6 Bg5+ 28.Kb1 Qf3 29.Qd7+ Kh6 30.Qh3+ Kg7 31.Qd7+ Kh6 32.Rxd6 Qc3 33.Qh3+ Kg7 34.Rd7+ Be7 35.Nxa3 Qe1+ 36.Kb2 Qe2+ 37.Nc2 Rxa2+ 38.Kxa2 Qxc2+ 39.Ka1 Qc1+ 40.Ka2 Qc2+ 41.Ka1 Qc1+ 1/2-1/2
2024.06.25 Silver Lake Open A 2024
484362 FM Elgersma, Onno (2348) Slavkovic, Uros (1916) 1-0
1.Nf3 Nf6 2.b3 g6 3.Bb2 Bg7 4.e3 O-O 5.d4 d6 6.Be2 e5 7.dxe5 Ng4 8.Nc3 Nxe5 9.h4 Nbc6 10.Qd2 Ng4 11.h5 Re8 12.hxg6 hxg6 13.Bb5 Bd7 14.O-O-O a6 15.Bxc6 Bxc6 16.Rh3 Nf6 17.Rdh1 b5 18.e4 a5 19.Ng5 a4 20.Qf4 Kf8 21.Rh7 axb3 22.axb3 b4 23.Nd5 Bxd5 24.Rxg7 Re5 25.Rh8+ Kxg7 26.Rxd8 Rxd8 27.Bxe5 dxe5 28.Qxe5 Re8 29.Qxc7 Nxe4 30.Nxe4 Rxe4 31.f3 Re2 32.Kd1 Re8 33.Qd7 Re5 34.Qd6 Rg5 35.Qxb4 Kh6 36.Qd4 Kh7 37.Qf4 Rf5 38.Qe3 Be6 39.Kc1 Ra5 40.Kb2 Rb5 41.Qe2 Rb4 42.Ka3 Rb8 43.c4 Ra8+ 44.Kb2 Rb8 45.g4 Kg8 46.f4 Rb6 47.Qe3 Rb8 48.Qe5 Rd8 49.f5 1-0
2024.06.24 Silver Lake Open A 2024
484355 IM Dvalishvili, P (2366) FM Elgersma, Onno (2348) 0-1
1.e4 e6 2.Qe2 c5 3.Nf3 Nc6 4.g3 e5 5.Bg2 Nf6 6.O-O Be7 7.c3 O-O 8.Na3 Re8 9.d3 h6 10.Nc4 Bf8 11.Ne3 d5 12.exd5 Nxd5 13.Nxd5 Qxd5 14.Nd2 Qd8 15.a3 Bf5 16.Be4 Bh3 17.Rd1 Qd7 18.Nc4 Rad8 19.Ne3 f5 20.Bd5+ Kh8 21.Bf3 f4 22.Nc2 g5 23.Be4 c4 24.Rd2 Bg4 25.f3 Bc5+ 26.Kh1 Bf5 27.dxc4 Qf7 28.g4 Bxe4 29.Qxe4 h5 30.h3 hxg4 31.hxg4 Kg7 32.Kg2 Qf6 33.Nb4 Bxb4 34.axb4 Qh6 35.Rxa7 Nxa7 36.Qxb7+ Kg8 37.Qxa7 e4 38.fxe4 f3+ 39.Kg1 Qh3 0-1
2024.06.24 Silver Lake Open A 2024
491823 FM Elgersma, Onno (2348) IM Granovskiy, A (2151) 1/2-1/2
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 d6 5.O-O Bd7 6.c3 g6 7.d4 Bg7 8.Bg5 Nf6 9.Nbd2 b5 10.dxe5 Nxe5 11.Nxe5 dxe5 12.Bc2 c5 13.Qe2 O-O 14.Rfd1 Qc7 15.Nf1 h6 16.Bh4 Bg4 17.f3 Be6 18.Ne3 Rad8 19.Qf2 Rxd1+ 20.Rxd1 Rd8 21.Rxd8+ Qxd8 22.a3 Bc8 1/2-1/2
2024.06.23 Silver Lake Open A 2024
491819 CM Tisma, I (1963) FM Elgersma, Onno (2348) 0-1
1.Nf3 Nf6 2.c4 e6 3.g3 d5 4.d4 Bb4+ 5.Bd2 a5 6.a3 Be7 7.Bg2 O-O 8.Qc2 Nbd7 9.O-O c6 10.b3 Ne4 11.Bf4 f5 12.Nc3 g5 13.Bc1 Bf6 14.Bb2 Nd6 15.cxd5 exd5 16.Na4 Qe7 17.Nc5 f4 18.Nd3 fxg3 19.hxg3 Ne4 20.a4 Qf7 21.Nde5 Nxe5 22.dxe5 Bg7 23.Nd2 Nxd2 24.Qxd2 Qg6 25.Qe3 g4 26.Rad1 Be6 27.Ba3 Rf7 28.Bd6 h5 29.Qd3 Bf5 30.Qe3 Bh6 31.Qc3 Bg5 32.f4 gxf3 33.exf3 Bd8 34.f4 Bb6+ 35.Kh2 h4 36.g4 Qxg4 37.Qf3 Qg3+ 38.Kh1 Rg7 39.Qxg3 hxg3 40.Bf3 g2+ 41.Bxg2 Rh7+ 42.Bh3 Rxh3+ 43.Kg2 Kf7 0-1
2024.05.20 16th BPB Limburg Open
538866 GM Wirig, A (2453) FM Elgersma, Onno (2327) 1/2-1/2
1.Nf3 Nf6 2.g3 d5 3.Bg2 e6 4.O-O Be7 5.d4 O-O 6.c4 a5 7.Qc2 Nbd7 8.Bg5 dxc4 9.Qxc4 b5 10.Qxb5 Ba6 11.Qc6 Bxe2 12.Re1 Ra6 13.Qc2 Bxf3 14.Bxf3 h6 15.Be3 Nd5 16.Nc3 c6 17.Na4 N7f6 18.Bd2 Qb8 19.a3 Rc8 20.Rac1 Ra7 21.Kg2 Bf8 22.h4 Qb5 23.Be2 Qb7 24.Bf3 Qb5 25.Be2 Qb7 26.Bf3 1/2-1/2
2024.05.20 16th BPB Limburg Open
538874 FM Elgersma, Onno (2327) GM Leenhouts, K (2453) 1/2-1/2
1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 a6 5.Be2 Nf6 6.Qd3 d6 7.c4 Be7 8.Nc3 Nbd7 9.O-O Qc7 10.Qg3 g6 11.Be3 b6 12.Rac1 Bb7 13.f3 O-O 14.b4 Rfe8 15.Rfd1 Rac8 16.Nb3 Qb8 17.a3 Bd8 18.Qf2 Bc7 19.g4 d5 20.f4 dxc4 21.Nd2 b5 22.g5 Nd5 23.exd5 exd5 24.Ba7 Qa8 25.Bd4 Qb8 26.Bg4 Re7 27.Re1 Rce8 28.Bxd7 Rxd7 29.Rxe8+ Qxe8 30.Re1 Re7 31.Rxe7 Qxe7 32.Qe3 Qxe3+ 33.Bxe3 d4 34.Bxd4 Bxf4 35.Nde4 h5 36.gxh6 Bxh6 37.Nc5 Bc8 38.Nd5 Be6 39.Nf6+ Kf8 40.Nxa6 Bc1 41.Nc7 Bxa3 42.Bc3 Ke7 43.Ng8+ Kf8 44.Nxb5 Bxb4 45.Bxb4+ Kxg8 46.Nc7 Bh3 47.Kf2 Kg7 48.Kg3 Bf1 49.Nd5 g5 50.Bc3+ Kg6 51.Ne7+ Kh5 52.Bf6 Bd3 53.Nd5 Be4 54.Ne3 Bd3 55.Nd5 Be4 56.Nb6 Bd3 57.Nd7 Kg6 58.Bc3 f5 59.Nf8+ Kf7 60.Nd7 Kg6 61.Nf8+ Kf7 62.Nd7 Kg6 1/2-1/2
2024.05.19 16th BPB Limburg Open
538857 FM Elgersma, Onno (2327) GM Lagarde, Max (2622) 1/2-1/2
1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.a3 d6 7.Be3 Be7 8.Be2 O-O 9.O-O e5 10.Nb3 Be6 11.Qd3 Na5 12.Nxa5 Qxa5 13.Rfd1 Rfc8 14.Nd5 Bxd5 15.exd5 Qd8 16.c4 Nd7 17.b4 Bg5 18.Rac1 Bxe3 1/2-1/2
2024.05.12 Groninger Combinatie Open
547539 FM Elgersma, Onno (2329) Bakker, Jouke (2106) 1/2-1/2
1.e4 c5 2.Nf3 e6 3.Qe2 Nc6 4.g3 e5 5.Bg2 Nf6 6.O-O Be7 7.Nc3 d6 8.Nd5 Be6 9.Ne1 Nxd5 10.exd5 Nd4 11.Qd1 Bd7 12.a4 Qc8 13.c3 Nf5 14.d3 h6 15.Nc2 Bg5 16.f4 exf4 17.Qe2+ Kf8 18.Bxf4 f6 19.Rae1 Kf7 20.Be4 Bxf4 21.Rxf4 Re8 22.Qh5+ g6 23.Qf3 Qd8 24.Rf1 Kg7 25.Qf2 Ne7 26.Ne3 f5 27.g4 g5 28.Nxf5+ Nxf5 29.Rxf5 Bxf5 30.Qxf5 Rxe4 31.Qf7+ Kh8 32.dxe4 Qe8 33.Qf6+ Kh7 34.Qxd6 Rd8 35.Qf6 Qxe4 36.Qf5+ Qxf5 37.Rxf5 Kg6 38.Re5 Rd6 39.Kg2 Kf6 40.Rf5+ Ke7 41.a5 b6 42.b4 cxb4 43.cxb4 bxa5 44.bxa5 Rd7 45.a6 Rd6 46.Kf3 Rxa6 47.Ke4 Ra4+ 48.Ke5 Rf4 49.Rxf4 gxf4 50.Kxf4 a5 51.Ke4 a4 52.Kd4 a3 53.Kc3 Kd6 54.h4 Kxd5 55.g5 hxg5 56.hxg5 a2 57.Kb2 Ke6 58.g6 Kf6 59.g7 a1=Q+ 60.Kxa1 Kxg7 1/2-1/2
2024.05.12 Groninger Combinatie Open
547549 FM Elgersma, Onno (2329) FM Van Foreest, Machteld (2278) 0-1
1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.a3 Qc7 7.Be3 a6 8.Be2 Be7 9.O-O O-O 10.f4 d6 11.Qe1 Bd7 12.Qg3 Kh8 13.Rae1 Rad8 14.Kh1 Rfe8 15.Bd3 Bf8 16.Qh4 h6 17.Nf3 Be7 18.e5 Nh7 19.Qh5 f5 20.exf6 Nxf6 21.Qg6 Rf8 22.Nh4 d5 23.Qg3 Be8 24.Bf2 d4 25.Ne2 Qa5 26.Ng1 Qd5 27.Ngf3 Kg8 28.Ng6 Bxg6 29.Bxg6 Nh5 30.Bxh5 Qxh5 31.Rxe6 Bd6 32.Qh4 Qxh4 33.Bxh4 Rd7 34.g3 Bc5 35.Kg2 d3 36.c4 d2 37.Rd1 g5 38.fxg5 Rxf3 39.Rg6+ Kf7 40.Rxh6 Rf2+ 41.Kh3 Kg7 42.b4 Be7 43.b5 axb5 44.cxb5 Ne5 45.Re6 Nd3 46.g4 Re2 47.Rxe2 Nf4+ 48.Kg3 Nxe2+ 49.Kf2 Nc3 50.Rxd2 Rxd2+ 51.Kf3 Nxb5 52.Be1 Rxh2 53.a4 Nd4+ 54.Ke4 Re2+ 55.Kxd4 Rxe1 56.Kc4 Re4+ 57.Kb5 Rxg4 0-1
2024.05.11 Groninger Combinatie Open
547515 Boulahfa, H (2071) FM Elgersma, Onno (2329) 0-1
1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.e5 Nfd7 5.f4 c5 6.Nf3 Nc6 7.Be3 Rb8 8.Qd2 Qa5 9.h4 b5 10.dxc5 Bxc5 11.Nd4 Nxd4 12.Bxd4 Bxd4 13.Qxd4 b4 14.Ne2 b3+ 15.Qd2 Qxd2+ 16.Kxd2 bxc2 17.Kxc2 Nc5 18.Rh3 O-O 19.Ra3 Ba6 20.Nc3 Bxf1 21.Rxf1 d4 22.Na4 Na6 23.Kd2 f6 24.Rff3 fxe5 25.fxe5 Rfc8 26.Rad3 Nb4 27.Rxd4 Rc2+ 28.Kd1 Rxg2 29.Rd2 Rg1+ 30.Ke2 Nc6 31.Rd6 Nxe5 32.Rc3 Rg4 33.b3 Rxh4 34.Rxe6 Ng6 35.Rd6 Rh2+ 36.Kd3 Rxa2 37.Rc7 Rxb3+ 38.Nc3 Rf2 39.Kc4 Rb8 40.Ra6 Rf4+ 41.Kc5 Rf5+ 42.Kc4 Ne5+ 43.Kd5 Nd7+ 44.Ke4 Nc5+ 45.Kxf5 Nxa6 46.Rxa7 Nb4 47.Ne4 Rf8+ 48.Kg5 Nd5 49.Nd6 h6+ 50.Kg4 Nf6+ 51.Kh3 Rd8 52.Nf5 Rd3+ 53.Kg2 Rd7 54.Ra6 Kh7 55.Kf3 Rb7 56.Kf4 Rb4+ 57.Kf3 Nd5 58.Ng3 Rf4+ 59.Kg2 Rf6 60.Ra7 Kg6 61.Rb7 Nf4+ 62.Kf3 Nh5+ 0-1
2024.05.11 Groninger Combinatie Open
547525 FM Palchuk, Andrii (2364) FM Elgersma, Onno (2329) 1/2-1/2
1.d4 Nf6 2.Nf3 e6 3.c4 d5 4.g3 Be7 5.Bg2 O-O 6.O-O a5 7.Qc2 Nbd7 8.Nbd2 c5 9.cxd5 exd5 10.dxc5 Nxc5 11.Nb3 Nce4 12.Nbd4 Bg4 13.Be3 Rc8 14.Qd1 Bc5 15.h3 Bh5 16.Nf5 Bxe3 17.Nxe3 Re8 18.g4 Bg6 19.Qd4 Nc5 20.Rfd1 Ne6 21.Qe5 Be4 22.Rac1 Rxc1 23.Rxc1 h6 24.Nf5 Ng5 25.Qf4 Nxf3+ 26.Bxf3 Bxf5 27.Qxf5 Qb6 28.Rc8 Rxc8 29.Qxc8+ Kh7 30.b3 Qc6 31.Qf5+ g6 32.Qe5 Qe6 33.Qd4 b6 34.Kg2 Ne4 35.e3 1/2-1/2
2024.05.10 Groninger Combinatie Open
547492 Grooten, Tommy (2094) FM Elgersma, Onno (2329) 1/2-1/2
1.d4 Nf6 2.c4 e6 3.Nc3 d5 4.cxd5 exd5 5.Nf3 h6 6.Qb3 Be7 7.e4 dxe4 8.Ne5 O-O 9.Bc4 Qe8 10.Ng6 Nc6 11.Nxf8 Bxf8 12.Nd5 Nxd5 13.Bxd5 Nxd4 14.Qc4 Bb4+ 15.Kf1 c5 16.a3 Bd7 17.Qa2 Bb5+ 18.Bc4 Nc2 19.Rb1 e3 20.Bxe3 Nxe3+ 21.fxe3 Bd2 22.a4 Bxc4+ 23.Qxc4 Qxe3 24.Qe2 Qf4+ 25.Qf2 Qc4+ 26.Qe2 Qd4 27.Rd1 Rd8 28.b3 Rd5 29.g4 f5 30.Kg2 Qe4+ 31.Kf2 Rd4 32.Rhf1 Qf4+ 33.Kg2 Qxg4+ 34.Qxg4 Rxg4+ 35.Kh1 Be3 36.Rxf5 Bd4 37.Rd5 a6 38.a5 Kh7 39.b4 Bf6 40.bxc5 Ra4 41.Rb1 Rxa5 42.Rxb7 Ra1+ 43.Kg2 Rc1 44.Ra7 Rc2+ 45.Kg3 Rc3+ 46.Kg4 Kg6 47.Rxa6 h5+ 48.Kf4 h4 49.c6 h3 50.Kg4 Kf7 51.Rd7+ Ke6 52.Rb7 Be5 53.c7+ Kd7 54.c8=Q+ Kxc8 55.Re7 Bc7 56.Rxg7 Rc2 57.Kf5 Kb7 58.Ra3 Kc6 59.Rxh3 Bxh2 60.Rg6+ Kb7 61.Rh7+ Bc7 62.Ke4 Rc1 63.Rg5 Rc2 64.Rb5+ Kc6 65.Rb3 Rc4+ 66.Kd3 Rc1 67.Rc3+ Rxc3+ 68.Kxc3 Be5+ 69.Kc4 Bf4 70.Rg7 Be5 71.Rg6+ Kb7 72.Re6 Bh2 73.Kb5 Bg3 74.Re7+ Ka8 75.Kb6 Bf2+ 76.Ka6 Bg3 77.Re8+ Bb8 78.Rxb8+ Kxb8 1/2-1/2
2024.05.10 Groninger Combinatie Open
547504 FM Elgersma, Onno (2329) Blok, Xaveer (1875) 1-0
1.e4 c5 2.Nf3 d6 3.Nc3 Nc6 4.d4 cxd4 5.Nxd4 Nxd4 6.Qxd4 Nf6 7.Bg5 e5 8.Bb5+ Bd7 9.Qa4 a6 10.Bxd7+ Qxd7 11.Bxf6 Qxa4 12.Nxa4 gxf6 13.Nb6 Rd8 14.Nd5 Be7 15.Ke2 Kd7 16.a4 Ke6 17.Ne3 h5 18.Rhd1 Bf8 19.Rd5 Rc8 20.c3 Rc5 21.Rxc5 dxc5 22.Rd1 Be7 23.Nf5 Rg8 24.g3 c4 25.f3 a5 26.Rd5 b6 27.h4 Bc5 28.Kf1 Rh8 29.Kg2 Rg8 30.Kh3 Rh8 31.g4 hxg4+ 32.fxg4 Rg8 33.h5 Rh8 34.Kg2 Rg8 35.Kf3 Rc8 36.Rd2 Rb8 37.h6 Rh8 38.Rd1 Rb8 39.h7 Rh8 40.Rh1 Kd7 41.Kg2 Ke8 42.Rh6 Kd7 43.Kg3 Kc7 44.Kf3 Kd7 45.Ke2 Kc7 46.Ng3 Bf8 47.Rh1 Kc6 48.Nf1 b5 49.axb5+ Kxb5 50.Ne3 Bg7 51.Kd2 a4 52.Kc2 Kc5 53.Rh3 Kb5 54.Nd5 Kc5 55.Rh1 Kb5 56.Kb1 Kc5 57.Ka2 Kb5 58.Ne3 Kc5 59.Nf5 Bf8 60.Ng3 Kb5 61.Nf1 Kc5 62.Nd2 Kb5 63.Nf3 Kc5 64.Rh3 Kb5 65.g5 Bg7 66.Rh5 Kc6 67.gxf6 Bxf6 68.Rh6 1-0
2024.05.09 Groninger Combinatie Open
547480 FM Elgersma, Onno (2329) FM Clemens, A (2012) 1-0
1.e4 c5 2.Nf3 e6 3.g3 d5 4.exd5 exd5 5.Bg2 Nf6 6.O-O Be7 7.d3 O-O 8.Re1 Nc6 9.Nc3 h6 10.Bf4 d4 11.Nb5 Nd5 12.Bd2 Bg4 13.h3 Be6 14.Na3 Nb6 15.Ne5 Nxe5 16.Rxe5 Qd7 17.Qh5 Bd6 18.Re2 Rfe8 19.Rae1 Bf8 20.b3 Rac8 21.Kh2 Red8 22.Nc4 Bd5 23.Ne5 Qd6 24.Bf4 Qf6 25.h4 Bxg2 26.Kxg2 Nd5 27.Bd2 b6 28.Re4 Rd6 29.a4 Rc7 30.Nc4 Rd8 31.Ne5 Rd6 32.Qe2 Qd8 33.Nc4 Rdd7 34.Re8 Qf6 35.Rxf8+ Kxf8 36.Qe8# 1-0
2024.04.20 Dutch League 2023-24
575569 IM De Rover, YH (2317) FM Elgersma, Onno (2352) 1/2-1/2
1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 dxe4 5.Nxe4 Be7 6.Bxf6 gxf6 7.Nf3 f5 8.Nc3 a6 9.g3 b5 10.Bg2 Bb7 11.O-O O-O 12.Ne5 Bxg2 13.Kxg2 b4 14.Na4 Qd5+ 15.Qf3 Qxf3+ 16.Nxf3 1/2-1/2
2024.04.11 9th Noisiel Open 2024
576852 IM Nguyen, P (2398) FM Elgersma, Onno (2352) 1-0
1.g3 Nf6 2.Bg2 d5 3.Nf3 e6 4.O-O Be7 5.d4 O-O 6.c4 a5 7.Nc3 c6 8.b3 b6 9.Ne5 Ba6 10.Qd3 Nfd7 11.Nf3 Nf6 12.Rd1 Nbd7 13.Bf4 Rc8 14.Rac1 Ba3 15.Rc2 Bb4 16.Nb1 h6 17.h4 a4 18.Nbd2 a3 19.e4 Be7 20.e5 dxc4 21.bxc4 Nd5 22.Qe4 Nb4 23.Rc3 c5 24.d5 Bb7 25.Nb1 b5 26.Bxh6 gxh6 27.Qg4+ Kh8 28.dxe6 Nf6 29.Rxd8 Nxg4 30.Rd7 Bxf3 31.Bxf3 Nxe5 32.Rxe7 Nxc4 33.Bb7 Nxa2 34.Rxc4 bxc4 35.Bxc8 c3 36.Nxa3 Rxc8 37.exf7 Rf8 38.Rc7 Kg7 39.Rxc5 Rxf7 40.Nb5 Rf3 41.Nd4 Rd3 42.Nf5+ Kg6 43.g4 Rd2 44.Rc6+ Kf7 45.Ne3 Nc1 46.Kg2 Ne2 47.h5 Nf4+ 48.Kf3 Nh3 49.Rxc3 Ng5+ 50.Kg2 Rxf2+ 51.Kxf2 Ne4+ 52.Kf3 Nxc3 53.Nf5 Kf6 54.Nxh6 Kg5 55.Nf7+ Kf6 56.Nd6 Nd5 57.Ke4 Nc3+ 58.Kf4 Nd5+ 59.Kg3 Nc3 60.Kh4 Nd5 61.g5+ Kg7 62.Kg4 Ne3+ 63.Kf4 Nd5+ 64.Ke5 Nc7 65.Nf5+ Kf7 66.g6+ Kf8 67.h6 Kg8 68.Ne7+ Kh8 69.g7+ 1-0
2024.04.09 9th Noisiel Open 2024
576816 Keenan, Cathal (2004) FM Elgersma, Onno (2352) 1/2-1/2
1.e4 e6 2.d3 d5 3.Qe2 Nf6 4.Nf3 c5 5.g3 Nc6 6.Bg2 Be7 7.O-O O-O 8.e5 Nd7 9.c4 Nb6 10.b3 a5 11.a4 Bd7 12.Na3 Nb4 13.h4 Bc6 14.Rd1 Qd7 15.h5 h6 16.Bf4 Rfd8 17.Nh2 dxc4 18.dxc4 Nd3 19.Bxc6 Nxf4 20.gxf4 Qxc6 21.Nb5 Rxd1+ 22.Rxd1 Rd8 23.Rxd8+ Bxd8 24.Nf1 f5 25.Qd2 Qd7 26.Qd6 Qxd6 27.Nxd6 Nd7 28.Nxb7 Bb6 29.Nd2 Nb8 30.Nf3 Nc6 31.Kf1 Kh7 32.Nh4 Ne7 33.Nd6 Bd8 34.Ne8 Kg8 35.Ng6 Nxg6 36.hxg6 Kf8 37.Nd6 Ke7 38.Kg2 Bc7 39.Nb7 Bb6 40.Kh3 Kd7 41.Kh4 Bd8+ 42.Kh5 Bb6 43.Nd6 Bc7 44.Nf7 Ke7 45.Nxh6 Bb8 46.Nf7 Bc7 47.Ng5 Kd7 48.Nh7 Bd8 49.Nf6+ Ke7 50.f3 Bc7 51.Nd5+ Kd7 52.Ne3 Bd8 53.Ng4 Ke8 54.Nh6 Kf8 55.Nf7 Be7 56.Nh8 Ke8 57.Nf7 Kf8 1/2-1/2
2024.04.09 9th Noisiel Open 2024
576825 FM Elgersma, Onno (2352) Priansh, Das (2234) 1/2-1/2
1.e4 e6 2.d4 d5 3.Nd2 c5 4.Ngf3 Nc6 5.exd5 exd5 6.Bb5 Bd6 7.O-O Ne7 8.dxc5 Bxc5 9.Nb3 Bd6 10.Bd3 O-O 11.c3 Bf5 12.Bg5 Bg4 13.Re1 Qd7 14.h3 Bh5 15.Bxe7 Bxe7 16.Ne5 Bxd1 17.Nxd7 Rfd8 18.Raxd1 Rxd7 19.Bf5 Rdd8 20.Na5 Bf8 21.Nxb7 Rdb8 22.Bd7 Ne7 23.Na5 Rxb2 24.Nc6 Ng6 25.Rxd5 Rxa2 26.g3 a5 27.h4 Ba3 28.Nxa5 Bb2 29.Nc6 Bxc3 30.Re3 Bf6 31.h5 Nf8 32.Bh3 Rc2 33.Ne7+ Kh8 34.Nf5 h6 35.Rf3 Ra1+ 36.Kh2 Rc3 37.Rxc3 Bxc3 38.Rd8 Bb4 39.Rb8 Bc5 40.Rc8 Ra5 41.Kg2 Kg8 42.Bg4 g6 43.Nh4 Be7 44.hxg6 Bxh4 45.gxf7+ Kxf7 46.gxh4 Ng6 47.Kg3 Ne5 48.Bh5+ Kf6 49.f3 Ra1 50.Rf8+ Kg7 51.Rf5 Ng6 52.Rb5 Ne7 53.Bg4 Rg1+ 54.Kh2 Rc1 55.h5 Kf6 56.Kg3 Rc4 57.Ra5 Rc3 58.Bd7 Rc4 59.Ra6+ Kg5 60.Bg4 Rc6 61.Ra5+ Kf6 62.Kf4 Rc4+ 63.Ke3 Rc3+ 64.Ke4 Rc6 65.Ra8 Rc4+ 66.Kd3 Rc6 67.Rh8 Kg7 68.Rd8 Kf6 69.Kd4 Ra6 70.Kc5 Ra5+ 71.Kc4 Ra4+ 72.Kb5 Ra5+ 73.Kb6 Rd5 74.Ra8 Kg5 75.Kc7 Rd4 76.Ra5+ Rd5 77.Ra6 Rd4 78.Ra5+ Rd5 79.Ra4 Nf5 80.Ra6 Ne3 81.Rg6+ Kh4 82.Kc6 Rg5 83.Rxh6 Nxg4 84.fxg4 Kxg4 85.Rg6 Kxh5 86.Rxg5+ Kxg5 1/2-1/2
2024.04.07 9th Noisiel Open 2024
576790 IM Vlachos, Anatole (2482) FM Elgersma, Onno (2352) 1-0
1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.e5 Nfd7 5.f4 c5 6.Nf3 Nc6 7.Be3 Be7 8.Qd2 O-O 9.dxc5 Qa5 10.Nd4 Bxc5 11.Nb3 Bxe3 12.Qxe3 Qb6 13.Qxb6 Nxb6 14.O-O-O a6 15.g3 Bd7 16.Nc5 Rfc8 17.Nxb7 d4 18.Ne2 d3 19.Nc3 Nb4 20.Bxd3 Nxd3+ 21.cxd3 Nd5 22.Nd6 Nxc3 23.bxc3 Rxc3+ 24.Kb2 Rc5 25.Rc1 Rb8+ 26.Ka1 Rd5 27.Rc7 Bb5 28.Rhc1 h6 29.Rc8+ Rxc8 30.Rxc8+ Kh7 31.Nxf7 Bxd3 32.Nd6 Bg6 33.g4 Rd1+ 34.Kb2 Rd2+ 35.Kc3 Rc2+ 36.Kb3 Rf2 37.Rf8 Bc2+ 38.Kc3 Bd1 39.h3 h5 40.Ne4 hxg4 41.hxg4 Rc2+ 42.Kd3 Rxa2 43.Ng5+ Kg6 44.Nxe6 Bxg4 45.Nd4 Bd7 46.e6 Ba4 47.e7 Ra3+ 48.Ke4 Ra1 49.Nf3 Bc6+ 50.Kd4 Ra4+ 51.Kc5 Bb5 52.Ne5+ Kh7 53.Rb8 Ra5 54.Nc6 1-0
2024.03.31 GRENKE Chess Open 2024
589204 FM Costa, Leonardo (2479) FM Elgersma, Onno (2351) 1-0
1.e4 e6 2.d4 d5 3.e5 c5 4.c3 Nc6 5.Nf3 Qb6 6.a3 c4 7.Nbd2 Na5 8.Rb1 Bd7 9.h4 h6 10.h5 Ne7 11.b4 cxb3 12.Nxb3 Nxb3 13.Nd2 Ba4 14.Nxb3 Nc6 15.Bd3 Na5 16.Bc2 Nxb3 17.Bxb3 Bxb3 18.Rxb3 Qa6 19.Rh3 O-O-O 20.Rf3 Rd7 21.Rb1 Rc7 22.Qb3 Rg8 23.a4 Qc6 24.Qb5 Qxb5 25.axb5 b6 26.Ke2 Kd8 27.Bd2 Ke8 28.Rg3 g5 29.f4 g4 30.f5 exf5 31.Rf1 Be7 32.Rxf5 Bh4 33.Rd3 Rh8 34.Rf1 Ke7 35.Rh1 Bg5 36.Bxg5+ hxg5 37.Kf2 Ke6 38.Kg3 Rc4 39.Kxg4 Ra4 40.Rf3 Ra2 41.Rf6+ Ke7 42.g3 Re2 43.h6 Re4+ 44.Kf5 Re3 45.Rc6 Kd7 46.h7 1-0
2024.03.26 Titled Tue 26th Mar Late
595219 IM Dovzik, J (2225) FM Elgersma, Onno (2351) 0-1
1.b3 b6 2.e4 Bb7 3.Nc3 c5 4.Bb2 e6 5.Nf3 Nc6 6.g3 Nf6 7.d3 Be7 8.Bg2 O-O 9.O-O d6 10.h3 a6 11.Ne2 b5 12.Nd2 Qb6 13.Kh2 d5 14.exd5 exd5 15.Nf4 Nd4 16.c3 Nf5 17.c4 dxc4 18.dxc4 Bxg2 19.Kxg2 Rad8 20.Qc2 Nd4 21.Bxd4 cxd4 22.Rae1 Bb4 23.Re5 Qb7+ 24.Nf3 Bc3 25.Qd3 bxc4 26.bxc4 Rfe8 27.Nd5 Nxd5 28.cxd5 Rxe5 29.Nxe5 Qxd5+ 30.Nf3 Qxa2 31.Rd1 Qd5 0-1
2024.03.26 Titled Tue 26th Mar Early
593286 WCM Novikova, M (1999) FM Elgersma, Onno (2351) 1-0
1.e4 Nc6 2.d4 d6 3.Nf3 Nf6 4.Nc3 g6 5.Bd3 Bg7 6.h3 O-O 7.Be3 e5 8.d5 Ne7 9.O-O Nd7 10.Qd2 Nc5 11.Bh6 f5 12.Bxg7 Kxg7 13.b4 Nxd3 14.cxd3 fxe4 15.dxe4 Bxh3 16.Ng5 Bd7 17.f4 h6 18.Ne6+ Bxe6 19.dxe6 Nc6 20.Nd5 Qh4 21.b5 Ne7 22.Nxc7 Rad8 23.fxe5 dxe5 24.Qc3 Qxe4 25.Rxf8 Rxf8 26.Re1 Qd4+ 27.Qxd4 exd4 28.b6 axb6 29.Nb5 Rd8 30.Rf1 Rf8 31.Rc1 Nc6 32.Rd1 Kf6 33.Nxd4 Nxd4 34.Rxd4 Kxe6 35.Rb4 Rf7 36.Rxb6+ Kf5 37.Rb5+ Kf6 38.Rb6+ Kg7 39.a4 h5 40.a5 Kh6 41.a6 bxa6 42.Rxa6 Rb7 43.Ra5 Rb2 44.Kh2 Rb1 45.Ra6 Rb5 46.Rc6 h4 47.Rc4 Kh5 48.Rc3 Rb1 49.Rc8 Ra1 50.Rh8+ Kg4 51.Rg8 g5 52.Rb8 Rf1 53.Rb4+ Rf4 54.Rb3 Ra4 55.Rc3 Kh5 56.Rc5 Rf4 57.Rb5 Kg4 58.Rb3 Rd4 59.Ra3 Kf4 60.Rf3+ 1-0
2024.03.26 Titled Tue 26th Mar Late
595420 CM Schut, Ha (2091) FM Elgersma, Onno (2351) 1-0
1.e4 d6 2.d4 Nf6 3.Nc3 Nc6 4.f4 Bg4 5.Nf3 e5 6.fxe5 dxe5 7.d5 Nd4 8.Nb5 Bxf3 9.gxf3 Nxe4 10.fxe4 Qh4+ 11.Kd2 Bb4+ 12.c3 Qf2+ 13.Be2 Nxb5 14.cxb4 Nd4 15.Qf1 Qh4 16.Bd3 O-O-O 17.Kc3 f5 18.exf5 Rxd5 19.Bc4 Rd6 20.Be3 Rc6 21.b5 Nxb5+ 22.Kb3 Nd6 23.Be6+ Kb8 24.Rc1 Ra6 25.a3 Qa4+ 26.Ka2 Nb5 27.Qd3 Re8 28.Rhd1 1-0
2024.03.24 TCh-BEL 2023-24
604740 Groffen, H (2075) FM Elgersma, Onno (2344) 0-1
1.d4 Nf6 2.c4 e6 3.Nf3 Bb4+ 4.Bd2 a5 5.Nc3 O-O 6.a3 Bxc3 7.Bxc3 Ne4 8.Qc2 Nxc3 9.Qxc3 d6 10.e3 Qe7 11.Be2 Nd7 12.O-O a4 13.Rac1 b6 14.Nd2 Bb7 15.Bf3 Bxf3 16.Nxf3 f5 17.Rfe1 Nf6 18.Nd2 Qf7 19.f3 Ra5 20.e4 e5 21.dxe5 Rxe5 22.Qc2 Qe8 23.Qd1 f4 24.Nb1 Qc6 25.Qd4 Nd7 26.Nc3 Nc5 27.Rc2 Nb3 28.Qf2 Nc5 29.Rd1 Rf7 30.Rd5 Qe8 31.Rd1 Qe6 32.Nd5 Qh6 33.Rcd2 Rh5 34.h3 Rg5 35.Kh2 Qh5 36.Nc3 Nd7 37.Rd5 Ne5 38.Nxa4 Rf6 39.Rf1 Rfg6 40.Nc3 c6 41.Rxe5 Rxg2+ 42.Qxg2 Rxg2+ 43.Kxg2 Qxe5 0-1
2024.03.23 Dutch League 2023-24
588081 FM Schoorl, R (2341) FM Elgersma, Onno (2352) 0-1
1.Nf3 d5 2.c4 e6 3.g3 Nf6 4.Bg2 Be7 5.O-O O-O 6.b3 d4 7.e3 c5 8.Ne5 Qc7 9.f4 Nfd7 10.Nd3 Nc6 11.Na3 dxe3 12.dxe3 Bf6 13.Bb2 Rd8 14.Nb5 Qb8 15.Bxf6 Nxf6 16.Qe2 e5 17.Nxc5 Bg4 18.Qf2 a6 19.Nc3 Qa7 20.Nxb7 exf4 21.Nxd8 fxe3 22.Qe1 Rxd8 23.Bxc6 Rd2 24.Rf4 Qc5 25.Bf3 Bxf3 26.Rxf3 Qh5 27.Qxd2 exd2 28.Rd3 Qe5 29.Rd1 h5 30.R1xd2 h4 31.gxh4 Nh5 32.Nd5 Qe1+ 33.Kg2 Qe4+ 34.Kf2 Qxh4+ 35.Ke3 f5 36.Rf2 g6 37.Rd4 Qg5+ 38.Ke2 Qc1 39.Rd2 Qb1 40.Rf3 Qh1 41.c5 Qxh2+ 42.Kd3 Qh1 43.Ke3 Qc1 44.c6 Kf7 45.c7 Nf6 46.Nxf6 Kxf6 47.Ke2 Qxc7 48.Rfd3 Qe5+ 49.Re3 Qb5+ 50.Kd1 Qf1+ 51.Kc2 f4 52.Rd6+ Kf5 53.Rd5+ Kg4 54.Ree5 Qg2+ 55.Kc3 Kh4 56.Rd8 Qxa2 57.Rd4 Qa1+ 58.Kd3 g5 59.Ke4 Qb1+ 60.Rd3 f3 61.Rf5 g4 62.Rf8 f2 63.Rh8+ Kg5 64.Rg8+ Kh5 0-1
2024.03.02 Dutch League 2023-24
618334 Spriestersbach, Kai (2260) FM Elgersma, Onno (2351) 1-0
1.e4 e6 2.d4 d5 3.e5 c5 4.c3 Nc6 5.Nf3 Nge7 6.Na3 cxd4 7.cxd4 Nf5 8.Nc2 Qb6 9.Be2 Nb4 10.Ne3 Nxe3 11.Bxe3 Bd7 12.a3 Nc6 13.b4 a5 14.b5 Ne7 15.a4 Nf5 16.O-O Nxe3 17.fxe3 Be7 18.Bd3 O-O 19.h4 f5 20.exf6 Bxf6 21.Ne5 Be8 22.Qc2 g6 23.Nf3 Qd8 24.Rac1 b6 25.h5 gxh5 26.Bxh7+ Kg7 27.Bd3 h4 28.Ne5 Bxe5 29.dxe5 Ra7 30.Rxf8 Kxf8 31.Qc8 Qxc8 32.Rxc8 Ke7 33.Rb8 Rc7 34.Rxb6 Rc3 35.Bf1 Ra3 36.Rb7+ Kd8 37.Rb8+ Ke7 38.Rb7+ Kd8 39.Rb8+ Ke7 40.b6 Ra1 41.Rb7+ Bd7 42.Kf2 Ra2+ 43.Kf3 Kd8 44.Rb8+ Ke7 45.b7 Bxa4 46.Rh8 Bd1+ 47.Kf4 Ra4+ 48.Kg5 Rg4+ 49.Kh6 Kf7 50.Rh7+ Kg8 51.b8=R# 1-0
2024.02.13 Titled Tue 13th Feb Early
639821 FM Merriman, J (2251) FM Elgersma, Onno (2323) 1-0
1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 d6 5.e4 g6 6.Nge2 Bg7 7.Ng3 exd5 8.cxd5 h5 9.Be2 h4 10.Nf1 Na6 11.Bg5 h3 12.g3 O-O 13.Nd2 Re8 14.O-O Nc7 15.a4 Na6 16.Nc4 Nb4 17.f4 Qd7 18.Bf3 Nh7 19.Bh4 a6 20.Nb6 Bd4+ 21.Kh1 Qc7 22.Nxa8 Qb8 23.Nb6 f5 24.Nxc8 Qxc8 25.Re1 Nf6 26.Bxf6 Bxf6 27.Qd2 Bd4 28.exf5 Rxe1+ 29.Rxe1 Qxf5 30.Be4 Qg4 31.Qe2 Qd7 32.Bxg6 Kg7 33.Bb1 Qf7 34.Qe7 1-0
2024.02.13 Titled Tue 13th Feb Early
641370 FM Yeremyan, Alen (2279) FM Elgersma, Onno (2323) 1-0
1.e4 e6 2.Nc3 d5 3.g3 dxe4 4.Nxe4 Bd7 5.Nf3 Bc6 6.Nc3 Nf6 7.Bg2 Nbd7 8.O-O Be7 9.d4 O-O 10.h3 b6 11.Ne2 Bb7 12.b3 c5 13.Bb2 Rc8 14.c4 cxd4 15.Nexd4 Nc5 16.Qe2 a6 17.Rad1 Qc7 18.Rfe1 Rfe8 19.Bc1 Qb8 20.b4 Nce4 21.Qb2 Rxc4 22.a3 Rec8 23.Bf4 Qa8 24.Ne5 Nc3 25.Nxc4 Nxd1 26.Rxd1 Rxc4 27.Bf1 Rc8 28.Qe2 Nd5 29.Nxe6 fxe6 30.Qxe6+ Kh8 31.Be5 Bf6 32.Bd6 Re8 33.Qf5 Nc3 34.Rd2 Re1 35.Bc7 Qe8 36.Qd3 Ne4 37.Re2 Rxe2 38.Qxe2 Qe7 39.Bxb6 Ng5 40.Qxe7 Bxe7 41.f4 Nf3+ 42.Kf2 Nd2 43.Bd3 Ne4+ 44.Ke3 Nxg3 45.Bd4 Bd6 46.Be5 Bxe5 47.fxe5 Nh5 48.Kd4 g5 49.Kc5 Nf4 50.Bf5 h5 51.Kb6 Bd5 52.Kxa6 Be6 53.Be4 g4 54.hxg4 hxg4 55.b5 g3 56.b6 Bc4+ 57.Ka7 Bd5 58.Bxd5 Nxd5 59.b7 1-0
2024.02.13 Titled Tue 13th Feb Early
640364 CM Carrasco Miranda, A (2234) FM Elgersma, Onno (2323) 0-1
1.c4 g6 2.g3 Bg7 3.Bg2 d6 4.Nc3 Nc6 5.Nf3 Bf5 6.e4 Bg4 7.h3 Bxf3 8.Bxf3 e6 9.h4 h5 10.d3 Nge7 11.Be3 Qd7 12.d4 e5 13.d5 Nd4 14.Bg2 O-O 15.Bh3 f5 16.Bg5 Rae8 17.O-O c5 18.f4 exf4 19.Rxf4 Qc7 20.Bxe7 Qxe7 21.exf5 Qe3+ 22.Kh2 Nxf5 23.Bxf5 Rxf5 24.Rxf5 gxf5 25.Qxh5 Qf2+ 26.Kh3 Re3 27.Qg6 f4 0-1
2024.02.13 Titled Tue 13th Feb Early
640642 FM Elgersma, Onno (2323) CM Levitan, Judah Nathan (2015) 1-0
1.c3 d5 2.Nf3 c5 3.d4 Nc6 4.dxc5 e5 5.b4 a6 6.e3 Bg4 7.Be2 Nf6 8.Bb2 Be7 9.Nbd2 O-O 10.a3 e4 11.Nd4 Bxe2 12.Qxe2 Ne5 13.O-O Nd3 14.Rab1 a5 15.Nf5 Qd7 16.Nxe7+ Qxe7 17.Nb3 Qe5 18.Nd4 Qg5 19.f4 Qg4 20.Qd2 Nd7 21.h3 Qg3 22.Nf5 Qf3 23.gxf3 1-0
2024.02.13 Titled Tue 13th Feb Early
640133 FM Elgersma, Onno (2323) CM Rose, F (2091) 1-0
1.c3 d5 2.Nf3 Nf6 3.d4 e6 4.Bf4 Bd6 5.Bg3 O-O 6.Nbd2 c5 7.e3 b6 8.Ne5 Bb7 9.Bd3 Nc6 10.O-O Qc7 11.f4 Ne7 12.Bh4 Nf5 13.Bxf6 gxf6 14.Bxf5 exf5 15.Qh5 fxe5 16.Qg5+ Kh8 17.Qf6+ Kg8 18.Rf3 exf4 19.Qg5+ Kh8 20.Qf6+ Kg8 21.exf4 Bxf4 22.Raf1 Qd6 23.Qh4 Bxd2 24.Rg3+ Kh8 25.Rxf5 Qe6 26.Re5 Qh6 27.Rh5 Qe3+ 28.Rxe3 Bxe3+ 29.Kh1 h6 30.Qf6+ Kg8 31.Qe7 Ba6 32.Qxe3 Rae8 33.Qg3+ Kh7 34.h3 Rg8 35.Qf4 cxd4 36.Qxh6# 1-0
2024.02.13 Titled Tue 13th Feb Early
640943 FM Elgersma, Onno (2323) CM Szczepanek, R (2205) 1-0
1.c3 e5 2.d4 e4 3.Bf4 d5 4.e3 Bd6 5.Bxd6 Qxd6 6.c4 c6 7.Nc3 Nf6 8.Qb3 O-O 9.Rc1 a6 10.Nge2 b5 11.cxd5 cxd5 12.Nf4 Be6 13.Be2 Nc6 14.O-O Nxd4 15.Qd1 Nf5 16.Qd2 Rad8 17.Rfd1 d4 18.Nxe6 Qxe6 19.exd4 Nxd4 20.Qe3 Nxe2+ 21.Nxe2 Qxa2 22.Nd4 Qxb2 23.Nf5 Rfe8 24.Qg5 Rf8 25.Qxg7# 1-0
2024.02.04 TCh-BEL 2023-24
618412 FM Elgersma, Onno (2344) Battistelli, Fausto (1894) 1-0
1.e4 c5 2.Nf3 d6 3.Nc3 Nf6 4.e5 dxe5 5.Nxe5 Bd7 6.Nxd7 Qxd7 7.g3 Nc6 8.Bg2 g6 9.O-O Bg7 10.d3 Rc8 11.a4 O-O 12.a5 Rfd8 13.Bf4 e6 14.Re1 Nd5 15.Nxd5 exd5 16.c3 Re8 17.Rxe8+ Rxe8 18.a6 b6 19.Qf3 Ne5 20.Qxd5 Qxd5 21.Bxd5 Nxd3 22.Bc7 Re7 23.Bxb6 Nxb2 24.Bb7 axb6 25.a7 Re8 26.Bc6 Rc8 27.Re1 Bxc3 28.Re8+ Rxe8 29.Bxe8 c4 30.a8=Q b5 31.Qd5 1-0
2024.02.03 Dutch League 2023-24
661652 FM Elgersma, Onno (2344) IM Van de Oudeweetering, A (2263) 1-0
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O b5 6.Bb3 Bb7 7.d3 Be7 8.Nc3 O-O 9.Bd2 Nd4 10.Nxe5 Nxb3 11.axb3 b4 12.Nd5 Nxd5 13.exd5 Bxd5 14.Re1 d6 15.Nc4 Bf6 16.Bxb4 Bxc4 17.dxc4 Bxb2 18.Ra2 Qf6 19.Re3 Be5 20.g3 c5 21.Be1 Rfe8 22.Qe2 Kf8 23.c3 Qf5 24.Kg2 Re6 25.Qd1 h5 26.Qd5 Rae8 27.Qf3 Qb1 28.Rxa6 Qxb3 29.Ra7 R6e7 30.Rxe7 Rxe7 31.Qxh5 g6 32.Qh4 Ra7 33.Re2 Qb7+ 34.f3 Qd7 35.Bd2 Kg8 36.Qe4 Ra4 37.f4 Bf6 38.f5 gxf5 39.Qd5 Ra7 40.Kf2 Be5 41.Qd3 Qe6 42.Qc2 Kg7 43.Bf4 Ra8 44.Qd2 f6 45.Qb2 Rh8 46.Qb7+ Kg6 47.h4 Qxc4 48.Bxe5 dxe5 49.Qe7 f4 50.gxf4 Qxf4+ 51.Kg1 Qc1+ 52.Kg2 Rg8 53.Kh2 Qf4+ 54.Kg1 Kf5+ 55.Rg2 Rxg2+ 56.Kxg2 Qd2+ 57.Kf1 Qxc3 58.Qh7+ Kg4 59.Qe4+ 1-0
2023.12.30 59th Groningen Open 2023
697743 FM Elgersma, Onno (2310) FM Van Foreest, Machteld (2344) 0-1
1.e4 c5 2.Nf3 e6 3.g3 Nc6 4.Bg2 Nf6 5.Qe2 e5 6.O-O d6 7.c3 Bg4 8.h3 Bh5 9.Rd1 Rc8 10.Na3 Be7 11.g4 Bg6 12.d4 exd4 13.cxd4 Nxe4 14.d5 Nb4 15.Nh2 Nf6 16.f4 h6 17.f5 Bh7 18.Nb5 a6 19.Nc3 c4 20.Rf1 O-O 21.Be3 Re8 22.Qd2 Nd3 23.h4 b5 24.g5 Nh5 25.Ne4 hxg5 26.hxg5 Qd7 27.Qe2 g6 28.Ng4 Kh8 29.Bd4+ Ne5 30.Bh3 Qb7 31.Nxe5 dxe5 32.Bxe5+ Kg8 33.fxg6 Bxg6 34.Bxc8 Qxd5 35.Bf5 Bc5+ 36.Nxc5 Rxe5 37.Bxg6 Rxg5+ 38.Kh2 Qd6+ 39.Kh1 Ng3+ 0-1
2023.12.29 59th Groningen Open 2023
697710 GM Krasenkow, M (2532) FM Elgersma, Onno (2310) 1/2-1/2
1.d4 Nf6 2.c4 e6 3.Nc3 d5 4.cxd5 exd5 5.Bg5 c6 6.e3 h6 7.Bh4 Be7 8.Bd3 O-O 9.Nge2 Re8 10.Qc2 Nbd7 11.O-O a5 12.f3 b5 13.Rae1 Ba6 14.Bf2 Qb6 15.Bf5 Qb7 16.e4 b4 17.Na4 dxe4 18.fxe4 Nf8 19.e5 Nd5 20.Bd3 Bxd3 21.Qxd3 Qb5 22.Qc2 Ne6 23.b3 Rad8 24.Ng3 Ndf4 25.Rd1 Bg5 26.Rfe1 c5 27.Nxc5 Nxc5 28.Qxc5 Qb7 29.d5 Nxd5 30.Ne4 Nf4 31.Rxd8 Rxd8 32.Qb6 Ne2+ 33.Kf1 Qxe4 34.Rxe2 Rd1+ 35.Be1 Qd3 36.Qxa5 Qf5+ 37.Kg1 Bd2 38.Qd8+ Kh7 39.Qxd2 Rxd2 40.Bxd2 Qc2 41.Kf2 Qxa2 42.Bxb4 Qxb3 43.Be1 Kg6 44.h3 Kf5 45.Kf1 Qd3 46.Kf2 h5 47.Kf1 g5 48.Kf2 g4 49.hxg4+ hxg4 50.Re3 Qc2+ 51.Kf1 Qc4+ 52.Kf2 Qf4+ 53.Ke2 Qh2 54.Kf2 Ke6 55.Re4 Kf5 56.Rb4 Kg5 57.Bd2+ Kf5 58.Be1 Qh4+ 59.g3 Qh2+ 60.Kf1 Kxe5 61.Rf4 f5 62.Bc3+ Ke6 63.Be1 Qh1+ 64.Kf2 Qd5 65.Kg1 Qd3 66.Bf2 Kd5 67.Kg2 Ke5 68.Kg1 Qb1+ 69.Kg2 Qd1 70.Kh2 Ke6 71.Kg2 Qb1 72.Rd4 Qb7+ 73.Kg1 Kf7 74.Rf4 Kg6 75.Rd4 Qf3 76.Rf4 Qd1+ 77.Kg2 Kf6 78.Bd4+ Ke6 79.Bf2 Ke5 80.Kh2 1/2-1/2
2023.12.28 59th Groningen Open 2023
697683 FM Elgersma, Onno (2310) Van Helvoort, R (2098) 1-0
1.e4 e6 2.d4 d5 3.Nd2 dxe4 4.Nxe4 Bd7 5.Nf3 Bc6 6.Bd3 Nd7 7.O-O Ngf6 8.Ng3 Be7 9.Re1 O-O 10.c3 Bxf3 11.Qxf3 c6 12.Bc2 Re8 13.a4 a5 14.Bd2 c5 15.dxc5 Nxc5 16.Rad1 Qd5 17.Qe2 Qc6 18.Qc4 Qb6 19.Bc1 Rac8 20.Qe2 Qc6 21.Rd4 Red8 22.Rh4 g6 23.Bg5 Rd5 24.Qe3 Rxg5 25.Qxg5 Nd5 26.Qh6 Bxh4 27.Qxh4 Qb6 28.Rb1 Qc7 29.Ne2 Nd7 30.Nd4 e5 31.Nf3 Kg7 32.Rd1 N7b6 33.Qe4 Nf6 34.Qxe5 Nc4 35.Qxc7 Rxc7 36.Rb1 Rd7 37.Nd4 Nd5 38.g3 Nb4 39.Rd1 Nxc2 40.Ne6+ Kf6 41.Rxd7 Kxe6 42.Rxb7 Ne1 43.b4 Nd3 44.bxa5 Nxa5 45.Rb5 Nc6 46.a5 Kd6 47.Rb7 Nxa5 48.Rxf7 Nb3 49.Rxh7 Ke5 50.f4+ Kf5 51.Kf1 Ke4 52.Ke2 Ndc1+ 53.Kd1 Nd3 54.Re7+ Kf3 55.Kc2 Nbc5 56.Re8 Nf2 57.Rg8 Ng4 58.Rxg6 Ne4 59.h3 Ne3+ 60.Kd3 Nf2+ 61.Kd4 Nf5+ 62.Ke5 Nxg3 63.Rxg3+ Kxg3 64.f5 Kxh3 65.f6 Ng4+ 66.Ke6 Nh6 67.c4 Kg4 68.c5 Kg5 69.f7 Nxf7 70.Kxf7 Kf5 71.c6 1-0
2023.12.27 59th Groningen Open 2023
697650 FM Toktomushev, Teimur (2249) FM Elgersma, Onno (2310) 1/2-1/2
1.d4 Nf6 2.c4 e6 3.Nf3 Bb4+ 4.Bd2 a5 5.g3 d5 6.Bg2 O-O 7.Qc2 c5 8.cxd5 cxd4 9.Nxd4 Qb6 10.e3 exd5 11.O-O Nc6 12.Nxc6 bxc6 13.Rc1 Be6 14.Qxc6 Bxd2 15.Nxd2 Qxb2 16.Qc3 Rfb8 17.Nb3 Qxc3 18.Rxc3 h5 19.h3 a4 20.Nd4 Rb2 21.a3 Rab8 22.Rac1 Ra2 23.R1c2 Rb1+ 24.Kh2 Raa1 25.Nxe6 fxe6 26.Rc7 Kh7 27.Ra7 Rc1 28.Rxc1 Rxc1 29.Rxa4 Ra1 30.Bf3 e5 31.g4 hxg4 32.Bxg4 Kg6 33.Be6 Ra2 34.Kg1 Rd2 35.Ra5 d4 36.Kf1 d3 37.Rxe5 Rd1+ 38.Kg2 d2 39.Bb3 Rc1 40.Kf3 1/2-1/2
2023.12.26 59th Groningen Open 2023
697619 FM Elgersma, Onno (2310) Nicolai, Am (2156) 1/2-1/2
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Bc5 6.c3 O-O 7.d4 Ba7 8.dxe5 Nxe4 9.Bc2 d5 10.exd6 Nxd6 11.Bg5 f6 12.Bf4 g5 13.Qd3 Qd7 14.Bxd6 cxd6 15.Nbd2 Ne5 16.Qd5+ Qe6 17.Bb3 Qxd5 18.Bxd5+ Kg7 19.Rad1 Rb8 20.Nc4 Rd8 21.Rfe1 Bg4 22.Ne3 Bxe3 23.Rxe3 Bxf3 24.Bxf3 Nxf3+ 25.Rxf3 Rbc8 26.h4 h6 27.Rfd3 Rc6 28.Re1 Kf7 29.hxg5 hxg5 30.Rh3 b5 31.Rh7+ Kg6 32.Ra7 Kf5 33.f3 d5 34.g4+ Kf4 35.Kg2 Rdd6 36.Rd1 f5 37.Rf7 Rf6 38.Re7 Rce6 39.Rd4+ Ke5 40.Rd7 Rd6 41.Re7+ Rde6 42.Rg7 Rg6 43.Rxg6 Rxg6 44.gxf5 Rf6 45.Kg3 Rxf5 46.Kg4 Rf8 47.Rd3 Rg8 48.Rd2 a5 49.Re2+ Kf6 50.Rh2 b4 51.Rh6+ Ke5 52.Rc6 bxc3 53.bxc3 Rf8 54.Rg6 Rf4+ 55.Kg3 1/2-1/2
2023.12.24 59th Groningen Open 2023
702924 WIM Kanyamarala, Trisha (2184) FM Elgersma, Onno (2310) 1/2-1/2
1.d4 Nf6 2.c4 e6 3.Nf3 d5 4.Nc3 c5 5.cxd5 exd5 6.Bg5 Be6 7.Bxf6 Qxf6 8.e4 dxe4 9.Nxe4 Qf4 10.Bb5+ Nc6 11.Qe2 Be7 12.O-O O-O 13.Nxc5 Bxc5 14.dxc5 Bd5 15.Bxc6 bxc6 16.Qd2 Qg4 17.h3 Qh5 18.Nh2 Rad8 19.Qc3 Qg5 20.Qg3 Qd2 21.b3 Qb4 22.Rac1 a5 23.Rfe1 a4 24.bxa4 Qxa4 25.a3 h5 26.Qg5 Qxa3 27.Qxh5 Rde8 28.Ng4 Qb4 29.Ne3 Be4 30.Qh4 Qb5 31.Nc4 Bd5 32.Nd6 Rxe1+ 33.Rxe1 Qa5 34.Re3 Be6 35.Rg3 Ra8 36.Ne4 g6 37.Ng5 Qa1+ 38.Kh2 Bd5 39.Ne4 Kg7 40.Nd6 Qf6 41.Rg5 Be6 42.Qg3 Qd4 43.Rf5 Qb2 44.Rf3 Ra1 45.Ne8+ Kf8 46.Nf6 Kg7 47.Qh4 Qe5+ 48.g3 Bf5 49.Qh7+ Kxf6 50.Qh8+ Ke6 51.Re3 Be4 52.Rxe4 Rh1+ 53.Kxh1 Qxe4+ 54.Kh2 Kd5 55.Qf8 Qf3 56.Qd6+ Kc4 57.Kg1 Qe4 58.h4 Qb1+ 59.Kg2 Qe4+ 60.Kg1 Qb1+ 61.Kg2 Qe4+ 62.Kg1 1/2-1/2
2023.12.23 59th Groningen Open 2023
702885 FM Elgersma, Onno (2310) GM Tiviakov, S (2536) 0-1
1.e4 e6 2.d4 d5 3.Nd2 dxe4 4.Nxe4 Bd7 5.Nf3 Bc6 6.Bd3 Nd7 7.O-O Ngf6 8.Ng3 Be7 9.Re1 O-O 10.Qe2 Bxf3 11.Qxf3 c6 12.c3 Re8 13.Bc2 a5 14.a4 Qc7 15.Ne4 Nxe4 16.Qxe4 g6 17.g3 Rad8 18.Bf4 Qb6 19.Rab1 Nf6 20.Qf3 Rd7 21.Re2 Nd5 22.Bh6 Bf8 23.Bxf8 Rxf8 24.h4 Qd8 25.Re5 Kg7 26.h5 b6 27.Bb3 Rd6 28.Rbe1 Nf6 29.g4 gxh5 30.gxh5 Rg8 31.Rg5+ Kh6 32.Rxg8 Qxg8+ 33.Kf1 Qg5 34.Re5 Qh4 35.Qe3+ Kg7 36.Rg5+ Kf8 37.Ke2 Ke7 38.Qg3 Qe4+ 39.Kd2 Qb1 40.Bc2 Qxb2 41.Qh4 c5 42.d5 Kd7 0-1
2023.12.22 59th Groningen Open 2023
702870 GM Stremavicius, T (2550) FM Elgersma, Onno (2310) 1/2-1/2
1.Nf3 d5 2.g3 Nf6 3.Bg2 e6 4.O-O Be7 5.d4 O-O 6.c4 dxc4 7.Qc2 a6 8.a4 Bd7 9.Rd1 Bc6 10.Nc3 Bxf3 11.Bxf3 Nc6 12.Bxc6 bxc6 13.a5 Rb8 14.Ra4 Rb4 15.Na2 Rb5 16.Rxc4 Rxa5 17.Bd2 Rh5 18.Rxc6 Qd5 19.Bb4 Ng4 20.e4 Qxa2 21.Bxe7 Rxh2 22.Rf1 Ne3 23.Qe2 Nxf1 24.Qxf1 Rh5 25.Bxf8 Kxf8 26.Qc1 Qb3 27.Rxa6 Qf3 28.Ra8+ Ke7 29.Qxc7+ Kf6 30.Qf4+ Qxf4 31.gxf4 Rb5 32.Ra7 1/2-1/2
2023.12.12 Titled Tue 12th Dec Early
713942 FM Dubreuil, J (2111) FM Elgersma, Onno (2310) 1-0
1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.Bf4 Nc6 5.Qd2 Bg7 6.Nf3 Bg4 7.O-O-O Bxf3 8.gxf3 e5 9.dxe5 Nxe5 10.Bb5+ Nfd7 11.Qe3 O-O 12.h4 h5 13.Rhg1 c6 14.Be2 Qxh4 15.Bg5 Qh2 16.Rh1 Qg2 17.Rdg1 Qxg5 18.Qxg5 d5 19.Rxh5 d4 20.f4 dxc3 21.fxe5 cxb2+ 22.Kb1 Nxe5 23.f4 Nd7 24.Bc4 Nf6 25.Qxf6 Bxf6 26.Rxg6+ Bg7 27.Rhg5 b5 28.Rxg7+ Kh8 29.Bd3 a5 30.f5 Rg8 31.f6 Rxg7 32.Rxg7 a4 33.Kxb2 c5 34.e5 c4 35.Be4 Rd8 36.Rh7+ Kg8 37.Bg6 fxg6 38.Rg7+ Kh8 39.e6 b4 40.a3 c3+ 41.Ka2 b3+ 42.cxb3 Rd2+ 43.Kb1 axb3 44.Rd7 Re2 45.Rd8+ Kh7 46.Rd1 Rxe6 47.Rh1+ Kg8 48.a4 Rxf6 49.Rg1 Ra6 50.a5 Rxa5 51.Rxg6+ Kf7 52.Rg3 c2+ 53.Kb2 Ra2+ 54.Kxb3 c1=Q 55.Kxa2 Qc4+ 56.Rb3 Qc2+ 57.Ka3 Ke6 58.Rb4 Qc5 59.Ka4 Kd6 60.Kb3 Qe3+ 61.Kc4 Kc6 62.Ra4 Qe4+ 63.Kb3 Qd3+ 64.Kb4 Qc2 65.Ka3 Kc5 66.Ra7 1-0
2023.12.10 5th Rome City Masters
718415 FM Elgersma, Onno (2310) IM Gomez Ledo, R (2448) 1/2-1/2
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.d3 d6 7.c4 Bg4 8.Nc3 O-O 9.h3 Bh5 10.Be3 Nd7 11.Nd5 Nc5 12.Bxc5 dxc5 13.Bxc6 bxc6 14.Ne3 f6 15.Rc1 Re8 16.Rc3 Bf8 17.Qe2 Rb8 18.Rb1 Qd7 19.Nf5 Bf7 20.Ra3 Rb6 21.Qe3 Reb8 22.b3 Ra8 23.Ra5 Qc8 24.Ne1 Rbb8 25.Nc2 Qb7 26.Qd2 Rd8 27.Qc3 Qb6 28.Rd1 Rd7 29.Rd2 Rad8 30.Ra4 Be6 31.Nfe3 g6 32.Qa5 Ra8 33.Ne1 Kh8 34.Nf3 Bg7 35.Ra3 Kg8 36.Rd1 Kh8 37.Ra4 Kg8 38.Nf1 Kh8 39.Ng3 Kg8 40.Ne2 Kh8 1/2-1/2
2023.12.08 5th Rome City Masters
718377 FM Elgersma, Onno (2310) IM Krishna, CRG (2396) 0-1
1.e4 e6 2.d4 d5 3.Nd2 c5 4.exd5 Qxd5 5.Ngf3 cxd4 6.Bc4 Qd7 7.O-O Nc6 8.Nb3 Nf6 9.Nbxd4 Nxd4 10.Nxd4 a6 11.Bb3 Bd6 12.c3 Qc7 13.h3 Bd7 14.Bg5 Bh2+ 15.Kh1 Bf4 16.Bxf6 gxf6 17.Qh5 Qe5 18.Qf3 Qc7 19.Qh5 Qe5 20.Qf3 Qc7 21.Ne2 Be5 22.Qh5 f5 23.f4 Bf6 24.Qh6 Ke7 25.Nd4 Rag8 26.Qh5 Rg6 27.Rae1 Kf8 28.Rf2 Rhg8 29.Rd1 Kg7 30.Qf3 Kh8 31.Rfd2 Be8 32.Rf2 Rg3 33.Qh5 a5 34.Rdd2 a4 35.Bd1 a3 36.Ne2 Rxg2 37.Rxg2 Bc6 38.Nd4 Rxg2 39.Rxg2 Bxg2+ 40.Kxg2 axb2 41.Nb5 Qc6+ 42.Bf3 Qd7 43.Na3 Kg7 44.Be2 Qa4 45.Nb1 Qe4+ 0-1
2023.12.07 5th Rome City Masters
718351 IM Dhulipalla, Bala Chandra Prasad (2396) FM Elgersma, Onno (2310) 1-0
1.d4 d5 2.c4 e6 3.Nf3 Nf6 4.g3 Be7 5.Bg2 O-O 6.O-O a5 7.Qc2 Nc6 8.Bd2 Bd7 9.a3 a4 10.cxd5 exd5 11.Nc3 h6 12.Bf4 Re8 13.Rad1 Qc8 14.Be5 Bf5 15.Qc1 Qd7 16.Bxf6 Bxf6 17.Ne5 Nxe5 18.dxe5 Bxe5 19.Nxd5 Qb5 20.Nxc7 Bxc7 21.Rd5 Qxe2 22.Rxf5 Qe6 23.Qc2 Be5 24.Re1 Rac8 25.Qb1 Rc5 26.Rf3 Rd8 27.b4 axb3 28.Rxb3 Qf6 29.Rf3 Qe7 30.Rfe3 g6 31.Qb4 Qc7 32.Qxb7 Qxb7 33.Bxb7 Bd4 34.Rd1 Rc7 35.Ba6 Rcd7 36.Red3 Rd6 37.a4 Bc5 38.a5 Rxd3 39.Bxd3 Kg7 40.a6 Ba7 41.Kf1 Kf6 42.Ke2 Rb8 43.Rd2 Re8+ 44.Kd1 Rd8 45.Kc2 g5 46.g4 Rd4 47.f3 Ra4 48.Kb3 Ra1 49.Rc2 Ke5 50.Rc6 f6 51.Be4 Bg1 52.h3 Bd4 53.Kb4 Ra2 54.Kb5 Bg1 55.Rc1 Bf2 56.Bb7 Kf4 57.Kb4 Ke5 58.Rc4 Bg1 59.Kb5 f5 60.Rc6 Rb2+ 61.Ka4 fxg4 62.hxg4 Rb1 63.Rxh6 Be3 64.Rc6 Ba7 65.Rc4 Rf1 66.Kb5 Kd6 67.Be4 Bg1 68.Rc6+ Ke5 69.Rc5+ Bxc5 70.Kxc5 Ra1 71.Kb6 Ra2 72.a7 1-0
2023.12.07 5th Rome City Masters
718329 FM Elgersma, Onno (2310) GM Vignesh, N R (2529) 1-0
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bg5 e6 7.Qd2 a6 8.O-O-O Bd7 9.f3 Be7 10.h4 Nxd4 11.Qxd4 Qc7 12.Kb1 b5 13.g4 Rb8 14.Be3 b4 15.Ne2 O-O 16.Ng3 Rfc8 17.Re1 e5 18.Qd2 Be6 19.g5 Qa5 20.b3 Ne8 21.Bh3 Rc3 22.g6 Nc7 23.gxf7+ Bxf7 24.Nf5 Nb5 25.Nxe7+ Kf8 1-0
2023.12.06 5th Rome City Masters
718317 Dhruva, Thota (2182) FM Elgersma, Onno (2310) 0-1
1.e4 e6 2.d4 d5 3.e5 c5 4.c3 Nc6 5.Nf3 Nge7 6.Na3 Nf5 7.Nc2 cxd4 8.cxd4 Qb6 9.Bd3 Bd7 10.O-O Rc8 11.Bd2 h6 12.b4 Be7 13.a4 a5 14.g4 Nh4 15.Nxh4 Bxh4 16.b5 Nb4 17.Bxb4 axb4 18.a5 Qc7 19.Nxb4 Qc3 20.Nc2 O-O 21.a6 bxa6 22.bxa6 f6 23.exf6 Bxf6 24.a7 Qc7 25.Qe2 Ra8 26.f4 Rxa7 27.g5 Bd8 28.gxh6 Rxa1 29.Rxa1 Qxf4 30.hxg7 Kxg7 31.Qg2+ Qg5 32.Ne1 Rf4 0-1
2023.12.05 5th Rome City Masters
718261 FM Elgersma, Onno (2310) GM Can, E (2563) 0-1
1.e4 c5 2.Nf3 Nc6 3.Bb5 g6 4.O-O Bg7 5.Re1 e5 6.Bxc6 dxc6 7.d3 b6 8.a4 a5 9.h3 Qc7 10.Be3 Nf6 11.Na3 Ba6 12.Qd2 h6 13.Rad1 O-O-O 14.Qc3 Nd7 15.Qb3 f5 16.exf5 gxf5 17.Nh4 f4 18.Bd2 Bf6 19.Nf5 Rdg8 20.Qe6 Kb8 21.Nc4 Rg6 22.Ne7 Nf8 23.Nxc6+ Kb7 24.Qd5 Qxc6 25.Qxc6+ Kxc6 26.Nxe5+ Bxe5 27.Rxe5 Ne6 0-1
2023.12.05 5th Rome City Masters
718298 Pacilli, E (2097) FM Elgersma, Onno (2310) 0-1
1.e4 e6 2.d4 d5 3.Be3 dxe4 4.Nd2 Nf6 5.c3 b6 6.g4 Bb7 7.Bg2 Nbd7 8.g5 Nd5 9.Nxe4 Be7 10.Qg4 Qc8 11.Ne2 O-O 12.Rg1 c5 13.N2g3 g6 14.dxc5 Ne5 15.Qh4 Nd3+ 16.Kd2 Nxe3 17.Nf6+ Bxf6 18.Bxb7 Qxb7 19.gxf6 Rfd8 20.Qh6 Nf4+ 21.Kc1 Ne2+ 22.Nxe2 Nf5 23.Qf4 bxc5 24.Kc2 Rab8 25.b3 c4 26.b4 Qa6 27.Rg4 Qa4+ 28.Kb2 a5 29.Re1 axb4 30.Qxc4 bxc3+ 0-1
2023.11.25 Dutch League 2023-24
732363 FM Wempe, Jo (2312) FM Elgersma, Onno (2305) 0-1
1.d4 d5 2.Nf3 Nf6 3.g3 e6 4.Bg2 Be7 5.O-O O-O 6.c4 a5 7.Qc2 Nc6 8.Nc3 dxc4 9.Bg5 Nd5 10.Bxe7 Qxe7 11.Nb5 Nb6 12.Na3 e5 13.dxe5 Be6 14.Rfd1 Rad8 15.Nb5 Rxd1+ 16.Rxd1 Rd8 17.Rxd8+ Qxd8 18.Qd2 Qxd2 19.Nxd2 Nxe5 20.Nxc7 c3 21.bxc3 Bxa2 22.Kf1 Nec4 23.Ke1 Nxd2 24.Kxd2 Bc4 25.Bxb7 a4 26.Ba6 a3 27.Kc1 Bb3 28.Bb5 Kf8 29.Na6 Ke7 30.Nc5 Bd5 31.e4 Kd6 32.exd5 Kxc5 33.Be8 Nxd5 34.Kc2 f6 35.Bf7 a2 36.Kb2 Nxc3 37.Bg8 h6 38.h4 Kd4 39.Bh7 Nd1+ 40.Kxa2 Nxf2 41.Kb3 Ke3 42.Kc4 0-1
2023.11.21 Titled Tue 21st Nov Late
739100 FM Elgersma, Onno (2305) IM Gholami Orimi, Mahdi (2442) 0-1
1.g3 Nf6 2.Bg2 d5 3.Nf3 e6 4.O-O b5 5.d4 Be7 6.a4 b4 7.c4 bxc3 8.Nxc3 O-O 9.Bf4 c6 10.Rc1 Nbd7 11.Ne5 Nxe5 12.Bxe5 Ba6 13.Re1 Qb6 14.Qd2 h6 15.Red1 Ng4 16.Bf4 g5 17.a5 Qb3 18.h3 Nxf2 19.Kxf2 gxf4 20.gxf4 Kh7 21.Bf3 Bh4+ 22.Ke3 Rab8 23.Qc2+ f5 24.Rg1 Qxb2 25.Qxb2 Rxb2 26.Na4 Rb3+ 27.Kd2 Bf2 28.Nc5 Be3+ 29.Kc2 Ra3 30.Nxa6 Bxd4 31.Rgd1 Be3 32.Rb1 Rxa5 33.Rb7+ Kg6 34.Nc7 Kf6 35.Bh5 Bxf4 36.Ne8+ Ke5 37.Re1 Be3 38.Reb1 Ra2+ 39.Kd3 f4 40.Ng7 c5 41.Re7 c4+ 42.Kc3 Bd2# 0-1
2023.11.21 Titled Tue 21st Nov Late
738856 FM Elgersma, Onno (2305) CM Guzman Lozano, C (1837) 1-0
1.g3 c6 2.Bg2 d5 3.b3 Nf6 4.Bb2 e6 5.Nf3 Be7 6.O-O Nbd7 7.c4 O-O 8.d4 Ne4 9.Nc3 f5 10.e3 Nxc3 11.Bxc3 Nf6 12.Qe1 Ne4 13.Bb4 Bxb4 14.Qxb4 Qd6 15.Qxd6 Nxd6 16.Ne5 Ne4 17.Bxe4 fxe4 18.f4 a5 19.a3 Ra6 20.b4 b5 21.cxb5 cxb5 22.Rfc1 Rd8 23.bxa5 Bd7 24.Rc7 Be8 25.Rac1 Rxa5 26.Re7 Rxa3 27.Rcc7 Ra1+ 28.Kg2 Ra2+ 29.Kh3 g5 30.Rg7+ Kf8 31.Rxh7 Kg8 32.fxg5 Rf2 33.Ng4 Rd7 34.Rcxd7 Bxd7 35.Rxd7 b4 36.Nf6+ Kf8 37.Rb7 Rb2 38.g6 1-0
2023.11.21 Titled Tue 21st Nov Late
739408 IM Maksimovic, Bojan (2497) FM Elgersma, Onno (2305) 0-1
1.a3 g6 2.e4 Bg7 3.d4 d6 4.Nc3 Nf6 5.Be3 Nc6 6.Nf3 Bg4 7.Qd2 Bxf3 8.gxf3 e5 9.d5 Nd4 10.Bxd4 exd4 11.Bb5+ Nd7 12.Ne2 O-O 13.Bxd7 Qxd7 14.O-O-O Qh3 15.Qd3 f5 16.Nxd4 fxe4 17.fxe4 Qxd3 18.Rxd3 Rxf2 19.Ne6 Be5 20.h4 h6 21.Rb3 b6 22.Rd3 Kh7 23.Re1 Rc8 24.Rd2 Bxb2+ 25.Kd1 Rf3 26.Rd3 Rf2 27.Rd2 Rf6 28.Rd3 c5 29.Rb3 Be5 30.a4 c4 31.Rb4 Bc3 32.Rb5 Bxe1 33.Kxe1 Re8 34.Ke2 Rexe6 35.dxe6 Rxe6 36.Ke3 Re5 37.Rb4 d5 38.Kd4 Rxe4+ 39.Kxd5 Rxh4 40.Kc6 Rf4 41.Kb7 Rf7+ 42.Ka6 h5 43.Rxc4 Kh6 44.a5 bxa5 45.Rc8 h4 46.c4 h3 47.Rh8+ Rh7 48.Rxh7+ Kxh7 49.c5 h2 50.c6 h1=Q 51.c7 Qc6+ 52.Kxa5 Qxc7+ 53.Ka6 Qb6# 0-1
2023.11.21 Titled Tue 21st Nov Late
739675 FM Elgersma, Onno (2305) GM Vasquez Schroeder, R (2475) 0-1
1.g3 c5 2.Bg2 g6 3.c4 Bg7 4.Nf3 Nc6 5.O-O d6 6.Nc3 e6 7.d3 Nge7 8.Bg5 h6 9.Be3 Nf5 10.Bd2 O-O 11.a3 b6 12.Rb1 Bb7 13.b4 Qd7 14.e3 Rac8 15.Qe2 Rfd8 16.Rfc1 Ne5 17.a4 cxb4 18.Rxb4 Nc6 19.Rbb1 Ba8 20.Ne1 Na5 21.Bxa8 Rxa8 22.Qf3 Rac8 23.h4 h5 24.Ne4 Nc6 25.Rb5 d5 26.cxd5 Ne5 27.Qd1 exd5 28.Ng5 Rxc1 29.Bxc1 Nc6 30.Ba3 f6 31.Ngf3 Kh7 32.Ng2 Ne5 33.Nf4 Qc6 34.Nd4 Nxd4 35.exd4 Ng4 36.Qf3 Qc3 37.Be7 Qe1+ 38.Kg2 Qxe7 39.Nxd5 Qd7 40.Nf4 Re8 41.Rd5 Qxa4 42.Nxh5 gxh5 43.Rxh5+ Nh6 44.Qf5+ Kg8 45.Qg6 Qc6+ 46.d5 Qd7 47.Rxh6 Qxd5+ 0-1
2023.11.21 Titled Tue 21st Nov Late
739166 Nita, L (2134) FM Elgersma, Onno (2305) 0-1
1.e4 g6 2.Nf3 Bg7 3.d4 d6 4.Be3 Nc6 5.c3 Nf6 6.Bd3 O-O 7.h3 e5 8.d5 Ne7 9.Nbd2 Nd7 10.Qc2 h6 11.g4 c6 12.c4 f5 13.gxf5 gxf5 14.Nb3 f4 15.Bd2 cxd5 16.cxd5 a5 17.a4 b6 18.Rc1 Nc5 19.Nxc5 bxc5 20.Ke2 Kh8 21.Rcg1 Bf6 22.Qc3 Bd7 23.b3 Qb6 24.Bc4 Qb4 25.Qb2 Qb6 26.Ne1 Bxa4 27.Nd3 Bb5 28.Qa1 a4 29.Bxb5 Qxb5 30.bxa4 Rxa4 31.Qc3 Rxe4+ 32.Kf3 Nxd5 33.Qa3 Rd4 34.Nxf4 exf4 35.Qc1 Qd3+ 36.Kg2 0-1
2023.11.21 Titled Tue 21st Nov Late
738696 GM Beerdsen, Thomas (2504) FM Elgersma, Onno (2305) 1-0
1.e4 g6 2.d4 d6 3.Nc3 Bg7 4.Bg5 Nc6 5.Nf3 Bg4 6.d5 Bxf3 7.gxf3 Nb8 8.Qd2 h6 9.Be3 Nf6 10.O-O-O c6 11.dxc6 Nxc6 12.Kb1 Rc8 13.f4 Qa5 14.f3 O-O 15.f5 Ne5 16.Be2 h5 17.Rhg1 Qb4 18.a3 Qa5 19.Nd5 Qd8 20.Nxf6+ Bxf6 21.f4 Ng4 22.Bxg4 hxg4 23.Rxg4 Rc4 24.fxg6 Rxe4 25.gxf7+ Kh7 26.Qd3 d5 27.Bd4 Bh4 28.Rxh4+ Kg6 29.f5+ Kxf5 30.Rf1+ Ke6 31.Rxe4+ dxe4 32.Qxe4+ Kd7 33.Qxb7+ Qc7 34.Qxc7+ Kxc7 35.Bg7 Rg8 36.f8=B 1-0
2023.11.21 Titled Tue 21st Nov Late
738528 Palmer, Reegan (1860) FM Elgersma, Onno (2305) 0-1
1.c4 g6 2.Nc3 Bg7 3.g3 Nf6 4.Bg2 O-O 5.e4 c5 6.d3 d6 7.Nge2 Nc6 8.O-O Rb8 9.h3 a6 10.a4 Nd7 11.f4 Nd4 12.a5 e6 13.Be3 f5 14.g4 b5 15.axb6 Qxb6 16.Bxd4 cxd4 17.Na4 Qc7 18.Ng3 Nc5 19.Nxc5 dxc5 20.exf5 exf5 21.Bd5+ Kh8 22.Qe2 fxg4 23.hxg4 Bb7 24.Bxb7 Qxb7 25.Rab1 Qc7 26.Qf2 Bh6 27.g5 Bxg5 28.Qg2 Bxf4 29.Ne4 Be3+ 30.Kh1 Qe5 31.Rxf8+ Rxf8 32.Rf1 Qh5+ 0-1
2023.11.21 Titled Tue 21st Nov Late
739554 FM Elgersma, Onno (2305) FM Tatarinov, Dmitry (2332) 1-0
1.g3 d5 2.Bg2 Nf6 3.d3 c5 4.Nf3 Nc6 5.O-O e6 6.c4 Be7 7.Bf4 O-O 8.Nc3 d4 9.Na4 Nd7 10.a3 e5 11.Bc1 a5 12.e3 Re8 13.Re1 Bf8 14.Nd2 Qc7 15.Ne4 h6 16.g4 b6 17.g5 hxg5 18.Nxg5 Bb7 19.Qh5 Nf6 20.Qh4 dxe3 21.Rxe3 g6 22.Bd5 Nd8 23.Rf3 Bg7 24.Rxf6 Bxf6 25.Qh7+ Kf8 26.Nxf7 Bxd5 27.Bh6+ Ke7 28.Ng5+ Kd6 29.Qxg6 Qe7 30.cxd5 Kc7 31.d6+ Qxd6 32.Ne4 Qc6 33.Nxf6 Re6 34.Qg7+ Kb8 35.Nd7+ Kc8 36.Ndxb6+ Kb8 37.Nd7+ Kc8 38.Ndb6+ Kb8 39.Nd7+ Kc8 40.Nab6+ Kb7 41.Nxa8 Kxa8 42.Nxe5 Qd6 43.Ng4 Rg6 44.Qc3 Rxg4+ 45.Kf1 1-0
2023.11.04 Dutch League 2023-24
755090 FM Elgersma, Onno (2305) FM De Wit, M (2112) 1-0
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nge7 5.O-O g6 6.c3 Bg7 7.d4 exd4 8.cxd4 d5 9.exd5 Nxd5 10.Re1+ Be6 11.Bg5 Qd6 12.Nbd2 b5 13.Bb3 O-O 14.Ne4 Qd7 15.Qd2 Kh8 16.Rac1 Bf5 17.Ne5 Nxe5 18.dxe5 Bxe4 19.Rxe4 c6 20.Rxc6 Qxc6 21.Bxd5 Qd7 22.Bxa8 Qxd2 23.Bxd2 Rxa8 24.Bc3 Kg8 25.f4 Bf8 26.Kf2 Bc5+ 27.Kf3 Kf8 28.g4 Rd8 29.Ke2 Ke7 30.f5 Rd5 31.b3 Kf8 32.f6 Rd8 33.h3 Rc8 34.Bd2 Rc6 35.a4 Ke8 36.g5 Kf8 37.Kf3 Ba3 38.axb5 axb5 39.Bb4+ Bxb4 40.Rxb4 Rc5 41.Ke4 Ke8 42.Kd4 Rc1 43.Rxb5 Rd1+ 44.Ke4 Re1+ 45.Kf3 Rh1 46.Kg2 Re1 47.Rb8+ Kd7 48.Rb7+ Ke8 49.Re7+ Kf8 50.b4 Rb1 51.Rb7 Ke8 52.b5 Re1 53.b6 Rb1 54.Re7+ 1-0
2023.10.28 26th Hoogeveen Open 2023
763900 GM Lodici, Lorenzo (2537) FM Elgersma, Onno (2266) 1-0
1.Nf3 d5 2.g3 Nf6 3.Bg2 e6 4.c4 Be7 5.d4 O-O 6.Nc3 dxc4 7.Ne5 Qd6 8.O-O Qa6 9.a4 Rd8 10.Nb5 Ne8 11.Qc2 c6 12.Na3 Rxd4 13.Be3 Rd8 14.Naxc4 Nd7 15.Nd3 Nef6 16.b4 Nd5 17.Bd2 N7b6 18.Ncb2 e5 19.e4 Nf6 20.Nxe5 Qe2 21.Rad1 Qh5 22.Nbd3 Ng4 23.Nxg4 Qxg4 24.Nf4 g5 25.h3 Qd7 26.Bc3 Qe8 27.Nh5 Be6 28.Nf6+ Bxf6 29.Bxf6 Rxd1 30.Qxd1 h6 31.f4 Nd7 32.fxg5 Nxf6 33.Rxf6 Qd8 34.Qh5 Qd4+ 35.Kh2 Qe5 36.Qxh6 Rd8 37.Rf4 Qg7 38.Qh4 Rd2 39.Rf6 Qh7 40.Rh6 Qg7 41.Qf4 Qd4 42.g6 Bc4 43.gxf7+ Bxf7 44.Qg5+ Kf8 45.Rh8+ Qxh8 46.Qxd2 Qe5 47.h4 b6 48.Qf4 Qb2 49.Qd6+ Kg7 50.Qe7 a5 51.bxa5 bxa5 52.e5 Qa2 53.e6 Qxe6 54.Qxe6 Bxe6 55.Bxc6 1-0
2023.10.27 26th Hoogeveen Open 2023
763886 FM Elgersma, Onno (2266) Kazarjan, Gachatur (1970) 1-0
1.e4 c5 2.Nf3 d6 3.Nc3 Nf6 4.e5 dxe5 5.Nxe5 g6 6.Bc4 e6 7.Bb5+ Nbd7 8.Qf3 Qe7 9.d4 cxd4 10.Bg5 dxc3 11.Bxf6 cxb2 12.O-O bxa1=Q 13.Rxa1 Qc5 14.Qxb7 Qd5 15.Qxd5 exd5 16.Nxd7 Bxd7 17.Re1+ Be7 18.Rxe7+ Kf8 19.Rxd7 Rg8 20.Bc6 Rb8 21.h4 1-0
2023.10.26 26th Hoogeveen Open 2023
763872 FM Elgersma, Onno (2266) Mueer, S (2230) 1-0
1.e4 c5 2.Nf3 e6 3.g3 Nc6 4.Bg2 Nf6 5.Qe2 Be7 6.e5 Nd5 7.Nc3 d6 8.exd6 Qxd6 9.O-O O-O 10.Re1 b6 11.d4 cxd4 12.Nxd5 exd5 13.Bf4 Qc5 14.a3 b5 15.Ne5 Be6 16.Nd3 Qb6 17.Bd2 Bd6 18.Qh5 Ne7 19.Re2 Rac8 20.Bg5 Ng6 21.Rae1 b4 22.Rxe6 fxe6 23.Rxe6 Rce8 24.Rxe8 Rxe8 25.Bxd5+ Kh8 26.Bf7 Re6 27.Bxe6 bxa3 28.bxa3 Bxg3 29.Bf5 Nf8 30.hxg3 1-0
2023.10.25 26th Hoogeveen Open 2023
763837 GM Ernst, S (2551) FM Elgersma, Onno (2266) 1-0
1.Nf3 d5 2.e3 Nf6 3.b3 e6 4.Bb2 c5 5.c4 Nc6 6.cxd5 exd5 7.Bb5 Bd6 8.O-O O-O 9.h3 Re8 10.Re1 a6 11.Bxc6 bxc6 12.Nc3 Rb8 13.Ba3 Ne4 14.Rc1 Re6 15.Kf1 Rf6 16.d3 Nxc3 17.Rxc3 Qa5 18.Bb2 Rg6 19.Rc2 Qc7 20.Ba3 Rb5 21.e4 Be6 22.Qc1 Qd7 23.e5 Bf8 24.Bxc5 Bf5 25.Rd1 Rxg2 26.Kxg2 Bxh3+ 27.Kh2 Bxc5 28.Rxc5 Qg4 29.Qg5 Qxg5 30.Nxg5 Rxc5 31.Kxh3 Rc2 32.f4 Rxa2 33.Rc1 h6 34.Nf3 Re2 35.Kg3 Re3 36.Rd1 Re2 37.Rd2 1-0
2023.10.25 26th Hoogeveen Open 2023
763853 FM Van Foreest, Machteld (2266) FM Elgersma, Onno (2266) 1/2-1/2
1.e4 e6 2.Qe2 c5 3.Nf3 Nc6 4.g3 e5 5.Bg2 Nf6 6.c3 d6 7.O-O Be7 8.Rd1 O-O 9.d4 cxd4 10.cxd4 exd4 11.Nxd4 Bg4 12.Bf3 Bxf3 13.Qxf3 Nxd4 14.Rxd4 Qb6 15.Rd1 Rac8 16.Nc3 Rfe8 17.Rb1 Qa6 18.Be3 b5 19.a3 Qb7 20.Qf5 a6 21.Bd4 Qd7 22.Qf4 Qh3 23.Bxf6 Bxf6 24.Qxd6 Bxc3 25.bxc3 Rxe4 26.Qd8+ Re8 27.Qb6 Qe6 28.Rd6 Qe4 29.Rbd1 h5 30.Qxa6 h4 31.Qxb5 h3 32.Qf1 Rxc3 33.Qxh3 Rxa3 34.R6d4 Qe2 35.Rf1 Qe5 36.Qd7 Rea8 37.Rf4 R3a7 38.Qc6 Ra1 39.Qc4 Rxf1+ 40.Kxf1 Qh5 41.Kg1 Rd8 42.h3 Qd1+ 43.Kh2 Qd5 44.Qc7 Re8 45.Qc3 Qe5 46.Qd3 Qc5 47.Qf3 Qe7 48.Qh5 Qa7 49.Qf5 g6 50.Qd5 Re6 51.Qd8+ Kg7 52.Qd2 Qa1 53.Rh4 Qf6 54.Kg2 Re5 55.Qb2 Rf5 56.Qc2 Qd6 57.Qc3+ Qf6 58.Qe3 Qc6+ 59.Kh2 Qf6 60.Rf4 Rxf4 61.gxf4 Qc6 62.Qe5+ Kg8 63.Kg3 Qh1 64.Qe8+ Kg7 65.Qe5+ Kg8 66.Qe8+ 1/2-1/2
2023.10.24 26th Hoogeveen Open 2023
763822 FM Elgersma, Onno (2266) IM Maatman, Nick (2382) 1-0
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.h3 e5 7.Nf3 Be7 8.g4 h6 9.Rg1 Be6 10.g5 hxg5 11.Nxg5 Nc6 12.Be3 Qa5 13.Qd2 Rd8 14.Rd1 Rd7 15.a3 Bd8 16.Nxe6 fxe6 17.Bc4 Kf7 18.Rg3 b5 19.Bb3 Qc7 20.Qd3 Na5 21.Ba2 Nc4 22.Bc1 Qc6 23.Kf1 Ba5 24.b4 Bb6 25.a4 Rc8 26.Bg5 Bd8 27.axb5 axb5 28.Qe2 Kg8 29.h4 Rf7 30.h5 Bb6 31.Rf3 Bd4 32.h6 Bxc3 33.Bxf6 gxf6 34.Rxc3 Kh8 35.Rg3 f5 36.Qh5 Rcf8 37.Rg7 Rf6 38.Qg5 R6f7 39.Qg6 Ne3+ 40.Kg1 1-0
2023.10.23 26th Hoogeveen Open 2023
763807 FM Elgersma, Onno (2266) Hoffman, Ro (2032) 1-0
1.e4 c5 2.Nf3 a6 3.c4 Nc6 4.Nc3 e5 5.g3 d6 6.Bg2 g6 7.d3 Bg7 8.Bg5 f6 9.Bd2 Nge7 10.a3 O-O 11.O-O Nd4 12.Nxd4 cxd4 13.Nd5 Nxd5 14.cxd5 f5 15.f4 fxe4 16.dxe4 Bd7 17.Qb3 Bh6 18.a4 b5 19.Qa3 Rf6 20.Rad1 Bg4 21.Rde1 Rc8 22.axb5 axb5 23.Qd3 Qb6 24.h3 Bd7 25.fxe5 Rxf1+ 26.Rxf1 Bxd2 27.Qxd2 dxe5 28.Qf2 Qd6 29.Qf7+ Kh8 30.Rf6 Qc7 31.Qe7 Qd8 32.Qxe5 Kg8 33.Qxd4 Rc4 34.Qf2 Qc8 35.Kh2 Rc2 36.Rf8+ Qxf8 37.Qxc2 Qd6 38.Qc3 b4 39.Qd4 1-0
2023.10.22 26th Hoogeveen Open 2023
770721 Nijdam, Brian (1918) FM Elgersma, Onno (2266) 0-1
1.e4 e6 2.d3 d5 3.Nd2 c5 4.Ngf3 Nc6 5.g3 Nf6 6.Bg2 Be7 7.O-O O-O 8.Re1 Qc7 9.Nf1 dxe4 10.dxe4 Rd8 11.Qe2 e5 12.c3 h6 13.h3 Be6 14.Nh4 c4 15.Ne3 b5 16.Nef5 Bf8 17.g4 Nh7 18.Be3 b4 19.Rad1 Qa5 20.Nf3 bxc3 21.bxc3 Qxc3 22.g5 h5 23.g6 fxg6 24.N5h4 Bf7 25.Rd5 Rxd5 26.exd5 Bxd5 27.Bd2 Qa3 28.Nxe5 Qd6 29.Nxc4 Qd7 30.Bxd5+ Qxd5 31.Qe6+ Qxe6 32.Rxe6 Nd4 33.Re4 Rd8 34.Be3 Ne2+ 35.Kg2 Nf6 36.Bg5 Nc3 37.Bxf6 gxf6 38.Re3 Nd5 39.Rf3 Kg7 40.Kf1 Rc8 41.Ne3 Nxe3+ 42.Rxe3 Rc4 43.Nf3 Bc5 44.Re2 Ra4 45.Rc2 Bb6 46.Re2 g5 47.Rc2 Kg6 48.Re2 Kf5 49.Kg2 Rc4 50.Rb2 Ke6 51.Rd2 Rf4 52.Ne1 Re4 53.Nf3 Ra4 54.Rc2 Kd5 55.Re2 Rf4 56.Rc2 Re4 57.Rb2 Kc6 58.Kf1 Kb7 59.Rc2 Rf4 60.Kg2 Ka6 61.Ne1 Kb5 62.Nd3 Rd4 63.Nc1 Kb4 64.Nb3 Rf4 65.Kf1 f5 66.Nc1 Rf3 67.Kg2 g4 68.hxg4 fxg4 69.Re2 Kc3 70.Nb3 h4 71.Nd2 h3+ 72.Kf1 h2 73.Kg2 Kd3 0-1
2023.10.21 26th Hoogeveen Open 2023
770705 Van Rootselaar, Rik (2015) FM Elgersma, Onno (2266) 1-0
1.d4 d5 2.c4 e6 3.Nf3 Nf6 4.g3 Bb4+ 5.Nbd2 O-O 6.Bg2 b6 7.O-O Bb7 8.a3 Be7 9.cxd5 exd5 10.b4 Nbd7 11.Ne5 a5 12.b5 Nxe5 13.dxe5 Nd7 14.Nf3 a4 15.h4 h6 16.Bh3 Bc5 17.e6 Qf6 18.Bg5 hxg5 19.hxg5 Qg6 20.exd7 f5 21.Qd2 Qd6 22.Qf4 Qxd7 23.g6 Qd6 24.Qg5 Rf6 25.Nh4 Bc8 26.e3 Be6 27.Nxf5 Bxf5 28.Bxf5 Qe5 29.g4 Kf8 30.Kg2 Ke7 31.Rh1 Rg8 32.Qf4 Qxf4 33.exf4 Kd6 34.Kf3 c6 35.Bd3 Bd4 36.Rad1 c5 37.f5 Rff8 38.Rhe1 Re8 39.g5 Rh8 40.Rxe8 Rxe8 41.Rd2 Bc3 42.Re2 Rxe2 43.Kxe2 Ke7 44.Bc2 Kf8 45.Bxa4 Bb2 46.Bb3 Bxa3 47.Bxd5 Bc1 48.f6 Bxg5 49.f7 Bh4 50.Ke3 Bf6 51.Bc4 Bd4+ 52.Ke2 Bc3 53.Kd3 Bd4 54.f4 Bf6 55.Ke4 Bc3 56.Kd5 Bd2 57.f5 Bg5 58.Kc6 Bd8 59.Kb7 Ke7 60.f6+ Kf8 61.fxg7+ Kxg7 62.Kc8 Be7 63.Kc7 Kxg6 64.Kxb6 Kg7 65.Kc7 Bg5 66.b6 Bf4+ 67.Kc8 Kf8 68.b7 1-0
2023.10.15 TCh-BEL 2023-24
776956 Peeren, Y (2095) FM Elgersma, Onno (2259) 1-0
1.e4 e6 2.Nf3 d5 3.Nc3 Nf6 4.e5 Nfd7 5.d4 c5 6.dxc5 Bxc5 7.Bd3 Nc6 8.Bf4 a6 9.O-O h6 10.h4 Nd4 11.h5 Nxf3+ 12.Qxf3 Qh4 13.g3 Qe7 14.Rfe1 O-O 15.Rad1 Kh8 16.Qg4 b5 17.Ne2 f5 18.Qf3 Bb7 19.c3 Ba7 20.Nd4 b4 21.g4 Nc5 22.Bb1 Ne4 23.gxf5 Bxd4 24.f6 Bxf2+ 25.Kh2 gxf6 26.Rxe4 dxe4 27.Qxf2 e3 28.Qh4 Rad8 29.Rg1 Rd2+ 30.Kh3 Rg8 31.Rxg8+ Kxg8 32.exf6 Qf7 33.Bg6 e5 34.Bxf7+ Kxf7 35.Bxe3 1-0
2023.10.10 Titled Tue 10th Oct Late
784918 FM Elgersma, Onno (2266) FM Aung Thant Zin (2268) 1/2-1/2
1.e4 c5 2.Nf3 Nc6 3.Bb5 e6 4.O-O Nge7 5.Re1 a6 6.Bf1 d5 7.exd5 Nxd5 8.d4 Be7 9.c4 Nf6 10.Be3 cxd4 11.Nxd4 Bd7 12.Nc3 O-O 13.a3 Qc7 14.h3 Rfd8 15.Nxc6 Bxc6 16.Qc2 Rac8 17.Rad1 Qb8 18.Rxd8+ Rxd8 19.Rd1 h6 20.Bd3 b5 21.cxb5 axb5 22.Be2 Rxd1+ 23.Qxd1 Qb7 24.Bd4 b4 25.axb4 Qxb4 26.Qd2 Ne4 27.Nxe4 Bxe4 28.Qxb4 Bxb4 29.Bc3 Bxc3 30.bxc3 Kf8 31.f3 Bb7 32.Kf2 Ke7 33.Ke3 Kd6 34.Bd3 Kc5 35.g3 Bd5 36.h4 e5 37.f4 exf4+ 38.Kxf4 Be6 39.Ke5 Bc4 40.Bxc4 Kxc4 41.Kd6 Kxc3 42.Ke7 f5 43.Ke6 g6 44.Kf6 Kd4 45.Kxg6 Ke4 46.Kxh6 Kf3 47.Kg5 Kxg3 48.h5 f4 49.h6 f3 50.h7 f2 51.h8=Q f1=Q 52.Qh4+ Kg2 53.Qg4+ Kh2 54.Qh4+ Qh3 55.Qb4 Qg3+ 56.Kh5 Qh3+ 57.Kg5 Qg3+ 58.Kf5 Qf3+ 59.Ke5 Qe3+ 60.Kd5 Qd3+ 61.Kc6 Qf3+ 62.Kb6 Qe3+ 63.Ka6 Qd3+ 64.Kb7 Qd5+ 65.Kc7 Qf7+ 66.Kc6 Qe6+ 67.Kb5 Qd5+ 68.Ka6 Qc6+ 69.Ka7 Qc7+ 70.Ka6 Qc6+ 71.Ka5 Qc7+ 72.Ka4 Qc6+ 73.Kb3 Qd5+ 74.Kb2 Qe5+ 75.Kc2 Qf5+ 76.Kd1 Qh5+ 77.Ke1 Qe5+ 78.Kf1 Qf5+ 79.Ke2 Qe5+ 80.Kf3 Qf5+ 81.Ke3 Qe5+ 82.Kd2 Qd5+ 83.Kc3 Qc6+ 84.Kb2 Qf6+ 85.Kb1 Qf5+ 86.Ka1 Qe5+ 87.Ka2 Qd5+ 88.Kb2 Qe5+ 89.Kc2 Qf5+ 90.Kd2 Qg5+ 91.Ke2 Qh5+ 92.Kf1 Qf5+ 93.Ke2 Qe5+ 94.Kf3 Qf5+ 95.Qf4+ Qxf4+ 96.Kxf4 1/2-1/2
2023.10.10 Titled Tue 10th Oct Late
784816 IM Gedajlovic, Max (2407) FM Elgersma, Onno (2266) 1-0
1.d4 d5 2.Nf3 Nf6 3.e3 g6 4.c4 Bg7 5.b4 O-O 6.a4 Ne4 7.Bb2 Bf5 8.Qb3 c6 9.Be2 a5 10.cxd5 axb4 11.Qxb4 cxd5 12.O-O Nc6 13.Qb5 Na5 14.Nc3 Nd6 15.Qxd5 Be6 16.Qg5 Ndc4 17.Rab1 Rc8 18.Ba1 Na3 19.Rbd1 Nb3 20.Nb5 Nxb5 21.Qxb5 Nxa1 22.Rxa1 Bd5 23.h3 Rc2 24.Rfc1 Bc6 25.Qd3 Rxc1+ 26.Rxc1 Bxa4 27.d5 Qd6 28.e4 Bd7 29.Qb3 Rc8 30.Rb1 b5 31.Bxb5 Rb8 32.Qd3 Qb6 33.Bxd7 Qxb1+ 34.Qxb1 Rxb1+ 35.Kh2 Rb4 36.e5 Rb1 37.Kg3 Rd1 38.Bc6 f5 39.Kf4 h6 40.Ke3 g5 41.Ke2 Rb1 42.Bd7 Rb6 43.Bxf5 Kf8 44.Ke3 Rb3+ 45.Bd3 Rb4 46.g4 Ke8 47.Bg6+ Kd8 48.Bf5 Rb3+ 49.Bd3 Rb4 50.Bf5 Rf4 51.Nd4 Bxe5 52.Nc6+ Kc7 53.Nxe5 Ra4 54.Nf7 Ra3+ 55.Bd3 Ra4 56.Nxh6 Kd6 57.Nf5+ Kxd5 58.Nxe7+ Ke5 59.Nf5 Ra1 60.h4 gxh4 61.Nxh4 Rh1 62.Nf3+ Ke6 63.g5 Ra1 64.Kf4 Ra4+ 65.Be4 Ra3 66.Nd4+ Kf7 67.Ke5 Kg7 68.f4 Ra5+ 69.Bd5 Ra1 70.f5 Re1+ 71.Be4 Ra1 72.Ne6+ Kh8 73.g6 Ra5+ 74.Kf6 Ra7 75.Kg5 Kg8 76.f6 Ra5+ 77.Kh6 Ra7 78.Ng5 Rb7 79.f7+ Kf8 80.Nh7+ Ke7 81.f8=Q+ Kd7 82.Qf7+ Kd8 83.Qxb7 Ke8 84.Nf6+ Kd8 85.Qd7# 1-0
2023.10.10 Titled Tue 10th Oct Late
784608 GM Drygalov, Andrey (2475) FM Elgersma, Onno (2266) 0-1
1.e4 c6 2.d4 d5 3.e5 c5 4.Nf3 cxd4 5.Nxd4 e6 6.c4 Nc6 7.Nc3 Bc5 8.Nb3 Bb4 9.cxd5 exd5 10.Bb5 Ne7 11.O-O O-O 12.Bg5 h6 13.Bh4 a6 14.Bxc6 bxc6 15.a3 Bxc3 16.bxc3 g5 17.Bg3 Nf5 18.Nd4 Be6 19.Nxc6 Qd7 20.Nd4 Rac8 21.Qh5 Kg7 22.Qf3 Rc4 23.h4 Rfc8 24.hxg5 hxg5 25.Nxf5+ Bxf5 26.Qe3 Qe7 27.Qd2 Be6 28.Rac1 Rh8 29.f4 gxf4 30.Bxf4 Qh4 31.Rf3 d4 32.cxd4 Rxc1+ 33.Qxc1 Qh1+ 34.Kf2 Qxc1 35.Bxc1 Bd5 36.Rg3+ Kf8 37.a4 Ke7 38.Rg4 Ke6 39.Rf4 Rc8 40.Rf6+ Ke7 41.Ba3+ Ke8 42.Rxa6 Rc2+ 43.Ke1 Rxg2 44.Bd6 Kd7 45.Ra7+ Ke6 46.a5 Kf5 47.Kf1 Ra2 48.Rc7 Ke4 49.Bc5 Rxa5 50.Rc8 Ra2 51.Ke1 Ke3 52.Kd1 Be4 53.Bb4 Rb2 54.Bc3 Rb1# 0-1
2023.10.07 Dutch League 2023-24
786311 FM Elgersma, Onno (2266) WIM Muetsch, Annmarie (2262) 1-0
1.e4 d6 2.d4 Nf6 3.Nc3 e5 4.Nf3 Nbd7 5.Bc4 Be7 6.O-O O-O 7.a4 a6 8.Re1 b6 9.h3 c6 10.d5 Bb7 11.dxc6 Bxc6 12.Bg5 h6 13.Bxf6 Nxf6 14.Qd3 Bb7 15.Rad1 Qc7 16.Nh4 Rfd8 17.Nf5 Bf8 18.Bb3 Bc8 19.Qf3 Bxf5 20.Qxf5 Qc8 21.Qf3 Ra7 22.Nd5 Nxd5 23.Rxd5 Be7 24.Red1 Rf8 25.Qe3 Qb8 26.R5d3 Rc7 27.Qe2 b5 28.axb5 Qxb5 29.Qh5 Qc6 30.Rc3 Qb6 31.Rf3 Bd8 32.Rfd3 Be7 33.Rg3 Kh8 34.Rdd3 Qb4 35.Rdf3 Bd8 36.Qg4 f5 37.Rxf5 d5 38.c3 Qc5 39.Bxd5 Rxf5 40.Qxf5 Bf6 41.Qe6 1-0
2023.10.03 Titled Tue 3rd Oct Late
792336 WGM Perez Rodriguez, Je (2242) FM Elgersma, Onno (2266) 1-0
1.e4 e6 2.d4 d5 3.Bd3 dxe4 4.Bxe4 Nf6 5.Bf3 Nbd7 6.Ne2 c6 7.O-O Bd6 8.c4 O-O 9.Nbc3 e5 10.Ng3 exd4 11.Qxd4 Ne5 12.Be2 Be6 13.Bg5 Bc7 14.Qxd8 Bxd8 15.b3 h6 16.Be3 Bc7 17.Rad1 b6 18.h3 Rad8 19.f4 Ng6 20.Bd3 Bc8 21.Nf5 Bb7 22.Ng3 Bb8 23.Nge4 Nxe4 24.Bxe4 Rfe8 25.Rxd8 Rxd8 26.g3 Nf8 27.Rd1 Rxd1+ 28.Nxd1 Ne6 29.Kf2 Nc5 30.Bg2 Kf8 31.Bxc5+ bxc5 32.Nc3 Bc7 33.Ne4 Bb6 34.Nd6 Ba8 35.Ke3 Ke7 36.Nf5+ Kf6 37.g4 Bc7 38.Ng3 g6 39.Ne4+ Ke7 40.Nxc5 Bb6 41.Kd4 Kd6 42.b4 a5 43.a3 axb4 44.axb4 Bb7 45.Be4 Bc8 46.Bf3 g5 47.fxg5 hxg5 48.Be4 Bd7 49.Bd3 Be8 50.Ke4 Bd7 51.Nb3 Ke7 52.c5 Bc7 53.Nd4 Kf6 54.Ba6 Be5 55.Bb7 Bxd4 56.Kxd4 Ke6 57.Kc4 Ke5 58.Ba6 Be6+ 59.Kc3 Bd7 60.Bd3 Be6 61.b5 cxb5 62.Bxb5 Kd5 63.Kb4 Ke5 64.Bc4 1-0
2023.10.03 Titled Tue 3rd Oct Late
791860 GM Dardha, Daniel (2580) FM Elgersma, Onno (2266) 1-0
1.a3 a6 2.e3 h6 3.d4 Ra7 4.Ra2 Ra8 5.c4 Ra7 6.Nc3 e6 7.Ra1 Ra8 8.b4 Nf6 9.Ra2 Nc6 10.Rd2 Ne7 11.d5 Ng6 12.Bb2 e5 13.Bd3 d6 14.h4 a5 15.h5 Ne7 16.f4 Ng4 17.Qf3 axb4 18.axb4 c6 19.c5 cxd5 20.Bb5+ Bd7 21.Qxg4 f5 22.Qe2 d4 23.fxe5 dxc3 24.Bxc3 d5 25.e6 Bxb5 26.Qxb5+ Nc6 27.Qxb7 Ne7 28.Qb5+ Nc6 29.e4 Qc8 30.exd5 Be7 31.Bxg7 Rg8 32.d6 Qxe6+ 33.Re2 Rxg7 34.Qxc6+ Qd7 35.Qxa8+ Qd8 36.Qa1 Rh7 37.Qh8+ Kd7 38.Qxd8+ Bxd8 39.Nf3 Bf6 40.Re7+ Kc6 41.Rxh7 Bg7 42.Kf1 Bf8 43.Ke2 Bg7 44.Rd1 Bf8 45.Rf7 Bg7 46.Rxf5 Kb5 47.Nd4+ Kc4 48.Rf7 Bh8 49.d7 Bf6 50.Rxf6 Kxb4 51.Rxh6 Kc3 52.Nf3 Kc2 53.Rhd6 Kc3 54.c6 Kc4 55.c7 Kb5 56.d8=Q Ka5 57.R1d4 Kb5 58.Kd3 Ka5 59.Kc3 Kb5 60.Rb4+ Kc5 61.c8=Q# 1-0
2023.10.03 Titled Tue 3rd Oct Late
792390 FM Elgersma, Onno (2266) CM Ardila, Oscar Humberto (1979) 0-1
1.e4 e5 2.Nf3 Nf6 3.Nxe5 d6 4.Nf3 Nxe4 5.d3 Nf6 6.d4 Bg4 7.Bd3 Be7 8.h3 Bh5 9.Bg5 O-O 10.Nbd2 Nd5 11.Bxe7 Qxe7+ 12.Qe2 Re8 13.Qxe7 Rxe7+ 14.Kf1 Nf4 15.g4 Nxd3 16.cxd3 Bg6 17.Kg2 Nc6 18.d5 Nb4 19.d4 Nxd5 20.Rae1 Rae8 21.Rxe7 Rxe7 22.Re1 Kf8 23.Rxe7 Kxe7 24.Kg3 Nb4 25.a3 Nd3 26.b3 f6 27.Nh4 Ke6 28.f4 Kd5 29.f5 Bf7 30.Nhf3 c5 31.dxc5 dxc5 32.h4 Ne5 33.g5 Nxf3 34.Nxf3 Ke4 35.h5 Bxh5 0-1
2023.10.03 Titled Tue 3rd Oct Late
792156 FM Elgersma, Onno (2266) FM Hernandez Leon, A (2209) 1/2-1/2
1.e4 c5 2.Nf3 d6 3.Bb5+ Bd7 4.a4 Nf6 5.Nc3 a6 6.Bxd7+ Qxd7 7.O-O Nc6 8.Re1 e5 9.d3 b6 10.Bg5 Be7 11.Nd2 O-O 12.Nc4 Rab8 13.Ne3 b5 14.axb5 axb5 15.Bxf6 Bxf6 16.Ncd5 Bd8 17.c3 Ne7 18.Nxe7+ Bxe7 19.Nf5 g6 20.Qg4 Kh8 21.Ne3 Qxg4 22.Nxg4 Ra8 23.Ne3 Bg5 24.Nd5 b4 25.g3 bxc3 26.bxc3 Rxa1 27.Rxa1 Rb8 28.h4 Bd2 29.Ra2 Rb1+ 30.Kg2 Be1 31.Kf3 Rc1 32.c4 Rb1 33.g4 h6 34.g5 hxg5 35.hxg5 Kg7 36.Nf6 Rb8 37.Ra1 Bd2 38.Kg4 Rh8 39.Rd1 Bf4 40.Nd5 Rh2 41.Nxf4 exf4 42.Rd2 f6 43.gxf6+ Kxf6 44.Kxf4 Rh4+ 45.Ke3 g5 46.Ra2 Rh3+ 47.Ke2 g4 48.Ra8 g3 49.f4 Rh2+ 50.Ke3 g2 51.Rg8 Rh3+ 52.Ke2 Rh4 53.f5 Rh2 54.Kf3 Rh3+ 55.Kf4 Rh4+ 56.Kf3 Rh3+ 57.Kf2 Rxd3 58.Kxg2 Rd4 59.Rg6+ Ke7 60.Re6+ Kd7 61.Kf3 Rxc4 62.Kf4 d5 63.Ke5 Rxe4+ 64.Kxd5 Rxe6 65.fxe6+ Ke7 66.Kxc5 Kxe6 1/2-1/2
2023.10.03 Titled Tue 3rd Oct Late
791758 IM Alexikov, A (2209) FM Elgersma, Onno (2266) 0-1
1.e4 g6 2.d4 d6 3.c4 Bg7 4.Nc3 Nc6 5.Be3 e5 6.Nge2 exd4 7.Nxd4 Nf6 8.Be2 O-O 9.O-O a5 10.f3 Re8 11.Qd2 Ne5 12.Rad1 c6 13.Rfe1 Qc7 14.b3 Be6 15.Nxe6 Rxe6 16.h3 Rd8 17.f4 Ned7 18.Bf3 h5 19.g3 Rde8 20.Bf2 b6 21.Kh1 Nc5 22.Qc2 Qe7 23.Re2 Nfxe4 24.Nxe4 Nxe4 25.Bxe4 Rxe4 26.Rxe4 Qxe4+ 27.Qxe4 Rxe4 28.Bxb6 a4 29.bxa4 Rxc4 30.a5 d5 31.a6 Ra4 32.a7 Bf8 33.Rc1 c5 34.Bxc5 Bxc5 35.Rxc5 Rxa7 36.Rxd5 Rxa2 37.Rd3 Kg7 38.Kg1 Ra4 39.Kf2 h4 40.Kf3 hxg3 41.Kxg3 Kf6 42.Kf3 Ra1 43.Rb3 Rh1 44.Kg3 Rc1 45.Kf3 Kg7 46.Kg3 Kh6 47.Kg4 Rd1 48.Rb5 Rd3 49.f5 Rd4+ 50.Kg3 g5 51.Rb7 Kg7 52.Rb6 Rf4 53.Rb5 Kf6 0-1
2023.10.03 Titled Tue 3rd Oct Late
792569 CM Garmendia Vega, Gabriel (1967) FM Elgersma, Onno (2266) 1-0
1.e4 c6 2.d4 d5 3.exd5 cxd5 4.Bd3 Nc6 5.c3 Qc7 6.Ne2 Bd7 7.Bf4 Qc8 8.Nd2 e6 9.Nf3 Nf6 10.h3 Be7 11.O-O O-O 12.Re1 Ne4 13.Bxe4 dxe4 14.Ne5 Nxe5 15.Bxe5 f6 16.Bh2 Bc6 17.Ng3 f5 18.Ne2 Bg5 19.Bf4 Bf6 20.Be5 Qe8 21.Nf4 Rd8 22.Bxf6 Rxf6 23.Qb3 g5 24.d5 Bxd5 25.Nxd5 exd5 26.Qxb7 f4 27.Rad1 Qe6 28.Qxa7 f3 29.g4 Rh6 30.Qc7 Rd7 31.Qg3 Rh4 32.Qxf3 Qh6 33.Qf5 1-0
2023.09.24 TCh-BEL 2023-24
776917 Van Espen, E (2018) FM Elgersma, Onno (2259) 0-1
1.d4 Nf6 2.Bg5 d5 3.Nd2 e6 4.e3 c5 5.c3 Nc6 6.Ngf3 Bd6 7.Bd3 O-O 8.O-O Re8 9.Qe2 h6 10.Bh4 cxd4 11.exd4 e5 12.dxe5 Nxe5 13.Bxf6 Qxf6 14.Nxe5 Bxe5 15.Qf3 Qg5 16.Bb5 Bg4 17.Qd3 Be2 0-1
2023.09.16 Dutch League 2023-24
806896 IM Bosman, M (2368) FM Elgersma, Onno (2259) 1/2-1/2
1.d4 Nf6 2.c4 e6 3.g3 d5 4.Bg2 Bb4+ 5.Bd2 a5 6.Nf3 O-O 7.Qc2 c5 8.cxd5 cxd4 9.Nxd4 Qb6 10.Bxb4 axb4 11.e3 exd5 12.Nd2 Qa6 13.N2b3 Bg4 14.h3 Bh5 15.a4 Bg6 16.Qc7 Nbd7 17.Bf1 Bd3 18.Nb5 Rac8 19.Qf4 Bxf1 20.Rxf1 Ne4 21.N3d4 Ndc5 22.Ke2 Ne6 23.Qe5 Nxd4+ 24.Qxd4 Rc2+ 25.Kf3 Nd2+ 26.Kg2 Nxf1 27.Kxf1 Qe6 28.Kg2 Qf5 29.Rf1 Rc4 30.Nd6 Rxd4 31.Nxf5 Rd2 32.b3 g6 33.Nd4 Rc8 34.g4 Rb2 35.Rd1 Kg7 36.Kg3 h6 37.h4 Rc3 38.g5 hxg5 39.hxg5 Rc8 40.Rd3 Rc1 41.Nf3 Rf1 42.Rxd5 Rfxf2 43.Nd4 Kf8 44.Rb5 Ke7 45.Rxb7+ Kd6 46.Rb5 f5 47.gxf6 Rxf6 48.Rb6+ Ke7 49.Rb7+ Kd6 50.Rb6+ Ke5 1/2-1/2
2023.09.05 Titled Tue 5th Sep Late
821274 FM Elgersma, Onno (2259) IM Vaglio, J (2174) 1-0
1.c3 b5 2.d4 Bb7 3.Nf3 Nf6 4.Bf4 e6 5.e3 a6 6.Nbd2 h6 7.Bd3 d6 8.h3 g5 9.Bh2 Nbd7 10.e4 Bg7 11.Qe2 O-O 12.a4 bxa4 13.Rxa4 a5 14.O-O e5 15.Rfa1 c5 16.d5 Ne8 17.Nc4 Nb6 18.Rxa5 Nxc4 19.Rxa8 Bxa8 20.Bxc4 f5 21.exf5 Rxf5 22.Nd2 Rf8 23.Ne4 Nf6 24.Nxf6+ Qxf6 25.Bg3 Rb8 26.Ra7 Bb7 27.b4 cxb4 28.cxb4 Qf7 29.Qe4 Qc7 30.Bd3 Qb6 31.Qh7+ Kf8 32.Qf5+ Kg8 33.Qe6+ Kh8 34.Qg6 Kg8 35.Bxe5 dxe5 36.Qxb6 1-0
2023.09.05 Titled Tue 5th Sep Early
820764 Manukian, Ar (2196) FM Elgersma, Onno (2259) 1/2-1/2
1.e4 e6 2.d4 d5 3.e5 c5 4.c3 Qb6 5.Nf3 Bd7 6.a3 c4 7.Nbd2 Nc6 8.b4 cxb3 9.Nxb3 Na5 10.Nxa5 Qxa5 11.Bd2 Qc7 12.Bd3 Ne7 13.O-O Nc6 14.Qb1 Na5 15.h4 h6 16.h5 Be7 17.g4 b6 18.Kg2 Nc4 19.Bc1 Ba4 20.Nd2 Rc8 21.Nxc4 dxc4 22.Be4 Bc6 23.f3 O-O 24.a4 Rb8 25.Bxc6 Qxc6 26.Qe4 Rfc8 27.Qxc6 Rxc6 28.Ba3 Kf8 29.Rfb1 a6 30.f4 Bxa3 31.Rxa3 Ke7 32.Kf3 f6 33.Ke4 Rcc8 34.f5 fxe5 35.dxe5 Rd8 36.Ra2 Rd3 37.Rab2 Rg3 38.Kf4 Rxc3 39.Rxb6 Rxb6 40.Rxb6 exf5 41.gxf5 Rc1 42.Rb7+ Kf8 43.Rb8+ Ke7 44.Rb7+ Kf8 45.Rb8+ Ke7 46.Rb7+ 1/2-1/2
2023.09.05 Titled Tue 5th Sep Early
821054 FM Elgersma, Onno (2259) IM Dann, M (2477) 0-1
1.c3 Nf6 2.d4 b6 3.Nf3 Bb7 4.Bf4 g6 5.e3 Bg7 6.a4 a6 7.h3 d6 8.Be2 O-O 9.O-O Nbd7 10.Nbd2 Ne4 11.Nxe4 Bxe4 12.Nd2 Bb7 13.Bf3 Qc8 14.Bg3 c5 15.Qe2 Qc7 16.h4 Bxf3 17.Qxf3 h5 18.Ne4 Nf6 19.Ng5 Rac8 20.Qe2 Qb7 21.Rfe1 d5 22.Be5 Ne4 23.Bxg7 Kxg7 24.Nxe4 dxe4 25.Red1 Rfd8 26.dxc5 bxc5 27.b4 c4 28.Rd4 Rxd4 29.exd4 Qd5 30.Rb1 Rb8 31.b5 axb5 32.axb5 Rxb5 33.Rxb5 Qxb5 34.Qxe4 e6 35.Qe3 Qb1+ 36.Kh2 Qf5 37.g3 Kf6 38.Kg2 Qd5+ 39.Kh2 Qf5 40.Kg1 Ke7 41.Kf1 Kd6 42.Ke1 Kd5 43.f3 Qd3 44.Qe5+ Kc6 45.Qc5+ Kd7 46.Qb5+ Ke7 47.Qb4+ Kf6 48.Kf2 Qd2+ 49.Kf1 Qe3 50.Kg2 Qe2+ 51.Kg1 Qxf3 52.Kh2 Qf2+ 53.Kh3 Qf1+ 54.Kh2 Qf2+ 55.Kh3 Qg1 56.Qb7 Qf1+ 57.Kh2 Qe2+ 58.Kh3 Qe1 59.Qf3+ Kg7 60.Kh2 Qd2+ 61.Kh3 Qd3 62.Qxd3 cxd3 0-1
2023.09.05 Titled Tue 5th Sep Early
820033 CM Gaurav, Rajesh Zagade (2099) FM Elgersma, Onno (2259) 0-1
1.e4 g6 2.d4 Bg7 3.Nf3 a6 4.Be2 d6 5.h3 Nf6 6.Nbd2 O-O 7.O-O Nbd7 8.c3 b6 9.Re1 Bb7 10.Bf1 e6 11.Qc2 Qe7 12.e5 Nd5 13.exd6 cxd6 14.Ne4 h6 15.Bd2 N5f6 16.Nxf6+ Nxf6 17.Nh2 Kh7 18.Bd3 Rac8 19.Qb3 Qc7 20.Nf1 Qc6 21.f3 Qc7 22.Rad1 Kg8 23.Ng3 b5 24.Ne4 Nd5 25.a3 Bc6 26.Qa2 a5 27.Kh1 a4 28.Qb1 Nb6 29.Nf2 Nc4 30.Bc1 Bd5 31.Ng4 Kh7 32.Bf4 Qe7 33.Qc1 h5 34.Nf2 Qh4 35.Re2 Qe7 36.Bg5 f6 37.Bf4 f5 38.Kh2 Bf6 39.Bh6 Bg7 40.Bxg7 Kxg7 41.Qf4 h4 42.Bxc4 Bxc4 43.Ree1 g5 44.Qd2 Qf6 45.Qe3 Rce8 46.Nd3 Rf7 47.Nb4 Kg6 48.Rd2 e5 49.dxe5 Rxe5 50.Qf2 g4 51.fxg4 fxg4 52.Qxf6+ Rxf6 53.Rxe5 dxe5 54.hxg4 Kg5 55.Kh3 Be6 56.Nd3 Bxg4+ 57.Kh2 e4 58.Nc5 e3 59.Rd5+ Rf5 60.Rd8 e2 61.Nd3 Rf1 62.Re8 Rd1 63.Re5+ Kf6 64.Re4 Rxd3 65.Rf4+ Kg5 66.Re4 Rd1 0-1
2023.09.05 Titled Tue 5th Sep Late
822108 FM Zozek, S (2210) FM Elgersma, Onno (2259) 0-1
1.d4 g6 2.Nf3 Bg7 3.g3 d6 4.Bg2 Bf5 5.O-O Qc8 6.c4 Nf6 7.Nc3 Ne4 8.Qb3 O-O 9.Nh4 Nxc3 10.bxc3 Nc6 11.Nxf5 gxf5 12.Qc2 e6 13.e4 fxe4 14.Bxe4 f5 15.Bg2 Qd7 16.Re1 Rae8 17.Rb1 Na5 18.Qd3 b6 19.Ba3 Qa4 20.Bb4 Qxa2 21.Bxa5 Qxa5 22.Rxe6 Rxe6 23.Bd5 f4 24.Bxe6+ Kh8 25.Bd5 Qa2 26.f3 c5 27.Re1 cxd4 28.cxd4 Qb2 29.Re4 a5 30.gxf4 a4 31.f5 a3 32.f6 Bxf6 33.Re2 Bxd4+ 0-1
2023.09.05 Titled Tue 5th Sep Early
819058 FM Elgersma, Onno (2259) FM Burmakin, E (2179) 1-0
1.c3 e5 2.d4 exd4 3.cxd4 Nf6 4.Nc3 d5 5.Bg5 Be7 6.e3 c6 7.Bd3 Bg4 8.Qc2 Nbd7 9.Nge2 O-O 10.h3 Bh5 11.O-O Bg6 12.Rab1 Bxd3 13.Qxd3 Re8 14.Rfc1 Ne4 15.Bxe7 Qxe7 16.Nxe4 dxe4 17.Qc2 Nb6 18.b4 a6 19.a4 Nd5 20.b5 axb5 21.axb5 cxb5 22.Rxb5 Qd7 23.Qb3 Red8 24.Ng3 Qe6 25.Rxb7 g6 26.Qc2 Re8 27.Qb1 h5 28.Rc5 h4 29.Nxe4 Nxe3 30.Ng5 Qf6 31.Rxf7 Qxd4 32.Qxg6+ Kh8 33.Qh7# 1-0
2023.09.05 Titled Tue 5th Sep Late
821632 FM Elgersma, Onno (2259) GM Grigoriants, S RUS (2562) 0-1
1.e4 c5 2.Nf3 e6 3.g3 Nc6 4.Bg2 Nf6 5.Qe2 e5 6.O-O d6 7.Nc3 Be7 8.Nd5 O-O 9.c3 a5 10.a4 Nxd5 11.exd5 Nb8 12.d3 Nd7 13.Nd2 f5 14.Nc4 Nb6 15.Nxb6 Qxb6 16.f4 Bf6 17.Kh1 Bd7 18.fxe5 Bxe5 19.Qf2 Rae8 20.Be3 Qa6 21.d4 cxd4 22.Bxd4 Bxd4 23.Qxd4 Re5 24.b4 b6 25.bxa5 bxa5 26.Rae1 Rfe8 27.Rxe5 Rxe5 28.c4 Qc8 29.Qb6 Qc5 30.Qxc5 dxc5 31.d6 Kf7 32.Bd5+ Kf6 33.Rb1 Re8 34.Rb7 Rd8 35.Ra7 Ke5 36.Rxa5 Kxd6 37.Ra7 Rb8 38.a5 Rb2 39.a6 Ra2 40.Ra8 g5 41.a7 f4 42.gxf4 gxf4 43.Kg1 h5 44.h4 Kc7 45.Rf8 Rxa7 46.Rxf4 Ra2 47.Rf6 Bg4 48.Rc6+ Kd7 49.Rxc5 Kd6 50.Rc6+ Ke5 51.Rg6 Kf4 52.Kf1 Kg3 53.Ke1 Re2+ 54.Kf1 Rd2 55.Re6 Bxe6 56.Bxe6 Kxh4 57.c5 Rc2 0-1
2023.09.05 Titled Tue 5th Sep Early
819591 FM Elgersma, Onno (2259) CM Foerster-Yialamas, Lucas (2157) 0-1
1.c3 e5 2.d4 e4 3.Bf4 h5 4.h4 d5 5.e3 Bd6 6.Bxd6 Qxd6 7.c4 Bg4 8.Qb3 c5 9.Qxb7 Ne7 10.Nc3 cxd4 11.exd4 Qc6 12.Qb4 Nd7 13.Nh3 Rb8 14.Qa3 dxc4 15.Nf4 Nf5 16.Be2 Nxd4 17.Kf1 Nc2 18.Qxa7 Ra8 0-1
2023.09.05 Titled Tue 5th Sep Late
822430 FM Elgersma, Onno (2259) GM Kamsky, Gata (2641) 0-1
1.e4 g6 2.d4 Bg7 3.Nf3 d6 4.c3 Nf6 5.Bd3 O-O 6.h3 Nc6 7.O-O e5 8.Be3 Re8 9.Nbd2 a6 10.Re1 b6 11.a3 Bb7 12.Qc2 h6 13.Nf1 d5 14.dxe5 Nxe4 15.Bxe4 dxe4 16.Qxe4 Qc8 17.Qh4 g5 18.Qh5 Qf5 19.N1h2 Nxe5 20.Nxe5 Qxe5 21.Ng4 Qd5 22.f3 Re6 23.Bd4 Rae8 24.Rxe6 Rxe6 25.Bxg7 Kxg7 26.Nf2 Re2 27.Rf1 Rxb2 28.h4 Qf5 29.hxg5 Qxg5 30.Qh2 c5 31.Nh3 Qf6 32.Nf4 Kh7 33.Nh5 Qg5 34.Qc7 Qxg2# 0-1
2023.09.05 Titled Tue 5th Sep Late
821928 FM Elgersma, Onno (2259) FM Galaktionov, Artem (2321) 1/2-1/2
1.e4 c6 2.d4 g6 3.e5 d6 4.exd6 exd6 5.Nf3 Bg7 6.h3 Nf6 7.Be2 O-O 8.O-O Re8 9.c3 Bf5 10.Re1 Nbd7 11.a4 Ne4 12.Be3 Ndf6 13.Nbd2 Nd5 14.Nxe4 Nxe3 15.fxe3 Bxe4 16.Bd3 Bh6 17.Bxe4 Rxe4 18.Qd3 Qe7 19.Kf2 Re8 20.Re2 Rxe3 21.Rxe3 Qxe3+ 22.Qxe3 Bxe3+ 23.Kf1 Bf4 24.Re1 Rxe1+ 25.Kxe1 Kg7 26.Ke2 Kf6 27.Kd3 d5 28.c4 a5 29.cxd5 cxd5 30.b3 h5 31.Ng1 Bd6 32.Ne2 g5 33.Nc3 Ke6 34.Nb5 Bf4 35.Nc3 f5 36.Ne2 Bd6 37.Ke3 h4 38.Kf3 Bb4 39.Ke3 Kf6 40.Nc1 Bd6 41.Nd3 g4 42.Nc1 f4+ 43.Kf2 Kf5 44.hxg4+ Kxg4 45.Ne2 Bb4 46.Ng1 Bc3 47.Nf3 Bb2 48.Kf1 h3 49.Ne5+ Kg3 50.gxh3 Bxd4 51.Nd3 f3 52.h4 Be3 53.h5 Kh4 54.Ne5 f2 55.h6 Bxh6 56.Kxf2 Kg5 57.Nf7+ Kg6 58.Nxh6 Kxh6 59.Ke3 Kg5 60.Kd4 Kf4 61.Kxd5 Ke3 62.Kc5 Kd3 63.Kb5 Kc3 64.Kxa5 Kxb3 65.Kb6 Kxa4 66.Kxb7 1/2-1/2
2023.09.05 Titled Tue 5th Sep Early
819372 FM Masruri, R (2299) FM Elgersma, Onno (2259) 1-0
1.d4 d6 2.e4 Nf6 3.Nc3 Nc6 4.Nge2 g6 5.f3 a6 6.Be3 b5 7.Qd2 Bb7 8.O-O-O Qd7 9.g4 O-O-O 10.Ng3 Kb8 11.h4 e5 12.d5 Nd4 13.Bxd4 exd4 14.Qxd4 Bg7 15.Qf2 c6 16.h5 h6 17.Kb1 Qc7 18.dxc6 Bxc6 19.Bd3 Nd7 20.Nce2 Ne5 21.Nd4 Bd7 22.c3 Qb6 23.Nge2 Ka8 24.Nf4 Rb8 25.Nd5 Qc5 26.b4 Nxd3 27.Rxd3 Qc4 28.Rhd1 Rhc8 29.Nb3 Re8 30.Nb6+ Rxb6 31.Qxb6 Qc6 32.Qxc6+ Bxc6 33.Rxd6 1-0
2023.09.05 Titled Tue 5th Sep Late
821695 FM Kubatko, I (2257) FM Elgersma, Onno (2259) 0-1
1.e4 g6 2.d4 Bg7 3.Nc3 d6 4.f4 a6 5.a4 c6 6.Nf3 d5 7.e5 Bg4 8.h3 Bxf3 9.Qxf3 h5 10.g4 e6 11.Bg2 hxg4 12.hxg4 Rxh1+ 13.Bxh1 Qh4+ 14.Ke2 Nh6 15.Bd2 Qxg4 16.a5 Nd7 17.Na4 Qxf3+ 18.Bxf3 O-O-O 19.Kd3 Nf5 20.Rh1 Rh8 21.Rxh8+ Bxh8 22.b3 Bg7 23.c4 Bf8 24.Bg4 Ne7 25.Bb4 Kd8 26.Nc5 Nxc5+ 27.Bxc5 Ke8 28.Bxe7 Bxe7 29.c5 Bh4 30.Kc2 Be1 31.Kd3 Bxa5 32.Be2 Be1 33.Bg4 Kf8 34.Bh3 Ba5 35.Ke3 Ke7 36.Kd3 Kd7 37.Ke3 Kc7 38.Kd3 b6 39.cxb6+ Bxb6 40.Bg4 c5 41.dxc5 Bxc5 42.Bf3 Kb6 43.Bd1 Ka5 44.Be2 Kb4 45.Kc2 a5 46.Bf3 Be3 47.Bd1 Bxf4 48.Kd3 Bxe5 0-1
2023.09.05 Titled Tue 5th Sep Early
820418 GM Bacrot, E (2660) FM Elgersma, Onno (2259) 1-0
1.e4 c6 2.Nf3 d5 3.d3 g6 4.e5 Bg7 5.d4 Bg4 6.Nbd2 e6 7.h3 Bxf3 8.Nxf3 h5 9.c3 Nd7 10.Bd3 Bh6 11.Bxh6 Nxh6 12.g4 Qb6 13.Qd2 O-O-O 14.Rg1 Ng8 15.Ng5 Rf8 16.b4 Qd8 17.Bxg6 fxg6 18.Nxe6 Qe7 19.Nxf8 Nxf8 20.O-O-O g5 21.gxh5 Ne6 22.h4 gxh4 23.Rg6 Qf7 24.Rdg1 h3 25.f4 Nxf4 26.Rf1 Rxh5 27.Rg4 h2 28.Rgxf4 h1=Q 29.Rxf7 Qe4 30.Rf8+ Kc7 31.Rxg8 Rh3 32.Re1 Qh7 33.Rg2 Rd3 34.Qc2 Qh6+ 35.Kb2 Rh3 36.Rge2 a5 37.e6 axb4 38.cxb4 Qf6 39.Qd2 Qf3 40.e7 Qa3+ 41.Ka1 Rd3 42.Qb2 1-0
2023.09.05 Titled Tue 5th Sep Early
818898 WFM Fernandez Bustamante, Leancy B. (2059) FM Elgersma, Onno (2259) 1/2-1/2
1.e3 Nf6 2.d4 g6 3.c4 Bg7 4.Nc3 O-O 5.Nf3 c5 6.Be2 cxd4 7.exd4 d5 8.O-O Nc6 9.Bg5 Ne4 10.cxd5 Nxg5 11.dxc6 Nxf3+ 12.Bxf3 bxc6 13.Bxc6 Rb8 14.Qe2 Qxd4 15.Rfd1 Qb6 16.Nd5 Qxb2 17.Nxe7+ Kh8 18.Qf3 Qxa1 19.Rxa1 Bxa1 20.h4 Be5 21.g3 Be6 22.Bd5 Bxd5 23.Nxd5 Bg7 24.h5 Rbe8 25.Nf6 Re6 26.Ng4 gxh5 27.Ne3 h4 28.gxh4 Rg6+ 29.Kf1 Kg8 30.Nf5 Re8 31.Nxg7 Rxg7 32.Qf4 Rf8 33.Qf5 f6 34.h5 Rg5 35.Qe6+ Kg7 36.Qd7+ Rf7 37.h6+ Kg6 38.Qd3+ Kxh6 39.f4 Ra5 40.Qh3+ Kg7 41.Qg4+ Kf8 42.Qc8+ Kg7 43.Qg4+ Kh8 44.Qc8+ Kg7 45.Qg4+ 1/2-1/2
2023.09.05 Titled Tue 5th Sep Late
822234 IM Llorente Zaro, A (2436) FM Elgersma, Onno (2259) 0-1
1.e4 e6 2.d3 d5 3.Nd2 Nf6 4.Ngf3 c5 5.g3 Nc6 6.Bg2 Be7 7.O-O O-O 8.Re1 b5 9.exd5 exd5 10.d4 Bg4 11.dxc5 Bxc5 12.h3 Bh5 13.Nb3 Bb6 14.Be3 Re8 15.Qd2 Ne4 16.Qd3 Nb4 17.Qd1 Nxg3 18.Bxb6 Qxb6 19.c3 Nc6 20.Qxd5 Ne2+ 21.Rxe2 Rxe2 22.Qxh5 Qxf2+ 0-1
2023.09.05 Titled Tue 5th Sep Early
820711 FM Elgersma, Onno (2259) FM Valle Luis, Leo (2214) 1/2-1/2
1.c3 Nf6 2.d4 g6 3.Nd2 d5 4.e3 Bg7 5.Bd3 O-O 6.f4 c5 7.Ngf3 Nc6 8.O-O e6 9.Ne5 Nd7 10.Ndf3 cxd4 11.exd4 f6 12.Nxc6 bxc6 13.b3 c5 14.Ba3 Qc7 15.Qe2 Re8 16.Bb5 a6 17.Bxd7 Bxd7 18.Bxc5 e5 19.fxe5 fxe5 20.Qf2 e4 21.Ne5 Be6 22.b4 Rac8 23.Qe2 Qb7 24.a3 Rc7 25.Rf2 Qc8 26.Raf1 Bf5 27.h3 h5 28.Qe3 Kh7 29.g4 hxg4 30.hxg4 Bxg4 31.Rf7 Rxf7 32.Rxf7 Bh5 33.Nd7 Kg8 34.Qf4 e3 35.Bd6 e2 36.Rxg7+ Kxg7 37.Be5+ Rxe5 38.Qxe5+ Kh7 39.Nf6+ Kh6 40.Nxh5 gxh5 41.Qxe2 Qxc3 42.Qe6+ Kg7 43.Qe5+ Kg6 44.Qd6+ Kh7 45.Qd7+ Kg6 46.Qxd5 Qa1+ 47.Kg2 Qb2+ 48.Kf1 Qc1+ 49.Ke2 Qb2+ 50.Kf3 Qxa3+ 51.Ke4 Qxb4 52.Qg8+ Kf6 53.Qh8+ Kg5 54.Qg7+ Kh4 55.Qf6+ Kg4 56.Qf4+ Kh3 57.Qg5 h4 58.Qe3+ Kh2 59.Qf2+ Kh3 60.Qf3+ Kh2 61.Ke5 Qe7+ 62.Kf4 Qf7+ 63.Kg4 Qd7+ 64.Kxh4 Qxd4+ 65.Kg5 Qe5+ 66.Kg4 Qe6+ 67.Kh5 Qe8+ 68.Kh6 Qh8+ 69.Kg6 Qg8+ 70.Kh5 Qh8+ 71.Kg5 Qg7+ 72.Kh4 Qh6+ 73.Kg4 Qg6+ 74.Kh4 Qh6+ 75.Kg4 Qe6+ 76.Kh4 Qc4+ 77.Kg5 Qc5+ 78.Kh4 Qd4+ 79.Kh5 Qe5+ 80.Kg6 Qg3+ 81.Qxg3+ Kxg3 82.Kf5 Kf3 83.Ke5 Ke3 84.Kd5 Kd3 85.Kc5 Kc3 86.Kb6 Kb4 87.Kxa6 1/2-1/2
2023.09.05 Titled Tue 5th Sep Early
820214 FM Elgersma, Onno (2259) FM Dauner, Benedikt (2385) 1-0
1.c3 g6 2.d4 Bg7 3.e4 d6 4.Nf3 Nd7 5.h3 e6 6.Bd3 Ne7 7.O-O h6 8.Re1 b6 9.Nbd2 Bb7 10.Nf1 a6 11.Ng3 c6 12.a4 Qc7 13.Be3 c5 14.Qd2 Kf8 15.Rad1 Rd8 16.Bf4 g5 17.Be3 e5 18.Bb1 Nc6 19.Ba2 Ne7 20.b4 c4 21.Nh5 b5 22.Bb1 Nc6 23.h4 g4 24.Nh2 Nf6 25.Nxf6 Bxf6 26.Nxg4 Bxh4 27.Bxh6+ Ke8 28.Bg7 Rg8 29.Qh6 Be7 30.Qh7 Kd7 31.Qf5+ Ke8 32.Qh7 Kd7 33.dxe5 Kc8 34.axb5 axb5 35.exd6 Bxd6 36.e5 Be7 37.Bf5+ Kb8 38.f3 Qb6+ 39.Kf1 Rxd1 40.Rxd1 Rd8 41.Rxd8+ Qxd8 42.Qh8 Qxh8 43.Bxh8 Nxb4 44.cxb4 Bxb4 45.e6 fxe6 46.Bxe6 Bc6 47.Ne5 Be8 48.Nd7+ Kc7 49.Nf6 Bc6 50.Nd5+ Bxd5 51.Bxd5 Kd6 52.Be4 Ba5 53.Ke2 Kc5 54.g4 Kb4 55.g5 Kb3 56.g6 c3 57.g7 c2 58.Bxc2+ Kxc2 59.g8=Q 1-0
2023.08.15 Bruges Masters 2023
845012 De Boer, Bas (2155) FM Elgersma, Onno (2256) 1/2-1/2
1.d4 Nf6 2.c4 e6 3.Nf3 d5 4.Nc3 a6 5.cxd5 exd5 6.Bg5 Be6 7.e3 Nbd7 8.h3 c6 9.Bd3 Bd6 10.Bf4 Qc7 11.Qd2 h6 12.O-O O-O 13.Rfc1 Rfe8 14.a4 Rad8 15.b4 Nb6 16.Bxd6 Qxd6 17.b5 axb5 18.axb5 c5 19.dxc5 Qxc5 20.Na4 Qd6 21.Nxb6 Qxb6 22.Qa5 Qd6 23.Qc7 Qxc7 24.Rxc7 Rd7 25.Rac1 Kf8 26.R7c2 Ne4 27.Nd4 1/2-1/2
2023.08.12 25th HZ Open 2023
854187 FM Elgersma, Onno (2256) Hu, Yu A. (2108) 1-0
1.e4 c5 2.Nf3 d6 3.Bb5+ Bd7 4.a4 Nc6 5.Nc3 Nf6 6.O-O g6 7.Re1 Bg7 8.d3 O-O 9.h3 e5 10.Nd2 a6 11.Bc4 Nd4 12.Nd5 b5 13.Nxf6+ Qxf6 14.Bd5 Rab8 15.axb5 axb5 16.Nf1 Qh4 17.Ra7 Qd8 18.Ne3 Ne6 19.Ng4 Nf4 20.Bb3 Qc8 21.Ne3 Be6 22.Bxe6 Qxe6 23.h4 f5 24.exf5 gxf5 25.Qf3 Ng6 26.h5 Ne7 27.Qh3 Kh8 28.Bd2 Nc6 29.Rc7 Nd4 30.b4 f4 31.Ng4 Nxc2 32.h6 Bf6 33.Re4 Rg8 34.Nxf6 Qxf6 35.bxc5 b4 36.cxd6 b3 37.Bc3 b2 38.Bxe5 b1=Q+ 39.Kh2 Qxe5 40.Rxe5 Ne1 41.Ree7 Rg6 42.Rxh7+ Kg8 43.Qe6+ 1-0
2023.08.10 25th HZ Open 2023
854155 FM Elgersma, Onno (2256) FM Pham, Khoi (2361) 0-1
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 d6 5.c3 f5 6.exf5 Bxf5 7.d4 e4 8.Bg5 Be7 9.Bxe7 Qxe7 10.Nfd2 Nf6 11.Nf1 d5 12.Ne3 Be6 13.O-O O-O 14.Nd2 b5 15.Bc2 Rae8 16.a4 Nd8 17.axb5 axb5 18.Qe2 c6 19.Nb3 Bf7 20.Nc5 Bh5 21.Qd2 Ne6 22.Nf5 Qc7 23.Nxe6 Rxe6 24.Qg5 Bg6 25.Ne3 Nh5 26.Bd1 Nf4 27.Qg3 Qf7 28.Kh1 Bh5 29.Bxh5 Qxh5 30.h3 Qe2 31.Qg4 Qxg4 32.Nxg4 Nd3 33.b4 h5 34.Ne3 Rxf2 35.Rxf2 Nxf2+ 36.Kg1 Nd3 37.Ra7 Rf6 38.Rc7 Nc1 39.g4 g6 40.g5 Rf3 41.Ng2 Ne2+ 42.Kh2 Rxc3 43.Rc8+ Kf7 44.Rc7+ Ke6 45.Rg7 Kf5 46.Rf7+ Kxg5 47.Rf2 Nxd4 48.h4+ Kh6 0-1
2023.08.06 25th HZ Open 2023
854089 FM Elgersma, Onno (2256) GM Vrolijk, Liam (2558) 0-1
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.d3 b5 7.Bb3 d6 8.a3 Na5 9.Ba2 c5 10.Nc3 Be6 11.Bg5 O-O 12.b4 Nc6 13.Bxf6 Bxf6 14.Nd5 Rc8 15.c3 g6 16.Qd2 a5 17.bxc5 dxc5 18.Rab1 b4 19.Bc4 Bg4 20.Qe3 bxc3 21.Nxc3 Nd4 22.Nxd4 cxd4 23.Qg3 dxc3 24.Qxg4 Bg5 25.Qe2 Bd2 26.Rb5 Qe7 27.Rxa5 Ra8 28.Rb5 Rxa3 29.g3 Raa8 30.h4 Rab8 31.Ra5 Rb2 32.Raa1 Kg7 33.h5 Qg5 34.Rad1 Bf4 35.Qe1 c2 36.Ra1 Bd2 37.f4 Qxh5 38.Qxd2 c1=Q 39.Qxc1 Qh2# 0-1
2023.07.23 Science Park Open A 2023
878953 Kanis, Sierk (2112) FM Elgersma, Onno (2265) 1-0
1.d4 Nf6 2.c4 e6 3.Nc3 d5 4.cxd5 exd5 5.Bg5 c6 6.e3 h6 7.Bh4 Be6 8.Bd3 Nbd7 9.h3 Be7 10.Nge2 Nh5 11.Bxe7 Qxe7 12.Qc2 Nb6 13.O-O-O Nf6 14.Kb1 O-O-O 15.Rc1 Kb8 16.Ka1 Rhe8 17.Rhe1 Ka8 18.f3 Qb4 19.a3 Qa5 20.Ka2 Nc4 21.Nf4 Bc8 22.Bxc4 dxc4 23.Qd2 g5 24.Nfe2 Nd5 25.e4 Nb4+ 26.Ka1 Nd3 27.Red1 Nxc1 28.Qxc1 f5 29.d5 fxe4 30.fxe4 cxd5 31.exd5 Bd7 32.Nd4 b5 33.Na2 Qb6 34.Nb4 Re4 35.Qc3 a5 36.Nbc6 b4 37.Qxc4 Bxc6 38.Qxc6+ Qxc6 39.Nxc6 Rde8 40.Ka2 Re1 41.Rd4 Kb7 42.Nxa5+ Kb6 43.axb4 Rd8 44.Nc4+ Kb5 45.Kb3 Re2 46.Na3+ Ka6 47.d6 Rxg2 48.Kc4 h5 49.Kc5 g4 50.Kc6 Rc8+ 51.Kd7 Rb8 52.Kc7 Rb7+ 53.Kc8 gxh3 54.b5+ Ka7 55.Ra4+ Kb6 56.Ra6+ Kc5 57.Rc6+ Kd5 58.Kxb7 h2 59.Rc1 Rg7+ 60.Kb6 Kxd6 61.Rh1 Rg2 62.b4 Kd5 63.Kb7 Kd4 64.b6 Kc3 65.Ka7 Ra2 66.b7 Rxa3+ 67.Kb6 1-0
2023.07.22 Science Park Open A 2023
878942 FM Elgersma, Onno (2265) IM Van Delft, M (2369) 1/2-1/2
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.h3 e6 7.g4 Nfd7 8.g5 Nc6 9.Be3 Qc7 10.f4 b5 11.Bg2 Bb7 12.O-O Rc8 13.Rf2 Be7 14.f5 Nxd4 15.Bxd4 Ne5 16.g6 hxg6 17.fxe6 fxe6 18.Bxe5 dxe5 19.Qg4 Qb6 20.Qxg6+ Kd7 21.Nd5 Bxd5 22.exd5 Rcf8 23.Qxe6+ Qxe6 24.dxe6+ Kxe6 25.Re2 Bc5+ 26.Kh2 Rf2 27.Rxf2 Bxf2 28.Rd1 Rh4 29.Bb7 a5 30.Kg2 Rd4 31.Rxd4 Bxd4 32.c3 Be3 33.Bc6 b4 34.a3 bxa3 35.bxa3 Bc1 36.a4 Bd2 37.c4 Kd6 1/2-1/2
2023.07.21 Science Park Open A 2023
878934 Van Zutphen, J (2067) FM Elgersma, Onno (2265) 0-1
1.d4 d5 2.Bf4 Nf6 3.e3 e6 4.Nd2 c5 5.c3 Nc6 6.Bd3 Bd6 7.Bxd6 Qxd6 8.f4 O-O 9.Ngf3 cxd4 10.cxd4 b6 11.a3 Ne7 12.Ne5 Bb7 13.Qf3 Rac8 14.O-O h5 15.Kh1 Nf5 16.g4 hxg4 17.Nxg4 Nxg4 18.Qxg4 g6 19.Rf3 Kg7 20.Rg1 Rh8 21.Bxf5 exf5 22.Qxf5 Qf6 23.Qd3 Rh5 24.f5 Rch8 25.Rg2 g5 26.Rfg3 Qe7 27.f6+ Kxf6 28.Nf3 Qe4 29.Qf1 Ke7 30.Rxg5 Bc8 31.Re5+ Rxe5 32.Nxe5 Bf5 33.Kg1 Qxe3+ 34.Qf2 Qc1+ 35.Qf1 Qxf1+ 0-1
2023.07.20 Science Park Open A 2023
878918 IM Zwirs, Nico (2443) FM Elgersma, Onno (2265) 1-0
1.e4 c6 2.d4 d5 3.exd5 cxd5 4.Nf3 Nf6 5.Ne5 Nc6 6.c3 e6 7.Nd2 Nxe5 8.dxe5 Nd7 9.Nf3 Be7 10.Bd3 Qc7 11.Bf4 b6 12.O-O Bb7 13.a4 Nc5 14.Bb5+ Kf8 15.Re1 a6 16.Bf1 Ne4 17.Nd2 Nxd2 18.Qxd2 h5 19.Be3 h4 20.Bd4 g6 21.Qe3 Bc5 22.a5 Bxd4 23.cxd4 bxa5 24.Rec1 Qe7 25.Rxa5 Kg7 26.Rac5 Rhc8 27.Qb3 Rxc5 28.Rxc5 Bc8 29.Qb6 Qb7 30.Qd8 Bd7 31.Qf6+ Kg8 32.Rc3 Qb8 33.Qxh4 Qd8 34.Qf4 Rc8 35.Rh3 Qf8 36.Bxa6 Ra8 37.Qh4 Qg7 38.Ra3 g5 39.Qh5 f6 40.exf6 Qxf6 41.h4 Qxd4 42.Qxg5+ Qg7 43.Qh5 Be8 44.Qe2 Qh6 45.Qe5 Kf7 46.Qc7+ Kg8 47.Rg3+ Bg6 48.Qc6 Rf8 49.Bd3 Rf6 50.Bxg6 Rxg6 51.Qxe6+ 1-0
2023.07.19 Science Park Open A 2023
878911 FM Elgersma, Onno (2265) Baarslag, E (2112) 1-0
1.e4 c6 2.Nf3 d5 3.Nc3 dxe4 4.Nxe4 Nf6 5.Qe2 Nxe4 6.Qxe4 Nd7 7.d4 Nf6 8.Qf4 g6 9.Bd3 Bg7 10.O-O O-O 11.Re1 Bg4 12.Ne5 Be6 13.Qh4 Qc8 14.c3 Bf5 15.Bc4 b5 16.Bf1 a6 17.a4 Re8 18.Bh6 Bh8 19.h3 Rb8 20.axb5 axb5 21.Qf4 Be6 22.Be2 Nd5 23.Qg3 Bg7 24.Bxg7 Kxg7 25.Nd3 Nf6 26.Ra7 Rb7 27.Ra6 Bd5 28.Nc5 Rb8 29.Rea1 Nd7 30.Bg4 e6 31.Nd3 Rb7 32.h4 Qc7 33.Qe3 h6 34.Nb4 Nf6 35.Bf3 Rb6 36.Rxb6 Qxb6 37.Be2 Qc7 38.Nd3 Nd7 39.f4 Bc4 40.h5 Bxd3 41.Bxd3 gxh5 42.Qg3+ Kh8 43.Qh4 Rg8 44.Rf1 Qd8 45.Qxh5 Qf6 46.Be4 b4 47.Bxc6 bxc3 48.bxc3 Qg7 49.f5 e5 50.f6 1-0
2023.07.18 Science Park Open A 2023
878902 Manshanden, Nick (2059) FM Elgersma, Onno (2265) 0-1
1.d4 Nf6 2.c4 e6 3.Nc3 d5 4.cxd5 exd5 5.Bg5 c6 6.e3 Be7 7.Bd3 O-O 8.Nge2 Re8 9.O-O a5 10.Qc2 h6 11.Bh4 Na6 12.a3 Nc7 13.Rab1 Ne6 14.Rfd1 Ng5 15.f3 Bd6 16.Bf2 Qe7 17.Nf4 b5 18.a4 b4 19.Nce2 Bd7 20.b3 Rac8 21.Qd2 Ne6 22.Re1 c5 23.Nxe6 fxe6 24.Bg6 Red8 25.dxc5 Bxc5 26.Rbc1 e5 27.Ng3 Be6 28.Nf5 Qd7 29.g4 Bf7 30.Bxf7+ Qxf7 31.Qd3 Bf8 32.Qb5 e4 33.Qxa5 exf3 34.h3 Ne4 35.Qa6 Nc3 36.Kh1 h5 37.Rg1 hxg4 38.hxg4 Ra8 39.Qf1 Ne2 40.Rg3 Nxc1 41.Qxc1 Rac8 42.Qd1 Qe6 43.Rxf3 Qe4 44.Ng3 Rc1 0-1
2023.07.16 Science Park Open A 2023
889337 Merbis, M (2057) FM Elgersma, Onno (2265) 1-0
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 h6 7.Bh4 b6 8.Be2 Bb7 9.Bxf6 Bxf6 10.cxd5 exd5 11.b4 c6 12.O-O Re8 13.Qb3 a5 14.bxa5 Rxa5 15.Rab1 Nd7 16.Rfd1 Qe7 17.a4 Rea8 18.Bd3 g6 19.Re1 c5 20.Nxd5 Bxd5 21.Qxd5 cxd4 22.Bb5 Rd8 23.Nxd4 Bxd4 24.exd4 Nf6 25.Qe5 Qd6 26.Rbd1 Nd5 27.Rc1 Raa8 28.g3 Nb4 29.Rc7 Nd5 30.Rc6 Qb4 31.h4 Re8 32.Rxg6+ 1-0
2023.07.15 Science Park Open A 2023
889329 FM Elgersma, Onno (2265) Ritzerveld, Noah (2007) 1-0
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.d3 b5 7.Bb3 d6 8.a3 O-O 9.Nc3 Bg4 10.Be3 Qd7 11.h3 Bh5 12.Nd5 Na5 13.Nxe7+ Qxe7 14.Ba2 c6 15.Qd2 Nb7 16.Nh4 Bg6 17.f4 exf4 18.Bxf4 Nd7 19.Bg5 Qe8 20.Rf2 Nbc5 21.Raf1 Ne6 22.Be3 Nf6 23.Nf5 Bxf5 24.Rxf5 Qe7 25.Qf2 Kh8 26.Bd2 Nc5 27.Bc3 Ncd7 28.g4 Ne5 29.g5 Nfd7 30.h4 f6 31.Qh2 fxg5 32.hxg5 Rxf5 33.Rxf5 Rf8 34.g6 h6 35.Qf4 Rxf5 36.Qxf5 Qg5+ 37.Qxg5 hxg5 38.Be6 Nf6 39.Bxe5 dxe5 40.b4 Ne8 41.Kg2 Nf6 42.Kf3 g4+ 43.Bxg4 Kg8 44.Bc8 Kf8 45.Bb7 Nd7 46.Bxc6 Nb8 47.Bb7 Ke7 48.c4 Kf6 49.c5 Ke6 50.Kg4 1-0
2023.06.27 Titled Tue 27th Jun Early
911111 GM Bryakin, M (2451) FM Elgersma, Onno (2293) 1-0
1.Nf3 d5 2.e3 Nf6 3.c4 e6 4.b3 b6 5.Bb2 Bb7 6.Nc3 a6 7.cxd5 exd5 8.d4 Bd6 9.Be2 O-O 10.O-O Re8 11.Qc2 Nbd7 12.Rfd1 Qe7 13.Bf1 c5 14.dxc5 bxc5 15.Ne2 d4 16.exd4 Be4 17.Qd2 Rad8 18.Ng3 Bxg3 19.hxg3 Bxf3 20.gxf3 cxd4 21.Qxd4 Qe6 22.Bc4 Qf5 23.Qd3 Qh5 24.Re1 Ne5 25.Rxe5 Qxe5 26.Bxe5 Rxd3 27.Bxf6 Rd2 28.Bc3 Rc2 29.Bd4 a5 30.a4 Rd8 31.Be3 Rb8 32.g4 g6 33.Rd1 h5 34.Rd7 hxg4 35.fxg4 Rf8 36.Bh6 Rc8 37.Rxf7 Kh8 38.Bg5 Ra2 39.Bf6+ Kg8 40.Rc7+ Kf8 41.Rxc8# 1-0
2023.06.27 Titled Tue 27th Jun Early
909595 FM Elgersma, Onno (2293) WFM Zaichenko, D (2104) 1-0
1.Nf3 d5 2.b3 c5 3.Bb2 Nc6 4.e3 Nf6 5.Bb5 Bd7 6.O-O Rc8 7.d3 a6 8.Bxc6 Bxc6 9.Ne5 e6 10.Nd2 Bd6 11.a4 O-O 12.a5 Qc7 13.f4 Nd7 14.Nxc6 Qxc6 15.Qf3 e5 16.f5 Rce8 17.e4 f6 18.exd5 Qc7 19.Ne4 Rf7 20.g4 Nf8 21.h4 Be7 22.Bc1 Qd7 23.Be3 Rc8 24.Kg2 Kh8 25.c4 g6 26.h5 g5 27.h6 Qe8 28.d6 Bd8 29.Bxc5 Nd7 30.Be3 Qf8 31.c5 Qxh6 32.Rh1 Qg7 33.b4 Nb8 34.Bd2 Nc6 35.Bc3 Nd4 36.Bxd4 exd4 37.Nd2 Rf8 38.Nb3 Re8 39.Nxd4 Qf7 40.Ne6 Rxe6 41.fxe6 Qxe6 42.Qe4 Qf7 43.Rxh7+ Qxh7 44.Rh1 Qxh1+ 45.Kxh1 Kg7 46.Qxb7+ 1-0
2023.06.27 Titled Tue 27th Jun Early
910424 GM Bacrot, E (2672) FM Elgersma, Onno (2293) 1-0
1.e4 c6 2.Nf3 d5 3.d3 dxe4 4.dxe4 Qxd1+ 5.Kxd1 Nf6 6.Nfd2 h5 7.a4 h4 8.a5 g6 9.f3 Bh6 10.Nc4 Bxc1 11.Kxc1 O-O 12.Nc3 Kg7 13.Be2 Nh5 14.Rd1 f6 15.Bf1 Na6 16.Ne3 Nc7 17.Na4 b6 18.b3 Be6 19.Kb2 Rab8 20.Rd2 Nf4 21.Rad1 f5 22.g3 Nh5 23.exf5 gxf5 24.gxh4 Nf4 25.Rd4 Nfd5 26.Nxd5 Nxd5 27.axb6 axb6 28.Re1 Bf7 29.c4 b5 30.cxd5 bxa4 31.Rxa4 Bxd5 32.Bc4 Kf6 33.Bxd5 cxd5 34.Ra6+ Kf7 35.Re5 Rg8 36.Rxf5+ Ke8 37.Rg5 Rf8 38.Rg3 Kd7 39.Ra7+ Kd6 40.Rg6+ Kc5 41.Rc7+ Kb4 42.Rg4+ Kb5 43.f4 d4 44.Rxe7 Rfd8 45.Rg5+ Kb4 46.h5 Rb6 47.h6 Rxh6 48.Rb7+ Rb6 49.Rxb6# 1-0
2023.06.27 Titled Tue 27th Jun Early
911193 FM Elgersma, Onno (2293) FM Luukkonen, T (2279) 0-1
1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.Nc3 Nd4 5.Nxd4 exd4 6.e5 dxc3 7.exf6 cxd2+ 8.Bxd2 Qxf6 9.O-O Be7 10.Bc3 Qg5 11.Bd3 O-O 12.f4 Qc5+ 13.Kh1 f5 14.Qh5 g6 15.Qh6 Rf7 16.Rae1 b5 17.Re5 Qd6 18.Bxb5 Bf8 19.Qh3 Ba6 20.Bxa6 Qxa6 21.Rfe1 Qxa2 22.Qd3 d6 23.Re6 Bg7 24.Qf3 Raf8 25.h4 Qc4 26.Bxg7 Kxg7 27.c3 Rf6 28.Re7+ R8f7 29.Re8 Rf8 30.R8e7+ R8f7 31.R7e3 a5 32.h5 gxh5 33.Re8 a4 34.R1e3 Rg6 35.Qxh5 Qf1+ 0-1
2023.06.27 Titled Tue 27th Jun Early
910189 FM Elgersma, Onno (2293) FM Eilers, S (2300) 1-0
1.e4 d6 2.Nf3 Nf6 3.Nc3 e5 4.d4 Nbd7 5.Bc4 Be7 6.O-O c6 7.a4 h6 8.Re1 Qc7 9.h3 g5 10.Ba2 Nf8 11.a5 g4 12.hxg4 Bxg4 13.Qd3 Ng6 14.dxe5 dxe5 15.Qc4 Rh7 16.Nh2 Be6 17.Qa4 Bxa2 18.Rxa2 Kf8 19.Qc4 Rc8 20.Be3 b6 21.axb6 axb6 22.Ra6 b5 23.Qe2 Kg7 24.Ra7 Qd6 25.Qf3 Qe6 26.Ne2 Kh8 27.Ng3 Nh4 28.Qe2 Rg8 29.Nf3 Ng4 30.Nxh4 Bxh4 31.Nf5 Nxe3 32.Qxe3 Bg5 33.Qh3 Qg6 34.Rd1 Bf4 35.Rdd7 h5 36.Qf3 Qf6 37.Rd6 Qg5 38.Rdd7 Qf6 39.Rac7 Bc1 40.b3 Bb2 41.c4 bxc4 42.bxc4 Bd4 43.Rd6 Qg5 44.Rcxc6 h4 45.Rh6 h3 46.Rxh7+ Kxh7 47.Qxh3+ Qh6 48.Qxh6# 1-0
2023.06.27 Titled Tue 27th Jun Early
910728 FM Elgersma, Onno (2293) CM Marchesich, Giovanni (2217) 1-0
1.Nf3 Nf6 2.b3 c5 3.Bb2 d6 4.e3 e5 5.c4 Nc6 6.Nc3 Bf5 7.d3 g6 8.a3 a5 9.Be2 Bg7 10.O-O O-O 11.Nd2 Be6 12.Nde4 Nxe4 13.dxe4 f5 14.exf5 gxf5 15.Nd5 Ne7 16.f4 Bxd5 17.cxd5 e4 18.Bxg7 Kxg7 19.Qd2 Qb6 20.Bc4 a4 21.bxa4 Rxa4 22.Rab1 Qa7 23.Qb2+ Kf7 24.Be2 Rb8 25.Bh5+ Ng6 26.g4 c4 27.gxf5 Qxe3+ 28.Kh1 c3 29.Qg2 1-0
2023.06.27 Titled Tue 27th Jun Early
910505 FM Elgersma, Onno (2293) FM Lopez Gracia, F (2252) 1-0
1.Nf3 d5 2.b3 Nf6 3.Bb2 c6 4.e3 Bg4 5.h3 Bxf3 6.Qxf3 Nbd7 7.d4 e6 8.Nd2 Bd6 9.Bd3 Qe7 10.O-O e5 11.e4 dxe4 12.Nxe4 Nxe4 13.Qxe4 Nf6 14.Qh4 exd4 15.Rfe1 Be5 16.f4 1-0
2023.06.27 Titled Tue 27th Jun Early
909816 GM Makhnev, Denis (2469) FM Elgersma, Onno (2293) 1-0
1.f4 d5 2.Nf3 g6 3.g3 Bg7 4.Bg2 Nf6 5.O-O O-O 6.d3 c5 7.Qe1 Nc6 8.c3 Bf5 9.h3 Re8 10.g4 Bd7 11.e4 dxe4 12.dxe4 e5 13.f5 gxf5 14.gxf5 Kh8 15.Bg5 Rg8 16.Qh4 Qe7 17.Nbd2 b5 18.Rfe1 c4 19.Kh1 h6 20.Nf1 Kh7 21.Ne3 Qd6 22.Rad1 1-0
2023.06.25 HSG Open 2023
915625 FM Elgersma, Onno (2293) FM Roebers, J (2084) 1/2-1/2
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.d3 b5 7.Bb3 d6 8.a3 O-O 9.Nc3 Be6 10.Nd5 Bxd5 11.exd5 Nd4 12.Nxd4 exd4 13.a4 Nd7 14.Qg4 Bf6 15.axb5 Ne5 16.Qh3 axb5 17.Rxa8 Qxa8 18.f4 Ng6 19.g4 h6 20.g5 hxg5 21.fxg5 Be5 22.Bd2 Re8 23.Qg4 Re7 24.h4 Qe8 25.Rf2 Nf8 26.Kg2 g6 27.c3 Bg7 28.cxd4 Qb8 29.Bd1 Qa7 30.b4 Bxd4 31.Re2 Rxe2+ 32.Qxe2 Qa2 33.Be1 Qxd5+ 34.Qf3 Qa2+ 35.Qe2 Qxe2+ 36.Bxe2 Ne6 37.Kf3 d5 38.Kg4 Kf8 39.Bf3 c6 40.Bd2 Ke7 41.h5 gxh5+ 42.Kxh5 Be5 43.Kg4 Bd6 44.Bc3 Nc7 45.Kf5 Na6 46.Bf6+ Kf8 47.g6 fxg6+ 48.Ke6 Bxb4 49.Kd7 Nc5+ 50.Kxc6 Nxd3 51.Bxd5 Be7 52.Bxe7+ Kxe7 53.Kxb5 Nf4 54.Be4 g5 55.Kc5 Kf6 56.Kd4 g4 57.Ke3 Kg5 58.Ba8 Nh3 59.Bb7 Kh4 60.Bc8 g3 61.Bb7 Ng5 62.Bg2 Kg4 63.Ke2 Kf4 64.Kf1 Nf3 65.Ke2 Nd4+ 66.Kf1 Ke3 67.Bb7 Nf5 68.Kg2 Kf4 69.Bc6 Nh4+ 70.Kg1 Nf3+ 71.Kg2 Ne1+ 72.Kf1 Nf3 73.Kg2 Nh4+ 74.Kg1 Ke3 75.Bb7 1/2-1/2
2023.05.23 Titled Tue 23rd May Late
948478 CM Smieszek, W (2078) FM Elgersma, Onno (2309) 1-0
1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.Be3 a6 5.f3 b5 6.h4 h5 7.Nh3 Bxh3 8.Rxh3 Bg7 9.Qd2 Nbd7 10.Be2 c5 11.Nd5 Rc8 12.O-O-O Nxd5 13.exd5 c4 14.Qb4 Nf6 15.Kb1 Nxd5 16.Qd2 c3 17.Qd3 cxb2 18.Bd2 Qc7 19.f4 e6 20.g4 hxg4 21.Bxg4 b4 22.h5 Nc3+ 23.Bxc3 Qxc3 24.Qe2 Qc4 25.Qd2 gxh5 26.Be2 Qc6 27.d5 Qxd5 28.Rd3 Qa5 29.Rxd6 O-O 30.Bd3 Rc3 31.Rxa6 Qxa6 32.Bxa6 Ra8 33.Bd3 Rxa2 34.Rg1 Ra1+ 35.Kxb2 Rca3+ 36.Rxg7+ Kxg7 37.Qxb4 R1a2+ 38.Kc1 Ra1+ 39.Kd2 Ra4 40.Qc3+ Kf8 41.Qh8+ Ke7 42.Qe5 Rh1 43.Qc5+ Kf6 44.Qc6 Rxf4 45.Qxh1 h4 46.Ke3 e5 47.c4 Kg5 48.c5 Ra4 49.c6 Ra7 50.Qg1+ 1-0
2023.04.30 TCh-BEL 2022-23
975831 IM Vandenbussche, T (2447) FM Elgersma, Onno (2276) 1-0
1.e4 c6 2.d4 d5 3.e5 Bf5 4.Nc3 a6 5.g4 Bd7 6.Na4 e6 7.c3 Qc7 8.Be3 h5 9.gxh5 Nh6 10.Bd3 a5 11.Nf3 Na6 12.Rg1 b6 13.a3 c5 14.dxc5 bxc5 15.b4 d4 16.Bxh6 Rxh6 17.b5 c4 18.Be4 Rb8 19.bxa6 d3 20.Rb1 Rxh5 21.Kf1 Qa7 22.Rb7 Rxb7 23.axb7 Kd8 24.Qb1 Kc7 25.Nb6 Be8 26.Nc8 Qb8 27.Qb6+ Kd7 28.Bc6# 1-0
2023.04.25 Titled Tue 25th Apr Early
972835 IM Liu, Xiangyi (2377) FM Elgersma, Onno (2276) 1-0
1.Nf3 Nf6 2.g3 d5 3.Bg2 e6 4.O-O Be7 5.d3 O-O 6.Nbd2 c5 7.e4 Nc6 8.e5 Nd7 9.Re1 Qc7 10.Qe2 b5 11.h4 Bb7 12.h5 Rfc8 13.h6 g6 14.c3 b4 15.c4 Nb6 16.b3 a5 17.Rb1 a4 18.Nf1 axb3 19.axb3 Ra7 20.N1h2 Rca8 21.Ng4 Ra2 22.Qd1 Rd8 23.Re2 Ra5 24.cxd5 Nxd5 25.Bb2 Ra2 26.Rc2 Qd7 27.Ra1 Rda8 28.Rxa2 Rxa2 29.Nf6+ Bxf6 30.exf6 Qd8 31.Qb1 Qa5 32.Kh2 Nc3 33.Qc1 Nd4 34.Nxd4 cxd4 35.Bxb7 Qh5+ 36.Kg2 Qe5 37.Bxc3 Rxc2 38.Qxc2 dxc3 39.Qa2 Qb8 40.Be4 Kf8 41.d4 Qd8 42.Qa4 Qxf6 43.Qxb4+ Qe7 44.Qxc3 f5 45.Bf3 Qd6 46.Qe3 Kf7 47.Qe5 Qb6 48.Qg7+ Ke8 49.Qxh7 Qxb3 50.Qxg6+ 1-0
2023.04.25 Titled Tue 25th Apr Early
971589 FM Elgersma, Onno (2276) FM Derichs, R (2286) 1-0
1.Nf3 d5 2.b3 Bf5 3.Bb2 c6 4.g3 Nf6 5.Bg2 h6 6.O-O e6 7.d3 Be7 8.Nbd2 O-O 9.a3 a5 10.Ne1 Na6 11.Nef3 b5 12.Qe1 Bh7 13.e4 c5 14.Ne5 Qc7 15.f4 Rad8 16.g4 Nd7 17.Nxd7 Rxd7 18.f5 dxe4 19.Nxe4 exf5 20.gxf5 f6 21.Kh1 c4 22.Rg1 Kh8 23.bxc4 bxc4 24.Ng3 cxd3 25.cxd3 Nc5 26.Rc1 Qd8 27.Nh5 Bxf5 28.Nxg7 Nxd3 29.Qh4 Kh7 30.Nxf5 1-0
2023.04.25 Titled Tue 25th Apr Early
971897 WCM Tarnowska, A (1835) FM Elgersma, Onno (2276) 0-1
1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Nf6 5.Nxf6+ exf6 6.Nf3 Bd6 7.Be3 O-O 8.Qd2 Re8 9.O-O-O Be6 10.Kb1 b5 11.Bd3 Nd7 12.Nh4 Nb6 13.Nf5 a5 14.h4 a4 15.Rh3 Bf8 16.Rg3 Qd5 17.c4 Nxc4 18.Bxc4 Qxc4 19.Nxg7 Bxg7 20.Bh6 Qxa2+ 21.Kc1 Qa1+ 22.Kc2 Bf5+ 23.Kc3 b4+ 24.Kc4 Qa2+ 25.b3 Be6+ 26.d5 Bxd5+ 27.Kd4 Re4+ 28.Kc5 Ra5+ 29.Kb6 Rb5+ 30.Kc7 Re7+ 31.Kd8 Qxd2 32.Rxg7+ Kh8 33.Rxd2 Ra7 34.Kc8 Be6+ 35.Kd8 Rb8# 0-1
2023.04.25 Titled Tue 25th Apr Early
972679 FM Elgersma, Onno (2276) GM Donchenko, Alexa (2664) 0-1
1.Nf3 Nf6 2.e3 c5 3.b3 g6 4.Bb2 Bg7 5.d4 cxd4 6.Nxd4 O-O 7.c4 b6 8.Be2 Bb7 9.O-O Nc6 10.Nd2 Rc8 11.N2f3 Qc7 12.Rc1 Rfd8 13.Qc2 Qb8 14.Rfd1 Nb4 15.Qd2 Na6 16.b4 Ne4 17.Qe1 Nc7 18.a3 Qa8 19.Bf1 Ne8 20.Ba1 N8f6 21.h3 d6 22.Nb5 a6 23.Nbd4 Nd7 24.Be2 Ne5 25.Nxe5 Bxe5 26.Nf3 Bxa1 27.Rxa1 d5 28.Rac1 dxc4 29.Rxd8+ Rxd8 30.Bxc4 Nd6 31.Be2 Bxf3 32.Bxf3 Qb8 33.Qe2 Rc8 34.Rd1 Qa7 35.e4 a5 36.e5 Nf5 37.e6 f6 38.Rd7 Qb8 39.g3 axb4 40.axb4 Rc3 41.Be4 Nxg3 42.fxg3 Qxg3+ 43.Bg2 Rc1+ 44.Rd1 Qe5 45.Qd2 Rxd1+ 46.Qxd1 Kg7 47.Qd7 Qe3+ 48.Kf1 Qf4+ 49.Ke2 Qxb4 50.Bd5 h5 51.Qe8 Kh6 52.Qc6 b5 53.Qc1+ Kg7 54.Qc6 Qb2+ 55.Ke3 Qe5+ 56.Kd3 b4 57.Qd7 Qc3+ 58.Ke2 Qc5 59.Kd3 Kh6 60.Qc6 Qf2 61.Qc1+ Kg7 62.Qe3 Qf5+ 63.Be4 Qb5+ 64.Kd2 b3 65.Qg3 g5 66.Qf3 b2 67.Qxh5 Qb4+ 68.Ke3 Qxe4+ 69.Kxe4 b1=Q+ 70.Kd5 Qf5+ 71.Kd4 Qxe6 72.h4 Qe5+ 73.Kd3 Qg3+ 74.Kd2 Qxh4 75.Qe2 Qd4+ 76.Kc2 g4 77.Qxe7+ Kg6 78.Qe2 Qf4 79.Qd3+ Qf5 80.Kd2 Qxd3+ 81.Kxd3 Kf5 82.Ke2 Kf4 83.Kf1 g3 84.Kg1 Kf3 85.Kf1 Kg4 86.Kg1 Kh3 87.Kh1 f5 88.Kg1 g2 89.Kf2 Kh2 0-1
2023.04.25 Titled Tue 25th Apr Early
972181 FM Elgersma, Onno (2276) GM Wagner, De (2588) 1-0
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Bc5 6.d3 d6 7.a3 h6 8.Nc3 O-O 9.Be3 Bxe3 10.fxe3 Ne7 11.Ne2 Ng6 12.Ng3 Be6 13.d4 c6 14.c3 Re8 15.Qd2 Bc4 16.Rfe1 d5 17.exd5 Qxd5 18.e4 Qa5 19.Bc2 Rad8 20.Rad1 Qb6 21.b4 a5 22.Kh1 axb4 23.axb4 Qc7 24.Qf2 Ng4 25.Qd2 Ra8 26.Ra1 Rxa1 27.Rxa1 b5 28.Qe1 Qe7 29.h3 Nf6 30.Nf5 Qf8 31.Ra7 Ra8 32.Rxa8 Qxa8 33.Nxe5 Nxe5 34.dxe5 Nd7 35.Qg3 g6 36.Nxh6+ Kg7 37.Nf5+ Kg8 38.Qg5 Qa1+ 39.Kh2 Qxc3 40.Qd8+ Nf8 41.Nh6+ Kg7 42.Ng4 Ne6 43.Qf6+ Kf8 44.Nh6 1-0
2023.04.25 Titled Tue 25th Apr Early
971436 CM Tulchynskyi, Feliks (2210) FM Elgersma, Onno (2276) 1-0
1.e4 d6 2.d3 Nf6 3.Nf3 c5 4.h3 Nc6 5.Be3 e5 6.Nc3 Be7 7.Qd2 Be6 8.Ng5 Bd7 9.f4 Nd4 10.f5 b5 11.Nd1 d5 12.c3 Nc6 13.Qc2 Rc8 14.g4 d4 15.Bd2 dxc3 16.bxc3 b4 17.Nf3 bxc3 18.Bxc3 Nd4 19.Qf2 c4 20.Nxe5 Nb5 21.Nxc4 Nxc3 22.Nxc3 Bc5 23.Qd2 Bd4 24.Rc1 Qc7 25.Ne2 Bc5 26.Bg2 O-O 27.d4 Be7 28.e5 Ne8 29.Nd6 Qb6 30.Nxc8 Bxc8 31.Rxc8 Bb4 32.Nc3 Qa5 33.O-O Nc7 34.Rxf8+ Kxf8 35.Rc1 Nb5 36.Nd5 g6 37.Qxb4+ 1-0
2023.04.25 Titled Tue 25th Apr Early
972477 IM Szpar, Milosz (2447) FM Elgersma, Onno (2276) 0-1
1.e4 c6 2.d4 d5 3.e5 Bf5 4.h4 h5 5.c4 e6 6.Nc3 Nd7 7.cxd5 cxd5 8.Bd3 Bxd3 9.Qxd3 Ne7 10.Bg5 Qb6 11.Nf3 Nc6 12.O-O Rc8 13.Nxd5 exd5 14.e6 Nf6 15.exf7+ Kxf7 16.Qf5 Re8 17.Rae1 Nxd4 18.Nxd4 Qxd4 19.Rxe8 Kxe8 20.Qe6+ Kd8 21.Rc1 Bc5 22.Be3 Re8 23.Bxd4 Rxe6 24.Bxc5 Rc6 25.Be3 Rxc1+ 26.Bxc1 Kd7 27.f3 d4 28.Kf2 Ke6 29.Bg5 Nd7 30.b3 Kd5 31.Ke2 Ne5 32.Bf4 Ng6 33.Bg3 Nf8 34.Bb8 a6 35.g4 g6 36.Bg3 Ne6 37.Kd2 Nc5 38.gxh5 gxh5 39.Bf2 Ne6 40.Bg3 Ng7 41.Bf4 Ne6 42.Bg3 b5 43.Kd3 Nc5+ 44.Kd2 Ne6 45.Kd3 Nc5+ 46.Kd2 a5 47.Bc7 a4 48.Kc2 axb3+ 49.axb3 Ne6 50.Bg3 Ng7 51.Bf4 Ne6 52.Bg3 Nd8 53.Kd3 Ne6 54.b4 Nd8 55.Bf2 Nc6 56.Be1 Nd8 57.Bd2 Ne6 58.f4 Ng7 59.Be1 Ne6 60.Bg3 Ng7 61.Bf2 Nf5 62.Be1 Ne7 63.Bf2 Nf5 64.Be1 Ng7 65.Bf2 Ne6 66.f5 Nf4+ 67.Kd2 Ke5 68.f6 Kxf6 69.Bxd4+ Kf5 70.Bf2 Ke4 71.Bg3 Nd5 72.Bd6 Kd4 73.Ke2 Ke4 74.Kd2 Kd4 75.Ke2 Ke4 76.Kf2 Nf6 77.Kg3 Ke3 78.Bc5+ Ke4 79.Kg2 Nd5 80.Kg3 Nf4 81.Bd6 Ne6 82.Kf2 Ng7 83.Be7 Nf5 84.Bg5 Nd4 85.Bf6 Nc6 86.Bc3 Ne7 87.Be1 Nd5 88.Ke2 Nf4+ 89.Kf2 Nd3+ 90.Ke2 Nxe1 91.Kxe1 Kf3 92.Kd2 Kg4 93.Kd3 Kxh4 94.Kd4 Kg4 95.Kc5 h4 96.Kxb5 h3 97.Ka6 h2 98.b5 h1=Q 99.b6 Qa8+ 100.Kb5 Qb8 101.Kc6 Kf5 102.b7 Ke5 103.Kb6 Kd6 104.Ka6 Kc6 105.Ka5 Qxb7 106.Ka4 Kc5 107.Ka3 Qb4+ 108.Ka2 Kc4 109.Ka1 Kc3 110.Ka2 Qb2# 0-1
2023.04.22 Dutch League 2022-23
981608 IM Geirnaert, S (2431) FM Elgersma, Onno (2276) 0-1
1.d4 Nf6 2.c4 e6 3.Nc3 d5 4.cxd5 exd5 5.Bg5 c6 6.e3 Be7 7.Bd3 O-O 8.Qc2 h6 9.Bf4 a5 10.h3 Na6 11.a3 Nc7 12.Nf3 Ne6 13.Be5 b5 14.O-O Bb7 15.e4 b4 16.exd5 cxd5 17.Nb5 Ne4 18.Nc7 Nxc7 19.Bxc7 Qc8 20.Rfc1 Qe6 21.Qa4 Rfc8 22.Bb5 Nc3 23.bxc3 Rxc7 24.Re1 Qd6 25.cxb4 Qb6 26.Bf1 axb4 27.Qb3 Qa5 28.axb4 Qxa1 29.Rxa1 Rxa1 30.g3 Rcc1 31.Nh2 Rcb1 32.Qe3 Bxb4 33.Qe8+ Bf8 34.Kg2 Rc1 35.h4 Bc6 36.Qe5 Ba4 37.h5 Bc2 38.Qxd5 Re1 39.f3 Re7 40.Ng4 Rb1 41.Ne5 Rb2 42.Kh3 Bb3 43.Qe4 Bc2 44.Qd5 Bb3 45.Qe4 Bc2 46.Qf4 Rb6 47.Bc4 Rf6 48.Qd2 Bf5+ 49.g4 Be6 50.Bd3 Bd5 51.Bc2 Ree6 52.f4 Ra6 53.Nd7 Ra3+ 54.Kh4 Rxf4 55.Bh7+ Kh8 56.Nxf8 Rf1 57.g5 hxg5+ 58.Kg4 Raf3 59.Qh2 Rf4+ 60.Qxf4 gxf4 61.Bd3 Rd1 0-1
2023.04.18 Titled Tue 18th Apr Early
978693 FM Elgersma, Onno (2276) IM Samunenkov, Ihor (2501) 0-1
1.Nf3 d5 2.b3 c5 3.Bb2 f6 4.e4 dxe4 5.Nh4 g6 6.Nc3 Qd4 7.Bb5+ Nc6 8.Qe2 e3 9.Nf3 exf2+ 10.Kd1 Qf4 11.Qxf2 Bg4 12.Nd5 Bxf3+ 13.Qxf3 Qxf3+ 14.gxf3 O-O-O 15.Bxc6 bxc6 16.Ne3 e5 17.Nc4 Ne7 18.f4 exf4 19.Bxf6 Rg8 20.Re1 Bg7 21.Bxe7 Bxa1 22.Bxd8 Rxd8 23.Re7 Bd4 24.Rxa7 Kb8 25.Rf7 g5 26.a4 Rc8 27.Ke2 h5 28.Kf3 Re8 29.a5 Re1 30.a6 g4+ 31.Kxf4 Rf1+ 0-1
2023.04.18 Titled Tue 18th Apr Early
978956 IM Bryant, J (2412) FM Elgersma, Onno (2276) 1-0
1.e4 c6 2.Nf3 d5 3.Nc3 dxe4 4.Nxe4 Nf6 5.Qe2 Qa5 6.Nd6+ Kd7 7.Ne5+ Kxd6 8.Nc4+ 1-0
2023.04.18 Titled Tue 18th Apr Early
978204 FM Elgersma, Onno (2276) WFM Zaichenko, D (2104) 1-0
1.Nf3 Nf6 2.c4 e6 3.g3 d5 4.Bg2 Be7 5.O-O O-O 6.d4 dxc4 7.Qc2 Bd7 8.Ne5 Nc6 9.Rd1 Nd5 10.Nxd7 Qxd7 11.Qxc4 Nb6 12.Qd3 Rad8 13.Be3 e5 14.dxe5 Qxd3 15.exd3 Nxe5 16.d4 Nec4 17.Bxb7 Bf6 18.Nc3 Nxb2 19.Rdc1 N6c4 20.Nd5 Nxe3 21.Nxf6+ gxf6 22.fxe3 Rfe8 23.Rc3 Na4 24.Rb3 Nb6 25.Rc1 Re7 26.Kf2 Kg7 27.Bg2 f5 28.Rc5 Kg6 29.Rbb5 Rde8 30.Rc3 Na4 31.Ra3 Nb6 32.Rc3 Na4 33.Rc6+ f6 34.Rb3 Nb6 35.h4 Nc8 36.Bf3 Nd6 37.Rbc3 Rb8 38.Rxc7 Rxc7 39.Rxc7 Rb2+ 40.Ke1 Rxa2 41.Rd7 Ne4 42.Bxe4 fxe4 43.Re7 f5 44.Re5 a5 45.Rb5 a4 46.Kf1 a3 47.Ra5 Ra1+ 48.Kg2 a2 49.Kh2 Kf6 50.d5 Ke5 51.Kg2 Kd6 52.Kh2 Ke5 53.Kg2 Re1 54.Rxa2 Rxe3 55.Ra7 Rd3 56.Rxh7 Kxd5 57.Rd7+ Kc4 58.Rc7+ Kb3 59.h5 Rd2+ 60.Kg1 e3 61.Re7 Rd3 62.h6 e2 63.Kf2 Rd6 64.Re3+ Kc4 65.Rxe2 Rxh6 66.Kf3 Kd5 67.Kf4 1-0
2023.04.18 Titled Tue 18th Apr Early
977960 FM Aydincelebi, Kagan (2280) FM Elgersma, Onno (2276) 1-0
1.e4 c6 2.d4 d5 3.exd5 cxd5 4.Bd3 Nc6 5.c3 Qc7 6.Ne2 Bg4 7.O-O e6 8.Nd2 Bd6 9.h3 Bh5 10.Nb3 Nf6 11.Bg5 Ne4 12.Bxe4 dxe4 13.Qd2 O-O 14.Bf4 Rad8 15.Bxd6 Qxd6 16.Nf4 Bg6 17.Nxg6 hxg6 18.Rfe1 f5 19.Qg5 e5 20.Rad1 exd4 21.Nxd4 Qf6 22.Qxf6 gxf6 23.Ne6 Rxd1 24.Rxd1 Re8 25.Nf4 Kf7 26.Kf1 g5 27.Rd7+ Re7 28.Rxe7+ Kxe7 29.Nd5+ Ke6 30.Ne3 Ne5 31.Ke2 f4 32.Nd1 Kd5 33.g3 f5 34.gxf4 gxf4 35.h4 Ng4 36.b3 f3+ 37.Kd2 f4 38.h5 Ke5 39.c4 Kf6 40.c5 Kg5 41.b4 Kxh5 42.b5 Ne5 43.Nc3 Nc4+ 44.Ke1 e3 45.c6 bxc6 46.bxc6 Kg4 47.Nd5 e2 48.c7 Nd6 49.Ne7 a5 50.c8=Q+ Nxc8 51.Nxc8 Kf5 52.Nd6+ Ke5 53.Nc4+ Kd4 54.Nxa5 Kc3 55.Nc6 Kb2 56.a4 1-0
2023.04.18 Titled Tue 18th Apr Early
978847 FM Elgersma, Onno (2276) FM Fernandez Siles, L (2222) 1-0
1.Nf3 Nf6 2.b3 g6 3.Bb2 Bg7 4.e3 O-O 5.d4 d6 6.c4 Ne4 7.Nbd2 Nxd2 8.Qxd2 Nd7 9.Be2 f5 10.O-O Nf6 11.d5 c5 12.dxc6 bxc6 13.Rfd1 a5 14.c5 d5 15.Qc2 a4 16.Ne5 a3 17.Bd4 Qc7 18.b4 Ne4 19.f4 g5 20.Bf3 Be6 21.Rab1 g4 22.Bxe4 dxe4 23.b5 cxb5 24.Rxb5 Rfd8 25.Rdb1 Bd5 26.h3 g3 27.Qe2 Ra4 28.Qe1 Bxa2 29.Ra1 Bc4 30.Rb6 a2 31.Qxg3 e6 32.c6 Rxd4 33.Rb7 Rd1+ 34.Rxd1 a1=Q 35.Rxc7 Qxd1+ 36.Kh2 1-0
2023.04.18 Titled Tue 18th Apr Early
978602 GM Nagy, Ga1 (2464) FM Elgersma, Onno (2276) 1-0
1.d4 Nf6 2.Nc3 d5 3.Bf4 e6 4.Nb5 Na6 5.e3 Be7 6.h4 O-O 7.Nf3 c5 8.c3 Bd7 9.a4 Ne4 10.Bd3 f5 11.Ne5 Be8 12.h5 Nb8 13.f3 Nd6 14.dxc5 Nxb5 15.Bxb5 Bxc5 16.Bxe8 Qxe8 17.c4 dxc4 18.Rc1 Nc6 19.Rxc4 Rd8 20.Qe2 Nxe5 21.Bxe5 b6 22.h6 g6 23.O-O Rd5 24.Bg7 Rf7 25.b4 Bf8 26.Bxf8 Qxf8 27.e4 fxe4 28.Qxe4 Qxh6 29.Rc8+ Kg7 30.Qxe6 Qd2 31.Rf2 Qd1+ 32.Kh2 Qd4 33.Qe1 Re5 34.Qc3 Qh4+ 35.Kg1 Qf6 36.Rc6 Re1+ 37.Qxe1 Qxc6 38.b5 Qc5 39.Kh1 Re7 40.Qa1+ Qe5 41.Qxe5+ Rxe5 42.Rc2 Kf6 43.Rc7 Re7 44.Rc6+ Re6 45.Rc8 Re1+ 46.Kh2 Ra1 47.Rc6+ Kg5 48.Rc7 Rxa4 49.Rxh7 Rb4 50.Rxa7 Rxb5 51.Kg3 Rb1 52.Rb7 b5 53.f4+ Kf5 54.Rb6 b4 55.Rb5+ Kf6 56.Kg4 Rb2 57.g3 b3 58.Rb6+ Kf7 59.Kg5 Rc2 60.Rxb3 Rc5+ 61.Kg4 Kf6 62.Rb6+ Kf7 63.Kh4 Ra5 64.g4 Rc5 65.Rb7+ Kg8 66.Rd7 Ra5 67.Re7 Rb5 68.Re5 Rb6 69.Kg5 Kg7 70.Re7+ Kf8 71.Ra7 Rc6 72.Kh6 Rd6 73.g5 Rc6 74.Ra8+ Kf7 75.Kh7 Rc4 76.Ra7+ Kf8 77.Kxg6 Rxf4 78.Ra8+ Ke7 79.Rh8 Rf1 80.Kg7 Rf7+ 81.Kh6 Rf1 82.g6 Rh1+ 83.Kg7 Rf1 84.Ra8 Rg1 85.Ra2 Ke8 86.Re2+ Kd7 87.Kf7 Rf1+ 88.Kg8 Rg1 89.g7 Kd8 90.Re4 Kd7 91.Kf7 Rf1+ 92.Kg6 Rg1+ 93.Kf6 Rf1+ 94.Kg5 Kd6 95.g8=Q Rg1+ 96.Rg4 1-0
2023.04.18 Titled Tue 18th Apr Early
978364 FM Cherniaiev, Tykhon (2330) FM Elgersma, Onno (2276) 0-1
1.Nf3 d5 2.d4 Nf6 3.c4 e6 4.Nc3 a6 5.cxd5 exd5 6.Bg5 Be6 7.e3 Nbd7 8.Bd3 Bd6 9.O-O O-O 10.h3 c6 11.a3 h6 12.Bxf6 Nxf6 13.Qc2 Re8 14.Rfe1 a5 15.Rab1 Qe7 16.e4 dxe4 17.Nxe4 Nxe4 18.Bxe4 Qf6 19.Rbd1 Rad8 20.d5 Bxd5 21.Bxd5 Rxe1+ 22.Rxe1 cxd5 23.Qd2 b6 24.Kh1 Bc5 25.b4 axb4 26.axb4 Bf8 27.Rc1 d4 28.Ne1 d3 29.Nxd3 Qd4 30.Rd1 Bxb4 31.Qe2 Bf8 32.Nb2 Qf6 33.Rxd8 Qxd8 34.Nc4 b5 35.Ne5 b4 36.Qc4 Qf6 37.f4 Qe6 38.Qd3 g6 39.Kh2 h5 40.Qf3 Bd6 41.Qb7 Bxe5 42.fxe5 Qxe5+ 43.Kh1 Qc3 44.Qa8+ Kg7 45.Qe4 b3 46.Kh2 b2 47.h4 Qc7+ 48.Kh3 Qc3+ 49.Kh2 Qf6 50.g3 Qf2+ 51.Kh3 Qf1+ 52.Kh2 b1=Q 53.Qe5+ Qf6 54.Qe2 Qfb2 55.Qg2 Qxg2+ 56.Kxg2 Qe4+ 57.Kh3 Qh1# 0-1
2023.04.18 Titled Tue 18th Apr Early
977659 FM Elgersma, Onno (2276) WFM Thomas, Anysia (2175) 1-0
1.e4 c5 2.Nf3 g6 3.c3 d5 4.e5 Bg7 5.d4 cxd4 6.cxd4 Nc6 7.Bb5 Qb6 8.Nc3 Bg4 9.Nxd5 Qd8 10.Nc3 e6 11.Bg5 Ne7 12.Bxc6+ bxc6 13.Ne4 h6 14.Nf6+ Kf8 15.Be3 Nd5 16.Nxd5 Qxd5 17.h3 Bxf3 18.Qxf3 Qxf3 19.gxf3 Ke7 20.Rc1 Rac8 21.Ke2 Rhd8 22.Rc4 Rd5 23.Rhc1 Kd7 24.b3 Bf8 25.Ra4 Rc7 26.Rc2 g5 27.Kd3 c5 28.Ke4 Bg7 29.f4 gxf4 30.Bxf4 cxd4 31.Rxc7+ Kxc7 32.Rxa7+ Kb6 33.Rxf7 d3 34.Rxg7 d2 35.Bxd2 Rxd2 36.Rg6 Rxf2 37.Rxe6+ Kc5 38.Rxh6 Rxa2 39.Rh8 Rb2 40.Rc8+ Kb6 41.e6 Kb7 42.Rc3 Re2+ 43.Kf5 1-0
2023.04.18 Titled Tue 18th Apr Early
977404 CM Rodriguez Lopez, A (2002) FM Elgersma, Onno (2276) 1/2-1/2
1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Nf6 5.Nxf6+ exf6 6.Bf4 Bd6 7.Bxd6 Qxd6 8.Nf3 O-O 9.Be2 Re8 10.O-O Bg4 11.c3 a5 12.h3 Bh5 13.Re1 Na6 14.Nh4 Bxe2 15.Rxe2 g6 16.Qc2 Rxe2 17.Qxe2 Nc7 18.Re1 Nd5 19.g3 Kg7 20.Qg4 Kh8 21.Ng2 f5 22.Qe2 Kg7 23.Qe5+ Qxe5 24.Rxe5 a4 25.a3 Ra6 26.Ne3 Nxe3 27.Rxe3 Rb6 28.Re2 Kf6 29.f4 h5 30.h4 Ra6 31.Kf2 Ra5 32.Ke3 Rd5 33.Kd3 Rb5 34.Kc2 Rd5 35.Re8 c5 36.Re5 Rxe5 37.dxe5+ Ke6 38.c4 Kd7 39.b3 axb3+ 40.Kxb3 Kc6 41.Ka4 Kb6 42.Kb3 Ka5 43.a4 Ka6 44.Ka3 Kb6 45.Kb3 Ka5 46.Ka3 Ka6 47.Kb3 Ka7 48.a5 Ka6 49.Ka4 b6 50.axb6 Kxb6 51.Kb3 Ka5 52.Ka3 Ka6 53.Ka4 Kb6 54.Kb3 Kb7 55.Ka3 Ka6 56.Ka4 Kb6 1/2-1/2
2023.04.01 Dutch League 2022-23
981586 FM Elgersma, Onno (2276) GM Smeets, J (2555) 1-0
1.e4 c6 2.Nf3 d5 3.Nc3 Bg4 4.h3 Bxf3 5.Qxf3 e6 6.g3 Nd7 7.d4 Ngf6 8.Bg2 Bb4 9.e5 Ng8 10.O-O Ne7 11.Ne2 Ba5 12.c3 O-O 13.h4 c5 14.h5 h6 15.Bh3 Rc8 16.a3 cxd4 17.cxd4 b5 18.g4 Kh8 19.Qd3 a6 20.Be3 Nc6 21.f4 Bb6 22.Bf2 Na5 23.Kh1 f6 24.Bh4 Qc7 25.Rac1 Qb8 26.Qg6 Rxc1 27.Rxc1 Qe8 28.exf6 Nxf6 29.Bxf6 Qxg6 30.hxg6 gxf6 31.f5 exf5 32.gxf5 Re8 33.Nf4 Bxd4 34.Rc7 Be5 35.Rh7+ Kg8 36.Bg2 1-0
2023.03.19 TCh-BEL 2022-23
1007656 Bezsilko, P (2148) FM Elgersma, Onno (2273) 0-1
1.e4 c6 2.Nf3 d5 3.Nc3 dxe4 4.Nxe4 Nf6 5.Ng3 h5 6.Bc4 h4 7.Ng5 hxg3 8.Bxf7+ Kd7 9.fxg3 e5 10.d4 Kc7 11.c3 Bd6 12.O-O Qe7 13.Re1 Bg4 14.Qb3 Nbd7 15.h3 Bh5 16.Bxh5 Rxh5 17.g4 Nxg4 18.Ne6+ Kc8 19.hxg4 Rh1+ 20.Kxh1 Qh4+ 21.Kg1 Qxe1+ 22.Kh2 g5 23.dxe5 Qxe5+ 0-1
2023.03.11 Dutch League 2022-23
1012557 De Mon, Gino (1949) FM Elgersma, Onno (2267) 0-1
1.d4 Nf6 2.c4 e6 3.Nf3 d5 4.Nc3 a6 5.cxd5 exd5 6.Bg5 Be6 7.Qb3 b5 8.Qc2 Nbd7 9.e3 Be7 10.Bd3 h6 11.Bf4 O-O 12.O-O c5 13.dxc5 Nxc5 14.Bf5 Rc8 15.a3 Nce4 16.Bxe6 fxe6 17.Qb3 Nxc3 18.bxc3 Ne4 19.Rfc1 Bf6 20.Nd4 Nc5 0-1
2023.01.31 Titled Tue 31st Jan Early
1053508 Manon Og, R (1999) FM Elgersma, Onno (2296) 1-0
1.e4 e6 2.d4 d5 3.Nd2 c5 4.Ngf3 cxd4 5.Nxd4 Nc6 6.Bb5 Bd7 7.Nxc6 bxc6 8.Bd3 Bd6 9.O-O Qc7 10.h3 e5 11.Qe2 Nf6 12.f4 O-O 13.fxe5 Bxe5 14.exd5 Rfe8 15.Qf3 cxd5 16.Nb3 a5 17.c3 a4 18.Nd4 a3 19.bxa3 Kh8 20.Bf5 Ne4 21.Bb2 Bh2+ 22.Kh1 Ng3+ 23.Kxh2 Nxf1+ 24.Kg1 Nd2 25.Qxd5 Bxf5 26.Nxf5 Qb6+ 27.Qd4 Qxd4+ 28.cxd4 Nc4 29.Bc3 Rxa3 30.Rc1 Rxa2 31.d5 f6 32.Bxf6 gxf6 33.Rxc4 h5 34.d6 Kh7 35.Rc7+ Kg6 36.Ne7+ Kg5 37.d7 Rd8 38.Nc6 Raa8 39.Nxd8 Rxd8 40.Kf2 Kf5 41.Kg3 Ke5 42.Kh4 Kf5 43.Ra7 Kg6 44.Kg3 Kf5 45.Kf3 Ke5 46.Ke3 f5 47.g3 1-0
2023.01.31 Titled Tue 31st Jan Early
1052260 FM Elgersma, Onno (2296) GM Albornoz Cabrera, Carlos Daniel (2576) 0-1
1.e4 c5 2.Nf3 Nc6 3.Bb5 d6 4.O-O Bd7 5.Re1 Nf6 6.c3 a6 7.Bf1 Bg4 8.h3 Bxf3 9.Qxf3 g6 10.d3 Bg7 11.Be3 O-O 12.Nd2 b5 13.Qd1 b4 14.d4 bxc3 15.bxc3 Qa5 16.Nc4 Qc7 17.d5 Na5 18.Qc2 Nxc4 19.Bxc4 Nd7 20.Bf1 Qa5 21.Rac1 Rfb8 22.f4 Qa3 23.Bc4 Nb6 24.Qd3 Nxc4 25.Qxc4 Rb2 26.e5 Rab8 27.e6 Qxa2 28.exf7+ Kf8 29.Qe4 Re2 30.f5 Rbb2 31.Rxe2 Rxe2 32.fxg6 hxg6 33.Rf1 Qd2 34.Bxd2 Rxe4 35.Ra1 Re2 36.Bg5 Bxc3 37.Rxa6 Re5 38.Bf4 Rxd5 39.Ra3 Be5 0-1
2023.01.31 Titled Tue 31st Jan Early
1052774 Yuan, Qingyu (2373) FM Elgersma, Onno (2296) 1-0
1.e4 c6 2.d4 d5 3.exd5 cxd5 4.Bd3 Nc6 5.c3 Qc7 6.h3 Nf6 7.Nf3 g6 8.O-O Bf5 9.Re1 Bg7 10.Bxf5 gxf5 11.Nh4 f4 12.Qf3 Rg8 13.Bxf4 Qd7 14.Nd2 O-O-O 15.Bh2 Bh6 16.Nb3 Ne4 17.Nf5 Bf8 18.Qf4 e6 19.Nh6 Bxh6 20.Qxh6 Rg6 21.Qe3 Rdg8 22.g3 f5 23.Nc5 Qf7 24.Nd3 h5 25.h4 Rg4 26.Kh1 Ne7 27.Rg1 Ng6 28.f3 f4 29.Nxf4 Nxf4 30.fxg4 Nh3 31.Rgf1 Qg6 32.g5 e5 33.dxe5 Qc6 34.Qd4 Re8 35.Rae1 Nef2+ 36.Rxf2 Nxf2+ 37.Qxf2 d4+ 38.Qg2 dxc3 39.Qxc6+ bxc6 40.bxc3 Kc7 41.g4 hxg4 42.Bg3 Kd7 43.Kg2 Ke6 44.Rd1 Rf8 45.Rd6+ Ke7 46.Rf6 Rd8 47.Rf2 Rd3 48.g6 1-0
2023.01.31 Titled Tue 31st Jan Early
1053344 FM Elgersma, Onno (2296) WGM Heinemann, Josefine (2336) 1-0
1.Nf3 d5 2.e3 Nf6 3.b3 c5 4.Bb2 Nc6 5.Bb5 e6 6.O-O Bd6 7.Ne5 Bd7 8.Bxc6 Bxc6 9.d3 Qc7 10.f4 O-O-O 11.Nd2 Rhg8 12.Nxc6 Qxc6 13.Qf3 Qc7 14.c4 Qe7 15.Rac1 h5 16.h3 h4 17.Nb1 Kb8 18.Nc3 dxc4 19.bxc4 Bc7 20.Rcd1 g6 21.Nb5 Nh5 22.Nxc7 Kxc7 23.d4 Ng3 24.Rfe1 Rd7 25.d5 Kc8 26.e4 Rgd8 27.a4 f6 28.a5 e5 29.fxe5 fxe5 30.Qg4 Kb8 31.Bc1 Qf7 32.Be3 Rc8 33.Rb1 Rdd8 34.Qg5 Rf8 35.Qxe5+ Ka8 36.a6 b6 37.d6 Rce8 38.Qd5+ Qxd5 39.exd5 Rd8 40.Bg5 Rxd6 41.Be7 Rdd8 42.Bxf8 Rxf8 43.d6 Kb8 44.d7 Kc7 45.Re8 1-0
2023.01.31 Titled Tue 31st Jan Early
1052579 FM Delorme, Al (2292) FM Elgersma, Onno (2296) 1/2-1/2
1.e4 c6 2.d4 d5 3.exd5 cxd5 4.Nf3 Nc6 5.Bb5 e6 6.c3 Nf6 7.O-O Bd7 8.Bxc6 Bxc6 9.Ne5 Bd6 10.Bf4 O-O 11.Nd2 Be8 12.Re1 a5 13.a4 Qb6 14.Qb3 Qa6 15.c4 dxc4 16.Ndxc4 Bb4 17.Red1 Nd5 18.Bg3 b5 19.axb5 Bxb5 20.Rdc1 Rac8 21.Na3 Be2 22.Nc2 Bd2 23.Nd7 Bxc1 24.Nxf8 Kxf8 25.Rxc1 Bd3 26.Bd6+ Qxd6 27.Qxd3 Nb4 28.Qa3 Kg8 29.b3 Qc6 30.Qxa5 Nxc2 31.h3 h6 32.b4 Qc3 33.Qa6 Rc7 34.b5 Qd2 35.Rb1 Nxd4 36.b6 Rc1+ 37.Rxc1 Qxc1+ 38.Kh2 Qf4+ 39.Kg1 Nc6 40.Qa8+ Nb8 41.Qb7 g6 42.Qc8+ Kg7 43.Qc7 e5 44.Qxb8 Qc1+ 45.Kh2 Qf4+ 46.Kg1 Qc1+ 47.Kh2 Qf4+ 48.Kg1 1/2-1/2
2023.01.31 Titled Tue 31st Jan Early
1052884 FM Aung Thant Zin (2268) FM Elgersma, Onno (2296) 0-1
1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Nf6 5.Nxf6+ exf6 6.Nf3 Bd6 7.Bd3 O-O 8.h3 Re8+ 9.Be3 Na6 10.O-O Nb4 11.Be2 Bf5 12.Ne1 Bc7 13.c3 Qd6 14.g3 Rxe3 15.fxe3 Qxg3+ 16.Ng2 Qh2+ 17.Kf2 Bg3+ 18.Kf3 Qxh3 19.e4 Bh4+ 20.Kf4 Bg5# 0-1
2023.01.31 Titled Tue 31st Jan Early
1053146 FM Elgersma, Onno (2296) IM Sokolovsky, Yahli (2431) 0-1
1.e4 g6 2.d4 d6 3.Nf3 a6 4.Bc4 e6 5.O-O Bg7 6.Re1 Nf6 7.Bd3 O-O 8.c3 c5 9.Nbd2 cxd4 10.cxd4 Nc6 11.h3 b6 12.Nf1 Bb7 13.Ng3 h6 14.Be3 Rc8 15.Qd2 Kh7 16.b4 a5 17.a3 Qd7 18.Rac1 axb4 19.axb4 Na7 20.h4 h5 21.Bg5 Kg8 22.Bh6 Bxh6 23.Qxh6 Ng4 24.Qg5 Qd8 25.Qf4 Rxc1 26.Rxc1 Nc6 27.b5 e5 28.Qd2 Nxd4 29.Nxd4 exd4 30.Qf4 Qxh4 31.Rc7 Bc8 32.Qxd6 Be6 33.Qf4 Ra8 34.Rc1 Ra3 35.Be2 Qh2+ 36.Kf1 Rxg3 37.Bxg4 Qxg2+ 38.Ke2 Bxg4+ 39.Kd2 Rf3 40.Rc8+ Bxc8 0-1
2023.01.31 Titled Tue 31st Jan Early
1052131 CM Gottstein, C (2113) FM Elgersma, Onno (2296) 0-1
1.Nf3 Nf6 2.d4 d5 3.e3 c5 4.c4 e6 5.Nc3 Nc6 6.a3 cxd4 7.exd4 dxc4 8.Bxc4 Be7 9.O-O O-O 10.h3 b6 11.Ne5 Bb7 12.Nxc6 Bxc6 13.Be3 Rc8 14.Qe2 Qd7 15.Rac1 Nd5 16.Nxd5 Bxd5 17.Bxd5 Qxd5 18.Rfd1 Bf6 19.Qa6 Qd7 20.a4 h6 21.a5 bxa5 22.Qxa5 Qb7 23.d5 Rxc1 24.Bxc1 exd5 25.Qxd5 Qa6 26.Qd6 Qe2 27.Qd2 Qe4 28.Qe3 Qa4 29.b3 Qa1 30.Re1 Qa2 31.Qf3 Qa6 32.Be3 Re8 33.Rd1 Rb8 34.Qd5 Qe2 35.Qd3 Qa2 36.Qb1 Qa3 37.Qf5 Qxb3 38.Rc1 Bb2 39.Rc8+ Rxc8 40.Qxc8+ Kh7 41.Qf5+ g6 42.Qd7 a5 43.Qa7 a4 0-1
2022.12.30 58th Groningen Open 2022
1083478 FM Elgersma, Onno (2291) Saketh, P (2030) 1/2-1/2
1.e4 e5 2.Nf3 Nf6 3.Nc3 Nc6 4.g3 Bc5 5.Bg2 d6 6.O-O Bg4 7.h3 Bh5 8.d3 Nd4 9.g4 Bg6 10.Na4 Nd7 11.Nxc5 dxc5 12.Nxd4 cxd4 13.Qf3 Qe7 14.Qg3 1/2-1/2
2022.12.29 58th Groningen Open 2022
1083461 FM De Winter, Arthur (2368) FM Elgersma, Onno (2291) 1-0
1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 dxe4 5.Nxe4 Be7 6.Bxf6 gxf6 7.Nc3 f5 8.g3 Qd6 9.Nf3 a6 10.Bg2 Nd7 11.Qe2 Rb8 12.O-O b5 13.Rfe1 b4 14.Nd1 Bb7 15.Ne3 Nb6 16.Nh4 Qd7 17.Bxb7 Rxb7 18.Qxa6 Rb8 19.Nf3 f4 20.Ne5 Qa4 21.Qxa4+ Nxa4 22.N3c4 fxg3 23.hxg3 Rb5 24.a3 b3 25.cxb3 Rxb3 26.Re3 Rxe3 27.fxe3 f6 28.Nd3 Kd7 29.Kf2 h5 30.Rh1 c5 31.dxc5 Nxc5 32.Nf4 Ne4+ 33.Kf3 Ng5+ 34.Kg2 e5 35.Rxh5 Rg8 36.Nd5 Bd8 37.Rh1 Ke6 38.Nc3 f5 39.Rh6+ Bf6 40.a4 f4 41.Nxe5 fxe3 42.Ng4 Rf8 43.Rxf6+ Rxf6 44.Nxf6 Kxf6 45.a5 1-0
2022.12.28 58th Groningen Open 2022
1083451 FM Elgersma, Onno (2291) Noordenbos, Daan (2056) 1-0
1.Nf3 Nf6 2.d4 c5 3.e3 e6 4.c4 cxd4 5.exd4 d6 6.Nc3 Be7 7.Bd3 Nbd7 8.O-O O-O 9.Re1 b6 10.Bg5 h6 11.Bf4 Bb7 12.Qe2 a6 13.Rad1 Re8 14.Bg3 Bf8 15.a3 Qc7 16.b4 Nh5 17.Rc1 Nxg3 18.hxg3 Nf6 19.Qe3 Nd7 20.g4 g6 21.g5 Bxf3 22.Qxf3 hxg5 23.Ne4 Be7 24.Qg3 e5 25.Nxg5 Bxg5 26.Qxg5 Qd8 27.Qxd8 Rexd8 28.dxe5 Nxe5 29.Bf1 a5 30.f4 Nc6 31.b5 Nd4 32.Rcd1 Ne6 33.g3 Ra7 34.Bg2 Kf8 35.Kf2 Re7 36.Bc6 Nc5 37.Rh1 Kg7 38.g4 Ne6 39.Kf3 g5 40.f5 Nf4 41.Rh2 Re5 42.Rdh1 Kf6 43.Rh6+ Ke7 44.Rd1 d5 45.cxd5 Nxd5 46.Bxd5 Rdxd5 47.Rxd5 Rxd5 48.Rxb6 Rd3+ 49.Ke4 Rxa3 50.f6+ Kd7 51.Kf5 Kc7 52.Ra6 Kb7 53.Kxg5 a4 54.Kh6 1-0
2022.12.27 58th Groningen Open 2022
1083441 Labruyere, Roger (2105) FM Elgersma, Onno (2291) 0-1
1.e4 e6 2.d4 d5 3.Nd2 c5 4.Ngf3 cxd4 5.Nxd4 Nc6 6.Bb5 Bd7 7.Nxc6 bxc6 8.Bd3 Bd6 9.Qe2 Ne7 10.e5 Bc7 11.Nf3 Ng6 12.O-O O-O 13.h4 f6 14.exf6 Qxf6 15.Bg5 Nf4 16.Qe3 Nh3+ 17.Kh1 Nxg5 18.hxg5 Qf4 19.Qxf4 Rxf4 20.Rae1 Raf8 21.Kg1 Ra4 22.a3 Rb8 23.b3 Rxa3 24.g6 hxg6 25.Ng5 e5 26.Bxg6 e4 27.Bf7+ Kf8 28.Be6 Ke7 29.Bxd7 Kxd7 30.Rd1 Ke7 31.c4 Ra5 32.cxd5 cxd5 33.g3 Rxb3 34.Rc1 Bb6 35.Kg2 Rb2 36.Rc6 Raa2 37.Re6+ Kd7 38.Rd1 Rd2 39.Rxd2 Rxd2 40.Rg6 Rxf2+ 41.Kh3 Bd4 42.Kg4 Bf6 43.Nh3 e3 44.Nxf2 exf2 0-1
2022.12.26 58th Groningen Open 2022
1083421 WFM Levitan, Ronit (1973) FM Elgersma, Onno (2291) 1-0
1.e4 c6 2.d4 d5 3.exd5 cxd5 4.Bd3 Nc6 5.c3 Qc7 6.h3 g6 7.Nf3 Nf6 8.O-O Bf5 9.Be2 Bg7 10.Be3 O-O 11.Nbd2 a6 12.Qc1 b5 13.Nb3 Ne4 14.Bh6 f6 15.Bxg7 Kxg7 16.Nfd2 Nd6 17.Bf3 Be6 18.Re1 Bg8 19.Nf1 e5 20.dxe5 fxe5 21.Ne3 e4 22.Be2 Nc4 23.Nd4 Nxd4 24.cxd4 Qf4 25.Rf1 Rac8 26.Bxc4 dxc4 27.Qc3 Qd6 28.a3 h5 29.Rad1 Bd5 30.Rfe1 Rf4 31.Qa5 Rcf8 32.Rd2 Be6 33.Qc3 Bd7 34.Nf1 h4 35.Ne3 Kh7 36.Rde2 R8f7 37.Nd1 Qd5 38.Qd2 Qg5 39.Kh2 a5 40.Qxa5 Bc6 41.Qd2 Qxg2+ 42.Kxg2 e3+ 43.Kg1 exd2 44.Rxd2 Rd7 45.d5 Rxd5 46.Rxd5 Bxd5 47.Nc3 Bf3 48.Re5 Rd4 49.Re3 Bc6 50.Re6 Bd7 51.Re4 Rxe4 52.Nxe4 Kh6 53.Kh2 g5 54.Nf6 Be6 55.f3 Kg6 56.Ne4 Bd7 57.Kg2 Kf5 58.Nc3 Ke5 59.Ne2 Bc6 60.Kf2 Be8 61.Ke3 Bd7 62.f4+ Kf5 63.fxg5 Kxg5 64.Ng1 Bc6 65.Ne2 Be8 66.Ng1 Bd7 67.Nf3+ Kh5 68.Ng1 Bc8 69.Kf4 Bb7 70.Kf5 Bg2 71.Kf4 Bc6 72.Kf5 Bd7+ 73.Kf4 Kg6 74.Nf3 Bxh3 75.Nxh4+ Kf6 76.Nf3 Bd7 77.Nd4 Be8 78.Ke4 Kg5 79.Kd5 Kf4 80.Kc5 Ke4 81.Nxb5 Kd3 82.a4 Kc2 83.Kxc4 Kxb2 84.a5 Bc6 85.a6 Bg2 86.a7 Bh1 87.Kc5 Kb3 88.Kb6 Kb4 89.Nd6 Ba8 90.Nb7 Kc4 91.Kc7 Kb5 92.Kb8 Kb6 93.Kxa8 Kc7 94.Nd6 Kxd6 95.Kb7 1-0
2022.12.24 58th Groningen Open 2022
1083401 FM Elgersma, Onno (2291) GM Kovchan, A (2450) 0-1
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.g3 e5 7.Nb3 Be7 8.Bg2 Be6 9.O-O O-O 10.a4 Qc7 11.Re1 Rc8 12.Nd2 Nc6 13.Nf1 Nd4 14.Ne3 h6 15.Bd2 Qc5 16.Rc1 b5 17.axb5 axb5 18.Ncd5 Nxd5 19.exd5 Bd7 20.c3 Nf5 21.Nc2 Bd8 22.Nb4 Bb6 23.Qe2 Qc4 24.Qxc4 bxc4 25.Bh3 Kf8 26.Ra1 Be8 27.Rxa8 Rxa8 28.Bf1 Bc5 29.Nc6 Ra4 30.Rb1 Ne7 31.Nb4 Bxb4 32.cxb4 Nxd5 33.Bxc4 Nc7 34.Rc1 Ra7 35.Bb3 f6 36.f4 Ke7 37.fxe5 fxe5 38.Kf2 Rb7 39.Bd1 Na6 40.Rc4 d5 41.Rh4 d4 42.Bf3 Rb8 43.Rh5 Kd6 44.Be2 Nc7 45.b5 Nd5 46.Bc4 Nf6 47.Rh4 Rc8 48.Be2 Rb8 49.b4 Kd5 50.Bf3+ e4 51.Bg2 g5 0-1
2022.12.23 58th Groningen Open 2022
1089121 FM Elgersma, Onno (2291) Matsumura, Cocoro (2133) 1-0
1.e4 c5 2.Nf3 d6 3.Bb5+ Nd7 4.a4 Nf6 5.Nc3 a6 6.Be2 e6 7.O-O Be7 8.d4 cxd4 9.Qxd4 b6 10.Nd2 Bb7 11.Nc4 d5 12.exd5 Bc5 13.Qf4 Nxd5 14.Nxd5 Bxd5 15.Nd6+ Bxd6 16.Qxd6 Qe7 17.Qg3 O-O 18.c4 Bc6 19.Rd1 Nc5 20.a5 Ba4 21.Re1 b5 22.Bf4 Rfd8 23.Be3 Nb3 24.Rab1 Rac8 25.cxb5 axb5 26.a6 b4 27.Bd1 Qd6 28.Qxd6 Rxd6 29.a7 Rdd8 30.Be2 Nd4 31.Bxd4 Rxd4 32.Bf3 Rdd8 33.Ra1 1-0
2022.12.22 58th Groningen Open 2022
1089103 GM Poetsch, H (2478) FM Elgersma, Onno (2291) 1-0
1.e4 c6 2.d4 d5 3.f3 Qb6 4.Nc3 e6 5.a3 Nd7 6.Be3 Ngf6 7.Be2 dxe4 8.fxe4 e5 9.Qd2 Qc7 10.O-O-O exd4 11.Bxd4 Bd6 12.g3 Be5 13.Nf3 Bxd4 14.Qxd4 Nb6 15.e5 Nfd5 16.Ne4 O-O 17.Bd3 Bf5 18.Nf6+ gxf6 19.Bxf5 fxe5 20.Nxe5 f6 21.Nd3 Qg7 22.Be6+ Kh8 23.c4 Nc7 24.Nf4 Qg5 25.Rhe1 Rae8 26.Bh3 Na6 27.Kb1 Rxe1 28.Rxe1 Qc5 29.Re8 Kg8 30.Qxf6 Rxe8 31.Be6+ Rxe6 32.Nxe6 Qg1+ 33.Ka2 Nd7 34.Qg7# 1-0
2022.12.17 Dutch League 2022-23
1047507 IM Lubbe, N (2479) FM Elgersma, Onno (2318) 1/2-1/2
1.d4 Nf6 2.Nf3 d5 3.c4 e6 4.e3 c5 5.cxd5 exd5 6.Bb5+ Nc6 7.O-O cxd4 8.Nxd4 Bd7 9.b3 Bd6 10.Bb2 O-O 11.Nd2 Re8 12.Rc1 Rc8 13.N2f3 Qe7 14.Qe2 Ne4 15.Rfd1 Bb8 16.Qf1 Qd6 17.Ne2 a6 18.Bc4 Ng5 19.Ng3 Nxf3+ 20.gxf3 Nb4 21.a3 Qe6 22.axb4 dxc4 23.bxc4 Qh3 24.Qxh3 Bxh3 25.Rd5 Rc6 26.Rh5 Bc8 27.f4 f6 28.Rd5 Be6 29.Rd4 Rec8 30.c5 b6 31.Rcd1 Bc7 32.f5 Bb3 33.R1d3 bxc5 34.bxc5 Bc2 35.Rd2 Rxc5 36.Rg4 Bxg3 37.Rd7 Bxf2+ 38.Kxf2 Rxf5+ 39.Ke2 Rg5 40.Rxg5 fxg5 41.Rxg7+ Kf8 42.Rxg5 Be4 43.Ba3+ Kf7 44.Re5 Rc2+ 45.Kd1 Rc4 46.Bb2 Bg6 47.Ra5 Rg4 48.Be5 Bd3 49.Rc5 Rg2 50.Bf4 Ra2 51.Kc1 a5 52.Rd5 Bg6 53.Rd2 Ra4 54.Kb2 Rb4+ 55.Ka3 Rb7 56.Rd5 Ra7 57.h4 h5 58.Rd6 Ra8 59.Be5 Bc2 60.Rd2 Bf5 61.Rd6 Bg4 62.Bf4 a4 63.Bg5 Be6 64.e4 Ra5 65.Rd4 Ra7 66.e5 Bg4 67.Rd6 Be6 68.Rd2 Bf5 69.Bf6 Bd7 70.Rg2 Rb7 71.Rg3 Rb3+ 72.Rxb3 axb3 73.Kxb3 1/2-1/2
2022.11.26 Dutch League 2022-23
1047457 FM Krudde, F (2288) FM Elgersma, Onno (2318) 0-1
1.d4 Nf6 2.c4 e6 3.Nc3 d5 4.cxd5 exd5 5.Bg5 c6 6.e3 Bd6 7.Bd3 O-O 8.Qf3 Be7 9.Bxf6 Bxf6 10.Nge2 Nd7 11.h4 b5 12.Nf4 Re8 13.Kf1 Nb6 14.b3 b4 15.Nce2 c5 16.Rd1 cxd4 17.exd4 a5 18.g3 a4 19.Kg2 axb3 20.axb3 Ra3 21.Rhe1 g6 22.Bb1 Bg7 23.h5 Qd7 24.hxg6 hxg6 25.Bc2 Na4 26.Rh1 Qg4 27.Qxg4 Bxg4 28.f3 Bd7 29.Kf2 Nc3 30.Rd2 Ra2 31.Rc1 g5 32.Nh5 Nxe2 33.Rxe2 Bxd4+ 34.Ke1 Rxe2+ 35.Kxe2 Bb5+ 36.Kd1 Be3 37.Rb1 d4 38.Be4 Rd2+ 39.Ke1 Rh2 40.g4 Rh1# 0-1
2022.11.20 TCh-BEL 2022-23
1122473 FM Ahn, M (2173) FM Elgersma, Onno (2318) 1-0
1.e4 c6 2.Nf3 d5 3.Nc3 dxe4 4.Nxe4 Nf6 5.Qe2 Nxe4 6.Qxe4 Qa5 7.Bc4 Bf5 8.Qe5 Qxe5+ 9.Nxe5 e6 10.d3 a5 11.a4 Na6 12.g4 Bg6 13.h4 Bd6 14.Bf4 Bxe5 15.Bxe5 f6 16.Bc3 Bf7 17.Bxa5 e5 18.Bxf7+ Kxf7 19.b3 h5 20.f3 Nc5 21.Bb6 Ne6 22.Be3 g6 23.Kf2 c5 24.Ke2 hxg4 25.fxg4 f5 26.Kf3 Kf6 27.Bf2 Ke7 28.Rae1 Kd6 29.gxf5 gxf5 30.Rhg1 Kd5 31.Rg6 Rae8 32.c4+ Kd6 33.Bg3 f4 34.Bf2 b6 35.Reg1 Ke7 36.Ke4 Kd6 37.R1g5 Ke7 38.Rxe5 Kf7 39.Rg4 Re7 40.h5 Ke8 41.Bh4 f3 42.Rg6 f2 43.Bxf2 Kd7 44.h6 Rf8 45.Be3 Rff7 46.Rg8 Rf1 47.Ra8 Kd6 48.Rg8 Re1 49.Rg3 Rf1 50.Rd5+ Kc7 51.Re5 Kd6 52.Rg6 Rh1 53.Bf4 Kd7 54.Rd5+ Ke8 55.Kf5 Nxf4 56.Rg8+ Kf7 57.Rg7+ Ke8 58.Rxe7+ Kxe7 59.Kxf4 Rxh6 60.a5 bxa5 61.Rxc5 Rb6 62.Rxa5 Rxb3 63.Ke4 1-0
2022.11.06 TCh-BEL 2022-23
1142388 FM Elgersma, Onno (2318) Roger, M (2116) 1/2-1/2
1.e4 c5 2.Nf3 d6 3.Bb5+ Nc6 4.O-O Bd7 5.Re1 Nf6 6.c3 a6 7.Bc4 Bg4 8.d4 cxd4 9.cxd4 e5 10.d5 Nd4 11.Be2 Nxe2+ 12.Qxe2 Be7 13.h3 Bd7 14.a4 b5 15.axb5 axb5 16.Rxa8 Qxa8 17.Na3 Qb7 18.Bd2 O-O 19.Bb4 Re8 20.Rc1 Bf8 21.Nd2 g6 22.Rc3 Rc8 23.Ndb1 Nh5 24.Rxc8 Qxc8 25.Nc3 Nf4 26.Qf1 Qd8 27.Ncxb5 Qg5 28.Kh1 Qh5 29.Kg1 Bxh3 30.gxh3 Nxh3+ 31.Kg2 Nf4+ 32.Kg1 Qg4+ 1/2-1/2
2022.11.05 Dutch League 2022-23
1047407 FM Elgersma, Onno (2318) FM Rijnaarts, S (2317) 0-1
1.e4 c5 2.Nf3 d6 3.Bb5+ Nd7 4.a4 Nf6 5.Nc3 a6 6.Be2 b6 7.d4 cxd4 8.Qxd4 e5 9.Qe3 Qc7 10.O-O Bb7 11.Rd1 Be7 12.Nd2 O-O 13.Nc4 Rfd8 14.b4 Nxe4 15.Nxe4 d5 16.Ng3 dxc4 17.Nf5 Bf8 18.Qg3 Kh8 19.Bg5 f6 20.Be3 b5 21.axb5 axb5 22.Bg4 Rxa1 23.Rxa1 Nb6 24.Nd4 Bd5 25.Nxb5 Qc6 26.Nc3 Bxb4 27.Bxb6 Bxc3 28.Bxd8 Bxa1 29.Qa3 Bd4 30.Qf8+ Bg8 31.Be7 Qb6 32.g3 Bxf2+ 33.Kg2 Bg1 34.Be6 Qf2+ 35.Kh3 Qxh2+ 36.Kg4 h5+ 37.Kf3 Qf2+ 38.Ke4 Qg2+ 39.Kf5 Qxc2# 0-1
2022.10.22 25th Hoogeveen Open 2022
1149685 FM Elgersma, Onno (2309) Shakhverdian, William (2123) 1-0
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 b5 7.Bb3 d5 8.dxe5 Be6 9.c3 Bc5 10.Nbd2 O-O 11.Bc2 Nxf2 12.Rxf2 Bxf2+ 13.Kxf2 f6 14.exf6 Qxf6 15.Kg1 Bg4 16.h3 Bh5 17.Nf1 Bxf3 18.Qxf3 Qxf3 19.gxf3 Rxf3 20.Bd1 Rf7 21.Bb3 Rd7 22.Be3 Na5 23.Bc5 Re8 24.Ng3 c6 25.Rd1 Rf7 26.Kg2 Nb7 27.Bf2 Nd6 28.Rd2 Re6 29.h4 Rf4 30.h5 g6 31.hxg6 hxg6 32.Bc5 Ne4 33.Nxe4 Rfxe4 34.Bd1 a5 35.Bd4 g5 36.Kg3 a4 37.Bf3 Re1 38.Rh2 Rb1 39.Bg4 Re7 40.Bf5 Kf7 41.Bxb1 1-0
2022.10.21 25th Hoogeveen Open 2022
1149647 Boeren, Jurriaan (1987) FM Elgersma, Onno (2309) 0-1
1.e4 c5 2.Ne2 Nc6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.Ndb5 d6 7.Bf4 e5 8.Bg5 a6 9.Na3 b5 10.Nd5 Be7 11.Bxf6 Bxf6 12.c3 Bg5 13.Nc2 Rb8 14.a4 bxa4 15.Ncb4 Nxb4 16.cxb4 O-O 17.Rxa4 a5 18.b5 Bd7 19.Nc3 d5 20.exd5 e4 21.Be2 f5 22.O-O Bf4 23.d6 Be6 24.Nd5 Bxd6 25.Bc4 Kh8 26.Qd4 Bb4 27.Rd1 Bxd5 28.Qxd5 Qf6 29.Raa1 Qxb2 30.Rab1 Qf6 31.Qc6 Rbc8 32.Qxf6 Rxf6 33.g3 Rb6 34.Rd7 g6 35.Be2 Bf8 36.Ra1 Bb4 37.Rad1 Re6 38.Ra7 e3 39.fxe3 Rxe3 40.Kf1 f4 41.gxf4 Rf8 42.Bc4 Re4 43.Bb3 Rexf4+ 44.Kg2 Rf2+ 45.Kh1 Rb2 46.Bc4 Bd2 47.b6 Be3 48.Re7 Bxb6 49.Re2 Rxe2 50.Bxe2 Rf2 51.Bg4 Bc7 52.h3 Ra2 53.Rd7 Be5 54.Ra7 a4 55.Be6 Ra1+ 56.Kg2 a3 57.Bd5 Rd1 58.Bc4 Bd6 59.Rd7 Rd4 60.Bb3 g5 61.Be6 h5 62.Kf3 Bc5 63.Rxd4 Bxd4 64.Ke4 Bc3 65.Kf5 Bd2 66.Ba2 Kg7 67.Bb3 Kf8 68.Ke4 Ke7 69.Kd3 Bf4 70.Ke4 Kf6 71.Ba2 Bd6 72.Bb3 g4 73.hxg4 hxg4 74.Ba2 g3 75.Kf3 Be5 76.Bd5 Ke7 77.Ba2 Kd6 78.Bb3 Kc5 0-1
2022.10.20 25th Hoogeveen Open 2022
1149597 FM Elgersma, Onno (2309) Ismail, Tamer (2018) 0-1
1.d4 d5 2.Nf3 Nf6 3.e3 e6 4.c4 c6 5.Nbd2 Nbd7 6.Bd3 Bd6 7.b3 e5 8.cxd5 cxd5 9.dxe5 Nxe5 10.Bb5+ Bd7 11.Bxd7+ Qxd7 12.O-O Nd3 13.Qe2 Nxc1 14.Raxc1 O-O 15.Rfd1 Rac8 16.Nd4 Ba3 17.Rxc8 Rxc8 18.h3 a6 19.Qf3 Bb2 20.Nf5 Qe6 21.Nf1 g6 22.N5g3 Be5 23.Qe2 Ne4 24.Nxe4 dxe4 25.Qd2 b5 26.Qd5 Qxd5 27.Rxd5 f6 28.g4 Rc2 29.a4 b4 30.Nd2 Rc1+ 31.Nf1 Rb1 32.Ra5 Rxb3 33.Nd2 Rd3 34.Nc4 b3 35.Rxa6 b2 36.Nxb2 Bxb2 37.a5 Rd1+ 38.Kg2 Ra1 39.Ra8+ Kg7 40.a6 Be5 41.f4 Ra2+ 42.Kf1 Bd6 43.a7 Bc5 44.Re8 Rxa7 45.Rxe4 Re7 46.Rxe7+ Bxe7 47.Ke2 h6 48.Kf3 Bd6 49.Ke4 Kf7 50.Kd5 Ke7 51.Kd4 Ke6 52.Ke4 Bb4 53.Kd4 Be1 54.Ke4 g5 55.Kd4 Bg3 56.Ke4 Be1 57.Kd4 Bd2 58.Ke4 Bc1 59.Kf3 Kd5 60.h4 Bb2 61.e4+ Ke6 62.e5 fxe5 63.fxg5 hxg5 64.hxg5 Bc1 65.g6 Kf6 66.Ke4 Bf4 67.g5+ Kxg6 0-1
2022.10.19 25th Hoogeveen Open 2022
1149511 FM Elgersma, Onno (2309) FM Clemens, A (2082) 1/2-1/2
1.e4 c5 2.Nf3 d6 3.Bb5+ Nd7 4.a4 Nf6 5.Nc3 g6 6.O-O Bg7 7.a5 a6 8.Be2 b5 9.axb6 Qxb6 10.d3 O-O 11.Nd2 Ne5 12.Kh1 Bb7 13.f4 Nc6 14.Qe1 Qc7 15.Bd1 e6 16.Qh4 d5 17.Rf3 Nd4 18.Rh3 h6 19.e5 Nd7 20.Nf3 Nxf3 21.Bxf3 Qd8 22.Qg3 Re8 23.Bd2 Rb8 24.Re1 Nf8 25.Qf2 Rc8 26.Nd1 Ba8 27.Ne3 Nh7 28.Ng4 h5 29.Ne3 f5 30.exf6 Nxf6 31.Rg3 Kf7 32.Qe2 Qd6 33.Nd1 Bc6 34.Nf2 Bd7 35.Nh3 Re7 36.Ng5+ Kg8 37.c4 Rce8 38.Qe5 Qc6 39.Qe2 Qd6 40.Qf2 e5 41.fxe5 Rxe5 42.Rxe5 Qxe5 43.Bxd5+ Nxd5 44.cxd5 Qxd5 45.Re3 Rf8 46.Rf3 Rxf3 47.Nxf3 Bg4 48.Ng5 Qf5 49.Qe1 Qe5 50.Ne4 Qxb2 51.Nxc5 Qa1 52.Qxa1 Bxa1 53.Nxa6 Be2 54.Nc5 Bd4 55.Ne6 Be5 56.Nc5 Bd4 57.Nb3 Bb2 58.Bc1 Bc3 59.Nc5 Bd4 60.Ne6 Be5 61.d4 Bc4 62.Nf4 Bxf4 63.Bxf4 Kf7 1/2-1/2
2022.10.19 25th Hoogeveen Open 2022
1149555 WIM Asatryan, Sona (2088) FM Elgersma, Onno (2309) 1/2-1/2
1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Nf6 5.Nxf6+ exf6 6.c3 Bd6 7.Bd3 O-O 8.Ne2 Re8 9.O-O Be6 10.Bf4 g6 11.Qd2 a5 12.Ng3 Bxf4 13.Qxf4 Nd7 14.c4 Nb6 15.b3 a4 16.Rad1 f5 17.h4 axb3 18.axb3 Ra3 19.Bc2 Ra2 20.Rd2 Bc8 21.Rfd1 Qe7 22.h5 Qb4 23.Qg5 Qe7 24.Qf4 Qb4 25.Qg5 Qe7 26.Qf4 Qb4 27.h6 1/2-1/2
2022.10.18 25th Hoogeveen Open 2022
1149457 GM Bharath, Subramaniyam H (2495) FM Elgersma, Onno (2309) 1-0
1.e4 c6 2.Nc3 d5 3.Nf3 dxe4 4.Nxe4 Nf6 5.Qe2 Nxe4 6.Qxe4 Nd7 7.d4 Nf6 8.Qf4 g6 9.Bd3 Bg7 10.O-O O-O 11.Re1 Bg4 12.Ne5 Be6 13.Qh4 Qb6 14.c3 c5 15.Nf3 Bd5 16.dxc5 Qxc5 17.Be3 Qd6 18.Nd4 a6 19.Bf1 Rad8 20.Nb3 Bxb3 21.axb3 Qd5 22.b4 Qf5 23.Qf4 Qxf4 24.Bxf4 e6 25.Ra5 Rd5 26.c4 Rd4 27.Be3 Rd7 28.Be2 Rc8 29.b5 axb5 30.Rxb5 Ne4 31.Rc1 Nd6 32.Rd1 Rcd8 33.Ra5 Nf5 34.Rxd7 Rxd7 35.Ra8+ Bf8 36.Bc5 Nd6 37.h4 Kg7 38.Bd4+ f6 39.Bxf6+ Kf7 40.Be5 Nf5 41.Rb8 Bc5 42.Rh8 Rd2 43.Rxh7+ Kg8 44.Rh8+ Kf7 45.Rh7+ Kg8 46.Rc7 b6 47.Kf1 Bd4 48.Bxd4 Nxd4 49.Rd7 Rxe2 50.Rxd4 Rxb2 51.Rd7 Kf8 52.Rb7 Rb4 53.c5 bxc5 54.Rxb4 cxb4 55.Ke2 Ke7 56.Kd3 Kf6 57.Kc4 Kf5 58.Kxb4 Kg4 59.Kc5 Kxh4 60.Kd6 Kg4 61.Kxe6 Kf4 62.Kf6 g5 63.g3+ Kg4 64.Kg6 1-0
2022.10.17 25th Hoogeveen Open 2022
1149411 FM Elgersma, Onno (2309) Hari, Charan Sai Kalluri (1981) 1-0
1.e4 e5 2.Nf3 Nc6 3.Bb5 f5 4.d3 fxe4 5.dxe4 Nf6 6.O-O d6 7.Nc3 Be7 8.h3 O-O 9.a4 Kh8 10.Bc4 Qe8 11.a5 a6 12.Be3 Nh5 13.Nd5 Bd8 14.Kh1 Qg6 15.Bd3 Nf4 16.Nxf4 exf4 17.Bd2 Qh6 18.Bc3 Ne5 19.Nxe5 dxe5 20.Qf3 Bf6 21.Bb4 Re8 22.Bc4 Be6 23.Bxe6 Rxe6 24.Rad1 Be7 25.Bxe7 Rxe7 26.Rd5 Qc6 27.Qd3 h6 28.Rd1 Kh7 29.c4 Rf8 30.f3 Rf6 31.b3 Rfe6 32.Qc3 b6 33.Qb4 Kg6 34.Qa3 Qb7 35.Kh2 Kf6 36.R1d3 Kf7 37.Rd8 Re8 38.R8d7+ R8e7 39.R7d5 Rg6 40.Qb2 Rge6 41.Qf2 Rg6 42.Qe1 Qc6 43.Rd8 Qc5 44.R3d5 Qa3 45.axb6 cxb6 46.Qd2 Rge6 47.b4 Qa4 48.c5 bxc5 49.bxc5 Qb5 50.Qa2 Qb4 51.Rxe5 Qe1 52.Rf5+ Kg6 53.Rxf4 h5 54.Rd6 1-0
2022.10.16 25th Hoogeveen Open 2022
1156078 Mensing, Adrian (2000) FM Elgersma, Onno (2309) 0-1
1.d4 Nf6 2.c4 e6 3.g3 d5 4.Bg2 Bb4+ 5.Nd2 O-O 6.Nf3 b6 7.O-O Bb7 8.cxd5 exd5 9.a3 Be7 10.b4 Nbd7 11.Rb1 a5 12.b5 a4 13.Qc2 Re8 14.Ne5 Nxe5 15.dxe5 Nd7 16.Nf3 Bc5 17.Qf5 Qe7 18.Ng5 Nf8 19.Rd1 h6 20.Nf3 Bxa3 21.Bf4 Ne6 22.Qg4 Nxf4 23.gxf4 Bc5 24.f5 a3 25.f6 Qf8 26.Nh4 Rxe5 27.Nf5 g6 28.Nh4 a2 29.Ra1 Rg5 30.Qd7 Qd6 31.Qxd6 Bxd6 32.Rd2 d4 33.Raxa2 Rxa2 34.Rxa2 Bxg2 35.Nxg2 Rxb5 36.Ra8+ Kh7 37.f4 Rf5 38.Ra4 Rxf6 0-1
2022.10.15 25th Hoogeveen Open 2022
1156029 FM Elgersma, Onno (2309) Nijdam, Brian (1877) 1-0
1.e4 e5 2.Nf3 Nf6 3.Nc3 Nc6 4.Bb5 Nd4 5.Nxd4 exd4 6.e5 dxc3 7.exf6 Qxf6 8.dxc3 Bc5 9.O-O O-O 10.Qh5 Bb6 11.a4 a6 12.Bd3 g6 13.Qh6 d6 14.Bg5 Qg7 15.Qh4 Re8 16.Bf6 Qf8 17.a5 Ba7 18.Kh1 Bd7 19.f4 h6 20.f5 g5 21.Qh5 Bc6 22.Bc4 d5 23.Bd3 Re3 24.Bxg5 hxg5 25.f6 Rxd3 26.cxd3 Bd7 27.Qxg5+ Kh7 28.Rf4 1-0
2022.09.17 Dutch League 2022-23
1047275 FM Elgersma, Onno (2318) IM Kerigan, D (2350) 0-1
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 d6 5.O-O Bd7 6.c3 g6 7.d4 Qe7 8.Re1 Bg7 9.h3 h6 10.Be3 Nf6 11.Nbd2 O-O 12.Bc2 Rad8 13.Nf1 Nh5 14.Qd2 g5 15.b4 Nf4 16.Ng3 Qf6 17.Bd1 Rfe8 18.a4 Ne7 19.Nh2 Qg6 20.Kh1 Bc8 21.Qc2 d5 22.dxe5 Bxe5 23.Nf3 Bh8 24.Nd4 dxe4 25.Bxf4 gxf4 26.Nxe4 Nd5 27.Bf3 Nxc3 28.Nxc3 Qxc2 29.Nxc2 Rxe1+ 30.Rxe1 Bxc3 31.Re4 Bd2 32.Rc4 c6 33.Nd4 Kf8 34.b5 cxb5 35.axb5 a5 36.b6 Bb4 37.Ne2 Be6 38.Rc7 Rb8 39.Nxf4 Bb3 40.Nd3 Bd6 41.Rd7 Be7 42.Ne5 a4 43.Rc7 Be6 44.Bg4 Bxg4 45.hxg4 Ke8 46.Rc2 a3 47.Nd3 Rd8 48.Nc1 Rd6 49.g3 Rxb6 50.Na2 Rb1+ 51.Kg2 b5 52.Nc3 Rb3 53.Nd5 Bd6 54.f4 b4 55.Rc8+ Kd7 56.Nb6+ Ke6 57.Re8+ Kf6 58.Ra8 Kg7 59.Nc4 Rd3 60.Ra6 b3 61.Nxa3 Bxa3 62.Rxa3 b2 63.Rxd3 b1=Q 64.Rf3 Qd1 65.g5 h5 66.Rf2 Kg6 67.Rb2 Kf5 68.g6 Qd5+ 69.Kh2 fxg6 70.Rb6 Qd2+ 71.Kh3 Qd3 72.Rc6 Qf1+ 73.Kh2 Kg4 74.Rxg6+ Kf3 75.Rc6 Qg2# 0-1
2022.08.23 Titled Tue 23rd Aug Early
1201160 FM Elgersma, Onno (2299) IM Glavina, P (2394) 1-0
1.e4 c5 2.Nf3 Nc6 3.Bb5 Nf6 4.Nc3 Qc7 5.O-O Nd4 6.Re1 a6 7.Bc4 e6 8.e5 Ng4 9.Nxd4 cxd4 10.Qxg4 Qxc4 11.Ne4 Qc7 12.Nd6+ Bxd6 13.exd6 Qxd6 14.Qxg7 Rf8 15.d3 b5 16.Bh6 Bb7 17.Qxf8+ Qxf8 18.Bxf8 Kxf8 19.Rac1 b4 20.c3 bxc3 21.bxc3 dxc3 22.Rxc3 Ke7 23.Ra3 Rg8 24.g3 Rg5 25.Rb1 Rb5 26.Rxb5 axb5 27.f4 Bc6 28.Kf2 Kd6 29.Ke3 Kc5 30.Rc3+ Kb4 31.Kd4 Bd5 32.a3+ Ka5 33.Kc5 Bc6 34.d4 Ka4 35.g4 Ka5 36.f5 Ka6 37.Rh3 Bf3 38.Rxh7 Bxg4 39.Rxf7 Bxf5 40.Rxd7 Ka5 41.Ra7# 1-0
2022.08.23 Titled Tue 23rd Aug Early
1201482 FM Elgersma, Onno (2299) FM Hoffmann, As (2185) 1-0
1.e4 d6 2.d4 Nf6 3.Nc3 c6 4.Nf3 Bg4 5.h3 Bh5 6.Bc4 e6 7.O-O d5 8.Bd3 Be7 9.Be3 a6 10.a3 O-O 11.Re1 Nbd7 12.Bf4 Rc8 13.Rb1 c5 14.exd5 exd5 15.g4 Bg6 16.dxc5 Nxc5 17.Bxg6 fxg6 18.Nd4 Nfe4 19.Be3 Bh4 20.Rf1 Nxc3 21.bxc3 Qd6 22.c4 dxc4 23.Qe2 b5 24.Nf3 Bf6 25.g5 Bc3 26.Rfd1 Qe6 27.Nh2 Na4 28.Ng4 Rfe8 29.Qf3 Qe4 30.Qxe4 Rxe4 31.Rd6 Ra8 32.Rbd1 Be5 33.Rd7 Nc3 34.R1d2 a5 35.Rb7 b4 36.Rdd7 bxa3 37.Nxe5 Rxe5 38.Rxg7+ Kf8 39.Bf4 a2 40.Bxe5 a1=Q+ 41.Kg2 Ne4 42.Bxa1 1-0
2022.08.23 Titled Tue 23rd Aug Early
1201001 FM Elgersma, Onno (2299) Ansh, M Shah (2177) 1-0
1.e4 c5 2.Nf3 d6 3.Bb5+ Nd7 4.O-O a6 5.Bd3 g6 6.c3 Bg7 7.Bc2 Ngf6 8.d4 cxd4 9.cxd4 b5 10.Re1 Bb7 11.Nc3 O-O 12.Bd3 Rc8 13.a3 Nb6 14.Qe2 Nc4 15.Bg5 h6 16.Bh4 g5 17.Bg3 Nd7 18.Rad1 Ndb6 19.e5 Bxf3 20.gxf3 e6 21.Qe4 Re8 22.Qh7+ Kf8 23.Ne4 d5 24.Nf6 Bxf6 25.exf6 Qxf6 26.b3 Nb2 27.Bd6+ Re7 28.Be5 Qxf3 29.Qh8# 1-0
2022.08.23 Titled Tue 23rd Aug Early
1201276 IM Mindlin, A (2426) FM Elgersma, Onno (2299) 1-0
1.d4 Nf6 2.c4 e6 3.Nc3 d5 4.Nf3 a6 5.e3 dxc4 6.Bxc4 b5 7.Bd3 Bb7 8.O-O c5 9.Qe2 Nbd7 10.dxc5 Bxc5 11.e4 Qb8 12.Bg5 Nh5 13.Nxb5 axb5 14.Bxb5 Bc8 15.Rac1 Bb6 16.Rfd1 O-O 17.Bxd7 Bxd7 18.Rxd7 Rxa2 19.Be7 Rc8 20.Rcd1 Nf4 21.Qd2 h6 22.Bd6 Qa8 23.Qxf4 f6 24.Qg4 1-0
2022.08.23 Titled Tue 23rd Aug Early
1201582 IM Blanco Ronquillo, H (2442) FM Elgersma, Onno (2299) 1-0
1.d4 Nf6 2.c4 e6 3.Nf3 a6 4.Bg5 d5 5.Nbd2 Be7 6.e3 O-O 7.Rc1 Nbd7 8.c5 c6 9.Bd3 b6 10.b4 a5 11.a3 axb4 12.axb4 Ra3 13.Qc2 b5 14.O-O h6 15.Bf4 Nh5 16.Be5 f6 17.Bd6 f5 18.Ne5 Nxe5 19.dxe5 Rf7 20.Be2 g6 21.Bxh5 gxh5 22.Ra1 Bxd6 23.cxd6 Ra4 24.Rxa4 bxa4 25.Qxa4 Qb6 26.Ra1 Rb7 27.h4 Kf7 28.Nb3 Qxb4 29.Qxb4 Rxb4 30.Ra7+ Ke8 31.Nc5 Rb5 32.d7+ Bxd7 33.Nxd7 c5 34.Nf6+ Kd8 35.Nxh5 c4 36.Nf4 Rb6 37.Ne2 Rb1+ 38.Kh2 Rb2 39.Nd4 Rxf2 40.Nxe6+ Kc8 41.Nd4 c3 42.e6 Kd8 43.Nc6+ 1-0
2022.08.19 Bruges Masters 2022
1206621 FM Elgersma, Onno (2299) Honkoop, Gilian (2184) 1-0
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.d3 b5 7.Bb3 d6 8.a3 O-O 9.Nc3 Nb8 10.a4 b4 11.Nd5 Nxd5 12.Bxd5 c6 13.Bb3 Nd7 14.d4 Qc7 15.Re1 a5 16.c3 Bb7 17.Qe2 c5 18.dxe5 dxe5 19.Bc4 Nb6 20.Bb5 Nc8 21.Nd2 Rd8 22.Nc4 Na7 23.Qg4 Rab8 24.Qg3 Bc8 25.Bh6 Bf6 26.f4 Nxb5 27.axb5 Rxb5 28.fxe5 Be6 29.Nd6 Bxe5 30.Qxe5 gxh6 31.Qg3+ 1-0
2022.08.18 Bruges Masters 2022
1206614 GM Ikonnikov, Vy (2493) FM Elgersma, Onno (2299) 1/2-1/2
1.d4 Nf6 2.Nf3 e6 3.c4 Bb4+ 4.Bd2 a5 5.g3 d5 6.a3 Be7 7.Bg2 O-O 8.Qc2 c6 9.Bf4 Nbd7 10.O-O Ne4 11.Nc3 f5 12.Ne5 g5 13.Nxd7 Bxd7 14.Be5 Bf6 15.Bxf6 Qxf6 16.Nxe4 fxe4 17.Qc3 b6 18.f3 exf3 19.Rxf3 Qg7 20.Raf1 Rxf3 21.Bxf3 Rc8 22.c5 b5 23.Bh5 Rf8 24.Rxf8+ Kxf8 25.h3 Be8 26.Bg4 Qf6 27.Qe3 Ke7 28.Qe5 Qxe5 29.dxe5 Bg6 30.h4 h6 31.Kf2 Be4 32.Ke3 Kf7 33.hxg5 hxg5 34.Bh5+ Bg6 35.Bxg6+ Kxg6 36.g4 Kf7 37.Kd4 Ke7 38.b4 a4 39.Kd3 Kf7 1/2-1/2
2022.08.17 Bruges Masters 2022
1206611 FM Elgersma, Onno (2299) Janse, JJ (2187) 1-0
1.e4 c6 2.d4 g6 3.Nf3 Bg7 4.Nc3 d5 5.h3 Nh6 6.Be2 O-O 7.O-O dxe4 8.Nxe4 Nf5 9.c3 Nd7 10.Bg5 Nf6 11.Bd3 Nxe4 12.Bxe4 Be6 13.Re1 Re8 14.Qd2 Qd7 15.Bc2 Nd6 16.Rad1 Rad8 17.Qc1 Bd5 18.Ne5 Qc8 19.Bf4 f6 20.Nd3 Nf7 21.Be3 Nd6 22.b3 b5 23.Nc5 Nb7 24.Nd3 Nd6 25.Bf4 Nf7 26.Be3 Nd6 27.Nb4 a5 28.Nd3 e5 29.dxe5 fxe5 30.Bg5 Rd7 31.Nc5 Rf7 32.c4 bxc4 33.bxc4 Nxc4 34.Bb3 Nb6 35.Ne4 Qf5 36.Bxd5 cxd5 37.Nd6 Qxf2+ 38.Kh1 Ref8 39.Nxf7 Qxf7 40.Qc6 Rb8 41.Rb1 Nd7 42.Rxb8+ Nxb8 43.Qa8 Qf8 44.Qxd5+ Kh8 45.Qb7 e4 46.Be7 Qe8 47.Rc1 1-0
2022.08.16 Bruges Masters 2022
1206599 FM Moreby, James (2300) FM Elgersma, Onno (2299) 1-0
1.e4 c6 2.d4 d5 3.exd5 cxd5 4.Nf3 Nc6 5.Bb5 Nf6 6.Ne5 Bd7 7.Bxc6 Bxc6 8.O-O e6 9.Nd2 Be7 10.c3 O-O 11.f4 Nd7 12.Rf3 Nxe5 13.fxe5 f6 14.Rg3 fxe5 15.Qg4 Bf6 16.Nf3 e4 17.Qxe6+ Kh8 18.Ne5 Bxe5 19.Qxe5 Qf6 20.Bf4 Rae8 21.Qxf6 Rxf6 22.Be5 Rf7 23.Rf1 Rxf1+ 24.Kxf1 Rf8+ 25.Ke2 Rf7 26.Ke3 h6 27.Rg6 Kg8 28.b3 Rd7 29.c4 a6 30.h4 Kf8 31.h5 Kg8 32.g4 Kf8 33.Ke2 Rf7 34.Rd6 Ke8 35.Re6+ Kf8 36.cxd5 Bxd5 37.Rd6 Bc6 38.d5 Bd7 39.Rg6 Bb5+ 40.Ke3 Bd3 41.a4 Bc2 42.d6 Bxb3 43.Bxg7+ Ke8 44.Bxh6 Bxa4 45.Bf4 Kf8 46.Bh6+ Ke8 47.Rg8+ Kd7 48.Bf4 Bb3 49.Rh8 Rg7 50.h6 Rxg4 51.h7 Rh4 52.Rd8+ Kxd8 53.Bg5+ Kd7 54.Bxh4 1-0
2022.08.16 Bruges Masters 2022
1206605 FM Elgersma, Onno (2299) IM Leenhouts, K (2442) 1-0
1.e4 c5 2.Nf3 e6 3.g3 Nc6 4.Bg2 Nf6 5.Qe2 e5 6.Nc3 Be7 7.Nd5 d6 8.c3 O-O 9.O-O Re8 10.Ne1 Nxd5 11.exd5 Nb8 12.Nc2 Bf5 13.d3 Nd7 14.Ne3 Bg6 15.f4 exf4 16.gxf4 h6 17.Bd2 Bh4 18.Kh1 Qf6 19.Qg4 Qe7 20.f5 Bh7 21.Nc4 b5 22.Nxd6 Ne5 23.Qh3 Qxd6 24.Qxh4 Nxd3 25.Qg4 Re5 26.f6 Bg6 27.fxg7 Kxg7 28.c4 Kh7 29.Qg3 Qd7 30.Rf3 Re2 31.Rxd3 bxc4 32.Qf4 Rxg2 33.Qxh6+ Kg8 34.Bc3 f6 35.Kxg2 Bxd3 36.Rg1 Qf5 37.Kh1+ Kf7 38.Rg7+ Ke8 39.Qh8# 1-0
2022.08.15 Bruges Masters 2022
1206595 FM Elgersma, Onno (2299) Ruzhansky, Elias (2026) 1-0
1.e4 c5 2.Nf3 Nc6 3.Bb5 Nf6 4.Nc3 Qc7 5.O-O Nd4 6.Re1 a6 7.Bc4 e5 8.Ng5 h6 9.Nf3 d6 10.h3 Be6 11.d3 b5 12.Bxe6 fxe6 13.Nxd4 cxd4 14.Ne2 Qf7 15.a4 b4 16.Bd2 Rb8 17.c3 bxc3 18.bxc3 dxc3 19.Bxc3 Be7 20.Rb1 O-O 21.Rxb8 Rxb8 22.Qc2 Bd8 23.Rb1 Rxb1+ 24.Qxb1 Nd7 25.d4 exd4 26.Bxd4 Bf6 27.Be3 Nc5 28.Qb8+ Qf8 29.Qb6 Nxa4 30.Qxa6 Nc3 31.Nf4 Qb8 32.Nxe6 Qb1+ 33.Kh2 Be5+ 34.g3 Qxe4 35.Qc8+ Kh7 36.Nf8+ Kg8 37.Ng6+ Kh7 38.Ne7 Bxg3+ 39.Kxg3 Qe5+ 40.Kg2 Qe4+ 41.Kg1 Ne2+ 42.Kf1 Ng3+ 43.fxg3 Qf3+ 44.Bf2 Qh1+ 45.Ke2 Qe4+ 46.Kd2 Qxe7 47.Qf5+ Kg8 48.Bd4 Qb7 49.Qg4 Qg2+ 50.Ke3 Qg1+ 51.Kd3 Qb1+ 52.Kc4 Qa2+ 53.Kb5 Qd5+ 54.Kb6 Qb3+ 55.Kc7 Qf7+ 56.Kxd6 Qf8+ 57.Ke5 Qb8+ 58.Ke4 Qb1+ 59.Kf3 Qd1+ 60.Kg2 Qd2+ 61.Bf2 Qd5+ 62.Qf3 Qd7 63.h4 Qb5 64.Qe4 Qd7 65.h5 Qf7 66.Qg4 Qd5+ 67.Kh2 Qf7 68.Bd4 Qc7 69.Qe6+ Kh7 70.Be5 Qa7 71.Kh3 Qb7 72.Kh2 Qa7 73.Qf5+ Kg8 74.g4 Qb7 75.Bg3 Qb2+ 76.Qf2 Qb4 77.Qf3 Qd2+ 78.Kh3 Qd7 79.Be1 Qe7 80.Bc3 Qa7 81.Qd5+ Kh7 82.Qd4 Qb7 83.Kg3 Qe7 84.Kf3 Qc7 85.Qe5 Qa7 86.Bd4 Qa3+ 87.Ke4 Qa8+ 88.Kf4 Qg8 89.Qe7 Qb8+ 90.Be5 Qg8 91.Qxg7+ Qxg7 92.Bxg7 Kxg7 93.Ke5 Kf7 94.Kf5 Kg7 95.Ke6 Kg8 96.Kf6 Kh7 97.Kf7 Kh8 98.Kg6 Kg8 99.Kxh6 Kh8 100.g5 Kg8 101.Kg6 Kh8 102.Kf7 Kh7 103.g6+ Kh6 104.g7 Kg5 105.g8=Q+ Kf5 106.h6 Ke5 107.h7 Ke4 108.h8=R Kd4 109.Qg5 Ke4 110.Rh4+ Kf3 111.Qf4+ Ke2 112.Rh2+ Kd3 113.Rd2+ Kc3 114.Qd4+ Kb3 115.Rb2+ Ka3 116.Qb4# 1-0
2022.08.14 Bruges Masters 2022
1239987 FM Elgersma, Onno (2299) Stevens, C FRA (2008) 1-0
1.e4 c5 2.Nf3 d6 3.Bb5+ Bd7 4.a4 Nc6 5.Nc3 g6 6.O-O Bg7 7.Re1 e5 8.d3 Nge7 9.Nd2 O-O 10.Nc4 a6 11.Bxc6 Bxc6 12.a5 Qc7 13.f4 Rad8 14.fxe5 d5 15.exd5 Nxd5 16.Ne4 Bxe5 17.Nxe5 Qxe5 18.Bg5 Qxb2 19.Bxd8 Rxd8 20.Qd2 Nb4 21.Rac1 Qd4+ 22.Qf2 Qxf2+ 23.Kxf2 c4 24.dxc4 f5 25.Nf6+ Kg7 26.Nd5 Nxd5 27.cxd5 Rxd5 28.Re7+ Kf6 29.Rce1 Rxa5 30.R1e6+ Kg5 31.Rxh7 f4 32.Rg7 Ra2 33.Rgxg6+ Kf5 34.g4+ fxg3+ 35.Kxg3 Rxc2 36.Rgf6+ 1-0
2022.08.14 Bruges Masters 2022
1239989 Luminet, D (2142) FM Elgersma, Onno (2299) 0-1
1.e4 c6 2.d4 d5 3.exd5 cxd5 4.Bf4 Nc6 5.c3 Nf6 6.Nf3 e6 7.Nbd2 Nh5 8.Be3 Bd6 9.Ne5 g6 10.f4 f6 11.Nd3 O-O 12.Be2 Ng7 13.Nf3 b6 14.O-O a5 15.a4 Ba6 16.Qd2 Nf5 17.Rfe1 Bc7 18.b4 Bc4 19.b5 Nce7 20.Nb2 Bxe2 21.Qxe2 Re8 22.Bd2 Nc8 23.c4 dxc4 24.Qxc4 Ncd6 25.Qb3 Qd7 26.d5 exd5 27.Qxd5+ Qf7 28.Qxf7+ Kxf7 29.Rac1 Rxe1+ 30.Bxe1 Bd8 31.Bf2 Ne4 32.g4 Nxf2 33.Kxf2 Nd6 34.Nc4 Ne4+ 35.Ke3 Nc5 36.Ra1 Bc7 37.f5 Re8+ 38.Kf2 Re4 39.fxg6+ hxg6 40.Ne3 Nd3+ 41.Ke2 Bf4 42.Kxd3 Rxe3+ 43.Kd4 0-1
2022.08.04 Dutch Open 2022
1251043 FM Elgersma, Onno (2316) Van Roon, Sjoerd (2310) 0-1
1.d4 d5 2.Nf3 Nf6 3.e3 e6 4.c4 Be7 5.Bd3 O-O 6.O-O dxc4 7.Bxc4 b6 8.Qe2 Bb7 9.Rd1 Nbd7 10.Nc3 Ne4 11.Nxe4 Bxe4 12.b3 c5 13.Bb2 Bf6 14.Rac1 Qe7 15.Bb5 Rfd8 16.Ba3 Rac8 17.Bxd7 Rxd7 18.Nd2 Bb7 19.dxc5 bxc5 20.Nc4 Ba6 21.h3 Qd8 22.Qf3 Rd5 23.e4 Rxd1+ 24.Rxd1 Bd4 25.Ne3 Bb7 26.Bb2 f5 27.Bxd4 cxd4 28.Nc4 Bxe4 29.Qe2 Qf6 30.Nd6 Rc2 31.Qb5 h6 32.Qd7 Bd5 33.Nc8 Kh7 34.Ne7 Qh4 35.Rf1 Qe4 36.Nxd5 exd5 37.Qa4 d3 38.Qxe4 fxe4 39.Rd1 Rxa2 40.Rb1 Rc2 41.Rd1 d2 42.Kf1 Rc1 43.Ke2 Rxd1 44.Kxd1 Kg6 45.Kxd2 d4 46.Kc2 Kf5 47.g3 h5 48.Kd2 h4 49.Ke2 Ke5 50.Kd2 Kd5 51.gxh4 Kc5 52.f4 exf3 0-1
2022.08.03 Dutch Open 2022
1251031 Manukonda, A (2021) FM Elgersma, Onno (2316) 0-1
1.d4 Nf6 2.c4 e6 3.Nf3 Bb4+ 4.Bd2 a5 5.g3 d5 6.Bg2 O-O 7.O-O dxc4 8.Bxb4 axb4 9.Ne5 Nc6 10.Nxc6 bxc6 11.e3 e5 12.Qc1 exd4 13.Rd1 Be6 14.Bxc6 Ra5 15.Rxd4 Qe7 16.Qd2 Rb8 17.a3 g6 18.Qe1 Rb6 19.Bg2 c5 20.Rd1 c3 21.bxc3 b3 22.c4 Ra4 23.Nd2 b2 24.Ra2 Rxc4 25.a4 Rc2 26.a5 Rb8 27.Ra4 Rxd2 28.Rb1 Qd7 29.Ra3 Rd3 0-1
2022.08.02 Dutch Open 2022
1251014 FM Elgersma, Onno (2316) FM Ypma, P (2346) 1/2-1/2
1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.d3 Bc5 5.O-O d6 6.c3 O-O 7.Bg5 Bb6 8.a4 a6 9.Bc4 Ne7 10.Nbd2 c6 11.Ba2 Ng6 12.Nh4 Nxh4 13.Bxh4 h6 14.Bg3 Bg4 15.Qc2 Nh5 16.Kh1 Bc7 17.d4 Qf6 18.Qd3 exd4 19.cxd4 Nxg3+ 20.fxg3 Qg6 21.Nf3 Bd8 22.Rae1 Bf6 23.Qd2 b5 24.Bb1 Bg5 25.Qc3 Qe6 26.e5 Qc4 27.Qxc4 bxc4 28.exd6 Bxf3 29.Rxf3 Rad8 30.Ba2 Rxd6 31.Bxc4 Rxd4 32.b3 a5 33.Rf5 Bd2 34.Rd1 Rfd8 35.Bxf7+ Kh7 36.h4 Bb4 37.Rxd4 Rxd4 38.h5 Rd3 39.Bg6+ Kg8 40.Re5 Rd1+ 41.Kh2 Re1 42.Rf5 Re3 43.Rf7 Rxb3 44.Rc7 Kf8 45.Rxc6 Ra3 46.Re6 Be7 47.Re4 Rc3 48.Kh3 Rc8 49.Kg4 Rb8 50.Kf5 Rb4 51.Re5 Rxa4 52.Rb5 Rd4 53.Rxa5 Rd8 54.g4 Rb8 55.Ra6 Bd8 56.Ra7 Be7 57.Ke6 Bg5 58.Ra6 Kg8 59.Rc6 Rf8 60.Rc7 Rf6+ 61.Kd7 Rf8 62.Be8 Rf1 63.Rc8 Rf8 64.Ra8 Bh4 65.Ra3 Bg5 66.g3 Rf1 67.Ra8 Rf8 68.Rc8 Kh8 69.Rb8 Kg8 70.Rb5 Rf1 71.Bg6 Rf8 72.Rb7 Rf6 73.Rb5 Rf8 74.Be4 Rf7+ 75.Ke6 Re7+ 76.Kd5 Re8 77.Kd4 Bf6+ 78.Kd3 Rd8+ 79.Bd5+ Kh7 80.Ke3 Bg5+ 81.Ke4 Re8+ 82.Kf5 Rf8+ 83.Ke5 Bf6+ 84.Ke6 Bg5 85.Rb7 Rf6+ 86.Kd7 Rf8 87.Rb5 Rd8+ 88.Ke6 Rf8 89.Be4+ Kg8 90.Bg6 Rf6+ 91.Kd7 Rf8 92.Rb7 Rf6 93.Rb8+ Rf8 94.Bh7+ Kf7 95.Rb7 Rd8+ 96.Kc6+ Kf8 97.Rc7 Rd1 98.Bc2 Rd4 99.Bb3 Rxg4 100.Rf7+ Ke8 101.Rxg7 Rxg3 102.Bd5 Bf4 103.Rh7 Rc3+ 104.Kb5 Rc7 105.Rh8+ Ke7 106.Bc6 Kf6 107.Rg8 Rg7 108.Rxg7 Kxg7 1/2-1/2
2022.08.01 Dutch Open 2022
1250998 CM Mollema, Thomas (2235) FM Elgersma, Onno (2316) 1/2-1/2
1.d4 Nf6 2.c4 e6 3.Nf3 Bb4+ 4.Bd2 a5 5.g3 d5 6.Bg2 O-O 7.O-O dxc4 8.Bxb4 axb4 9.Ne5 Nc6 10.Nxc6 bxc6 11.e3 Qd6 12.Qc1 Ba6 13.Rd1 Nd5 14.Nd2 c3 15.Ne4 Qe7 16.Nc5 cxb2 17.Qxb2 Rfb8 18.Rdc1 h6 19.h3 Bc8 20.Nd3 Bd7 21.Rc4 Rb6 22.Kh2 Rab8 23.Qd2 b3 24.axb3 Rxb3 25.Ra7 Be8 26.Nc5 Rb2 27.Rc2 Rxc2 28.Qxc2 Nb4 29.Qe4 Qd6 30.Ra5 Nd5 31.Ra7 Nc3 32.Qc2 Nb5 33.Ra4 Qd8 34.Nd3 Ra8 35.Rb4 Ra6 36.Ne5 Qd6 37.Ra4 Rxa4 38.Qxa4 Qd8 39.Bxc6 Nd6 40.Bxe8 Qxe8 41.Qa7 Qd8 42.Kg1 Ne4 43.Qb7 Nd6 44.Qa7 Ne4 45.Qb7 Nd6 46.Qa7 Ne4 1/2-1/2
2022.07.19 49th Sparkassen Open
1262424 FM Elgersma, Onno (2316) GM Heimann, An (2582) 0-1
1.e4 c5 2.Nf3 d6 3.Bb5+ Nd7 4.d4 cxd4 5.Qxd4 a6 6.Bxd7+ Bxd7 7.Nc3 Rc8 8.a4 e5 9.Qd3 h6 10.Nd2 Be6 11.O-O Nf6 12.Rd1 d5 13.exd5 Nxd5 14.Nde4 Nxc3 15.Qxd8+ Rxd8 16.Rxd8+ Kxd8 17.Nxc3 Bf5 18.Be3 Bxc2 19.Rc1 Bb3 20.Bb6+ Kd7 21.Ne4 Bxa4 22.Rc7+ Ke6 23.Rc8 Bc6 24.Bc5 Bxe4 25.Re8+ Kf5 26.Rxf8 Rxf8 27.Bxf8 Kg6 28.g4 Bf3 29.h3 h5 30.gxh5+ Bxh5 31.Kg2 f5 32.f3 f4 33.h4 a5 34.Bd6 Kf5 35.Bc7 a4 36.Bb6 Ke6 37.Kf2 Kd5 38.Ba5 b5 39.Bc3 g6 40.Ba5 e4 41.fxe4+ Kxe4 42.Bd2 f3 0-1
2022.07.18 49th Sparkassen Open
1262410 IM Beerdsen, Thomas (2500) FM Elgersma, Onno (2316) 1/2-1/2
1.Nc3 d5 2.d4 Nf6 3.Bf4 e6 4.Nb5 Na6 5.e3 c6 6.Nc3 Be7 7.Nf3 O-O 8.h4 c5 9.h5 Bd7 10.Ne5 Be8 11.h6 g6 12.Bg5 Ne4 13.Bxe7 Qxe7 14.Nxe4 dxe4 15.c3 Nc7 16.Qb3 b5 17.Qa3 f6 18.Ng4 b4 19.Qa5 bxc3 20.bxc3 cxd4 21.cxd4 Rb8 22.Rc1 Nd5 23.Bc4 Qb4+ 24.Qxb4 Rxb4 25.a3 Rb2 26.O-O Bb5 27.Bxb5 Rxb5 28.Rc6 Kf7 29.Rfc1 Rb7 30.R1c5 Rd8 31.Ra5 Rdd7 32.Rc8 g5 33.Ra6 Rb6 34.Rh8 Kg6 35.Ra5 Rc7 36.Kh2 Kh5 37.Kh3 f5 38.Ne5 Kxh6 39.Ra8 1/2-1/2
2022.07.12 Titled Tue 12th Jul Early
1274373 FM Elgersma, Onno (2316) FM Omariev, M (2304) 0-1
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.a3 b5 7.Be2 Bb7 8.Bf3 Nbd7 9.O-O Ne5 10.Bg5 e6 11.Be2 Rc8 12.Kh1 Be7 13.f3 Nxe4 14.Bxe7 Nxc3 15.bxc3 Qxe7 16.Qd2 O-O 17.a4 Nc4 18.Bxc4 bxc4 19.Rab1 Bd5 20.Rb6 Ra8 21.Rfb1 Qc7 22.a5 Rfd8 23.Qg5 h6 24.Qg3 Qc5 25.Ne2 Qxa5 26.R6b4 Qc5 27.Nf4 a5 28.Nh5 g6 29.Rb6 Qe3 30.Nf6+ Kg7 31.Ng4 Qxc3 32.Qh4 h5 33.Nf2 Qxc2 34.Qg3 Qf5 35.h4 Qe5 36.Qh3 a4 37.R6b2 a3 38.Rd2 a2 39.Ra1 Qxa1+ 40.Rd1 Qe5 41.f4 Qf6 42.f5 a1=Q 43.fxg6 Qxd1+ 44.Nxd1 Qf1+ 45.Kh2 Qxd1 46.gxf7 Kxf7 47.Qg3 Qd4 48.Qg5 Qf6 49.Qh6 Qxh6 0-1
2022.07.12 Titled Tue 12th Jul Early
1274124 FM Melikhov, E (2292) FM Elgersma, Onno (2316) 1-0
1.d4 Nf6 2.c4 e6 3.Nc3 d5 4.cxd5 exd5 5.Bg5 c6 6.Qc2 Bd6 7.e3 O-O 8.Bd3 h6 9.Bh4 Re8 10.Nge2 a5 11.h3 Na6 12.a3 Nc7 13.O-O Ne6 14.f4 Bd7 15.Rae1 b5 16.e4 dxe4 17.Nxe4 Be7 18.f5 Ng5 19.Nxg5 hxg5 20.Bxg5 Nd5 21.f6 Bxf6 22.Bxf6 Nxf6 23.Nf4 Qb6 24.Qf2 Rxe1 25.Rxe1 Rd8 26.Kh1 Bc8 27.Rd1 b4 28.Bb1 bxa3 29.bxa3 Qc7 30.Qf3 Qd6 31.Nh5 Nxh5 32.Qxh5 g6 33.Qxa5 c5 34.d5 Re8 35.Qb5 Bd7 36.Qd3 Ra8 37.Ba2 Rb8 38.Bc4 Rb2 39.Rd2 Rb8 40.Rf2 Bf5 41.Qe3 Rb1+ 42.Rf1 Rb8 43.g4 Bd7 44.Qf4 Qxf4 45.Rxf4 Ra8 46.d6 Rxa3 47.Rxf7 Bc6+ 48.Kg1 Kh8 49.Rc7 Be4 50.d7 Ra1+ 51.Kf2 Rd1 52.Rc8+ Kg7 53.d8=Q 1-0
2022.07.12 Titled Tue 12th Jul Early
1274647 FM Elgersma, Onno (2316) GM Wagner, De (2569) 1-0
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.d3 Bc5 6.O-O d6 7.Nc3 O-O 8.a3 b5 9.Bb3 Bg4 10.Be3 Nd4 11.Bxd4 Bxd4 12.h3 Bxf3 13.Qxf3 c6 14.Rab1 Bxc3 15.bxc3 Qa5 16.d4 Rfe8 17.Rfe1 Rad8 18.g4 h6 19.h4 d5 20.g5 hxg5 21.hxg5 dxe4 22.Rxe4 Nd5 23.Rh4 e4 24.Qh5 Kf8 25.c4 bxc4 26.Bxc4 Qc3 27.Rb7 Ne7 28.Qxf7# 1-0
2022.07.12 Titled Tue 12th Jul Late
1275169 FM Elgersma, Onno (2316) FM Yanchenko, R (2467) 1/2-1/2
1.e4 e6 2.d4 d5 3.Nd2 c5 4.exd5 exd5 5.Bb5+ Nc6 6.Ngf3 c4 7.O-O Bd6 8.b3 cxb3 9.axb3 Ne7 10.c4 O-O 11.h3 a6 12.Bxc6 Nxc6 13.Re1 Be6 14.Ba3 Bxa3 15.Rxa3 Rc8 16.Ra1 h6 17.c5 Qf6 18.Nf1 Rfe8 19.Ne3 Rcd8 20.Rb1 Bf5 21.Nxf5 Qxf5 22.Qd2 Re4 23.b4 Rde8 24.Rbd1 Rxe1+ 25.Rxe1 Re4 26.Re3 Rxe3 27.Qxe3 Nxb4 28.Qe8+ Kh7 29.Qe7 Qb1+ 30.Kh2 Nd3 31.Qxf7 Nxf2 32.Ng5+ hxg5 33.Qh5+ Kg8 34.Qe8+ Kh7 35.Qh5+ Kg8 36.Qe8+ Kh7 37.Qh5+ 1/2-1/2
2022.07.12 Titled Tue 12th Jul Late
1275443 FM Elgersma, Onno (2316) FM Sibilio, M (2279) 0-1
1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.Nf3 Bg7 5.Be2 O-O 6.O-O a6 7.h3 e6 8.a4 b6 9.Bd3 Bb7 10.Re1 Nc6 11.Bc4 Nb4 12.Bf1 c5 13.Bg5 h6 14.Bh4 g5 15.Bg3 Nh5 16.Bh2 Nf4 17.Rc1 cxd4 18.Nxd4 Qf6 19.Nf3 Rfd8 20.Bg3 Qg6 21.Qd2 d5 22.Bxf4 dxe4 23.Qe3 gxf4 24.Qxf4 exf3 25.Qxb4 Bd4 26.Qc4 Rac8 27.Qb3 Qg3 28.Nd1 Bc5 29.Qc3 Rxd1 0-1
2022.07.12 Titled Tue 12th Jul Early
1273428 FM Elgersma, Onno (2316) Coe, William (2078) 1-0
1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 a6 5.Be2 Nf6 6.Qd3 Nc6 7.Nxc6 dxc6 8.Qxd8+ Kxd8 9.e5 Nd5 10.O-O Bc5 11.a3 b5 12.Nd2 Kc7 13.Ne4 Be7 14.Bd2 Bb7 15.Ba5+ Nb6 16.Nd6 Rab8 17.Bf3 Ba8 18.Rad1 f6 19.Bc3 Nd5 20.Ba5+ Nb6 21.Ne4 Rhd8 22.b3 c5 23.Rxd8 Rxd8 24.Bc3 f5 25.Nd6 Bxf3 26.gxf3 Nd5 27.Ba5+ Nb6 28.Rd1 Kc6 29.c4 Rd7 30.cxb5+ axb5 31.Kf1 Nd5 32.Bd2 Bxd6 33.exd6 Kxd6 34.Ke2 Kc6 35.Rc1 g6 36.h4 e5 37.h5 Ra7 38.hxg6 hxg6 39.Ra1 c4 40.b4 c3 41.Be1 Nxb4 42.Bxc3 Nc2 43.Rc1 1-0
2022.07.12 Titled Tue 12th Jul Early
1274458 FM Elgersma, Onno (2316) CM Miszler, Levente (2243) 1-0
1.e4 e6 2.d4 d5 3.Nd2 f5 4.exf5 exf5 5.Ngf3 Nf6 6.Bd3 Bd6 7.c4 c6 8.O-O O-O 9.Qb3 Kh8 10.Ne5 Qc7 11.Ndf3 Nbd7 12.Bf4 Nh5 13.Bd2 Nxe5 14.dxe5 Bxe5 15.cxd5 Nf4 16.Nxe5 Qxe5 17.Rfe1 Qc7 18.dxc6 Nxd3 19.Qxd3 Qxc6 20.Rac1 Qg6 21.Rc7 Be6 22.Bc3 Rf7 23.Rxf7 Qxf7 24.Qd4 Bxa2 25.h4 h6 26.Re3 a6 27.Rg3 Rg8 28.h5 Qd5 29.Qf4 Kh7 30.f3 Bb3 31.Rg6 Ba4 32.Qc7 1-0
2022.07.12 Titled Tue 12th Jul Early
1273976 FM Elgersma, Onno (2316) GM Oparin, G (2683) 0-1
1.e4 c6 2.d4 d5 3.e5 Bf5 4.Nf3 e6 5.Be2 Nd7 6.O-O Ne7 7.a4 h6 8.a5 Bh7 9.a6 b6 10.Nbd2 Nf5 11.c4 dxc4 12.Nxc4 Be7 13.g4 Nh4 14.Nxh4 Bxh4 15.Nd6+ Kf8 16.f4 Be7 17.f5 Bxd6 18.fxe6 Nxe5 19.dxe5 Bc5+ 20.Kg2 Bg6 21.Ra4 Qxd1 22.Rxd1 fxe6 23.Rd7 Kg8 24.h4 Kh7 25.h5 Bb1 26.b4 b5 27.Ra3 Bxb4 28.Rb3 Be4+ 29.Kg3 Bc5 30.g5 Rhd8 31.g6+ Kg8 32.Rxd8+ Rxd8 33.Bg4 Bd5 34.Rd3 Bb6 35.Rd1 Rf8 36.Bf4 b4 37.Rb1 b3 38.Rd1 b2 39.Rb1 Bd4 40.Bd2 c5 41.Ba5 Bxe5+ 42.Kh3 c4 43.Bc3 Bxc3 0-1
2022.07.12 Titled Tue 12th Jul Early
1273739 GM Melkumyan, H (2634) FM Elgersma, Onno (2316) 1-0
1.Nf3 Nf6 2.c4 e6 3.Nc3 d5 4.e3 c5 5.cxd5 exd5 6.d4 Nc6 7.Bb5 cxd4 8.Nxd4 Bd7 9.Nf3 Bg4 10.O-O Bd6 11.h3 Bh5 12.Be2 O-O 13.b3 Re8 14.Bb2 a6 15.Nd4 Bg6 16.Bf3 Nxd4 17.Qxd4 Be5 18.Qd2 Rc8 19.Rfd1 Bxc3 20.Bxc3 Ne4 21.Bxe4 Bxe4 22.f3 Bg6 23.Rac1 f6 24.Kf2 Qb6 25.Qxd5+ Kh8 26.Bd4 Qb5 27.Qxb5 axb5 28.g4 Kg8 29.h4 Bf7 30.g5 fxg5 31.hxg5 Be6 32.Kg3 Rxc1 33.Rxc1 Rc8 34.Rd1 Rc2 35.Be5 Rc8 36.Rd6 Rc6 37.Rd2 Kf7 38.e4 Rc1 39.Kf4 g6 40.Bf6 Rc8 41.Bd4 Ra8 42.Ke5 Bd7 43.Rh2 Kg8 44.Kd6 Bc6 45.Bf6 Ra6 46.Kc5 Ra8 47.Rd2 Rc8 48.Kb6 Kf7 49.b4 Ra8 50.Rh2 Ra6+ 51.Kc7 Kg8 52.Kb8 Ra3 53.Rf2 Rd3 54.Kc7 Rd7+ 55.Kb6 Rd3 56.Kc5 Kf7 57.Be5 Ra3 58.Kd4 Ke6 59.Bf6 Ra4 60.Kc5 Ra3 61.Rh2 Rxf3 62.Rxh7 Re3 63.Re7# 1-0
2022.07.12 Titled Tue 12th Jul Late
1275276 FM Lettieri, G (2449) FM Elgersma, Onno (2316) 1-0
1.c4 e6 2.Nc3 d5 3.d4 Nf6 4.cxd5 exd5 5.Bg5 c6 6.e3 Bd6 7.Bd3 O-O 8.Nf3 h6 9.Bh4 Re8 10.O-O Nbd7 11.Qc2 a5 12.a3 b6 13.e4 dxe4 14.Nxe4 Be7 15.Qxc6 Rb8 16.Nd6 Bxd6 17.Qxd6 Bb7 18.Ne5 Nxe5 19.dxe5 Qxd6 20.exd6 g5 21.Bg3 Rbd8 22.Bb5 Re6 23.Rfe1 Ne4 24.d7 Nxg3 25.hxg3 Kf8 26.Rxe6 fxe6 27.Rc1 Ke7 28.Rc7 Bd5 29.f3 e5 30.Kf2 Be6 31.Ke3 Bxd7 32.Ke4 1-0
2022.07.12 Titled Tue 12th Jul Early
1274270 FM Hoffmann, As (2185) FM Elgersma, Onno (2316) 0-1
1.d4 Nf6 2.Bg5 d5 3.Nd2 c6 4.e3 Bf5 5.Ngf3 e6 6.Nh4 Bg6 7.Nxg6 hxg6 8.h3 Be7 9.Bd3 Nbd7 10.Bf4 Qb6 11.b3 c5 12.c3 Bd6 13.Bxd6 Qxd6 14.f4 Rc8 15.O-O cxd4 16.cxd4 O-O 17.Nf3 Rc3 18.Ne5 Rfc8 19.Qd2 Nb8 20.Rac1 Qc7 21.Rxc3 Qxc3 22.Qe2 Nc6 23.Nxc6 bxc6 24.Qc2 Qxc2 25.Bxc2 c5 26.Bd3 c4 27.bxc4 dxc4 28.Rc1 Nd5 29.Rxc4 Rxc4 30.Bxc4 Nxe3 31.Bd3 Nd5 32.g3 Nb4 33.Bb1 Nc6 34.Kf2 Nxd4 35.Ke3 Nc6 36.Kd3 Kf8 37.Kc4 Ke7 38.Kc5 Kd7 39.Be4 Ne7 40.g4 Kc7 41.h4 Ng8 42.a4 Nf6 43.Bf3 Nd7+ 44.Kb5 Nb6 45.a5 Nc8 46.Kc5 Nd6 47.h5 gxh5 48.gxh5 Nf5 49.Be4 Nh6 50.Kb5 Ng4 51.Bf3 Nf2 52.Be2 Nh3 53.f5 exf5 54.Bc4 f6 55.Be6 Nf4 56.Bxf5 Nxh5 57.Kc5 Nf4 58.Kd4 Kd6 59.Ke4 Nd5 60.Bh7 Ne7 61.Kf4 g5+ 62.Kg4 Ke5 63.a6 Nc6 64.Bd3 Nb4 65.Bb5 Nc2 66.Bc6 Ne3+ 67.Kg3 Nf5+ 68.Kf2 Nd4 69.Bb7 f5 70.Kg3 Ne6 71.Bc8 Ng7 72.Kf3 Nh5 73.Ke3 Nf6 74.Kf3 f4 75.Bh3 g4+ 76.Bxg4 Nxg4 77.Kxg4 Ke4 78.Kh3 Ke3 79.Kg2 Ke2 0-1
2022.07.12 Titled Tue 12th Jul Early
1274540 FM Jovic, Sta (2027) FM Elgersma, Onno (2316) 0-1
1.c4 e6 2.g3 Nf6 3.Bg2 d5 4.Nf3 Be7 5.O-O O-O 6.d4 dxc4 7.Ne5 Qd6 8.Nxc4 Qa6 9.b3 Rd8 10.Bb2 c5 11.e3 Nc6 12.Re1 b5 13.Ncd2 Bb7 14.a4 b4 15.Nc4 Nd5 16.Bf1 Na5 17.Nbd2 Nc3 18.Qc2 Nxc4 19.Bxc4 Qc6 20.f3 cxd4 21.exd4 Rxd4 22.Bxc3 bxc3 23.Qxc3 Rxd2 24.Qxd2 Bc5+ 25.Re3 Qxf3 0-1
2022.07.12 Titled Tue 12th Jul Late
1274819 Hercegovac, Neven (2187) FM Elgersma, Onno (2316) 1-0
1.d4 Nf6 2.c4 e6 3.Nf3 d5 4.g3 Be7 5.Bg2 O-O 6.O-O dxc4 7.Qc2 a6 8.a4 Nbd7 9.Nbd2 b6 10.Ne5 Nxe5 11.Bxa8 Qxd4 12.Nf3 Nxf3+ 13.Bxf3 Nd5 14.Bd2 b5 15.axb5 axb5 16.Rfd1 Qf6 17.b3 Nb6 18.Ba5 cxb3 19.Qxb3 Nc4 20.Bxc7 Ne5 21.Bxe5 Qxe5 22.Ra5 Qc7 23.Rxb5 Ba6 24.Rb6 Bc4 25.Qb1 Bc5 26.Rc6 Qa7 27.Qc2 Bxf2+ 28.Kg2 Ba6 29.Rxa6 Qxa6 30.Kxf2 Qa7+ 31.Kg2 g6 32.Qc3 Qa6 33.Rd7 Qb6 34.Qf6 h5 35.Be4 Qe3 36.Qf3 Qg5 37.h4 Qe5 38.Qf4 Qc3 39.Qc7 Qb2 40.Bf3 Qb3 41.Be4 Qe3 42.Bf3 Qc3 43.Qxc3 1-0
2022.07.12 Titled Tue 12th Jul Early
1273550 FM Elgersma, Onno (2316) GM Vasquez Schroeder, R (2506) 1-0
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Nd5 e6 7.Nxf6+ Qxf6 8.Nb5 Qd8 9.c4 a6 10.Nc3 Be7 11.Be2 O-O 12.Kf1 b6 13.Be3 Rb8 14.f3 Qc7 15.Qd2 Rd8 16.Rc1 Ne5 17.b3 Bb7 18.g3 f5 19.Kg2 fxe4 20.fxe4 Rf8 21.Rhf1 Bf6 22.Bd4 Nd7 23.Bg4 Rbe8 24.Rcd1 Bxd4 25.Qxd4 Ne5 26.Be2 Rxf1 27.Rxf1 Bc6 28.Kg1 h6 29.Rd1 Rd8 30.Qe3 Be8 31.Rf1 Qc5 32.Kf2 Bc6 33.Qxc5 dxc5 34.Ke3 g5 35.h4 Kg7 36.Rd1 Rxd1 37.Bxd1 Kf6 38.Be2 gxh4 39.gxh4 Ng6 40.h5 Ne5 41.Nd1 Kg5 42.Nf2 Kh4 43.a3 Kg5 44.Nh3+ Kf6 45.Kf4 Be8 46.Nf2 Nc6 47.Ng4+ Kg7 48.Ne5 Nd4 49.Bd1 a5 50.Nd3 Kf6 51.e5+ Ke7 52.Ke4 Bf7 53.b4 Bg8 54.bxc5 Bh7+ 55.Kxd4 Bxd3 56.Kxd3 bxc5 57.Kc3 Kd7 58.Kb3 Kc7 59.Ka4 Kb6 60.Bf3 Ka6 61.Bc6 Kb6 62.Bd7 Ka6 63.Bxe6 Kb6 64.Bd5 1-0
2022.07.12 Titled Tue 12th Jul Early
1273838 GM Indjic, A (2620) FM Elgersma, Onno (2316) 1/2-1/2
1.c4 e6 2.g3 d5 3.Bg2 Nf6 4.Nf3 Be7 5.O-O O-O 6.b3 b6 7.Bb2 Bb7 8.cxd5 exd5 9.d4 c5 10.Nc3 Na6 11.e3 Rc8 12.Ne5 cxd4 13.exd4 Ne4 14.Nxe4 dxe4 15.Qe2 f5 16.g4 Nb4 17.Rfc1 Qd5 18.gxf5 Bg5 19.Rxc8 Rxc8 20.a3 Rc2 21.Qg4 Rxb2 22.Qxg5 Qxd4 23.f6 Qxf2+ 24.Kh1 Qxf6 25.Qxf6 gxf6 26.Nc4 Nc2 27.Rc1 Rxb3 28.h4 Rc3 29.Nd6 e3 30.Nb5 Rc5 31.Bxb7 e2 32.Nd6 e1=Q+ 33.Rxe1 Nxe1 34.Ne4 Rf5 35.Bd5+ Rxd5 36.Nxf6+ Kf7 37.Nxd5 Nd3 38.Kg2 b5 39.Nc7 b4 40.axb4 Nxb4 41.Nb5 a5 42.Nc3 Na6 43.Na4 Ke6 44.Kf3 Kd5 45.Kg4 Nc5 46.Nb6+ Kd4 47.Kg5 a4 48.Nxa4 Nxa4 49.Kh5 Ke5 50.Kh6 Kf6 51.Kxh7 Kf7 52.Kh6 Nc5 53.Kg5 Kg7 54.Kf5 Nd7 55.Ke6 Nf8+ 56.Ke7 Nh7 57.Ke8 Nf6+ 58.Kd8 Kg6 59.Kc7 Kh5 60.Kb6 Kxh4 1/2-1/2
2022.07.12 Titled Tue 12th Jul Late
1275123 Fidalgo, Andre Neves (2261) FM Elgersma, Onno (2316) 0-1
1.e4 c6 2.d4 d5 3.e5 Bf5 4.h4 h5 5.Bd3 Bxd3 6.Qxd3 Qa5+ 7.Nd2 e6 8.Ne2 Ne7 9.c4 Nf5 10.c5 Qa6 11.Qxa6 Nxa6 12.a3 Be7 13.Nf3 Nc7 14.g3 Kd7 15.b4 a5 16.Rb1 axb4 17.axb4 Nb5 18.Be3 Ra3 19.Kd2 Ra2+ 20.Kd3 Rha8 21.Rb3 R8a3 22.Rb1 Ra1 23.Rxa3 Rxb1 24.Ra4 Rd1+ 25.Kc2 Rf1 26.Ng5 Re1 27.Nc3 Nxc3 28.Kxc3 Nxe3 29.fxe3 Bxg5 30.hxg5 Rxe3+ 31.Kd2 Rxg3 32.Ra7 Kc7 33.Ra8 Rxg5 34.Rf8 Rf5 35.Ke3 h4 36.Rh8 g5 37.Rh7 g4 38.Rxh4 Rf3+ 39.Ke2 Rg3 40.Rh7 Rg1 41.Rxf7+ Kb8 42.Rf6 g3 43.Rxe6 Rb1 44.Re8+ Kc7 45.Kf3 Rxb4 46.Kxg3 Rxd4 47.Re7+ Kc8 48.e6 Re4 49.Kf3 Kd8 50.Rd7+ Ke8 51.Rxb7 Rxe6 52.Kf4 Re4+ 53.Kf3 Rc4 54.Ke3 Rxc5 55.Kd4 Rc4+ 56.Ke5 Kf8 57.Kf6 Rf4+ 58.Ke5 Rh4 59.Kf6 Rh6+ 60.Kf5 Ke8 61.Ke5 Kd8 62.Rg7 Kc8 63.Kd4 Rd6 64.Kc5 Rd7 65.Rg8+ Kb7 66.Rg1 Rf7 67.Rb1+ Kc7 68.Ra1 Rf4 69.Ra7+ Kb8 70.Rh7 Rc4+ 71.Kb6 Kc8 0-1
2022.07.12 Titled Tue 12th Jul Late
1274873 FM Elgersma, Onno (2316) Silvestre, Christian (1942) 1-0
1.e4 c6 2.d4 d5 3.e5 a6 4.Nf3 Bg4 5.Be2 e6 6.O-O c5 7.c3 Nc6 8.Be3 Nge7 9.dxc5 Bxf3 10.Bxf3 Nxe5 11.Bd4 N5c6 12.Re1 Nf5 13.Bg4 Nfxd4 14.cxd4 h5 15.Bf3 Be7 16.Nc3 Qa5 17.a3 Qc7 18.b4 Qf4 19.Bxd5 exd5 20.Nxd5 Qb8 21.Qf3 Qd8 22.Nxe7 Nxe7 23.Qxb7 Kf8 24.Rxe7 Qxe7 25.Qxa8+ Qe8 26.Qxe8+ Kxe8 27.d5 Kd7 28.Re1 Rb8 29.d6 a5 30.h4 axb4 31.axb4 Rxb4 32.Re7+ Kc6 33.Rc7+ Kd5 34.d7 Rb1+ 35.Kh2 1-0
2022.06.28 Titled Tue 28th Jun Early
1286919 Johnson, Be (2061) FM Elgersma, Onno (2312) 0-1
1.Nf3 Nf6 2.c4 c5 3.Nc3 g6 4.d4 cxd4 5.Nxd4 Bg7 6.e4 d6 7.Be2 O-O 8.Be3 Nc6 9.O-O Bd7 10.Rc1 Nxd4 11.Bxd4 Bc6 12.Qd3 a5 13.h3 a4 14.Nd5 Bxd5 15.exd5 Nd7 16.Bxg7 Kxg7 17.b3 axb3 18.axb3 Qb6 19.h4 Ra2 20.h5 Nf6 21.Rc3 Rfa8 22.Qe3 Qxe3 23.Rxe3 Kf8 24.hxg6 hxg6 25.Rc1 Ra1 26.Rc3 Rxc1+ 27.Rxc1 Ra2 28.Kf1 Rb2 29.Bd1 Ne4 30.Bc2 Nc5 31.Bd1 Nd3 32.Rc2 Rxb3 33.Ra2 Rb2 34.Ra8+ Kg7 35.f3 Rf2+ 36.Kg1 Rd2 37.Ba4 Ra2 38.Kf1 Nc5 39.Ra7 Rxa4 0-1
2022.06.28 Titled Tue 28th Jun Early
1287983 FM Fernandez Siles, L (2220) FM Elgersma, Onno (2312) 0-1
1.d4 Nf6 2.c4 e6 3.Nc3 d5 4.cxd5 exd5 5.Bg5 c6 6.e3 Bd6 7.Bd3 O-O 8.Nf3 h6 9.Bh4 Be6 10.O-O Nbd7 11.e4 dxe4 12.Nxe4 Be7 13.Qe2 Nd5 14.Bg3 N7f6 15.Rad1 Nxe4 16.Qxe4 Nf6 17.Qe2 Bg4 18.Be5 Re8 19.h3 Bxf3 20.Qxf3 Qd5 21.Qg3 Rad8 22.Rfe1 Kf8 23.b3 b5 24.Re3 Bd6 25.Rde1 Bxe5 26.dxe5 Nd7 27.f4 Nc5 28.Bc2 Qd2 29.R3e2 Qd4+ 30.Kh2 h5 31.Qg5 Ne6 32.Qxh5 Qxf4+ 33.g3 Qh6 34.Qg4 Rd4 35.Qf5 Rd2 36.Qf2 Red8 37.Rf1 Rxe2 38.Qxe2 Rd2 0-1
2022.06.28 Titled Tue 28th Jun Early
1287737 FM Elgersma, Onno (2312) IM Araujo Sanchez, Josue (2256) 0-1
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.a3 g6 7.Be2 Bg7 8.Be3 O-O 9.Qd2 Nc6 10.h4 Nxd4 11.Bxd4 Be6 12.O-O-O Qa5 13.Kb1 Rfc8 14.h5 Rc7 15.hxg6 hxg6 16.g4 Rac8 17.g5 Rxc3 18.gxf6 Rxa3 19.Qxa5 Rxa5 20.fxg7 f6 21.Rh8+ Kxg7 22.Rxc8 Bxc8 23.Rg1 Ra4 24.Bc3 Rxe4 25.Bd3 Rg4 26.Rxg4 Bxg4 27.Be4 Bc8 28.Kc1 Kf7 29.Kd2 f5 30.Bg2 g5 31.Ke2 e6 32.Ke3 Ke7 33.Bb4 b6 34.Bc3 Bd7 35.Bd4 b5 36.Ba7 a5 37.c3 e5 38.Bf1 g4 39.Bb6 a4 40.Bg2 Ke6 41.f4 gxf3 42.Bxf3 d5 43.Bg2 f4+ 44.Kf3 Kd6 45.Bf1 Kc6 46.Ba7 Kd6 47.Bb8+ Ke6 48.Bh3+ Ke7 49.Bxd7 e4+ 50.Kxf4 Kxd7 51.Ba7 Ke6 52.Bc5 Kd7 53.Ke5 Kc6 54.Be3 b4 55.Kd4 b3 56.Bc1 Kb5 57.Kxd5 e3 58.Bxe3 a3 59.c4+ Ka4 0-1
2022.06.28 Titled Tue 28th Jun Early
1288249 FM Elgersma, Onno (2312) WGM Pourkashiyan, A (2322) 1/2-1/2
1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.c4 Nb6 5.exd6 exd6 6.Nc3 Be7 7.Bd3 O-O 8.Nge2 Nc6 9.O-O Bg4 10.f3 Bh5 11.b3 Bg6 12.Be3 d5 13.c5 Nd7 14.Nxd5 Nf6 15.Nxf6+ Bxf6 16.Bxg6 hxg6 17.Qd3 Re8 18.Rad1 Nb4 19.Qd2 Nxa2 20.Bf2 Rxe2 21.Qxe2 Nc3 22.Qc4 Nxd1 23.Rxd1 c6 24.d5 cxd5 25.Qxd5 Qxd5 26.Rxd5 Re8 27.Rd7 Re7 28.Rxe7 Bxe7 29.Kf1 Kf8 30.Ke2 Ke8 31.Kd3 Kd7 32.Kc4 Kc6 33.b4 a6 34.g4 Bf6 35.h3 Be5 36.Be1 Bf6 37.Bd2 Be5 38.Bg5 Ba1 39.Be7 Be5 40.Bg5 Bb2 41.Bd2 Be5 42.f4 Bb2 43.f5 gxf5 44.gxf5 Bf6 45.Be1 Be5 46.h4 g6 47.fxg6 fxg6 48.Bf2 Bf4 49.Bd4 Bd2 50.Bf6 Kd7 51.b5 a5 52.Kd5 a4 53.c6+ bxc6+ 54.bxc6+ Kc8 55.Bb2 Bb4 56.Ke6 Be1 57.Bf6 a3 58.Kf7 a2 59.Kxg6 Bxh4 60.Be5 Bg3 61.Ba1 Kc7 62.Kf5 Kxc6 63.Ke4 Kc5 64.Kd3 Kb4 65.Kc2 Ka3 66.Bb2+ Ka4 67.Ba1 Ka3 68.Bb2+ Kb4 69.Ba1 Ka3 1/2-1/2
2022.06.28 Titled Tue 28th Jun Early
1287508 CM Carrasco Miranda, A (2285) FM Elgersma, Onno (2312) 0-1
1.d4 Nf6 2.c4 e6 3.g3 d5 4.Bg2 Be7 5.Nf3 O-O 6.O-O dxc4 7.Qc2 a6 8.a4 Nbd7 9.Qxc4 b5 10.Qc2 Bb7 11.Bf4 c5 12.dxc5 Nxc5 13.Rd1 Qc8 14.axb5 axb5 15.Rxa8 Bxa8 16.Nbd2 Nd5 17.Ng5 g6 18.Rc1 Qb7 19.Nge4 Nb4 20.Nxc5 Qxg2# 0-1
2022.06.28 Titled Tue 28th Jun Late
1288560 FM Elgersma, Onno (2312) Yuan, Qingyu (2373) 0-1
1.e4 c6 2.d4 d5 3.e5 c5 4.Nf3 cxd4 5.Nxd4 Nc6 6.Nxc6 bxc6 7.Bd3 e6 8.O-O a5 9.Nd2 Ne7 10.Kh1 Ng6 11.f4 Be7 12.Qe2 O-O 13.Nf3 Qb6 14.Be3 c5 15.c4 d4 16.Bc1 Bb7 17.Nd2 f5 18.exf6 Rxf6 19.Ne4 Rf7 20.Qg4 Raf8 21.b3 Ne5 22.Qg3 Nxd3 23.Qxd3 Qc6 24.Re1 Rxf4 25.Bxf4 Rxf4 26.Qg3 Rxe4 27.Rxe4 Qxe4 28.Rf1 h6 29.h3 Kh7 30.Re1 Qc6 31.Rf1 Bf6 32.h4 Qe4 33.h5 Qh4+ 34.Qxh4 Bxh4 35.Rf4 Bg5 36.Rf7 Be4 37.Ra7 d3 38.Rd7 d2 0-1
2022.06.28 Titled Tue 28th Jun Early
1288320 Manukian, Ar (2196) FM Elgersma, Onno (2312) 0-1
1.e4 c6 2.d4 d5 3.e5 Bf5 4.Nf3 e6 5.c4 Ne7 6.Nc3 Nd7 7.Nh4 Bg6 8.Bg5 Qb6 9.Qd2 Nf5 10.Nxf5 Bxf5 11.cxd5 cxd5 12.Bb5 Bb4 13.O-O h6 14.Bxd7+ Kxd7 15.Be3 Rac8 16.Rfc1 Bxc3 17.bxc3 Qa6 18.h3 b6 19.a4 Qd3 20.Qb2 Rc6 21.a5 b5 22.a6 Rb8 23.Qb4 Qc4 24.g4 Be4 25.g5 Qe2 26.Kh2 hxg5 27.Rg1 f6 28.Rae1 Qf3 29.Rg3 Qf5 30.f4 Rxa6 31.Qb2 b4 32.cxb4 Rc6 33.Re2 a5 34.b5 Rcb6 35.Qa3 Rh8 36.Qxa5 Rhb8 37.Qa7+ R8b7 38.Qa8 Rxb5 39.Qf8 Rb1 40.Qxg7+ Kc6 0-1
2022.06.28 Titled Tue 28th Jun Late
1288837 IM Samsonkin, A (2428) FM Elgersma, Onno (2312) 0-1
1.d4 Nf6 2.Bf4 e6 3.e3 c5 4.c3 d5 5.Nf3 Bd6 6.Bg3 O-O 7.Nbd2 Qc7 8.Bxd6 Qxd6 9.Ne5 b6 10.Bd3 Bb7 11.f4 Ne4 12.Bxe4 dxe4 13.Ndc4 Qc7 14.dxc5 Qxc5 15.Qd6 Qxd6 16.Nxd6 Ba6 17.Nxe4 f6 18.Nf3 Nc6 19.Rd1 Rfd8 20.Kf2 Kf7 21.Nd4 Nxd4 22.Rxd4 Rxd4 23.cxd4 Ke7 24.Rc1 Rc8 25.Rxc8 Bxc8 26.Nc3 Bb7 27.e4 Bc6 28.Ke3 Kd6 29.b4 a5 30.a3 axb4 31.axb4 Be8 32.g4 h6 33.h4 Bd7 34.g5 hxg5 35.hxg5 Be8 36.gxf6 gxf6 37.e5+ Ke7 38.Ne4 f5 39.Nd6 Bc6 40.b5 Bd7 41.d5 exd5 42.Kd4 Ke6 43.Kd3 Ke7 44.Kd4 Ke6 45.Kc3 Ke7 46.Kb4 Ke6 47.Kc3 Ke7 48.Kd3 Be6 49.Kd4 Kd7 50.Nb7 Kc7 51.Nd6 Kd7 52.Kd3 Kc7 53.Ne8+ Kd7 54.Ng7 Bf7 55.Kd4 Be6 56.Ke3 Bf7 0-1
2022.06.28 Titled Tue 28th Jun Early
1287308 CM Jiganchine, R (2205) FM Elgersma, Onno (2312) 0-1
1.Nf3 Nf6 2.c4 c5 3.e3 g6 4.d4 cxd4 5.exd4 d5 6.Nc3 Bg7 7.Qb3 dxc4 8.Bxc4 O-O 9.O-O Nc6 10.Ne5 e6 11.Nxc6 bxc6 12.Be3 Nd5 13.Rad1 a5 14.Ne4 a4 15.Qd3 Rb8 16.b3 Nb4 17.Qe2 axb3 18.axb3 Ra8 19.Nc5 Ra2 20.Qf3 Nd5 21.h3 Qh4 22.Ra1 Rxa1 23.Rxa1 Bxd4 24.g3 Qf6 25.Qxf6 Bxf6 26.Re1 Nxe3 27.fxe3 Rd8 28.Ne4 Be5 29.g4 Kg7 30.Re2 h6 31.Kg2 f5 32.Nc5 Kf6 33.Nd3 Bc7 34.e4 e5 35.gxf5 gxf5 36.Nc5 f4 37.Kf3 Bb6 38.b4 Bxc5 39.bxc5 Rd4 40.Rc2 Bxh3 41.Ba6 Be6 42.Bb7 Rd8 43.Bxc6 Rc8 44.Bd5 Rc7 45.c6 Ke7 46.Rh2 Bxd5 47.exd5 Kd6 48.Ke4 Rh7 49.Rc2 h5 50.Rg2 h4 51.Rg6+ Kc5 52.Kxe5 h3 53.Rg1 h2 54.Rc1+ Kb5 55.Rh1 f3 56.Kd6 f2 57.c7 Kb6 0-1
2022.06.28 Titled Tue 28th Jun Early
1287087 FM Elgersma, Onno (2312) FM Goltsev, Dmitry (2294) 0-1
1.e4 e6 2.d4 d5 3.Nd2 c5 4.exd5 exd5 5.Ngf3 Nc6 6.Bb5 Nf6 7.O-O Be7 8.dxc5 Bxc5 9.Re1+ Be6 10.Nb3 Bb6 11.Nbd4 O-O 12.c3 Nxd4 13.Nxd4 Ne4 14.Be3 a6 15.Bd3 Qd6 16.a4 Rfe8 17.a5 Bc7 18.f4 Bd7 19.Rf1 Nxc3 20.bxc3 Rxe3 21.Qd2 Rae8 22.g3 Bb8 23.Rae1 Qe7 24.Rxe3 Qxe3+ 25.Qxe3 Rxe3 26.Rd1 Bg4 27.Rd2 Re1+ 28.Kf2 Rc1 29.Rc2 Rh1 30.Kg2 Ra1 31.h3 Bc8 32.Re2 Kf8 33.Bxh7 Rxa5 34.Bf5 Rc5 35.Bxc8 Rxc8 36.Re3 Ba7 37.Rd3 Bxd4 38.Rxd4 Rxc3 39.Rxd5 b5 40.Rd7 a5 41.Ra7 a4 42.g4 Rb3 43.f5 a3 44.g5 b4 45.g6 fxg6 46.fxg6 Rb2+ 47.Kg3 a2 48.Rf7+ Ke8 49.Ra7 b3 50.h4 Rb1 51.h5 a1=Q 52.Rxa1 Rxa1 0-1
2022.06.28 Titled Tue 28th Jun Early
1288123 GM Preotu, Razvan (2445) FM Elgersma, Onno (2312) 1-0
1.e4 c6 2.Nc3 d5 3.Nf3 dxe4 4.Nxe4 Nf6 5.Qe2 Na6 6.d4 Nxe4 7.Qxe4 Qd5 8.Qxd5 cxd5 9.c3 f6 10.Bf4 Nb8 11.Bd3 Nc6 12.O-O Bg4 13.Rfe1 Kf7 14.Nd2 e6 15.Nb3 Be7 16.f3 Bf5 17.Bxf5 exf5 18.a4 Rhe8 19.Kf2 g5 20.Bd2 Bf8 21.a5 a6 22.Nc1 Rxe1 23.Bxe1 Re8 24.Nd3 Bd6 25.Bd2 f4 26.h4 h6 27.b3 Kg6 28.Ra4 Kf5 29.h5 Ke6 30.Ne1 Kd7 31.Nc2 Bc7 32.c4 Ne7 33.Nb4 Bd6 34.Nxd5 Nxd5 35.cxd5 Rc8 36.Rc4 Rb8 37.Ke2 b6 38.axb6 Rxb6 39.b4 Rb5 40.Kd3 Rxd5 41.Rc1 Rb5 42.Kc4 Kc6 43.Ra1 Kb7 44.d5 Be5 45.Ra5 Rxa5 46.bxa5 Bd6 47.Bb4 Kc7 48.Bxd6+ Kxd6 49.Kd4 Kd7 50.Kc5 Kc7 51.d6+ Kd7 52.Kd5 f5 53.Ke5 Kc6 54.Ke6 g4 55.d7 1-0
2022.06.28 Titled Tue 28th Jun Late
1288653 CM Winkels, M (1940) FM Elgersma, Onno (2312) 0-1
1.e4 c6 2.d4 d5 3.f3 e6 4.Nc3 Qb6 5.Nh3 Nf6 6.Nf2 Bb4 7.Be2 O-O 8.e5 Nfd7 9.O-O Be7 10.f4 c5 11.Be3 Nc6 12.dxc5 Nxc5 13.Rb1 Qc7 14.b4 Nd7 15.b5 Na5 16.Qd3 Nc4 17.Bd4 Nc5 18.Qg3 Nd2 19.f5 exf5 20.Nxd5 Qd8 21.c4 Nxf1 22.Rxf1 Ne6 23.Bb2 Kh8 24.Nh3 f4 25.Nhxf4 Nxf4 26.Rxf4 Be6 27.Bf3 a6 28.Be4 Bxd5 29.Bxd5 Qb6+ 30.Kh1 axb5 0-1
2022.06.28 Titled Tue 28th Jun Early
1287890 FM Elgersma, Onno (2312) CM Mogirzan, Matei-Valeriu (1813) 0-1
1.e4 c5 2.Nf3 b6 3.d4 cxd4 4.Nxd4 Bb7 5.Nc3 e6 6.Bd3 Nc6 7.Nxc6 Bxc6 8.O-O d6 9.a4 a6 10.f4 Nf6 11.f5 Be7 12.Kh1 e5 13.Bg5 Nd7 14.Bxe7 Qxe7 15.Bc4 Nf6 16.Qd3 O-O 17.Rad1 Rfd8 18.Bxa6 d5 19.exd5 Nxd5 20.Nxd5 Bxd5 21.Qe2 Qg5 22.Bb5 h5 23.Qf2 Rac8 24.c3 h4 25.h3 Rd6 26.Kh2 Rcd8 27.Rde1 e4 28.Qe3 Qf6 29.Kh1 g5 30.fxg6 Qxg6 31.Rf4 Qg7 32.Ref1 Rg6 33.R4f2 Rg3 34.Qxb6 Rf8 35.Bc6 e3 36.Bxd5 exf2 37.Qxf2 Rg5 38.Bf3 Rg6 39.Qxh4 Rh6 40.Qf2 Rg6 41.Kh2 Re8 42.a5 Re5 43.a6 Rxa6 44.Rd1 Rg6 45.Rd8+ Kh7 46.Rd4 Reg5 47.Rh4+ Kg8 48.c4 Qe5+ 49.Kh1 Rd6 50.Rg4 Rxg4 51.Bxg4 Ra6 52.g3 Ra1+ 53.Kg2 Ra2 54.Qf4 Rxb2+ 55.Kf3 Qe2# 0-1
2022.06.28 Titled Tue 28th Jun Late
1288418 FM Elgersma, Onno (2312) Gulecyuz, Deniz (1975) 1-0
1.e4 c5 2.Nf3 Nc6 3.Bb5 g6 4.O-O Bg7 5.Re1 Nf6 6.e5 Nd5 7.Nc3 Nc7 8.Bxc6 dxc6 9.Ne4 b6 10.Nf6+ Kf8 11.Ne4 Bf5 12.d3 h6 13.a3 Kg8 14.a4 a5 15.b3 Kh7 16.Bb2 Ne6 17.Ng3 Bg4 18.h3 Bxf3 19.Qxf3 Qe8 20.h4 Rf8 21.h5 Rd8 22.Qg4 Qd7 23.Re4 Ng5 24.Qxd7 Rxd7 25.Re2 Ne6 26.Rae1 Rfd8 27.Re4 Rd5 28.f4 Nd4 29.Bxd4 Rxd4 30.Kf2 b5 31.Rxd4 Rxd4 32.Re4 Rd5 33.Kf3 gxh5 34.Nxh5 Kg6 35.Ng3 e6 36.Nf1 h5 37.Ne3 Rd8 38.Nd1 c4 39.bxc4 bxa4 40.c5 Rd5 41.Rxa4 Rxc5 42.c4 Bxe5 43.fxe5 Rxe5 44.Ne3 Kg5 45.d4 1-0
2022.06.28 Titled Tue 28th Jun Early
1287415 FM Elgersma, Onno (2312) IM Lou Yiping (2485) 0-1
1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 5.Nc3 Qc7 6.Qd3 Nf6 7.Ndb5 Qb8 8.Qg3 d6 9.Be3 a6 10.Nd4 h5 11.f3 Ne5 12.O-O-O b5 13.Bg5 b4 14.Na4 Bd7 15.b3 Bxa4 16.bxa4 Qc7 17.f4 Nxe4 18.Qe3 Nxg5 19.fxe5 Qc3 20.Qxc3 bxc3 21.exd6 Bxd6 22.Nb3 Ba3+ 23.Kb1 Ke7 24.Bd3 f5 25.Rhe1 Kf6 26.h4 Nf7 27.Bc4 Ne5 28.Be2 Rhd8 29.Bxh5 Rxd1+ 30.Rxd1 Rh8 31.Be2 Rxh4 32.Bxa6 Rxa4 33.Bf1 g5 34.Rd4 Ra7 35.Bb5 f4 36.Ra4 Rxa4 37.Bxa4 g4 38.Bb5 f3 39.gxf3 g3 40.Bf1 Nxf3 41.Ka1 Nd2 0-1
2022.06.19 HSG Open 2022
1297099 FM Elgersma, Onno (2312) Honkoop, Gilian (2208) 1-0
1.c4 e5 2.e3 Nf6 3.d4 exd4 4.exd4 d5 5.Nc3 Be7 6.Nf3 O-O 7.h3 Be6 8.cxd5 Nxd5 9.Bd3 Nc6 10.O-O h6 11.Bb1 Nf6 12.Re1 Re8 13.a3 Na5 14.Bc2 Nc4 15.Qd3 Nd6 16.Qd1 Bf5 17.Bb3 Bf8 18.Ne5 c6 19.Bf4 Be6 20.Bc2 Bf5 21.Ba4 Rc8 22.Rc1 Nfe4 23.Bb3 Ng5 24.h4 Ne6 25.Bg3 Bh7 26.Qh5 Rc7 27.Nxf7 Nxf7 28.Bxc7 Qxc7 29.Bxe6 Re7 30.Nd5 cxd5 31.Rxc7 Rxc7 32.Qxd5 1-0
2022.06.19 HSG Open 2022
1297110 Pham, Khoi (2244) FM Elgersma, Onno (2312) 1-0
1.e4 c6 2.d4 d5 3.e5 Bf5 4.h4 h5 5.Bd3 Bxd3 6.Qxd3 Qa5+ 7.Nd2 e6 8.Nf3 Nh6 9.O-O Nf5 10.Nb3 Qa6 11.Qd1 b6 12.Bg5 c5 13.c3 Nc6 14.dxc5 Bxc5 15.Nxc5 bxc5 16.Re1 Qb7 17.b3 Qd7 18.Nd2 a5 19.Nf1 a4 20.Ne3 Nxe3 21.Rxe3 d4 22.cxd4 cxd4 23.Rd3 Qd5 24.Rc1 axb3 25.axb3 Qe4 26.Rc5 Ra6 27.b4 O-O 28.b5 Nb4 29.Rxd4 1-0
2022.06.18 HSG Open 2022
1297074 FM Elgersma, Onno (2312) De Winter, Arthur (2126) 1-0
1.d4 Nf6 2.Nf3 g6 3.c4 Bg7 4.e3 O-O 5.Be2 d6 6.Nc3 Nbd7 7.O-O e5 8.Qc2 Re8 9.Rd1 e4 10.Nd2 Qe7 11.b4 Nf8 12.a4 h5 13.a5 Bf5 14.a6 b6 15.b5 Ne6 16.Nf1 Ng4 17.h3 Nxf2 18.Kxf2 Bxd4 19.Kg1 Be5 20.Bb2 Ng5 21.Nd5 Nxh3+ 22.gxh3 Qg5+ 23.Kh1 Bxh3 24.Bxh5 Bxf1 25.Bxe5 Rxe5 26.Rxf1 Kg7 27.Nf4 Rh8 28.Rf2 Rxh5+ 29.Nxh5+ Qxh5+ 30.Rh2 Qf3+ 31.Qg2 Qxe3 32.Rf1 f5 33.Rh3 Qd4 34.Qh2 e3 35.Rg1 Qe4+ 36.Qg2 e2 37.Qxe4 Rxe4 38.Re1 f4 39.Rf3 Kf6 40.Rf2 Rxc4 41.Rexe2 d5 42.Rc2 Ke6 43.Rxc4 dxc4 44.Rxf4 Kd5 45.Rf7 Kc5 46.Rxc7+ Kxb5 47.Rxa7 c3 48.Ra8 c2 49.Rc8 Kxa6 50.Rxc2 b5 51.Kg1 b4 52.Kf1 Kb5 53.Ke1 Ka4 54.Kd1 b3 55.Rg2 1-0
2022.06.18 HSG Open 2022
1297083 IM Beerdsen, Thomas (2494) FM Elgersma, Onno (2312) 1-0
1.e4 c6 2.d4 d5 3.e5 Bf5 4.h4 h5 5.c4 e6 6.Nc3 dxc4 7.Bxc4 Nd7 8.Nge2 Be7 9.Ng3 Bg6 10.Nge2 Bf5 11.g3 Nh6 12.Bf4 Qb6 13.Qd2 Rd8 14.Rd1 Ng4 15.Qc1 Qb4 16.Bb3 Be4 17.O-O Bf3 18.Bd2 Qb6 19.Bg5 Bxg5 20.Qxg5 O-O 21.Bc2 c5 22.Nf4 Nh6 23.Ne4 Bxe4 24.Bxe4 f5 25.Nxh5 Rf7 26.dxc5 Qc7 27.Bxb7 Rb8 28.Bg2 Nxc5 29.Rd6 Qe7 30.Rc1 Ne4 31.Bxe4 fxe4 32.Nf6+ Kh8 33.Nxe4 Nf5 34.Qh5+ 1-0
2022.06.17 HSG Open 2022
1297052 FM Elgersma, Onno (2312) Straat, E jr (2017) 1-0
1.e4 e5 2.Nf3 Nf6 3.Nc3 Nc6 4.Bb5 Bb4 5.d3 d6 6.O-O Bg4 7.h3 Bd7 8.Ne2 h6 9.Ng3 Nd4 10.Bxd7+ Qxd7 11.Nxd4 exd4 12.Qf3 Bc5 13.Nf5 Rg8 14.Nxg7+ Rxg7 15.Qxf6 Rg6 16.Qf5 O-O-O 17.Qxd7+ Kxd7 18.f4 h5 19.f5 Rg7 20.Bh6 Rg3 21.Bf4 Rg7 22.Kf2 h4 23.Rh1 Rdg8 24.Rag1 c6 25.g4 f6 26.Kf3 Bb6 27.Rg2 Bd8 28.Rhg1 Be7 29.c3 dxc3 30.bxc3 c5 31.d4 cxd4 32.cxd4 Rc8 33.Rc1 Rxc1 34.Bxc1 Rg8 35.Rc2 Rg7 36.Bf4 Rg8 37.e5 dxe5 38.dxe5 fxe5 39.Bxe5 Bd8 40.Rd2+ Ke7 41.Ke4 1-0
2022.06.17 HSG Open 2022
1297063 Labruyere, Roger (2103) FM Elgersma, Onno (2312) 0-1
1.e4 c6 2.d4 d5 3.e5 Bf5 4.Nd2 e6 5.Nb3 Nd7 6.Nf3 a6 7.Be3 Ne7 8.Bd3 Bxd3 9.Qxd3 Nf5 10.Bg5 Be7 11.h4 h6 12.Bxe7 Nxe7 13.h5 Rc8 14.c3 c5 15.dxc5 Nxc5 16.Nxc5 Rxc5 17.Nd4 Qb6 18.b4 Rc4 19.O-O O-O 20.Rac1 Rfc8 21.Nb3 Qc7 22.Rfe1 b6 23.Re3 Nf5 24.Re2 d4 25.g4 Ne7 26.Nxd4 Nd5 27.Ree1 Nxb4 28.Qd2 Nd5 29.g5 Rxc3 30.Ne2 Rc2 31.Qd4 Rxe2 32.Rxc7 Rxe1+ 33.Kg2 Rxc7 34.gxh6 gxh6 35.Qd2 Rxe5 36.Qxh6 Rf5 37.Qd2 Rxh5 38.Kf3 Rf5+ 39.Kg3 f6 40.Qe2 Rg7+ 41.Kh2 Nf4 0-1
2022.06.04 14th BPB Limburg Open
1358374 FM Elgersma, Onno (2312) GM Warmerdam, Max (2613) 0-1
1.e4 c5 2.Nf3 d6 3.Bb5+ Bd7 4.Bxd7+ Nxd7 5.c4 Ngf6 6.Nc3 Ne5 7.O-O Nfd7 8.Nxe5 dxe5 9.d3 e6 10.Qg4 h5 11.Qe2 Bd6 12.a3 Nb8 13.Rb1 Nc6 14.Be3 b6 15.Na2 Qe7 16.Qd2 O-O 17.b4 g6 18.b5 Nd4 19.Bxd4 exd4 20.f4 a6 21.Qc1 axb5 22.Rxb5 Bc7 23.Rb3 f5 24.Qe1 e5 25.exf5 Rxf5 26.Rb1 Rxa3 27.Nc1 e4 28.g3 e3 29.Qe2 Qf7 30.h4 Qd7 31.Rb3 Ra1 32.Rb2 Rf8 33.Ra2 Rxa2 34.Qxa2 Qc6 35.Qe2 Kg7 36.Nb3 Ra8 37.Na1 Bd6 38.Nc2 Ra2 39.Ra1 Rxa1+ 40.Nxa1 b5 41.cxb5 Qxb5 42.Nc2 Qb2 43.Kf1 Bc7 44.Ne1 Qxe2+ 45.Kxe2 Kf6 46.Nc2 Kf5 47.Kf3 Ba5 48.Na3 Be1 49.Nc4 e2 50.Nd6+ Ke6 51.Ne4 Bxg3 52.Kxe2 Bxh4 53.Nxc5+ Kf5 54.Kf3 Be7 55.Nb3 Bf6 56.Nc1 Bg7 57.Ne2 h4 58.Ng1 Bf8 59.Ne2 Bc5 60.Ng1 Bb4 61.Ne2 Bc3 62.Ng1 Bd2 63.Ne2 Be3 64.Kg2 Kg4 65.Kh2 Bxf4+ 0-1
2022.05.29 Groninger Combinatie Open
1352680 FM Elgersma, Onno (2303) Van Foreest, Machteld (2287) 1/2-1/2
1.e4 c5 2.Nf3 e6 3.g3 Nc6 4.Bg2 Nf6 5.Qe2 d5 6.exd5 Nxd5 7.O-O Be7 8.Rd1 Bf6 9.Nc3 O-O 10.Ne4 Be7 11.d3 Qb6 12.c3 Rd8 13.a4 Na5 14.Ned2 Bf6 15.Nc4 Qa6 16.Nxa5 Qxa5 17.Bg5 Bxg5 18.Nxg5 h6 19.Ne4 Bd7 20.Re1 Bc6 21.Nd2 Ne7 22.Nc4 Qa6 23.Be4 Bxe4 24.dxe4 Nc6 25.f4 Rd7 26.e5 Rad8 27.Nd6 Qxe2 28.Rxe2 b6 29.Rae1 Ne7 30.Kf2 Nc8 31.Ne4 Rd3 32.Rc1 Kf8 33.Rcc2 Ke7 34.Red2 Rxd2+ 35.Nxd2 Kd7 36.Ne4 Kc6 37.Ke2 Kb7 38.h4 Rd7 39.h5 Ne7 40.g4 Nd5 41.Kf3 Kc6 42.Rd2 Ne7 43.Rxd7 Kxd7 44.Nd6 f5 45.exf6 gxf6 46.Nf7 Ng8 47.Ke4 Ke7 48.Nh8 f5+ 49.gxf5 Nf6+ 50.Ke5 Ng4+ 51.Ke4 1/2-1/2
2022.05.29 Groninger Combinatie Open
1352686 Hummel, Pau (2117) FM Elgersma, Onno (2303) 0-1
1.d4 Nf6 2.Nf3 e6 3.c4 d5 4.cxd5 exd5 5.Bg5 c6 6.Nc3 Be7 7.Qc2 O-O 8.e3 h6 9.Bh4 Be6 10.Bd3 Nbd7 11.O-O Rc8 12.Qb1 a5 13.a3 b5 14.Ne2 Bg4 15.Nd2 Qb6 16.h3 Bxe2 17.Bxe2 c5 18.dxc5 Bxc5 19.b4 axb4 20.axb4 Bxe3 21.Nf3 Bf4 22.Bxf6 Nxf6 23.Ra5 Ne4 24.Qd3 Nxf2 25.Rxf2 Be3 26.Rxb5 Bxf2+ 27.Kf1 Rc1+ 28.Bd1 Rxd1+ 29.Qxd1 Qxb5+ 30.Kxf2 Qxb4 0-1
2022.05.28 Groninger Combinatie Open
1352669 Noordenbos, Daan (2059) FM Elgersma, Onno (2303) 1/2-1/2
1.e4 c6 2.d4 d5 3.e5 Bf5 4.h4 h5 5.Bd3 Bxd3 6.Qxd3 Qa5+ 7.Nd2 e6 8.Ne2 Ne7 9.b4 Qa6 10.Qb3 Nf5 11.Nf3 Nd7 12.Nf4 Nb6 13.a4 Qc4 14.Qxc4 Nxc4 15.c3 a5 16.b5 cxb5 17.axb5 b6 18.Nd2 Rc8 19.Ra4 Nxd2 20.Bxd2 Be7 21.g3 g6 22.Ke2 O-O 23.Kd3 Rfd8 24.Be1 Bf8 25.f3 Bh6 26.Ng2 Ne7 27.g4 Rc7 28.g5 Bf8 29.Ne3 Rdc8 30.Rh2 Nf5 31.Nd1 Be7 32.Rha2 Kf8 33.Ra1 Ke8 34.R1a2 Bf8 35.Ra1 Rc4 36.Nb2 R4c7 37.Nd1 Rd8 38.R1a2 Ne7 39.Ne3 Nc8 40.Bd2 Na7 41.Rb2 Rdc8 42.c4 dxc4+ 43.Nxc4 Rb7 44.Ke4 Rd8 45.Ne3 Rbd7 46.Bc3 Nc8 47.Nc4 Rc7 48.Rb3 Be7 49.Ne3 Rcd7 50.Bb2 Kf8 51.Rd3 Na7 52.Rb3 Kg8 53.Rc4 Bf8 54.Nd1 Bb4 55.Nc3 Bxc3 56.Bxc3 Rd5 57.Bxa5 Nxb5 58.Bxb6 Rb8 59.Bc5 Nd6+ 60.Bxd6 Rxb3 61.Rc8+ Kh7 62.Be7 Rdb5 63.Bd6 Rb7 64.Rc4 Rb1 65.Kf4 Rd1 66.Ra4 Rd3 67.Ra3 Rxd4+ 68.Kg3 Rd1 69.Ra8 Rd3 70.Ra3 Rd1 71.Ra8 Rf1 72.Kg2 Rc1 73.Re8 Rc2+ 74.Kg3 Rcb2 75.Kh3 R2b3 76.Kg3 Rd3 77.Be7 Rdb3 78.Bd6 Ra7 79.Be7 Rab7 1/2-1/2
2022.05.28 Groninger Combinatie Open
1352674 Basinas, Konstantinos (1703) FM Elgersma, Onno (2303) 0-1
1.d4 Nf6 2.c4 e6 3.Nf3 d5 4.g3 Be7 5.Bg2 O-O 6.O-O dxc4 7.Nbd2 b5 8.a4 c6 9.axb5 cxb5 10.Ne5 Nd5 11.e4 Nb4 12.Nb1 Bb7 13.Nc3 a6 14.Be3 Nd7 15.f4 f6 16.Nxd7 Qxd7 17.f5 Rad8 18.Bh3 e5 19.d5 Qc7 20.Kh1 Bc5 21.Bd2 Nd3 22.Qe2 Nxb2 23.Nxb5 axb5 24.Ba5 Bb6 25.Bxb6 Qxb6 26.Qxb2 Bc8 27.Qb4 Bd7 28.Rfc1 Qd4 29.Bg2 Rfe8 30.Rd1 Qb6 31.Rdc1 Rb8 32.h4 Rbc8 33.Rab1 Qc5 34.Qc3 Ra8 35.Ra1 b4 36.Qb2 c3 37.Qb3 Rxa1 38.Rxa1 c2 39.Rc1 Rc8 40.d6+ Kf8 41.Bf1 Qc3 42.Qd5 b3 43.Qb7 b2 44.Qxd7 bxc1=Q 45.Qe7+ Kg8 46.Qe6+ Kh8 47.d7 Qxf1+ 0-1
2022.05.27 Groninger Combinatie Open
1352657 FM Clemens, A (2103) FM Elgersma, Onno (2303) 1/2-1/2
1.d4 Nf6 2.c4 e6 3.Nf3 d5 4.Nc3 c5 5.cxd5 exd5 6.g3 Nc6 7.Bg2 cxd4 8.Nxd4 Bc5 9.Nb3 Bb6 10.O-O d4 11.Na4 O-O 12.Nxb6 axb6 13.Bg5 h6 14.Bxf6 Qxf6 15.Bxc6 bxc6 16.Qxd4 Qd8 17.Qxd8 Rxd8 18.Rfd1 Be6 19.Nd4 Rxa2 20.Nxe6 Rxd1+ 21.Rxd1 fxe6 22.Rd6 Rxb2 23.Rxc6 Kf7 24.Kg2 b5 25.Kf3 b4 26.h4 h5 27.Rb6 b3 28.Ke3 Kf6 29.Rb5 g6 30.Kd3 Rb1 31.Kd2 b2 32.Ke3 Kf7 33.Rb7+ Kf6 34.Rb5 Kf7 35.Rb7+ Kf6 1/2-1/2
2022.05.27 Groninger Combinatie Open
1352664 FM Elgersma, Onno (2303) Hommes, E (2095) 1-0
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O b5 6.Bb3 Be7 7.d3 O-O 8.Nc3 d6 9.a3 Bg4 10.Be3 Nd4 11.Bxd4 exd4 12.Nd5 c6 13.Nxf6+ Bxf6 14.a4 Qd7 15.h3 Be6 16.Bxe6 Qxe6 17.Nd2 Rfe8 18.f4 c5 19.Qf3 Rac8 20.axb5 axb5 21.Ra6 Qd7 22.b3 Rc6 23.Rfa1 Rec8 24.Qg4 Qxg4 25.hxg4 g5 26.g3 Bd8 27.Rxc6 1-0
2022.05.26 Groninger Combinatie Open
1352651 FM Elgersma, Onno (2303) De Vries, Leon (1951) 1-0
1.e4 c5 2.Nf3 Nc6 3.Bb5 g6 4.O-O Bg7 5.Re1 e5 6.Bxc6 dxc6 7.d3 Qc7 8.a4 a5 9.Be3 b6 10.h3 Ne7 11.Qd2 h6 12.Na3 Be6 13.Nc4 Bxc4 14.dxc4 Rd8 15.Qc1 Nc8 16.Bd2 Nd6 17.b3 Rd7 18.Re2 Re7 19.Rb1 f5 20.exf5 Nxf5 21.Bc3 O-O 22.Nd2 Nd6 23.Ne4 Nxe4 24.Rxe4 Rf4 25.Qe3 Rxe4 26.Qxe4 Qd6 27.Re1 Kf7 28.f4 Re6 29.fxe5 Qc7 30.Kh1 Kg8 31.Rf1 Qe7 32.Rf3 Qg5 33.Rd3 h5 34.h4 Qe7 35.Re3 Qf7 36.Kh2 Qe7 37.g3 Qc7 38.Kg2 Qf7 39.g4 Qe8 40.Rg3 hxg4 41.Rxg4 Qf7 42.Rg3 Qe8 43.Qg4 Qf7 44.Qg5 Kh7 45.Rh3 Qf5 46.Qxf5 gxf5 47.Re3 Kg6 48.Kf3 Kh5 49.Re2 Bh6 50.Rg2 Re8 51.Rg1 Rf8 52.Rd1 Kxh4 53.e6 f4 54.e7 Re8 55.Rd8 1-0
2022.05.21 Dutch League 2021-22
1351324 FM Elgersma, Onno (2303) IM Van de Griendt, JW (2360) 1/2-1/2
1.e4 e6 2.d4 d5 3.Nd2 Nf6 4.Bd3 c5 5.e5 Nfd7 6.c3 b6 7.Ngf3 Ba6 8.Bxa6 Nxa6 9.O-O Be7 10.Qe2 Nc7 11.dxc5 bxc5 12.c4 O-O 13.Rd1 Qc8 14.Nf1 Nb6 15.cxd5 exd5 16.Ng3 Re8 17.Qc2 g6 18.h3 Bf8 19.a4 a5 20.b3 Ne6 21.Bb2 Bg7 22.Nf1 Qb7 23.Re1 Rac8 24.Rad1 c4 25.Ne3 h5 26.Ba3 Nf4 27.bxc4 Nxc4 28.Nxc4 Rxc4 29.Qb2 Qxb2 30.Bxb2 Rxa4 31.g3 Ra2 32.gxf4 Rxb2 33.Rd4 Rb4 34.Rxd5 Rxf4 35.Kg2 a4 36.Ra5 Bf8 37.Ra6 a3 38.Re2 h4 39.Nd2 Bc5 40.Nb1 Rf5 41.Nxa3 Rg5+ 42.Kf1 Rgxe5 43.Rxe5 Rxe5 44.Nc4 Re4 45.Nb2 Rd4 46.Ke2 g5 47.Nd3 Be7 48.Ke3 Rc4 49.Ra5 g4 50.hxg4 Rxg4 51.Ra1 Kg7 52.Kf3 Rd4 53.Nf4 Bd6 54.Nh3 f5 55.Ra2 Rd3+ 56.Kg2 f4 57.f3 Rd5 58.Nf2 Rg5+ 59.Ng4 Rd5 60.Nf2 Be7 61.Re2 Bf6 62.Nh3 Be5 63.Ra2 Kg6 64.Nf2 Kf5 65.Ng4 Bc7 66.Rc2 Bb6 67.Rb2 Bd8 68.Rc2 Bb6 69.Rb2 Be3 70.Kh3 Kg5 71.Rb8 Rd1 72.Rb5+ Kg6 73.Ne5+ Kf5 74.Ng4+ Kg6 75.Ne5+ Kf5 76.Ng4+ Kg6 77.Ne5+ 1/2-1/2
2022.05.15 12th WLC Weekender 2022
1342741 FM Elgersma, Onno (2303) Roebers, Eline (2369) 1/2-1/2
1.e4 c5 2.Nf3 Nc6 3.Bb5 g6 4.O-O Bg7 5.Re1 e5 6.Bxc6 dxc6 7.d3 Qe7 8.a3 Nf6 9.Nbd2 O-O 10.h3 Nh5 11.Nc4 f6 12.Be3 Be6 13.Nfd2 b6 14.a4 Rad8 15.Qe2 Nf4 16.Qf1 g5 17.Nb3 g4 18.hxg4 Bxg4 19.a5 Bh6 20.axb6 axb6 21.Bxf4 Bxf4 22.g3 Kh8 23.Ne3 Rg8 24.Nxg4 Rxg4 25.Qh3 Rg7 26.Nc1 c4 27.Ne2 cxd3 28.cxd3 Qc5 29.d4 Qe7 30.Red1 Bg5 31.d5 cxd5 32.Rxd5 Rxd5 33.exd5 Qb7 34.Rd1 e4 35.d6 Qd7 36.Qxd7 Rxd7 37.Nc3 f5 38.Nb5 Kg7 39.Rd5 Kg6 40.Kf1 f4 41.Nc7 fxg3 42.Ne6 Bh6 43.fxg3 Kf6 44.Nd4 Be3 45.Ke2 Bxd4 46.Rxd4 Ke5 47.Ke3 Rxd6 48.Rxe4+ 1/2-1/2
2022.05.15 12th WLC Weekender 2022
1342713 Van Roon, Sjoerd (2264) FM Elgersma, Onno (2303) 0-1
1.e4 c6 2.d4 d5 3.e5 Bf5 4.Nf3 e6 5.Be2 c5 6.Be3 Qb6 7.Nbd2 Nc6 8.dxc5 Bxc5 9.Bxc5 Qxc5 10.c3 Qb6 11.Nb3 Nge7 12.O-O O-O 13.Bd3 Bxd3 14.Qxd3 Ng6 15.Rae1 a5 16.Qe3 Qxe3 17.Rxe3 a4 18.Nbd4 Ra6 19.g3 Rb6 20.Rb1 Rc8 21.Nc2 Kf8 22.a3 Ke7 23.Nb4 Kf8 24.Re2 Nxb4 25.cxb4 Rc4 26.Rd1 Ne7 27.Ng5 Nf5 28.Nxh7+ Ke7 29.Ng5 Nd4 30.Re3 Rbc6 31.Nf3 Nb3 32.Re2 Rc2 33.Rde1 Rxe2 34.Rxe2 Rc1+ 35.Kg2 Rb1 36.Rc2 Kd7 37.Nd2 Re1 38.Nxb3 axb3 39.Rc3 Rxe5 40.Kf1 d4 41.Rd3 Rd5 42.f4 f6 43.Ke2 e5 44.fxe5 fxe5 45.Kf3 Ke6 46.Ke4 Rd8 47.Rf3 g6 48.g4 Rh8 49.h3 b5 50.Rxb3 Rc8 51.Rf3 Rc1 52.g5 Re1+ 53.Kd3 e4+ 54.Kd2 Rh1 55.Rf8 Rh2+ 56.Kc1 Rh1+ 57.Kc2 d3+ 58.Kd2 Kd5 59.Rd8+ Kc4 60.Rc8+ Kb3 61.Re8 Rh2+ 62.Kd1 Kxb2 63.Rxe4 Kc3 64.Re8 Rh1+ 65.Re1 Rxe1+ 0-1
2022.05.14 12th WLC Weekender 2022
1342641 FM Elgersma, Onno (2303) Broekhuis, Jan (1845) 1-0
1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.e5 Nfd7 5.f4 a6 6.Nf3 c5 7.Be3 Nc6 8.Qd2 b5 9.a3 Bb7 10.Be2 Rc8 11.O-O Qc7 12.Rad1 Nxd4 13.Nxd4 cxd4 14.Bxd4 Bc5 15.Kh1 Bxd4 16.Qxd4 Qc5 17.Ne4 O-O 18.Nxc5 1-0
2022.05.14 12th WLC Weekender 2022
1342663 Slagboom, Leandro (1997) FM Elgersma, Onno (2303) 0-1
1.e4 c6 2.d4 d5 3.f3 Nf6 4.e5 Nfd7 5.f4 e6 6.Nf3 c5 7.c3 Nc6 8.Be3 Qb6 9.Qd2 Be7 10.Bd3 O-O 11.O-O f6 12.Qc2 f5 13.a3 c4 14.Be2 Na5 15.Nbd2 Qd8 16.g4 Nb6 17.gxf5 exf5 18.Kh1 Qe8 19.Rae1 Be6 20.Bd1 Bd7 21.Qb1 Rc8 22.Bf2 Ba4 23.Be2 Rc6 24.Rg1 Rg6 25.Bg3 Rh6 26.Nf1 Bd7 27.Ne3 Be6 28.Ng5 Bxg5 29.fxg5 Rh3 30.Bf4 Rxe3 31.Bxe3 f4 32.Bf2 Nb3 33.Bf3 Nd2 34.Qd1 Nxf3 35.Qxf3 Na4 36.Re2 Qg6 37.h4 Qd3 38.Qxd3 cxd3 39.Rd2 Bf5 40.Rc1 b5 41.Be1 Nb6 42.b3 Kf7 43.Rf2 Be4+ 44.Kh2 Ke6 45.Bd2 f3 46.Kg3 a5 47.c4 dxc4 48.Bxa5 Nd5 49.bxc4 bxc4 50.Rxc4 Nf4 51.Bd2 Ne2+ 52.Kg4 h5+ 53.gxh6 gxh6 54.Rb4 Rg8+ 55.Kh3 Kf5 56.Rb6 Rg3+ 57.Kh2 Kg4 58.Rxf3 Rxf3 0-1
2022.05.14 12th WLC Weekender 2022
1342691 FM Elgersma, Onno (2303) FM Becx, C (2101) 1-0
1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.d3 Be7 5.O-O O-O 6.a4 d6 7.h3 h6 8.a5 a6 9.Nc3 Qe8 10.Re1 Be6 11.Nd5 Bd8 12.c3 Nh7 13.d4 Kh8 14.Be3 exd4 15.cxd4 Ne7 16.Qb3 Bc8 17.Bd2 Nxd5 18.Bxd5 c6 19.Bc4 f6 20.Nh4 Qh5 21.Qg3 Ng5 22.f4 Bxh3 23.fxg5 fxg5 24.Nf5 Bxf5 25.exf5 g4 26.Qh2 Qxh2+ 27.Kxh2 d5 28.Bd3 Bf6 29.Bc3 h5 30.g3 Kg8 31.Re6 Kf7 32.Rae1 Rfd8 33.Kg2 Rd7 34.Rh1 Rh8 35.Ree1 Rdd8 36.Bb4 Bxd4 37.Re7+ Kg8 38.Rxb7 c5 39.Bc3 Bxc3 40.bxc3 c4 41.Bc2 Rh6 42.Re1 d4 43.cxd4 Rhd6 44.Ree7 Rxd4 45.Rxg7+ Kh8 46.Rh7+ Kg8 47.f6 1-0
2022.05.07 Dutch Youth U18 2022
1337688 FM Elgersma, Onno (2303) Van Foreest, Machteld (2287) 1-0
1.e4 c5 2.Nf3 e6 3.g3 Nc6 4.Bg2 Nf6 5.Qe2 Be7 6.e5 Nd5 7.O-O d6 8.exd6 Qxd6 9.Rd1 Bf6 10.Nc3 Nxc3 11.dxc3 Qe7 12.Nd2 Bd7 13.Ne4 Be5 14.Bg5 f6 15.Be3 b6 16.f4 Bc7 17.Rxd7 Qxd7 18.Rd1 Qe7 19.Nxc5 Rd8 20.Bxc6+ Kf7 21.Ne4 Rxd1+ 22.Qxd1 Rd8 23.Qe2 Bb8 24.Ba4 Qb7 25.Nf2 g6 26.Bb3 Qd7 27.Bd4 Ke7 28.Ng4 Rf8 29.Ne3 Kf7 30.f5 gxf5 31.Nxf5 Be5 32.Qh5+ Kg8 33.Qg4+ Kf7 34.Qg7+ Ke8 35.Ba4 1-0
2022.05.06 Dutch Youth U18 2022
1337681 Verheul, Job (1707) FM Elgersma, Onno (2303) 1-0
1.e4 c6 2.d4 d5 3.e5 Bf5 4.h4 h5 5.c4 e6 6.Nc3 Ne7 7.Nge2 Qb6 8.Ng3 Bg6 9.Bg5 Nd7 10.Rc1 dxc4 11.Bxc4 Rd8 12.Na4 Qc7 13.O-O Nb6 14.Nc5 Nxc4 15.Rxc4 Rd5 16.Ne2 b5 17.Rc3 Nf5 18.Nf4 Rxd4 19.Qb3 Rxf4 20.Bxf4 Bxc5 21.Rxc5 O-O 22.Qxb5 Qe7 23.Qc4 Qxh4 24.Rxc6 Ne7 25.Bg3 Qxc4 26.Rxc4 Bd3 27.Rc7 Bxf1 28.Kxf1 Nd5 29.Rxa7 Rc8 30.Rb7 Rc2 31.a4 g5 32.a5 h4 33.Bh2 g4 34.a6 g3 35.Bxg3 hxg3 36.a7 Rxf2+ 37.Ke1 Nf4 38.a8=Q+ Kg7 39.Rb3 Nxg2+ 40.Kd1 Rf1+ 41.Kc2 Ne1+ 42.Kd2 g2 43.Rg3+ Kh7 44.Qg8+ Kh6 45.Qh8# 1-0
2022.05.05 Dutch Youth U18 2022
1337674 FM Elgersma, Onno (2303) Maters, Arthur (2048) 1-0
1.e4 d6 2.Nf3 Nf6 3.Nc3 e5 4.d4 Nbd7 5.Bc4 Be7 6.O-O c6 7.a4 Qc7 8.Re1 h6 9.Ba2 O-O 10.h3 Re8 11.Be3 b6 12.Qd3 a6 13.Qc4 Rf8 14.Nh4 exd4 15.Bxd4 Ne5 16.Qe2 Nh7 17.Nf5 Bxf5 18.exf5 Bf6 19.Rad1 Nd7 20.Qc4 Ra7 21.Be3 d5 22.Qg4 Kh8 23.Bf4 Qc8 24.Bd6 Re8 25.Qh5 Nc5 26.Rxe8+ Qxe8 27.a5 Rd7 28.Bxc5 bxc5 29.Na4 c4 30.b3 cxb3 31.Bxb3 Re7 32.Rf1 Re1 33.Nc5 Bd8 34.Nd3 Rxf1+ 35.Kxf1 Bxa5 36.Qe2 Qc8 37.Ne5 Kg8 38.Ba4 Bb4 39.Nxc6 a5 40.Qb5 Kf8 41.Qxd5 Nf6 42.Qd4 Be7 43.Qe5 Qd7 44.Qxa5 Qd1+ 45.Qe1 Qxe1+ 46.Kxe1 Bc5 47.Ne5 Bd4 48.Nd3 Ke7 49.Bb3 Ne4 50.Ke2 Kf6 51.g4 Nc3+ 52.Kf3 g6 53.fxg6 fxg6 54.h4 g5 55.hxg5+ hxg5 56.Bc4 Ke7 57.Kg2 Kf6 58.f4 gxf4 59.Nxf4 Be5 60.Nd5+ Kg5 61.Nxc3 Bxc3 62.Kf3 Kf6 63.Ke4 Bb4 64.Bb3 Bc3 65.Ba4 Kg5 66.Bd7 Kf6 67.Kd3 Be1 68.Kc4 Ke5 69.g5 Bh4 70.g6 Bf6 71.Kb5 Kd6 72.Bh3 Bc3 73.Kc4 Bg7 74.c3 Ke5 75.Bf1 Kd6 76.Kb4 Kc6 77.c4 Bf8+ 78.Ka5 Kc5 79.Ka6 Kc6 80.Bg2+ Kc5 81.Bd5 Bg7 82.Kb7 Kd6 83.Kb6 Bd4+ 84.Kb5 Be5 85.Be4 Bd4 86.c5+ Kc7 87.Kc4 Bb2 88.Kd5 Kd7 89.Bf5+ Kc7 90.c6 Kd8 91.Ke6 Kc7 92.Be4 1-0
2022.05.04 Dutch Youth U18 2022
1337668 Klaren, Duncan (1916) FM Elgersma, Onno (2303) 0-1
1.d4 Nf6 2.Nf3 d5 3.g3 c5 4.Bg2 cxd4 5.O-O h6 6.b3 h5 7.h4 Bg4 8.Bb2 Nc6 9.Nxd4 Qd7 10.Nxc6 bxc6 11.Nd2 Rd8 12.Nf3 Bh3 13.Qd3 Bxg2 14.Kxg2 g6 15.Qa6 Bg7 16.Ne5 Qe6 17.Qxc6+ Qxc6 18.Nxc6 Rc8 19.Nxa7 Rxc2 20.Bd4 Rxe2 21.a4 Kd7 22.a5 e5 23.Bb6 d4 24.Nb5 Nd5 25.Rfc1 Rb8 26.Rc5 Nxb6 27.Rc7+ Ke6 28.Rc6+ Kd5 29.Rac1 Nd7 30.Nc7+ Ke4 31.a6 Ra2 32.Rb1 Bf8 33.Rc4 Bd6 34.b4 Nb6 0-1
2022.05.03 Dutch Youth U18 2022
1337659 FM Elgersma, Onno (2303) Roebers, Eline (2369) 0-1
1.e4 c5 2.Nf3 d6 3.Bb5+ Nd7 4.a4 Nf6 5.Nc3 g6 6.a5 a6 7.Be2 Bg7 8.O-O O-O 9.d3 b5 10.axb6 Nxb6 11.h3 a5 12.Qd2 h6 13.Qe1 e5 14.Bd1 Nh7 15.Na4 Nxa4 16.Rxa4 Bd7 17.Ra3 f5 18.exf5 gxf5 19.Nd2 Ng5 20.h4 Ne6 21.Nc4 f4 22.Bf3 Rb8 23.Bd5 Kh8 24.Rxa5 f3 25.g3 Nd4 26.Kh2 Nxc2 27.Qd1 Nb4 28.Bxf3 d5 29.Rxc5 dxc4 30.dxc4 Bf5 31.Qxd8 Rbxd8 32.Be2 Nd3 33.Rd5 Rxd5 34.cxd5 Rd8 35.Be3 Rxd5 36.g4 Bg6 37.g5 h5 38.Ra1 Rd8 39.Ra6 Kh7 40.Bxd3 Bxd3 41.Rb6 Ra8 42.b4 Ra1 43.Rd6 Bf5 44.b5 Ra4 45.b6 Rxh4+ 46.Kg3 Rb4 47.Rc6 h4+ 48.Kh2 Be4 49.Rd6 Bf8 50.Rf6 Kg7 51.f3 Rb3 52.fxe4 Rxe3 53.Rc6 Rxe4 54.b7 Rb4 55.Rc7+ Kg6 56.Rc8 Bd6 57.Rc6 Rxb7 58.Rxd6+ Kxg5 59.Rd8 Rb2+ 60.Kh3 Rb3+ 61.Kg2 h3+ 62.Kf2 Kf4 63.Rf8+ Ke4 64.Rh8 Rf3+ 65.Ke2 Ra3 66.Rh4+ Kf5 67.Rh8 Kf4 68.Rf8+ Ke4 69.Kf2 h2 70.Rh8 Ra1 71.Rh4+ Kd3 72.Rh3+ Kd4 73.Rh4+ e4 0-1
2022.05.02 Dutch Youth U18 2022
1337652 Albers, Sasa (2117) FM Elgersma, Onno (2303) 1/2-1/2
1.e4 c6 2.Nf3 d5 3.Nc3 dxe4 4.Nxe4 Nf6 5.Qe2 Na6 6.Nxf6+ gxf6 7.g3 Qd5 8.Bg2 Nb4 9.d3 Bg4 10.Kd1 e5 11.h3 Bh5 12.g4 Bg6 13.Nh4 Qe6 14.f4 exf4 15.Re1 Qxe2+ 16.Rxe2+ Kd7 17.Bxf4 Nd5 18.Bxd5 cxd5 19.Kd2 h5 20.g5 Bg7 21.Rg1 Rhg8 22.Reg2 f5 23.c3 Rge8 24.Re1 Rxe1 25.Kxe1 Re8+ 26.Re2 Re6 27.Rxe6 Kxe6 28.Ke2 a6 29.Be3 Be5 30.Ng2 b5 31.Nf4+ Bxf4 32.Bxf4 h4 33.Ke3 Bh5 34.Bh2 Bg6 35.Bf4 Bh5 36.Bc7 Bg6 37.Bd8 f4+ 38.Kxf4 Bf5 39.g6 fxg6 40.Bxh4 Bxd3 41.Bf2 1/2-1/2
2022.05.01 Dutch Youth U18 2022
1337645 FM Elgersma, Onno (2303) Van Kuijk, Vadim (1898) 1-0
1.e4 c6 2.c4 d5 3.exd5 cxd5 4.cxd5 Nf6 5.Nc3 g6 6.Bb5+ Nbd7 7.Qb3 Bg7 8.a4 O-O 9.d3 Nb6 10.Bc4 Re8 11.Nge2 e6 12.d6 Qxd6 13.Bf4 Qe7 14.O-O Bd7 15.a5 Nxc4 16.dxc4 e5 17.Bg5 Bc6 18.Rfd1 Qe6 19.Nd5 Rac8 20.Bxf6 Bxf6 21.Qe3 Bg7 22.Qxa7 Qg4 23.Qe3 Bxd5 24.cxd5 Rc2 25.Nd4 Rxb2 26.a6 bxa6 27.Nc6 Re2 28.Qf3 Qxf3 29.gxf3 e4 30.Rab1 exf3 31.d6 Bf6 32.d7 R8e4 33.h3 Rh4 34.Rd6 Bg5 35.Nd4 Rd2 36.d8=Q+ Bxd8 37.Rxd8+ Kg7 38.Nf5+ 1-0
2022.04.26 Titled Tue 26th Apr Early
1333506 FM Elgersma, Onno (2286) IM Molina, Rob (2400) 0-1
1.e4 c6 2.d4 d5 3.exd5 cxd5 4.c4 Nf6 5.Nc3 e6 6.Nf3 Be7 7.cxd5 Nxd5 8.Bd3 O-O 9.O-O Nc6 10.Re1 Nf6 11.Bg5 b6 12.a3 Bb7 13.Rc1 Rc8 14.Bb1 Nd5 15.Qd3 g6 16.Bh6 Re8 17.Ne4 Nf6 18.h3 Nxe4 19.Qxe4 Bf6 20.Qf4 Bg7 21.Ba2 Nxd4 22.Ne5 Qf6 23.Qxd4 Bxh6 24.Rxc8 Bxc8 25.Qa4 Qe7 26.Nc6 Qc7 27.Nxa7 Bd7 28.Nb5 Qc5 29.Bc4 Rc8 30.b3 Bf8 31.Rf1 Bc6 32.Qa6 Ra8 33.Na7 Be4 34.b4 Qd4 35.Be2 b5 36.Nxb5 Rxa6 37.Nxd4 Rxa3 38.b5 Bc5 39.Nc6 Rb3 40.Bf3 Bxf3 41.gxf3 Rxb5 42.Ne5 Bd6 43.Ng4 h5 44.Ne3 Bf4 45.Ng2 Bg5 46.Re1 Bf6 47.f4 Kg7 48.Kh2 Rb4 49.Kg3 Be7 50.f3 Bd6 51.h4 Be7 52.Rd1 Bf6 53.Re1 Rb7 54.Re2 Re7 55.Re1 Rd7 56.Re2 Rd5 57.Rf2 Rd3 58.Re2 Bd4 59.Re1 Rd2 60.Re4 Bf2+ 61.Kh3 Bc5 62.Kg3 Rc2 63.Re1 Bf2+ 0-1
2022.04.26 Titled Tue 26th Apr Early
1332747 FM Vakhlamov, I (2413) FM Elgersma, Onno (2286) 1/2-1/2
1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.exd5 exd5 5.Bd3 Nf6 6.Nf3 Bg4 7.O-O O-O 8.h3 Bh5 9.Bf4 Bd6 10.Bg5 c6 11.Re1 Nbd7 12.g4 Bg6 13.Ne5 Be7 14.f4 Nxe5 15.fxe5 Nd7 16.Bxe7 Qxe7 17.Bxg6 fxg6 18.Qd2 Rf3 19.Kg2 Raf8 20.Rf1 Rxf1 21.Rxf1 Rxf1 22.Kxf1 Nf8 23.Ne2 Ne6 24.Qe3 Qh4 25.c3 h5 26.Qg3 Qxg3 27.Nxg3 hxg4 28.hxg4 Kh7 29.Kf2 Kh6 30.Ne2 g5 31.Ke3 Kg6 32.b3 Kf7 33.c4 g6 34.Nc3 Nc7 35.cxd5 cxd5 36.Kd3 Ke6 37.a4 b6 38.Ne2 Na6 39.Kc3 Nb8 40.Ng1 Nc6 41.Nf3 Ke7 42.Kd2 Nd8 43.Nxg5 Ne6 44.Nxe6 Kxe6 45.Kc3 a5 46.g5 Kf5 47.b4 Ke6 48.Kb3 Kf5 49.Kc3 Ke6 50.bxa5 bxa5 51.Kd3 Kf5 52.Ke3 Ke6 53.Kf3 Ke7 54.Kg4 Ke6 55.Kf4 Ke7 56.Kg4 Ke6 57.Kf4 Ke7 58.Kg4 1/2-1/2
2022.04.26 Titled Tue 26th Apr Early
1332536 CM Mika, T2 (2202) FM Elgersma, Onno (2286) 0-1
1.d4 Nf6 2.Nf3 d5 3.g3 c6 4.Bg2 Bf5 5.c4 e6 6.Nc3 h6 7.Qb3 Qb6 8.c5 Qc7 9.Bf4 Qc8 10.h3 Nbd7 11.g4 Bg6 12.O-O-O b6 13.cxb6 axb6 14.Rhe1 Ne4 15.Nh4 Nxc3 16.Qxc3 Bh7 17.e4 g5 18.exd5 cxd5 19.Bxd5 Qxc3+ 20.bxc3 Rc8 21.Nf5 gxf4 22.Bxe6 fxe6 23.Rxe6+ Kf7 24.Rde1 Ba3+ 25.Kd2 Bxf5 26.gxf5 Rhe8 27.Rxe8 Rxe8 28.Rxe8 Kxe8 0-1
2022.04.26 Titled Tue 26th Apr Early
1333569 FM Odegov, Artem (2286) FM Elgersma, Onno (2286) 0-1
1.d4 Nf6 2.c4 e6 3.Nf3 d5 4.Nc3 c5 5.cxd5 exd5 6.g3 Nc6 7.Bg5 cxd4 8.Nxd4 Bc5 9.Nb3 Bxf2+ 10.Kxf2 Ng4+ 11.Kg1 Qxg5 12.Nxd5 O-O 13.Bg2 Be6 14.Qc1 Qd8 15.e4 Bxd5 16.exd5 Nb4 17.Qc5 Qg5 18.h3 Rac8 19.Qxa7 Ne3 20.Re1 Nbc2 21.Re2 Qxg3 22.h4 Nxg2 23.Rxg2 Qe1+ 24.Kh2 Qxh4+ 25.Kg1 Qe1+ 26.Kh2 Qe5+ 27.Rg3 Ne1 28.Qf2 Rc2 29.Nd2 Rxd2 30.Qxd2 Nf3+ 31.Kh3 Nxd2 32.Rhg1 g6 33.Rd3 0-1
2022.04.26 Titled Tue 26th Apr Early
1333849 IM Vlassov, N (2294) FM Elgersma, Onno (2286) 1-0
1.e4 e6 2.d4 d5 3.exd5 exd5 4.Nf3 Nc6 5.Bd3 Bg4 6.O-O Bd6 7.c3 Nge7 8.Re1 Qd7 9.b4 f6 10.h3 Bh5 11.Ne5 Bxd1 12.Nxd7 Bh5 13.Nc5 Bxc5 14.dxc5 Bg6 15.Bf1 Kf7 16.Bf4 Rac8 17.Nd2 Rhe8 18.Nf3 Be4 19.b5 Na5 20.Nd4 Nf5 21.f3 Nxd4 22.cxd4 Bf5 23.Rxe8 Kxe8 24.g4 Bg6 25.Rc1 Bf7 26.Kf2 Nc4 27.h4 Be6 28.Bd3 h6 29.g5 hxg5 30.hxg5 Kf7 31.gxf6 Kxf6 32.c6 bxc6 33.bxc6 g5 34.Bg3 Rb8 35.Bxc7 Rc8 36.Bxc4 dxc4 37.Be5+ Kf5 38.c7 g4 39.fxg4+ Ke4 40.g5 Bd5 41.g6 Kd3 42.Rb1 c3 43.g7 c2 44.Rc1 Kd2 45.Bf4+ Kd3 46.a3 Rg8 47.Rg1 Kc3 48.Bc1 Kxd4 49.Rg5 Bc4 50.Kg3 Kd3 51.Rc5 Be6 52.Kf4 Bc8 53.Bb2 Kd2 54.Kg5 Rxg7+ 55.Bxg7 c1=Q 56.Rxc1 Kxc1 57.Kf6 Kc2 58.Ke7 Kb3 59.Kd8 Ba6 60.Bf8 Ka4 61.c8=Q Bxc8 62.Kxc8 Kb5 63.Kb7 a5 64.Be7 a4 65.Bf8 Kc4 66.Kc6 Kd4 67.Bd6 Kc4 68.Bc5 Kd3 69.Kd5 Kc3 70.Bb4+ Kd3 71.Bc5 Kc3 72.Bf8 Kd3 73.Be7 Kc3 74.Kc5 Kd3 75.Kb4 Ke4 76.Kxa4 Kd5 77.Kb5 Ke6 78.Kc6 Kxe7 79.Kc7 Ke6 80.a4 Kd5 81.a5 Kc5 82.a6 Kb5 83.a7 1-0
2022.04.26 Titled Tue 26th Apr Early
1333101 GM Wagner, De (2584) FM Elgersma, Onno (2286) 1/2-1/2
1.d4 Nf6 2.c4 e6 3.Nc3 d5 4.Bg5 Nbd7 5.cxd5 exd5 6.e3 Be7 7.Bd3 c6 8.h3 h6 9.Bf4 Nf8 10.Nf3 Bd6 11.Be5 Ne6 12.Qc2 Ng5 13.O-O-O a5 14.Kb1 Qe7 15.Bxd6 Qxd6 16.Ne5 O-O 17.f4 Nge4 18.Nxe4 Nxe4 19.Bxe4 dxe4 20.Qxe4 f5 21.Qc2 Be6 22.Qc5 Qd5 23.g4 Qxa2+ 24.Kc1 Bb3 25.Qa3 Qxa3 26.bxa3 Bxd1 27.Kxd1 fxg4 28.hxg4 Rac8 29.Ke2 Rfd8 30.Rb1 c5 31.dxc5 Rxc5 32.Rxb7 Rc2+ 33.Kf3 Rc3 34.a4 Ra3 35.Nc6 Re8 36.Ne7+ Kf7 37.Nf5+ Kf6 38.Rb6+ Re6 39.Rb8 Kg6 40.Rb7 Kf6 41.Rb8 h5 42.Rf8+ Kg6 43.Nh4+ Kh7 44.gxh5 Rexe3+ 45.Kg4 Rg3+ 46.Kf5 Rh3 47.Ng6 Rxh5+ 48.Kg4 Kxg6 49.f5+ Kh7 50.Kxh5 Rxa4 51.Kg5 Rb4 52.Ra8 a4 53.Ra7 Kg8 54.Kg6 Rb6+ 55.Kg5 Rb4 56.Kg6 Rg4+ 57.Kh5 Rf4 58.Kg5 Rb4 1/2-1/2
2022.04.26 Titled Tue 26th Apr Early
1333393 IM Salimova, Nurgyul (2403) FM Elgersma, Onno (2286) 1-0
1.d4 Nf6 2.Nc3 d5 3.Bf4 e6 4.Nb5 Na6 5.e3 Be7 6.Nf3 O-O 7.Ne5 c5 8.Be2 Bd7 9.a4 Ne8 10.O-O Bc6 11.c3 f6 12.Nxc6 bxc6 13.Na3 Nb8 14.Nc2 Nd7 15.Bg4 f5 16.Bh5 g5 17.Be5 Nxe5 18.dxe5 Ng7 19.Be2 Rb8 20.Rb1 g4 21.b4 Qc7 22.bxc5 Qxe5 23.Rxb8 Rxb8 24.Nd4 Qc7 25.e4 dxe4 26.Bc4 Bxc5 27.Nxe6 Nxe6 28.Bxe6+ Kh8 29.Bxf5 g3 30.hxg3 Qxg3 31.Bxe4 Rf8 32.Bf3 Qf4 33.Re1 Bd6 34.Re4 Qf6 35.Qd4 Qxd4 36.Rxd4 Be5 37.Rc4 Rc8 38.Bxc6 Kg7 39.g3 Bf6 40.Kg2 h5 41.a5 Rc7 42.a6 Kh6 43.Kf3 Bg7 44.Rc5 Bf6 45.Ke4 h4 46.gxh4 Bxh4 47.f3 Bf6 48.Kd5 Kg7 49.Rc4 Rc8 50.Bb7 Rd8+ 51.Ke4 Re8+ 52.Kf5 Re5+ 53.Kf4 Re7 54.Be4 Be5+ 55.Kg4 Bf6 56.Rc6 Be5 57.c4 Bf6 58.c5 Bd4 59.Rg6+ Kf7 60.Rc6 Re5 61.Rc7+ Kf6 62.c6 Rg5+ 63.Kh3 Ke5 64.Re7+ Kf4 65.Rf7+ Ke3 66.c7 Be5 67.c8=Q Kf2 68.Qc2+ Ke3 69.Qd3+ Kf2 70.Qd2+ Kf1 71.Qxg5 1-0
2022.04.26 Titled Tue 26th Apr Early
1333655 FM Elgersma, Onno (2286) WFM Allahverdiyeva, Ayan (2120) 1-0
1.e4 c5 2.Nf3 d6 3.Bb5+ Bd7 4.a4 g6 5.O-O Bg7 6.Nc3 Nf6 7.Re1 O-O 8.e5 dxe5 9.Nxe5 Bf5 10.d3 Nbd7 11.Bf4 Nxe5 12.Bxe5 Bg4 13.Qd2 Rc8 14.Qf4 Be6 15.Qf3 a6 16.Bc4 Bxc4 17.dxc4 Qb6 18.b3 Rfd8 19.Rad1 Qe6 20.Nd5 Nxd5 21.Bxg7 Nf4 22.Rxd8+ Rxd8 23.Rxe6 Nxe6 24.Bc3 b6 25.h3 a5 26.Qe3 1-0
2022.04.26 Titled Tue 26th Apr Early
1332436 FM Elgersma, Onno (2286) GM Svane, Rasmus (2648) 0-1
1.e4 c6 2.d4 d5 3.exd5 cxd5 4.c4 Nf6 5.Nc3 Nc6 6.h3 g6 7.Nf3 Bg7 8.cxd5 Nxd5 9.Bc4 Nb6 10.Bb3 Nxd4 11.Be3 e5 12.O-O O-O 13.Ne4 Nxb3 14.axb3 Be6 15.Bc5 Qxd1 16.Rfxd1 Rfc8 17.b4 Nd5 18.Nd6 Rc7 19.Nb5 Rd7 20.Rxa7 Rxa7 21.Bxa7 Nxb4 22.Rc1 Nc6 23.Bc5 h6 24.Nc3 f5 25.Ra1 e4 26.Ne1 Ne5 27.Nc2 Nd3 28.Be3 Nxb2 29.Ra8+ Kf7 30.Nb5 Nc4 31.Bc5 Be5 32.Kf1 Rd1+ 33.Ke2 Rd2+ 34.Ke1 Rxc2 0-1
2022.04.26 Titled Tue 26th Apr Early
1332961 FM Elgersma, Onno (2286) GM Kosteniuk, A (2516) 1/2-1/2
1.e4 c6 2.d4 d5 3.exd5 cxd5 4.c4 Nf6 5.Nc3 Nc6 6.Nf3 a6 7.cxd5 Nxd5 8.Bd3 Bg4 9.Qb3 Bxf3 10.gxf3 Ndb4 11.Bc4 e6 12.d5 Nd4 13.Qd1 Nbc2+ 14.Kf1 Qh4 15.Rg1 Qh3+ 16.Rg2 Qxf3 17.Qxf3 Nxf3 18.Rb1 O-O-O 19.dxe6 fxe6 20.Bxe6+ Kb8 21.Ne4 Rd4 22.Bf5 g6 23.Bf4+ Ka7 24.Rc1 gxf5 25.Rxc2 Rxe4 26.Be3+ Nd4 27.Rc4 Rxe3 28.fxe3 Nc6 29.Rd2 Bh6 30.Rd7 Kb6 31.Rc3 f4 32.exf4 Bxf4 33.Rb3+ Kc5 34.Rbxb7 h5 35.Rh7 Rf8 36.Rxh5+ Be5+ 37.Kg2 Rg8+ 38.Kf3 Kd5 39.Rd7+ Ke6 40.Rd3 Nd4+ 41.Kf2 Rf8+ 42.Ke3 Nf5+ 43.Ke4 Nd6+ 44.Ke3 Bf4+ 45.Ke2 Rg8 46.Ra3 Be5 47.Rxa6 Rg2+ 48.Kf3 Rxb2 49.Ra5 Nc4 50.Ra6+ Kd5 51.a4 Rb3+ 52.Ke2 Re3+ 53.Kf2 Ra3 54.Ra8 Nd6 55.a5 Ne4+ 56.Ke2 Ra2+ 57.Kf3 Ra3+ 58.Ke2 Ra2+ 59.Kf3 Ra3+ 60.Ke2 1/2-1/2
2022.04.26 Titled Tue 26th Apr Early
1333230 FM Elgersma, Onno (2286) GM Narayanan, Sri (2559) 1-0
1.e4 c6 2.d4 d5 3.exd5 cxd5 4.c4 Nf6 5.Nc3 Nc6 6.Nf3 e6 7.Bg5 Be7 8.Bd3 O-O 9.O-O h6 10.Bh4 dxc4 11.Bxc4 b6 12.a3 Bb7 13.Re1 Rc8 14.Ba2 Na5 15.Ne5 Nd5 16.Bxe7 Nxe7 17.Qg4 Nf5 18.Rad1 Qh4 19.Qxh4 Nxh4 20.f3 Rfd8 21.d5 f6 22.dxe6 Rxd1 23.Rxd1 Kh7 24.Nf7 Re8 25.Rd7 Bc8 26.Rd8 Rxd8 27.Nxd8 Nf5 28.Bb1 g6 29.Nd5 Nc4 30.Bxf5 gxf5 31.e7 Nd6 32.Nxf6+ Kg6 33.e8=Q+ Nxe8 34.Nxe8 f4 35.Nd6 Bd7 36.N8f7 Kf6 37.Nxh6 Ke5 38.Nc4+ Kd4 39.Nd6 Kd3 40.Ng4 Kc2 41.h4 Kxb2 42.h5 Ba4 43.h6 Bc2 44.Ne4 Kxa3 45.h7 a5 46.h8=Q Bb3 47.Qa1+ Kb4 48.Ne5 a4 49.Nd3+ Kc4 50.Qc3+ Kb5 51.Qb4+ Kc6 52.Ne5+ Kd5 53.Nd3 Kc6 54.Nxf4 b5 55.Qc5+ Kd7 56.Nf6+ Kd8 57.Qd6+ Kc8 58.N4d5 Kb7 59.Qc7+ Ka6 60.Qb6# 1-0
2022.04.23 Dutch League 2021-22
1330909 IM De Jong, JW (2433) FM Elgersma, Onno (2286) 1/2-1/2
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.cxd5 exd5 5.Bg5 c6 6.e3 Bd6 7.Bd3 O-O 8.Nf3 Be6 9.Ne5 c5 10.O-O Nc6 11.Nxc6 bxc6 12.dxc5 Bxc5 13.Qa4 Be7 14.Qxc6 Rb8 15.Qa6 Ng4 16.Bxe7 Qxe7 17.Nb5 Qh4 18.Qd6 a6 19.Nd4 Rxb2 20.Nf3 Qh6 21.Rab1 1/2-1/2
2022.03.27 TCh-BEL 2021-22
1403483 GM Feygin, M (2455) FM Elgersma, Onno (2313) 1/2-1/2
1.e4 c6 2.Nf3 d5 3.Nc3 dxe4 4.Nxe4 Nf6 5.Nxf6+ exf6 6.d4 Bd6 7.Bd3 O-O 8.O-O Bg4 9.Re1 a5 10.c3 Na6 11.h3 Bh5 12.Be2 Nc7 13.Nd2 Bg6 14.Nc4 Nd5 15.Nxd6 Qxd6 16.Bf3 a4 17.Bd2 b5 18.Rc1 Nb6 19.Qe2 Bf5 20.b3 axb3 21.axb3 Ra2 22.Bf4 Qa3 23.Bd6 Qxc1 24.Rxc1 Rxe2 25.Bxf8 Re6 26.Bc5 Nd5 27.c4 bxc4 28.bxc4 Nf4 29.Ra1 h6 30.Ra6 Bd3 31.Ra8+ Kh7 32.d5 cxd5 33.cxd5 Re5 34.Rd8 Bc4 35.Bd4 Ne2+ 36.Bxe2 Rxe2 37.d6 Rd2 38.Be3 Rd1+ 39.Kh2 Be6 40.Bc5 Rd5 41.Bb4 Rb5 42.Ba3 Ra5 43.Bb4 Rb5 44.Ba3 Ra5 45.Bb4 Rb5 1/2-1/2
2022.03.20 TCh-BEL 2021-22
1403445 FM Elgersma, Onno (2313) GM Haub, TM (2428) 1/2-1/2
1.e4 g6 2.d4 Bg7 3.Nf3 d6 4.Bc4 a6 5.O-O e6 6.Re1 b5 7.Bb3 Nd7 8.a4 Rb8 9.axb5 axb5 10.Nbd2 c5 11.c3 Ne7 12.Nf1 O-O 13.Bf4 e5 14.Bg5 h6 15.Be3 Bb7 16.Ng3 Qc7 17.Qd2 c4 18.Bc2 Kh7 19.h4 Nf6 20.Nh2 Bc8 21.f4 b4 22.h5 Ng4 23.Nxg4 Bxg4 24.fxe5 bxc3 25.bxc3 dxe5 26.d5 Nc8 27.Ra6 Bd7 28.Rf1 Nd6 29.Qf2 Bb5 30.Ra7 Rb7 31.Rxb7 Nxb7 32.Ra1 Rb8 33.Nf1 Be8 34.Nh2 Qc8 35.Ra7 Ra8 36.Nf3 Rxa7 37.Bxa7 Nd6 38.hxg6+ fxg6 39.Bc5 Qa6 40.Bb4 Nf7 41.Kh2 h5 42.Bd1 Qf6 43.Qh4 Qxh4+ 44.Nxh4 Ng5 45.Bc2 Bf6 46.Nf3 Nxf3+ 47.gxf3 g5 48.Bd1 Kg6 49.Be2 Bb5 50.Bd6 Kf7 51.Bf1 Ke8 52.Kg1 Kd7 53.Bc5 Ke8 54.Kf2 Be7 55.Be3 Bf6 56.Ba7 Kd8 57.Bb6+ Kc8 58.Be2 Kb7 59.Bc5 Kc7 60.Bb4 Kd8 61.Bc5 1/2-1/2
2022.03.12 Dutch League 2021-22
1408201 FM De Waele, Warre (2190) FM Elgersma, Onno (2310) 1/2-1/2
1.c4 e6 2.g3 d5 3.Bg2 Nf6 4.Nf3 Be7 5.O-O O-O 6.b3 c5 7.e3 Nc6 8.Bb2 b6 9.Nc3 Bb7 10.cxd5 exd5 11.d4 Re8 12.Ne5 Bf8 13.Nxc6 Bxc6 14.Rc1 Rc8 15.Ne2 Ne4 16.Nf4 Bb5 17.Re1 c4 18.bxc4 Bxc4 19.f3 Nf6 20.a3 b5 21.Qd2 Nd7 22.Bh3 Rc6 23.Nd3 Nb6 24.Ne5 Rh6 25.Bf5 Na4 26.e4 dxe4 27.Nxc4 bxc4 28.Bxe4 Rb6 29.Ba1 c3 30.Bxc3 Bxa3 31.Ba5 Bxc1 32.Rxc1 Qd6 33.Bxb6 Nxb6 34.Rc6 Qa3 35.Rc3 Qe7 36.Qf4 Qb4 37.Qd2 Nc4 38.Qd3 Nb2 39.Qd2 Na4 40.Rc8 Qe7 41.Qb4 Qe6 42.Rc6 Qa2 43.Ra6 Rc8 44.Bc6 Qa1+ 45.Kg2 Qa2+ 46.Kf1 Qa1+ 47.Qe1 Qxe1+ 48.Kxe1 Nb6 49.d5 Rc7 50.Kd2 Kf8 51.Kd3 Ke7 52.Kd4 Kd6 53.h4 g6 54.g4 f6 55.Ra1 Re7 56.Ra2 h6 57.Rc2 a5 58.Rb2 Nc8 59.Rb8 Na7 60.Ba4 Kc7 61.Rf8 f5 62.gxf5 gxf5 63.Rxf5 Nc8 64.Rf6 Nd6 65.Kc5 Nb7+ 66.Kd4 Nd6 67.Bc2 Rf7 68.Rxh6 Rxf3 69.h5 Rf2 70.Bd3 a4 71.Rh7+ Rf7 72.Rh8 Rf4+ 73.Ke3 Rh4 74.h6 Rh3+ 75.Kd2 Rh2+ 76.Kc3 a3 77.h7 a2 78.Ra8 Nf7 79.Bc2 Ng5 80.Rxa2 Nxh7 81.Ra7+ Kd6 82.Bxh7 Kxd5 83.Ra5+ Kd6 84.Kd4 Rd2+ 85.Bd3 Rh2 86.Ra6+ Kc7 87.Be4 Rh4 88.Rc6+ Kd7 89.Rg6 Kc7 90.Re6 Kd7 91.Re5 Kd6 92.Ra5 Kc7 93.Ra6 Kd7 94.Ke5 Kc7 95.Rc6+ Kd7 96.Rc1 Rh2 97.Bf5+ Ke7 98.Rc7+ Kd8 99.Rb7 Re2+ 100.Kf6 Rh2 101.Rd7+ Ke8 102.Rd6 Rf2 103.Rc6 Rd2 104.Rc7 Rd1 105.Rc8+ Rd8 106.Rc2 Rd1 107.Bh3 Rd3 108.Bf5 Rd1 109.Ke5 Ke7 110.Rc7+ Ke8 111.Be4 Kf8 112.Bd5 Re1+ 113.Kd6 Rf1 114.Rh7 Ke8 115.Rg7 Rf2 116.Rh7 Rf1 117.Bb3 Rf3 118.Bc4 Rf4 119.Bd5 Rf1 120.Re7+ Kf8 121.Rh7 Re1 122.Rf7+ Ke8 123.Rg7 Rf1 124.Rg8+ Rf8 125.Rxf8+ 1/2-1/2
2022.02.22 Titled Tue 22nd Feb Early
1422925 FM Elgersma, Onno (2282) WFM Shevtchenko, O (2054) 0-1
1.e4 c5 2.Nf3 Nc6 3.Bb5 e5 4.d3 Bd6 5.O-O a6 6.Bc4 b5 7.Bd5 Nge7 8.Bxc6 Nxc6 9.a4 Bb7 10.Nc3 b4 11.Nd5 Ne7 12.Ne3 O-O 13.Nc4 Qc7 14.a5 Ng6 15.Nxd6 Qxd6 16.Nd2 f5 17.Nc4 Qf6 18.f3 d5 19.exd5 Bxd5 20.Nb6 Rad8 21.Qe2 Bb7 22.Be3 Qc6 23.b3 Rfe8 24.Qf2 Nf4 25.Bxf4 exf4 26.Rae1 Qd6 27.Nc4 Qd4 28.Rxe8+ Rxe8 29.Qxd4 cxd4 30.Kf2 Bd5 31.Re1 Rxe1 32.Kxe1 Kf7 33.Nb6 Bc6 34.Nc4 Ke6 35.Ke2 Bd5 36.g3 fxg3 37.hxg3 g5 38.Kf2 h6 39.f4 Bxc4 40.dxc4 Kd6 41.Ke2 Kc5 42.Kd3 g4 43.Kd2 Kd6 44.Ke2 Kc6 45.Kd2 h5 46.Kd3 Kc5 47.Ke2 Kd6 48.Kd1 Kc5 49.Kd2 Kc6 50.Ke2 Kd6 51.Kf2 Kc6 52.Kg2 Kd6 53.Kf1 Kc5 54.Ke2 Kc6 55.Kd1 Kd6 56.Kc1 h4 0-1
2022.02.22 Titled Tue 22nd Feb Early
1422198 CM Topalov, A (2239) FM Elgersma, Onno (2282) 1-0
1.b3 e6 2.Bb2 Nf6 3.Nf3 b6 4.g3 Bb7 5.Bg2 Be7 6.O-O O-O 7.d3 c5 8.e4 d5 9.exd5 Nxd5 10.Nbd2 Bf6 11.Qc1 Nc3 12.Re1 Nd7 13.Ne4 Nxe4 14.dxe4 Bxb2 15.Qxb2 Qf6 16.e5 Qh6 17.Rad1 Rad8 18.c3 Qh5 19.Qe2 Nxe5 20.Rxd8 Nxf3+ 21.Bxf3 Bxf3 22.Rxf8+ Kxf8 23.Qd3 g6 24.h4 Qg4 25.Qd8+ Kg7 26.Kh2 Qf5 27.Qg5 Qc2 28.Qe3 Bg4 29.b4 cxb4 30.cxb4 f6 31.Rc1 Qxa2 32.Rc7+ Kg8 33.Qd4 1-0
2022.02.22 Titled Tue 22nd Feb Early
1422754 FM Viskelis, D (2200) FM Elgersma, Onno (2282) 0-1
1.e4 c6 2.d4 d5 3.exd5 cxd5 4.c4 Nf6 5.Nc3 g6 6.cxd5 Bg7 7.Bb5+ Nbd7 8.d6 e6 9.Bf4 O-O 10.Nf3 a6 11.Bd3 Qb6 12.Qd2 Nh5 13.Bh6 Qxd6 14.Bxg7 Kxg7 15.O-O Qf4 16.Qe2 Ndf6 17.Rad1 b5 18.Ne5 Bb7 19.g3 Qg5 20.h4 Qh6 21.Ne4 Nxe4 22.Bxe4 Bxe4 23.Qxe4 Nf6 24.Qf3 Qh5 25.Qf4 Rfd8 26.Kg2 Qf5 27.Qg5 h6 28.Qd2 Rac8 29.Rc1 Rxc1 30.Rxc1 Qxe5 31.dxe5 Rxd2 32.exf6+ Kxf6 33.Rc6 a5 34.Ra6 a4 35.b3 Rxa2 36.bxa4 bxa4 37.Kf3 Ra1 38.g4 a3 39.Ra7 g5 40.hxg5+ hxg5 41.Ra8 Kg6 42.Rg8+ Kh6 43.Ra8 a2 44.Ra7 f5 45.gxf5 exf5 46.Ra6+ Kg7 47.Kg2 Kf7 48.Ra5 Kf6 49.Ra6+ Kg7 50.Ra5 Kg6 51.Ra6+ Kh5 52.Ra5 Kg4 53.Ra4+ f4 54.Ra5 Kh4 55.Ra8 Kg4 56.Ra5 f3+ 57.Kh2 Kh4 58.Ra8 g4 59.Rh8+ Kg5 60.Ra8 Kf5 61.Ra4 g3+ 62.fxg3 f2 63.Rf4+ Kg5 64.Rxf2 Kg4 65.Rf4+ Kg5 66.Ra4 Kf5 67.Ra8 Ke6 68.Ra5 Kd6 69.g4 Ke6 70.Ra8 Kf6 0-1
2022.02.22 Titled Tue 22nd Feb Early
1422515 FM Elgersma, Onno (2282) FM Rangel, D (2207) 0-1
1.e4 c5 2.Nf3 g6 3.c3 Bg7 4.d4 cxd4 5.cxd4 d5 6.e5 Bg4 7.Nbd2 Nc6 8.Bb5 e6 9.O-O Ne7 10.h3 Bxf3 11.Nxf3 O-O 12.b3 Qb6 13.Bxc6 Nxc6 14.Ba3 Rfc8 15.Bc5 Qd8 16.Qd2 Bf8 17.b4 Bg7 18.Rac1 b6 19.Bd6 Ne7 20.b5 Nf5 21.Bb4 Bh6 22.Qb2 Bxc1 23.Rxc1 Rxc1+ 24.Qxc1 Rc8 25.Qf4 h5 26.g4 hxg4 27.hxg4 Nh4 28.Ne1 Rc4 29.Bd2 Qe7 30.Qg5 Qxg5 31.Bxg5 Rxd4 32.Bxh4 Rxg4+ 33.Bg3 Ra4 34.Kg2 Rxa2 35.Nd3 Ra5 36.Kf3 Rxb5 37.Ke3 a5 38.Kd4 a4 39.Nc1 a3 40.Kc3 Rc5+ 41.Kd2 b5 42.Bf4 b4 43.Be3 Rc4 44.Kd1 Kg7 45.f4 f6 46.exf6+ Kxf6 47.Kd2 Kf5 48.Kd3 Rxf4 49.Bxf4 Kxf4 50.Kc2 g5 51.Nd3+ Ke3 52.Nxb4 g4 53.Kd1 g3 54.Nc2+ Kf2 0-1
2022.02.05 Dutch League 2021-22
1436655 FM Hamblok, R (2232) FM Elgersma, Onno (2310) 0-1
1.e4 c6 2.d4 d5 3.exd5 cxd5 4.Bd3 Nc6 5.c3 Qc7 6.Ne2 Bg4 7.O-O e6 8.Qe1 Nf6 9.f3 Bh5 10.Qh4 Rg8 11.Bxh7 Rh8 12.Bc2 Bd6 13.Bf4 Nxd4 14.cxd4 Qxc2 15.Bxd6 Qxe2 16.Nc3 Qe3+ 17.Kh1 Kd7 18.Qg3 Rac8 19.Bc5 Ne8 20.Bxa7 Nd6 21.Bc5 Nf5 22.Qf2 Bg6 23.Qxe3 Nxe3 24.Rf2 Rc6 25.Na4 b5 26.Nc3 Rb8 27.Re2 Nc2 28.Rc1 b4 0-1
2022.01.30 TCh-BEL 2021-22
1443880 FM Elgersma, Onno (2313) IM Van der Stricht, G (2366) 1/2-1/2
1.c4 c6 2.e4 d5 3.exd5 cxd5 4.d4 Nf6 5.Nc3 e6 6.Nf3 Bb4 7.cxd5 Nxd5 8.Bd2 Nc6 9.Bd3 Be7 10.a3 Nxc3 11.Bxc3 O-O 12.O-O Bf6 13.Be4 Ne7 14.Bb4 Re8 15.Bc5 Nd5 16.Ne5 g6 17.Qf3 Bxe5 18.dxe5 b6 19.Bd6 Bb7 20.Qg3 Rc8 21.Rac1 Qd7 22.Qg5 Qa4 23.Bf3 Rxc1 24.Rxc1 Qf4 25.h4 h6 26.Qxf4 Nxf4 27.Rc4 Bxf3 28.Rxf4 Bd5 29.h5 gxh5 30.Rh4 Kh7 31.Rxh5 Rg8 32.g3 Bf3 33.Rh4 Rc8 34.Kh2 Rc1 35.g4 Rh1+ 36.Kg3 Rxh4 37.Kxh4 Kg6 38.Kg3 Bd1 39.Kf4 h5 40.gxh5+ Kxh5 41.Bb8 a6 42.Ba7 b5 43.Bb6 Kg6 44.b4 1/2-1/2
2021.12.28 Titled Tuesday 28th Dec
1467462 FM Elgersma, Onno (2282) IM Itkis, B (2343) 0-1
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 d6 5.O-O Bd7 6.c3 Nge7 7.d4 Ng6 8.Re1 Be7 9.Nbd2 h6 10.Nf1 Bg5 11.dxe5 Ngxe5 12.Nxe5 dxe5 13.Ne3 O-O 14.Qf3 b5 15.Bb3 Bxe3 16.Bxe3 Qe7 17.Rad1 Be6 18.Bd5 Bxd5 19.exd5 Na5 20.b4 Nb7 21.Qg3 Qf6 22.f4 Rfe8 23.fxe5 Rxe5 24.Bd4 Rxe1+ 25.Rxe1 Qg5 26.Qxg5 hxg5 27.Re7 Rc8 28.Bc5 a5 29.a3 a4 30.Kf2 Nd6 31.Bxd6 cxd6 32.Re3 f5 33.Rd3 Kf7 34.Kf3 Kf6 35.Re3 Rc7 36.g4 f4 37.Re6+ Kf7 38.Rxd6 Rxc3+ 39.Ke4 Rxa3 40.Kf5 f3 41.Kxg5 f2 42.Rd7+ Ke8 0-1
2021.12.28 Titled Tuesday 28th Dec
1466698 FM Elgersma, Onno (2282) Orzechowski, J (2119) 1-0
1.Nc3 d5 2.e4 dxe4 3.Nxe4 Nd7 4.Qe2 Ngf6 5.Nf3 Nxe4 6.Qxe4 Nf6 7.Qe2 g6 8.g3 Bg7 9.Bg2 O-O 10.O-O Be6 11.d4 Bd5 12.Rd1 c6 13.Bf4 Re8 14.c4 Be4 15.Be5 Qb6 16.a3 a5 17.h3 a4 18.g4 Rad8 19.c5 Qa5 20.Qe3 Bxf3 21.Bxf3 Nd5 22.Qe2 Rd7 23.h4 Bxe5 24.Qxe5 Qc7 25.Bxd5 cxd5 26.Qxc7 Rxc7 27.Rac1 e5 28.dxe5 Rxe5 29.Rd4 Re4 30.Rxe4 dxe4 31.Rc4 f5 32.Kg2 Kf7 33.Kg3 Kf6 34.Kf4 h6 35.Rb4 g5+ 36.hxg5+ hxg5+ 37.Ke3 Rxc5 38.Rb6+ Ke5 39.gxf5 Kxf5 40.Rxb7 Rc1 41.Rf7+ Kg4 42.Kxe4 Rc2 43.f3+ Kg3 44.Rb7 Re2+ 45.Kf5 Kxf3 46.Kxg5 Re4 47.Rb4 Re2 48.Kf5 Kf2 49.Rf4+ Ke1 50.Re4 Kd2 51.Rxe2+ Kxe2 52.Ke4 Kd2 53.Kd4 Kc2 54.Kc4 Kxb2 55.Kb4 Kc2 56.Kxa4 Kd3 57.Kb5 Kd4 58.a4 Kd5 59.a5 Kd6 60.Kb6 Kd7 61.a6 1-0
2021.12.28 Titled Tuesday 28th Dec
1467738 FM Elgersma, Onno (2282) WIM Havanecz, B (2229) 1-0
1.e4 c6 2.Nf3 d5 3.Nc3 Bg4 4.h3 Bxf3 5.Qxf3 e6 6.d4 Nf6 7.Bd3 Be7 8.O-O dxe4 9.Nxe4 Qxd4 10.Be3 Qd8 11.Rad1 Nbd7 12.Qg3 O-O 13.Bh6 Ne8 14.Ng5 Bxg5 15.Bxg5 f6 16.Bf4 Qe7 17.c4 e5 18.Bc1 Nc5 19.Bc2 Nd6 20.b4 Ne6 21.c5 Nf7 22.Bb3 Kh8 23.Qh4 Nd4 24.Bc4 Rad8 25.Kh1 Nf5 26.Qg4 Rxd1 27.Rxd1 Nd4 28.Bd3 Re8 29.Qh5 e4 30.Bc4 Ne6 31.Qg4 Nfg5 32.h4 Nf7 33.Qxe4 Kg8 34.Bd3 Nf8 35.Qg4 Ne5 36.Qg3 Nxd3 37.Qxd3 f5 38.Qxf5 Qxh4+ 39.Kg1 Ng6 40.Be3 Qxb4 41.Rd7 Qc3 42.Qf7+ Kh8 43.Bd4 Qc1+ 44.Kh2 Qh6+ 45.Kg3 1-0
2021.12.28 Titled Tuesday 28th Dec
1468003 IM Migot, T (2353) FM Elgersma, Onno (2282) 1/2-1/2
1.e4 c6 2.Nf3 d5 3.exd5 cxd5 4.Bb5+ Nc6 5.Ne5 Bd7 6.Bxc6 bxc6 7.d4 e6 8.Qh5 g6 9.Qf3 f6 10.Nxd7 Qxd7 11.O-O Bd6 12.c4 Kf7 13.Nc3 Ne7 14.Re1 h5 15.Bf4 Nf5 16.Rad1 g5 17.Bxd6 Qxd6 18.Qd3 Rab8 19.b3 g4 20.Na4 dxc4 21.Qxc4 Rb4 22.Qa6 Rxd4 23.Rxd4 Nxd4 24.Qxa7+ Kg6 25.Qc5 Rd8 26.Qc4 Qd5 27.Qd3+ Nf5 28.Qe2 Nd4 29.Qb2 h4 30.Nc3 Qf5 31.Qb1 Qxb1 32.Rxb1 h3 33.b4 Kf5 34.a4 Rb8 35.b5 cxb5 36.Nxb5 Kg6 37.Rb4 Nxb5 38.axb5 Kg5 39.gxh3 gxh3 40.b6 e5 41.b7 f5 42.Kf1 e4 43.Ke2 Kg4 44.Rb6 Kf4 45.Rb3 Kg4 46.Kd2 Kf4 47.Ke2 Ke5 48.Ke3 f4+ 49.Ke2 Kd4 50.Rb4+ Ke5 51.Rb5+ Kd4 52.Kd2 e3+ 53.fxe3+ fxe3+ 54.Ke2 Kc4 55.Rb1 Kd4 56.Rb2 Kc3 57.Rb6 Kd4 58.Rd6+ Ke5 59.Rd7 Ke4 60.Re7+ Kf4 61.Rh7 Ke4 62.Rh4+ Kf5 63.Rh7 Ke4 64.Rf7 Kd4 65.Re7 Rg8 66.Kf3 Rf8+ 67.Kg3 Rb8 68.Kf3 Rf8+ 69.Ke2 Rf2+ 70.Ke1 Rb2 71.Rd7+ Ke4 72.Rd8 Rxb7 73.Re8+ Kf3 74.Rf8+ Kg2 75.Rg8+ Kxh2 76.Ke2 Re7 77.Rg6 Kh1 78.Rg3 h2 79.Rg8 Re4 80.Rg7 Ra4 81.Kxe3 Ra2 82.Kf3 Ra3+ 83.Kf2 Ra2+ 84.Kf1 Ra1+ 85.Kf2 Ra6 86.Kf1 Rf6+ 87.Ke2 Rf4 88.Ke1 Rf5 89.Ke2 Ra5 90.Kf2 Ra2+ 91.Kf1 Ra1+ 92.Kf2 Rg1 93.Ra7 Rg2+ 94.Kf1 Rg1+ 95.Kf2 Rb1 96.Rg7 Rg1 97.Ra7 1/2-1/2
2021.12.28 Titled Tuesday 28th Dec
1467244 FM Elgersma, Onno (2282) WIM Karavaeva, O (2260) 0-1
1.c4 e6 2.Nf3 d5 3.d4 c6 4.Qc2 Nf6 5.Nbd2 Nbd7 6.e3 Bd6 7.Bd3 O-O 8.e4 dxe4 9.Nxe4 Nxe4 10.Bxe4 h6 11.O-O e5 12.Rd1 exd4 13.Rxd4 Qc7 14.Be3 Ne5 15.Rad1 Nxf3+ 16.Bxf3 Bxh2+ 17.Kf1 Be5 18.Rh4 Rd8 19.Re1 Bf6 20.Rh5 Be6 21.Kg1 Rd7 22.c5 Rad8 23.Bxh6 gxh6 24.Rxh6 Bg7 25.Qh7+ Kf8 26.Rh5 Qf4 27.Rh4 Qf5 0-1
2021.12.28 Titled Tuesday 28th Dec
1467029 IM Estrada Nieto, J (2253) FM Elgersma, Onno (2282) 0-1
1.e4 Nc6 2.Nf3 d6 3.d4 Nf6 4.Nc3 g6 5.Bb5 a6 6.Bxc6+ bxc6 7.h3 Bg7 8.O-O O-O 9.Be3 Rb8 10.b3 Nd7 11.Qd2 Bb7 12.Bh6 c5 13.Bxg7 Kxg7 14.d5 e5 15.Nh2 h5 16.f4 exf4 17.Qxf4 Qe7 18.Rae1 Rbe8 19.Nf3 Ne5 20.Nxe5 Qxe5 21.Qxe5+ Rxe5 22.Re2 f6 23.Rfe1 Bc8 24.Nd1 Rfe8 25.Nf2 f5 26.Kf1 fxe4 27.Rxe4 Rxe4 28.Rxe4 Rxe4 29.Nxe4 Bf5 30.Nc3 Bxc2 31.Kf2 Kf6 32.Ke3 Ke5 33.g3 Bf5 34.h4 Bg4 35.a3 Bh3 36.b4 cxb4 37.axb4 Bg2 38.Ne2 Bxd5 39.Nf4 Bf7 40.Nd3+ Kd5 41.Nf4+ Kc4 42.Nd3 Kc3 43.Nf4 Kxb4 44.Nd3+ Kb5 45.Nf4 c5 46.Kd3 d5 47.Kc3 d4+ 48.Kd2 a5 49.Nd3 Bd5 50.Ne5 Be4 51.Nd7 c4 52.Nf6 c3+ 53.Ke2 Bf5 54.Nd5 c2 55.Kd2 d3 56.Nf4 a4 57.Nd5 a3 58.Ne3 a2 59.Nd5 a1=Q 60.Nc3+ Qxc3+ 0-1
2021.12.28 Titled Tuesday 28th Dec
1468056 FM Elgersma, Onno (2282) FM Farmani Anosheh, A (2345) 1-0
1.e4 c5 2.Nf3 Nc6 3.Bb5 g6 4.O-O Bg7 5.Re1 e5 6.Bxc6 bxc6 7.c3 Ne7 8.d4 cxd4 9.cxd4 exd4 10.Nxd4 O-O 11.Nc3 d5 12.exd5 cxd5 13.Bg5 f6 14.Be3 Kh8 15.Qd2 g5 16.Rad1 Bd7 17.Nb3 Bc6 18.Bc5 Rf7 19.Nd4 Bd7 20.Ne6 Bxe6 21.Rxe6 Qd7 22.Rxe7 Rxe7 23.Bxe7 Qxe7 24.Nxd5 Qf7 25.b4 Rd8 26.a4 f5 27.b5 h6 28.a5 f4 29.b6 axb6 30.axb6 f3 31.g3 Qe6 32.Qd3 Rf8 33.b7 Qh3 34.Qf1 Qf5 35.Ne3 Qe4 36.Qd3 Qxb7 37.Qg6 Qc8 38.g4 Qc7 39.h3 1-0
2021.12.28 Titled Tuesday 28th Dec
1467549 WFM Novikova, Galina (2073) FM Elgersma, Onno (2282) 1-0
1.e4 Nc6 2.Nf3 d6 3.d4 Nf6 4.Nc3 g6 5.Be3 Bg7 6.h3 O-O 7.Qd2 e5 8.O-O-O exd4 9.Nxd4 Re8 10.f3 d5 11.Nxc6 bxc6 12.g4 Rb8 13.Bh6 Bh8 14.g5 Nh5 15.exd5 Qe7 16.Bc4 cxd5 17.Bxd5 Qb4 18.Bb3 Be6 19.Rhe1 a5 20.Rxe6 Rxe6 21.Qd8+ Re8 22.Qxc7 Qe7 23.Rd7 Qe1+ 24.Nd1 Bxb2+ 25.Kxb2 Qe5+ 26.Qxe5 Rxe5 27.Kc1 Rf5 28.Bd5 a4 29.Be4 Rfb5 30.Nc3 Rc5 31.Nd5 Re8 32.Ra7 Rc4 33.Kd2 Kh8 34.Kd3 Rcc8 35.Rxf7 Ng3 36.Nf6 Red8+ 37.Bd5 1-0
2021.12.28 Titled Tuesday 28th Dec
1467808 FM Elgersma, Onno (2282) FM Jorquera, M (2233) 1-0
1.b3 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.d4 O-O 5.e3 d6 6.Be2 Nbd7 7.O-O e5 8.c4 e4 9.Nfd2 Re8 10.Nc3 Nf8 11.b4 h5 12.Qc2 Bf5 13.Rfc1 Ne6 14.Qd1 h4 15.h3 Ng5 16.Bf1 Qd7 17.b5 Ngh7 18.a4 g5 19.Be2 g4 20.hxg4 Bxg4 21.Ndxe4 Bxe2 22.Nxf6+ Nxf6 23.Qxe2 h3 24.Qf3 hxg2 25.Qxg2 c6 26.a5 a6 27.bxc6 bxc6 28.Rab1 Kh7 29.Kf1 Rg8 30.Ke2 Rae8 31.Rh1+ Bh6 32.Qf3 Qg4 33.Qxg4 Nxg4 34.Kf3 f5 35.Rh5 Kg6 36.Rbh1 Rb8 37.Ba1 Rb3 38.e4 fxe4+ 39.Kxg4 Kh7+ 40.Kf5 Rf8+ 41.Ke6 1-0
2021.12.28 Titled Tuesday 28th Dec
1466818 FM Elgersma, Onno (2282) IM Kezin, R (2494) 0-1
1.c4 e6 2.Nc3 d5 3.e3 Nf6 4.Nf3 b6 5.d4 Bb7 6.Bd3 Nbd7 7.O-O Bd6 8.b3 O-O 9.Bb2 Ne4 10.Rc1 a6 11.cxd5 exd5 12.Ne2 Qe7 13.Ng3 g6 14.Qc2 Rac8 15.Qe2 b5 16.a4 c6 17.axb5 cxb5 18.Nd2 Nef6 19.f3 h5 20.e4 h4 21.Nh1 Bf4 22.e5 Nh5 23.Nf2 Qg5 24.Rcd1 Bxh2+ 25.Kxh2 Nf4 26.Nh3 Qg3+ 27.Kh1 Nxe2 28.Bxe2 Rc2 29.Ba3 Rfc8 30.Bd3 R2c3 31.Bb1 Nf8 32.Be7 Ne6 33.f4 Qg4 34.f5 Rxh3+ 35.gxh3 Qxh3+ 36.Kg1 Rc3 37.Rf2 Rg3+ 0-1
2021.12.28 Titled Tuesday 28th Dec
1467132 GM Kislinsky, A (2351) FM Elgersma, Onno (2282) 1-0
1.e4 Nc6 2.Nc3 d6 3.d4 Nf6 4.h3 g6 5.Nf3 Bg7 6.Bg5 h6 7.Be3 O-O 8.Qd2 Kh7 9.O-O-O Nd7 10.g4 e5 11.d5 Ne7 12.Bd3 c6 13.dxc6 bxc6 14.Bc4 Nb6 15.Bb3 d5 16.exd5 cxd5 17.Bxb6 axb6 18.Nxd5 Bb7 19.Nxe7 Qxe7 20.Qe3 e4 21.Nd4 Rfd8 22.c3 Bf6 23.Kb1 Bg5 24.Qe2 e3 25.f3 Bf6 26.h4 Bxd4 27.cxd4 Qf6 28.d5 Ba6 29.Qxe3 Re8 30.Qd4 Qd6 31.h5 g5 32.Rhe1 Rxe1 33.Rxe1 Rd8 34.Bc2+ Kg8 35.Qe4 Qf6 36.Qe5 Qxe5 37.Rxe5 Bb7 38.Bb3 Kg7 39.Kc2 Rd6 40.Kc3 Kf6 41.Kd4 Rd8 42.Bc4 Rd6 43.a4 Rd8 44.b4 Ra8 45.Bb3 Rd8 46.a5 bxa5 47.bxa5 Ra8 48.d6 Ra6 49.Rf5+ Kg7 50.Rxf7+ Kh8 51.Rxb7 1-0
2021.12.21 Titled Tuesday 21st Dec
1470213 WGM Tsatsalashvili, K (2331) FM Elgersma, Onno (2282) 0-1
1.Nf3 d5 2.d4 Nf6 3.Bg5 c5 4.c3 e6 5.Nbd2 Nc6 6.e3 Bd6 7.Bd3 O-O 8.O-O h6 9.Bh4 e5 10.dxe5 Nxe5 11.Nxe5 Bxe5 12.Nf3 Bc7 13.Bc2 Be6 14.Qd3 g6 15.Rad1 Kg7 16.Qe2 Qe7 17.h3 Rfe8 18.Nh2 Bxh2+ 19.Kxh2 Ng4+ 20.Kg3 g5 21.hxg4 gxh4+ 22.Kh2 Qg5 23.Qd3 Rh8 24.f3 h5 25.c4 dxc4 26.Qc3+ Qf6 27.g5 Qxc3 28.bxc3 Rhd8 29.f4 Bg4 30.Rxd8 Rxd8 31.Rf2 Bd1 32.Kh3 Bxc2 33.Rxc2 Rd3 34.Kxh4 Kg6 35.g4 hxg4 36.Kxg4 Rxe3 37.f5+ Kg7 38.Kf4 Re1 39.Rd2 Rc1 40.Rd7 Kf8 41.f6 Ke8 42.Re7+ Kf8 43.Rxb7 Re1 44.Rxa7 Re8 45.Rc7 Kg8 46.Rxc5 Kh7 47.Rxc4 Kg6 48.a4 Ra8 49.Rb4 Ra5 50.c4 Rc5 51.Ke4 Rxg5 52.Kd4 Kxf6 53.c5 Rg4+ 54.Kc3 Rg1 55.Rc4 Rg8 56.c6 Ke6 57.Kb4 Kd5 58.Rc5+ Kd6 59.Rc4 Rb8+ 60.Ka5 Kc7 61.Rf4 Kxc6 62.Rf6+ Kc5 63.Rxf7 Ra8+ 0-1
2021.12.21 Titled Tuesday 21st Dec
1470759 FM Elgersma, Onno (2282) FM Begunov, K (2325) 1/2-1/2
1.Nc3 d5 2.e4 dxe4 3.Nxe4 Bf5 4.Ng3 Bg6 5.Nf3 e6 6.d4 Nd7 7.Bd3 Ngf6 8.O-O c5 9.dxc5 Bxc5 10.Bg5 O-O 11.Bxg6 hxg6 12.c3 Qb6 13.Qb3 Qxb3 14.axb3 a6 15.Rfd1 Rfc8 16.h3 Kf8 17.Nd2 Be7 18.Nc4 Nd5 19.Bd2 Nc5 20.Ra3 Nd3 21.Ra2 Rc7 22.Be3 Nxe3 23.Nxe3 Rd8 24.Rd2 Rcd7 25.Kf1 Bg5 26.Ne4 Bxe3 27.fxe3 Nc1 28.Rxd7 Rxd7 29.Ra4 Nxb3 30.Rb4 Na5 31.Nc5 Rc7 32.Ne4 Ke7 33.Ke2 Nc6 34.Rb6 Ne5 35.Rb4 Nd7 36.Rd4 b5 37.Kd2 Nc5 38.Nxc5 Rxc5 39.b4 Rd5 40.Rxd5 exd5 41.Kd3 Kd6 42.Kd4 g5 43.g3 f6 44.e4 dxe4 45.Kxe4 g6 46.Kd4 f5 47.g4 f4 48.Ke4 Ke6 49.Kd4 Kd6 50.Ke4 f3 51.Kxf3 Kd5 52.Ke3 Kc4 53.Kd2 Kb3 54.Kd3 Kb2 55.Kd2 Kb3 56.Kd3 Kb2 57.Kd2 Ka2 58.Kc2 Ka3 59.Kd3 Kb2 1/2-1/2
2021.12.21 Titled Tuesday 21st Dec
1469746 GM Jakubowski, K (2471) FM Elgersma, Onno (2282) 0-1
1.e4 Nc6 2.d4 d6 3.d5 Nb8 4.c4 Nf6 5.Nc3 g6 6.h4 Bg7 7.h5 Nxh5 8.g4 Nf6 9.Be2 c6 10.Be3 Na6 11.g5 Nd7 12.Qd2 Nac5 13.O-O-O Qa5 14.Bd4 Ne5 15.f4 Ned3+ 16.Bxd3 Bxd4 17.Nge2 Bg7 18.Rh4 cxd5 19.cxd5 Bd7 20.Kb1 Rc8 21.Bc2 b5 22.Nd4 b4 23.Nce2 Qb6 24.Rdh1 h5 25.gxh6 Bf6 26.R4h2 a5 27.f5 g5 28.Rc1 a4 29.Ka1 b3 30.Bb1 bxa2 31.Bxa2 Rb8 32.Rb1 Nxe4 33.Qe3 Nc5 0-1
2021.12.21 Titled Tuesday 21st Dec
1470519 IM Sieciechowicz, M (2388) FM Elgersma, Onno (2282) 1-0
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.cxd5 exd5 5.Bg5 c6 6.e3 Bd6 7.Bd3 O-O 8.Nge2 Re8 9.Qc2 h6 10.Bh4 a5 11.O-O-O b5 12.e4 dxe4 13.Nxe4 Be7 14.Nc5 Nd5 15.Bxe7 Qxe7 16.Ng3 Nb4 17.Qb1 Qg5+ 18.Rd2 Nd7 19.Nce4 Qf4 20.a3 Nxd3+ 21.Qxd3 Nb6 22.Kb1 Nc4 23.Re2 Be6 24.Rhe1 Red8 25.Nh5 Qf5 26.g4 Qg6 27.h3 Bd5 28.Nf4 Qh7 29.Nh5 Kh8 30.f4 b4 31.a4 f5 32.Nc5 fxg4 33.Qxh7+ Kxh7 34.hxg4 Rf8 35.Re7 Rf7 36.Rxf7 Bxf7 37.Re7 Bxh5 38.gxh5 Rf8 39.Ne6 Rf6 40.Rxg7+ Kh8 41.Rg6 Rf5 42.Rxh6+ Kg8 43.Rg6+ Kf7 44.Ng5+ Ke7 45.Rxc6 Nd6 46.Rc7+ Kf6 47.Rc6 Ke7 48.h6 Rxf4 49.h7 Rf1+ 50.Kc2 Rh1 51.Ra6 Rh2+ 52.Kd3 Rh5 53.Ra8 Rxg5 54.h8=Q Rg3+ 55.Ke2 Rg6 56.Qe5+ Kd7 57.Ra7+ Kc6 58.Ra6+ Kd7 59.Rxd6+ Rxd6 60.Qxa5 Re6+ 61.Kd3 Rg6 62.Qb5+ Kc7 63.Qxb4 Rg3+ 64.Kc4 Rg6 65.Qc5+ Rc6 66.b4 Kb7 67.Qxc6+ Kxc6 68.a5 Kb7 69.Kc5 Ka7 70.Kc6 Ka6 71.d5 Ka7 72.d6 Ka6 73.d7 Ka7 74.d8=Q Ka6 75.Qb6# 1-0
2021.12.21 Titled Tuesday 21st Dec
1470008 FM Elgersma, Onno (2282) IM Shahade, G (2476) 0-1
1.c4 Nf6 2.Nc3 d5 3.cxd5 Nxd5 4.Nf3 g6 5.h4 Bg7 6.h5 c5 7.e4 Nxc3 8.bxc3 Nc6 9.Rb1 O-O 10.Bc4 Na5 11.Be2 Be6 12.Qa4 b6 13.e5 Qd5 14.Qh4 Bf5 15.hxg6 Bxg6 16.c4 Qe4 17.Qxe4 Bxe4 18.d3 Bxf3 19.Bxf3 Rad8 20.Be4 Bxe5 21.Bxh7+ Kg7 22.Be4 Rh8 23.Rxh8 Rxh8 24.Ke2 Rh1 25.g3 Rh2 26.Be3 e6 27.a4 f5 28.Ba8 Kf6 29.Bf3 Bxg3 30.Rg1 Be5 31.Rg8 f4 32.Rf8+ Ke7 33.Bxf4 Bxf4 34.Rxf4 Nb3 35.Rg4 Nd4+ 36.Ke3 Rh3 37.Rg3 Nf5+ 38.Kf4 Nxg3 39.fxg3 Rh2 40.Bc6 Rd2 41.Ke3 Ra2 42.g4 Kf6 43.Kf4 Rf2+ 44.Ke4 Re2+ 45.Kf4 Rd2 46.Ke4 Kg5 47.Bd7 Ra2 48.Bxe6 Rxa4 49.d4 cxd4 50.Kxd4 Ra5 51.Bf5 Rc5 52.Kc3 Kf4 53.Kb4 Ke3 54.Be6 Kd4 55.Bd5 a5+ 56.Kb3 b5 57.Bg8 bxc4+ 58.Kc2 c3 59.g5 Rxg5 0-1
2021.12.21 Titled Tuesday 21st Dec
1469284 FM Elgersma, Onno (2282) GM Sarana, A (2666) 0-1
1.e4 c5 2.Nf3 d6 3.Bb5+ Nd7 4.d4 cxd4 5.Qxd4 a6 6.Bxd7+ Qxd7 7.Nc3 Qc6 8.O-O e5 9.Qd3 Be6 10.Nd5 Rc8 11.c3 Ne7 12.Rd1 Qc4 13.Qxc4 Rxc4 14.Nd2 Rc8 15.Nxe7 Bxe7 16.Nf1 f5 17.exf5 Bxf5 18.Ne3 Be6 19.Nd5 Bd8 20.Be3 Rf8 21.Rd2 Rc4 22.Rad1 b5 23.Nb4 Be7 24.Nxa6 d5 25.a3 Kf7 26.Nb4 Bxb4 27.axb4 Ra8 28.Rf1 g6 29.f4 e4 30.Bd4 h5 31.Kf2 Bg4 32.Ke3 Ke6 33.h3 Bf5 34.Rg1 h4 35.Rdd1 Rc6 36.Ra1 Rca6 37.Rxa6+ Rxa6 38.Rb1 Ra2 39.Kd2 e3+ 0-1
2021.12.21 Titled Tuesday 21st Dec
1470596 IM Arabidze, M (2413) FM Elgersma, Onno (2282) 1-0
1.Nf3 Nc6 2.d4 Nf6 3.c4 d6 4.g3 g6 5.Bg2 Bg7 6.O-O O-O 7.Nc3 Bf5 8.Ne1 e5 9.d5 Ne7 10.e4 Bg4 11.f3 Bc8 12.Nd3 Nd7 13.Be3 f5 14.c5 Nf6 15.cxd6 cxd6 16.Kh1 Bd7 17.Rc1 fxe4 18.fxe4 Ng4 19.Qe2 Rxf1+ 20.Rxf1 Nxe3 21.Qxe3 a6 22.a3 Rc8 23.h3 Kh8 24.Kh2 Ng8 25.Qf3 Qe7 26.Nf2 Rf8 27.Qe2 Nf6 28.Nd3 Nh5 29.Rxf8+ Qxf8 30.Nd1 Nxg3 31.Kxg3 Bb5 32.N1f2 Qf4+ 33.Nxf4 exf4+ 34.Kf3 Bxe2+ 35.Kxe2 Bxb2 36.a4 b5 37.axb5 axb5 38.Nd3 Be5 39.Nxe5 1-0
2021.12.21 Titled Tuesday 21st Dec
1470342 FM Elgersma, Onno (2282) IM Shyam, N (2442) 1-0
1.c4 e6 2.Nc3 d5 3.d4 Be7 4.Nf3 Nf6 5.g3 O-O 6.Bg2 dxc4 7.Ne5 Nc6 8.Bxc6 bxc6 9.Nxc6 Qe8 10.Nxe7+ Qxe7 11.O-O c5 12.dxc5 Qxc5 13.Be3 Qh5 14.f3 e5 15.Qd6 Bh3 16.Rfd1 e4 17.Qf4 exf3 18.exf3 Be6 19.Rd6 Rfd8 20.Rad1 Rxd6 21.Rxd6 Qg6 22.Rd2 h6 23.Kg2 a6 24.Qe5 Re8 25.Qd4 Qf5 26.g4 Qg6 27.Bf2 h5 28.h3 hxg4 29.hxg4 Bxg4 30.fxg4 Nxg4 31.Bg3 Ne3+ 32.Kf2 Ng4+ 33.Kg2 Ne3+ 34.Kf2 Qf5+ 35.Qf4 Qh3 36.Kg1 Nf5 37.Bf2 Re6 38.Ne4 Rg6+ 39.Ng5 Rxg5+ 40.Qxg5 Kh7 41.Rd5 g6 42.Rd7 Kg7 43.Bd4+ Nxd4 44.Rxd4 Qe6 45.Qg3 1-0
2021.12.21 Titled Tuesday 21st Dec
1470871 IM Langner, L1 (2370) FM Elgersma, Onno (2282) 0-1
1.e4 Nc6 2.Nf3 d6 3.d4 Nf6 4.Nc3 g6 5.Be2 Bg7 6.O-O O-O 7.h3 e5 8.Be3 exd4 9.Nxd4 Re8 10.f3 Nh5 11.Qd2 Qh4 12.Nxc6 bxc6 13.Bf2 Qf4 14.Rad1 Rb8 15.Be3 Qg3 16.Bf2 Qe5 17.Rb1 Nf4 18.Nd1 Qg5 19.Ne3 Nxg2 20.Kh1 Bxh3 21.Rg1 Qh6 22.Rxg2 Be5 23.Nf1 Qh5 24.Bg3 Bxg3 25.Nxg3 Qh4 26.Qd4 Re5 27.Qf2 Rg5 28.Rbg1 Rxb2 29.Rh2 Rxc2 30.f4 Ra5 31.Nf5 Qxf2 32.Ne7+ Kf8 33.Rxf2 Kxe7 34.f5 gxf5 35.exf5 Bxf5 36.Re1 Be4+ 37.Kg1 Rg5+ 38.Kf1 d5 39.Bd3 Rxf2+ 40.Kxf2 f5 41.Bxe4 fxe4 42.Ke3 Kd6 43.Kd4 Rg3 44.Rd1 c5# 0-1
2021.12.21 Titled Tuesday 21st Dec
1469641 WFM Zherebtsova, A (2182) FM Elgersma, Onno (2282) 0-1
1.d4 d5 2.Nf3 c6 3.c4 Nf6 4.e3 g6 5.Nbd2 Bg7 6.b3 O-O 7.Bb2 Bf5 8.Be2 Ne4 9.O-O Nd7 10.Re1 a5 11.a3 Qb6 12.Rc1 Nxd2 13.Nxd2 e5 14.cxd5 cxd5 15.dxe5 Nxe5 16.Bd4 Qe6 17.Nf3 f6 18.Bc5 Rfd8 19.Nd4 Qd7 20.Bb5 Nc6 21.Bb6 Rdc8 22.Nxf5 Qxf5 23.Rc5 Ne7 24.Rxc8+ Nxc8 25.Bd4 Nd6 26.Bd3 Qe6 27.Qb1 Bf8 28.Qb2 Be7 29.Rc1 Kf7 30.h3 Rc8 31.Rxc8 Qxc8 32.Qc3 Qxc3 33.Bxc3 Ne4 34.Bxa5 Bxa3 35.Kf1 Ke6 36.f3 Nc5 37.Bc2 Bb2 38.Ke2 f5 39.g4 Be5 40.gxf5+ gxf5 41.Bb6 Nd7 42.Ba5 b6 43.Be1 Bd6 44.Bc3 Bc5 45.Bd3 Nf8 46.e4 fxe4 47.fxe4 d4 48.Bc4+ Ke5 49.Bd2 Kxe4 50.Bd3+ Ke5 51.Bh6 Ng6 52.h4 Nxh4 53.Bxh7 Nf5 54.Bc1 Nd6 55.Bb2 Ne4 56.Kd3 Nf2+ 57.Ke2 Nh3 58.Bc2 Nf4+ 59.Kd2 Bb4+ 60.Kd1 Kd5 61.Bh7 Ng2 62.Ke2 Nf4+ 63.Kd1 Bc3 64.Bc1 Ne6 65.Kc2 Nc5 66.Bg8+ Ke4 67.Bc4 Bb4 68.Kb2 d3 69.Bg5 Nd7 70.Bh6 Ne5 71.Be6 Nf3 72.Bc4 Nd4 73.Kc1 Ne2+ 74.Kb2 Nd4 75.Kc1 Nf3 76.Bg8 Kd4 77.Bg7+ Ke3 78.Bh6+ Ke2 79.Kb2 d2 80.Bc4+ Ke1 81.Bxd2+ Nxd2 82.Bd5 Kf2 83.Kc2 Ke3 84.Bc4 Kd4 85.Be6 Ne4 86.Bf7 Nf2 87.Kb2 Nd3+ 88.Kc2 Ne1+ 89.Kb2 Kd3 0-1
2021.12.21 Titled Tuesday 21st Dec
1470923 FM Elgersma, Onno (2282) Adury, Anant (1855) 1-0
1.Nc3 d5 2.e4 e6 3.d4 dxe4 4.Nxe4 Nd7 5.Nf3 Ngf6 6.Nxf6+ Nxf6 7.g3 c5 8.Bg2 cxd4 9.Qxd4 Qxd4 10.Nxd4 Bc5 11.Nb5 O-O 12.O-O Bd7 13.Nc3 Rac8 14.Bg5 Bc6 15.Bxf6 gxf6 16.Bxc6 Rxc6 17.Ne4 Be7 18.c3 f5 19.Nd2 Rd8 20.Nf3 b5 21.Rfd1 Rxd1+ 22.Rxd1 Bf6 23.Rd7 a5 24.Rb7 Rc5 25.Kg2 b4 26.cxb4 axb4 27.Rxb4 Rc2 28.a4 Bxb2 29.a5 Ba3 30.Rb8+ Kg7 31.Ne1 Ra2 32.Nd3 Bd6 33.Ra8 e5 34.a6 e4 35.Nc1 Ra3 36.Ne2 Bc5 37.Nc1 Ra1 38.Nb3 e3 39.Nxa1 1-0
2021.11.06 Dutch League 2021-22
1497834 FM Elgersma, Onno (2263) IM Van de Oudeweetering, A (2276) 1-0
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.d3 b5 6.Bb3 Be7 7.O-O O-O 8.Nc3 Bb7 9.Bd2 Nd4 10.Nxe5 Nxb3 11.axb3 d5 12.Re1 dxe4 13.Nxe4 Qd5 14.Nf3 Rad8 15.Bg5 Qc6 16.Ne5 Qb6 17.Bxf6 Bxf6 18.Nxf6+ Qxf6 19.Qg4 Rfe8 20.Qg3 h5 21.h4 Rd4 22.c3 Rxh4 23.Nd7 Rxe1+ 24.Rxe1 Qf4 25.Re8+ Kh7 26.Nf8+ Kh6 27.Re6+ 1-0
2021.10.21 Ey U18 2021
1505697 Schernthaner, David (2229) FM Elgersma, Onno (2313) 1/2-1/2
1.e4 c6 2.d4 d5 3.e5 Bf5 4.Nd2 e6 5.Nb3 Nd7 6.Nf3 Ne7 7.Be2 h6 8.O-O Bh7 9.a4 Nf5 10.a5 a6 11.Bd2 Be7 12.c4 O-O 13.Re1 Rc8 14.c5 g5 15.h3 f6 16.exf6 Nxf6 17.Bd3 Ne4 18.Qc2 Bf6 19.Bc3 Qc7 20.Nbd2 Nxd2 21.Qxd2 Qf7 22.Re2 Rce8 23.Rae1 Kh8 24.Qc2 Qg8 25.g4 Ng7 26.Bxh7 Qxh7 27.Qxh7+ Kxh7 28.Bd2 Kg6 29.Kg2 Rf7 30.Ne5+ Bxe5 31.Rxe5 Ref8 32.Be3 Rf6 33.Rh1 Kf7 34.Kg3 Rg6 35.Bd2 Rg8 36.f3 Ne8 37.h4 Nf6 38.hxg5 hxg5 39.Rh2 R8g7 40.Rh8 Ng8 41.Rh5 Kf6 42.Rh2 Kf7 43.Re1 Rh6 44.Reh1 Rxh2 45.Rxh2 Kg6 46.Rh5 Kf6 47.f4 gxf4+ 48.Bxf4 Kg6 49.Rg5+ Kf7 50.Rxg7+ Kxg7 51.Bg5 Kg6 52.Kf4 Nf6 53.Bxf6 Kxf6 54.b3 Kg6 55.Ke5 Kg5 56.Kxe6 Kxg4 57.Kd6 Kf4 58.Kc7 Ke4 59.Kxb7 Kxd4 60.Kxc6 Ke5 61.Kb6 d4 62.c6 d3 63.c7 d2 64.c8=Q d1=Q 65.Qc5+ Ke4 66.Qc4+ Ke5 67.Kxa6 Qd8 68.b4 Qa8+ 69.Kb5 Kd6 70.Qd4+ Kc7 71.Qc5+ Kd7 72.a6 Qe4 73.Qa7+ Kc8 74.Qc5+ Kd7 75.a7 Qe2+ 76.Qc4 Qe5+ 77.Kb6 Qf6+ 78.Kb7 Qf3+ 79.Ka6 Qf6+ 80.Ka5 Qa1+ 81.Kb5 Qe5+ 82.Qc5 Qe2+ 83.Ka5 Qa2+ 84.Kb6 Qe6+ 85.Kb7 Qe4+ 86.Ka6 Qe6+ 87.Qb6 Qa2+ 88.Kb5 Qe2+ 89.Kc5 Qf2+ 90.Kc4 Qxb6 91.a8=Q Qc6+ 92.Qxc6+ Kxc6 93.b5+ Kb6 94.Kb4 Kb7 95.Kc5 Kc7 96.b6+ Kb7 97.Kb5 Kb8 98.Kc6 Kc8 99.Kc5 Kb7 100.Kb5 Kb8 101.Ka5 Kb7 102.Kb5 1/2-1/2
2021.10.20 Ey U18 2021
1505678 FM Elgersma, Onno (2313) Kazakos, Markos (2149) 0-1
1.d4 Nf6 2.Nf3 g6 3.c4 Bg7 4.e3 O-O 5.Be2 c5 6.O-O cxd4 7.exd4 d5 8.Nc3 Nc6 9.h3 Be6 10.c5 Ne4 11.Be3 Qa5 12.Qb3 Qb4 13.Qxb4 Nxb4 14.Rac1 Rfd8 15.a3 Nc6 16.b4 Nxc3 17.Rxc3 a6 18.Rb3 Bf5 19.b5 axb5 20.Rxb5 Rd7 21.Rb6 Be4 22.Bb5 Rc7 23.Rxb7 Rxb7 24.Bxc6 Rba7 25.Bxa8 Rxa8 26.Rc1 Rxa3 27.c6 Ra8 28.Rc5 Rc8 29.Nd2 Bd3 30.Rxd5 e6 31.Rc5 Bf8 32.Rc3 Bb5 33.c7 Bd6 34.Ne4 Bxc7 35.Nd6 Bxd6 36.Rxc8+ Kg7 37.d5 exd5 38.Rd8 Be7 39.Rxd5 Bc4 40.Bd4+ Kf8 41.Ra5 Ke8 42.Bc5 Bf6 43.Ra7 h5 44.f3 Bd5 45.Kf2 h4 46.f4 Bd8 47.Kg1 f6 48.Bf2 g5 49.fxg5 fxg5 50.Be3 Be6 51.Ra8 Kd7 52.Bf2 Bf6 53.Ra5 Kd6 54.Be3 Bd5 55.Ra6+ Ke7 56.Kf2 Kf7 57.Ra5 Ke6 58.g3 Be5 0-1
2021.10.19 Ey U18 2021
1505664 Khalikov, Bulat (2180) FM Elgersma, Onno (2313) 0-1
1.e4 c6 2.d4 d5 3.Nd2 dxe4 4.Nxe4 Nf6 5.Nxf6+ exf6 6.c3 Bd6 7.Bd3 O-O 8.Qc2 Re8+ 9.Ne2 h5 10.O-O h4 11.h3 Nd7 12.Bf4 Nf8 13.Qd2 Be6 14.Bxd6 Qxd6 15.Qf4 Qxf4 16.Nxf4 Rad8 17.Nxe6 Nxe6 18.Rfe1 g6 19.Rad1 Kg7 20.Kf1 f5 21.Bc4 Nc7 22.Rxe8 Nxe8 23.Re1 Kf6 24.Re5 Nd6 25.Bd3 Re8 26.Ra5 a6 27.a4 Kg5 28.b4 Kf4 29.d5 Rc8 30.Ke2 g5 31.Rc5 cxd5 32.Rxd5 Ne4 33.Bxe4 fxe4 34.Rd7 f5 35.Kd2 b5 36.axb5 axb5 37.Rd5 g4 38.hxg4 fxg4 39.Rxb5 Ra8 40.Ra5 Rh8 41.Ke2 e3 42.fxe3+ Kg3 43.Kf1 Kh2 44.Ra2 Rf8+ 45.Ke1 Kg1 46.Re2 h3 47.gxh3 gxh3 48.Kd2 Rf2 0-1
2021.10.18 Ey U18 2021
1505624 FM Elgersma, Onno (2313) FM Kanyamarala, Tarun (2309) 0-1
1.d4 Nf6 2.Nf3 d5 3.e3 e6 4.c4 a6 5.Nc3 b6 6.Bd2 Bb7 7.cxd5 exd5 8.Bd3 Bd6 9.O-O O-O 10.Ne5 c5 11.f4 Nc6 12.Qf3 cxd4 13.Nxc6 Bxc6 14.exd4 b5 15.Ne2 Ne4 16.Bxe4 dxe4 17.Qe3 f5 18.a3 Bd5 19.Rfd1 Qe7 20.Ba5 Rac8 21.Rac1 Qe6 22.Bb4 Bxb4 23.axb4 Bc4 24.Ng3 Rfd8 25.Rc3 g6 26.Rdc1 Qd6 27.b3 Be6 28.Rxc8 Bxc8 29.Rc5 Be6 30.Ne2 Qe7 31.g3 Bd5 32.Nc3 Bxb3 33.d5 Bc4 34.Kf2 Qg7 35.h3 Bd3 36.Rc6 Bc4 37.d6 Qf6 38.Qb6 e3+ 39.Qxe3 Rxd6 40.Rc8+ Kg7 41.Rc7+ Bf7 42.Qe5 Re6 43.Qxf6+ Rxf6 44.Ne2 Re6 45.Ng1 Kf6 46.Nf3 Re7 47.Rxe7 Kxe7 48.Ne5 Bd5 49.Ke3 Kd6 50.Kd4 Be6 51.h4 Bd5 52.Nd3 Bb7 53.Nc5 Bc8 54.Nd3 Bb7 55.Ne5 Bd5 56.g4 fxg4 57.Nxg4 Bf3 58.Ne5 Bd5 59.Nd3 Bb7 60.Nc5 Bc8 61.Ne4+ Kc6 62.Nf6 h5 63.Nd5 Kd6 64.Ne3 Be6 65.Nd1 Bg4 66.Nc3 Bf3 67.Ke3 Bb7 68.Kd4 Ke6 69.Ne4 Bxe4 70.Kxe4 Kd6 71.f5 gxf5+ 72.Kxf5 Kc6 73.Kg5 a5 74.bxa5 b4 75.Kxh5 b3 76.Kh6 b2 77.h5 b1=Q 78.Kg7 Qb2+ 79.Kg8 Qf6 80.Kh7 Qf7+ 81.Kh6 Qg8 82.a6 Qh8+ 83.Kg6 Kb6 84.a7 Kxa7 85.h6 Kb6 0-1
2021.10.18 Ey U18 2021
1505642 FM Elgersma, Onno (2313) CM Ilyasli, Ughur (2079) 0-1
1.e4 c5 2.Nf3 Nc6 3.Bb5 g6 4.O-O Bg7 5.Re1 Nf6 6.e5 Nd5 7.Nc3 Nc7 8.Bxc6 dxc6 9.Ne4 b6 10.Nf6+ Kf8 11.Ne4 Bg4 12.d3 Ne6 13.Ned2 g5 14.h3 Bh5 15.Nf1 h6 16.Ng3 Bg6 17.h4 Qd5 18.hxg5 hxg5 19.Nxg5 Nxg5 20.Bxg5 Bxe5 21.Qd2 f6 22.Bf4 Bxf4 23.Qxf4 Kf7 24.Re3 e5 25.Qa4 a5 26.Rae1 b5 27.Qg4 Rag8 28.Qf3 Qxf3 29.Rxf3 Ke6 30.Rfe3 Rh4 31.Ne4 Bxe4 32.dxe4 Rd8 33.f3 Rh7 34.Kf2 Rd4 35.Rd3 c4 36.Rde3 c5 37.R3e2 Rhd7 38.Ke3 c3 39.b3 b4 40.g4 Rd1 41.Rxd1 Rxd1 42.Rf2 c4 43.bxc4 a4 44.c5 a3 45.g5 fxg5 46.Rg2 Ra1 47.Kd3 Rxa2 48.Rxg5 Rb2 49.Rg6+ Kd7 50.Ra6 a2 51.Kc4 b3 52.c6+ Kd6 53.c7+ Kxc7 54.Kxc3 Rb1 55.cxb3 a1=Q+ 56.Rxa1 Rxa1 57.Kc4 Kd6 58.b4 Rf1 59.b5 Rxf3 60.b6 Rf1 61.b7 Rb1 62.b8=Q+ Rxb8 63.Kd3 Kc5 64.Kd2 Kd4 65.Ke2 Kxe4 66.Kd2 Kd4 67.Kc2 e4 68.Kd2 Rb2+ 69.Kd1 Kd3 70.Ke1 e3 71.Kf1 Rh2 72.Kg1 Rf2 0-1
2021.10.17 Ey U18 2021
1505607 Kozlov, Denis (2206) FM Elgersma, Onno (2313) 1/2-1/2
1.d4 d5 2.Nf3 Nf6 3.c4 e6 4.g3 dxc4 5.Bg2 a6 6.O-O Nc6 7.Bg5 Be7 8.e3 Bd7 9.Qc1 b5 10.b3 cxb3 11.axb3 Rc8 12.Bxf6 Bxf6 13.Rxa6 Nb4 14.Ra7 c5 15.dxc5 Nd3 16.Qd2 Nxc5 17.Rd1 Bc6 18.Qxd8+ Bxd8 19.b4 Bb6 20.Ra2 Na4 21.Rc2 Ke7 22.Rdc1 Bb7 23.Rxc8 Rxc8 24.Rxc8 Bxc8 25.Bf1 Bd7 26.Nfd2 Bc6 27.Na3 Nc3 28.Ndb1 Nd5 29.Bxb5 1/2-1/2
2021.10.16 Ey U18 2021
1505573 Sismeiro, Miguel (2184) FM Elgersma, Onno (2313) 0-1
1.Nf3 d5 2.e3 Nf6 3.c4 e6 4.b3 c5 5.Bb2 Nc6 6.cxd5 exd5 7.Be2 Bd6 8.O-O O-O 9.d4 cxd4 10.Nxd4 Re8 11.Nd2 a6 12.Rc1 Ne5 13.N2f3 Ng6 14.Bd3 Ne4 15.Rc2 Bg4 16.Qa1 Qe7 17.h3 Bd7 18.Ne2 Ng5 19.Nxg5 Qxg5 20.f4 Qe7 21.Rf3 f6 22.Rg3 Kh8 23.Qd1 Nh4 24.Nd4 Qf7 25.Kf2 a5 26.a4 Rac8 27.Bb5 Bxb5 28.axb5 Rxc2+ 29.Qxc2 Qe7 30.Qd2 Bc5 31.Nc2 Nf5 32.Rf3 Qe4 33.Bd4 Bb4 34.Nxb4 axb4 35.Qxb4 Nh4 36.Rg3 Rc8 37.Kg1 Nf5 38.Rf3 h5 0-1
2021.10.16 Ey U18 2021
1505589 FM Elgersma, Onno (2313) FM Richter, Nils (2277) 1-0
1.e4 c6 2.d4 d5 3.exd5 cxd5 4.c4 Nf6 5.Nc3 Nc6 6.h3 e6 7.Nf3 Bb4 8.cxd5 Nxd5 9.Bd2 O-O 10.Bd3 b6 11.O-O Bb7 12.Re1 Rc8 13.Rc1 Nf6 14.Bg5 Ne7 15.a3 Bxc3 16.bxc3 Nf5 17.Bxf5 exf5 18.Ne5 h6 19.Bxf6 Qxf6 20.Qh5 Rc7 21.c4 Rd8 22.Rcd1 Ba6 23.Qe2 Rdc8 24.Rc1 Qd6 25.Qd3 f6 26.Ng6 Bxc4 27.Rxc4 Rxc4 28.Ne7+ Kf8 29.Nxc8 Rxc8 30.d5 Rd8 31.Rd1 f4 32.a4 Qb4 33.Qc2 Qd6 34.Qc4 Kg8 35.h4 Kh8 36.Qd3 Qb4 37.d6 Qxa4 38.d7 Qc6 39.Qe2 a5 40.Qe7 Qc7 41.h5 a4 42.Qe8+ Kh7 43.Qe4+ Kh8 44.Qxa4 Qe5 45.Qc6 b5 46.Qb6 Qe7 47.Qxb5 Kh7 48.Qa5 Kh8 49.Qc7 Kh7 50.Qxf4 Qe2 51.Qf5+ Kh8 52.Rc1 Kg8 53.Rc8 Qe7 54.Rxd8+ Qxd8 55.Qe6+ Kf8 56.Qd6+ Kg8 57.Kh2 Kf7 58.Kh3 f5 59.f4 Kg8 60.Qe6+ Kf8 61.Qxf5+ Ke7 62.Qe5+ Kf7 63.Qd6 Kg8 64.Qe6+ Kf8 65.Kg4 g6 66.hxg6 h5+ 67.Kxh5 Qa5+ 68.Qe5 Qxe5+ 69.fxe5 Kg7 70.e6 1-0
2021.10.15 Ey U18 2021
1505559 FM Elgersma, Onno (2313) Mai, Alexander Oliver (2049) 1-0
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.d3 b5 6.Bb3 Bc5 7.Nc3 h6 8.O-O d6 9.a4 Rb8 10.axb5 axb5 11.Nd5 Nxd5 12.Bxd5 Ne7 13.Bb3 O-O 14.c3 Ng6 15.d4 Bb6 16.h3 Qf6 17.Be3 Bb7 18.Qd3 Nf4 19.Bxf4 Qxf4 20.Rfe1 Rfe8 21.g3 Qf6 22.Bd5 c6 23.Ba2 Bc8 24.Kg2 Qe7 25.d5 Qd7 26.Rh1 c5 27.c4 bxc4 28.Bxc4 Bd8 29.b3 f5 30.Ba6 fxe4 31.Qxe4 Qf5 32.Nd2 Bd7 33.g4 Qf4 34.Rhd1 Rf8 35.Qxf4 Rxf4 36.Bc4 Bg5 37.f3 Rbf8 38.Rf1 Rd8 39.Ne4 Be8 40.Ra6 Be7 41.Rfa1 Bf8 42.Rb6 Bg6 43.Nxc5 dxc5 44.Rxg6 Rd6 45.Re6 Rxe6 46.dxe6 Kh7 47.Ra7 Bd6 48.e7 1-0
2021.10.03 Dutch League 2021-22
1497783 IM Van der Stricht, G (2369) FM Elgersma, Onno (2263) 1-0
1.d4 d5 2.c4 e6 3.Nf3 Nf6 4.g3 Be7 5.Bg2 O-O 6.O-O dxc4 7.Qc2 a6 8.a4 Bd7 9.Qxc4 Bc6 10.Bf4 Bd6 11.Bg5 a5 12.Nc3 Be7 13.Rfd1 Na6 14.Bxf6 Bxf6 15.e4 Nb4 16.Rac1 b6 17.Qb3 Re8 18.Nb5 Qd7 19.Qc4 Rac8 20.Ne1 Bxb5 21.Qxb5 Red8 22.e5 Be7 23.Bb7 Rb8 24.Bc6 Nxc6 25.Rxc6 Rb7 26.Nc2 Qd5 27.Qxd5 exd5 28.Ne3 b5 29.axb5 Rd7 30.Rdc1 Kf8 31.Kg2 g6 32.R1c2 Bb4 33.Ng4 Be7 34.Nf6 Bxf6 35.exf6 Rxb5 36.Rxc7 Rxc7 37.Rxc7 Ke8 38.Re7+ Kf8 39.Ra7 Ke8 40.g4 h6 41.Re7+ Kf8 42.h4 Rxb2 43.Ra7 Ke8 44.g5 hxg5 45.hxg5 Re2 46.Rxa5 Kd7 47.Kf3 Re1 48.Rxd5+ Ke6 49.Ra5 Rd1 50.Re5+ Kd6 51.Re4 Kd5 52.Re7 Rxd4 53.Rxf7 Ke5 54.Ra7 Rd3+ 55.Kg4 Rd4+ 56.Kg3 Ke6 57.Ra6+ Kf7 58.Ra5 Ke6 59.f4 Rd1 60.Re5+ Kf7 61.Re7+ Kf8 62.Rg7 1-0
2021.09.18 Dutch League 2021-22
1497732 FM Elgersma, Onno (2263) IM Vandenbussche, T (2401) 1/2-1/2
1.d4 d5 2.Nf3 c5 3.e3 Nf6 4.c4 e6 5.Nc3 Nc6 6.Bd3 dxc4 7.Bxc4 a6 8.a4 Be7 9.O-O O-O 10.h3 Qc7 11.Qe2 Bd7 12.Rd1 Rac8 13.d5 exd5 14.Bxd5 Nb4 15.e4 c4 16.Bg5 Nfxd5 17.Nxd5 Nxd5 18.exd5 Bd6 19.Qc2 Rfe8 20.Bd2 h6 21.Bc3 b5 22.axb5 axb5 23.Qd2 Re4 24.Re1 Rce8 25.Rxe4 Rxe4 26.Ra8+ Re8 27.Rxe8+ Bxe8 28.Bb4 Bd7 29.Qe1 Kh7 30.Bxd6 Qxd6 31.Qe5 Qg6 32.Kh2 Qd3 33.d6 b4 34.Qd4 Qxd4 35.Nxd4 g5 36.Kg3 Kg6 37.f4 Kf6 38.Kf3 c3 39.bxc3 bxc3 40.Ke3 gxf4+ 41.Kxf4 Ba4 42.Ke3 Ke5 43.Kd3 c2 44.Nxc2 Kxd6 1/2-1/2
2021.08.17 Titled Tuesday 17th Aug
1583628 GM Alekseenko, K (2703) FM Elgersma, Onno (2292) 1-0
1.d4 d5 2.Nc3 c6 3.Bf4 Nf6 4.e3 Bf5 5.f3 e6 6.g4 Bg6 7.h4 h5 8.g5 Nfd7 9.Bd3 Bxd3 10.Qxd3 g6 11.O-O-O Bg7 12.Nge2 O-O 13.Bd6 Re8 14.f4 c5 15.dxc5 Na6 16.c6 Ndc5 17.Bxc5 Nxc5 18.Qb5 Qb6 19.cxb7 Rab8 20.Qxb6 axb6 21.Nd4 Rxb7 22.Nce2 Ra8 23.a3 b5 24.c3 Ne4 25.Rhf1 Rc8 26.Kb1 Nd6 27.Nc2 Nf5 28.Rh1 Rbc7 29.Ned4 Ng3 30.Rh2 Ne4 31.Nb4 Rb7 32.Nb3 Bf8 33.Nd3 Rbc7 34.Rc1 Rb7 35.Nd2 Nd6 36.Nf3 Nf5 37.Re2 Ng3 38.Ree1 Ne4 39.Ka2 Bd6 40.Rc2 Ra8 41.Nf2 Ng3 42.Nd4 Bf8 43.Rg1 Nf5 44.Nxf5 gxf5 45.Nd3 Bd6 46.Nc1 Kg7 47.Kb1 Rc8 48.Ne2 Rc4 49.Nd4 Bc5 50.Rd2 Bxd4 51.Rxd4 Rc6 52.Kc2 Kf8 53.Ra1 Ra7 54.Rb4 Rc5 55.a4 bxa4 56.Rbxa4 Rxa4 57.Rxa4 Rc4 58.Rxc4 dxc4 59.b3 Ke7 60.bxc4 Kd6 61.Kb2 Kc6 62.Ka3 Kb6 63.Kb4 Kc6 64.c5 Kd5 65.Kb5 Ke4 66.c6 Kxe3 67.c7 1-0
2021.08.17 Titled Tuesday 17th Aug
1584061 CM Briscoe, C (2192) FM Elgersma, Onno (2292) 1/2-1/2
1.e4 c6 2.Nc3 d5 3.Nf3 dxe4 4.Nxe4 Nf6 5.Neg5 Bf5 6.Ne5 Bg6 7.Bc4 e6 8.Qe2 Nd5 9.d4 Nd7 10.Nxg6 hxg6 11.Bd2 Be7 12.Ne4 a5 13.O-O-O a4 14.Rhe1 b5 15.Bxd5 cxd5 16.Ng3 b4 17.Kb1 Qb6 18.Bf4 a3 19.b3 Qa6 20.Qf3 Nb6 21.Nf1 Nc8 22.Ne3 Qb7 23.c4 bxc3 24.Rc1 Na7 25.Rxc3 Nb5 26.Rd3 Bb4 27.Nxd5 Ra7 28.Nxb4 Nc3+ 29.Rxc3 Qxb4 30.Rc8+ Ke7 31.Rec1 Rxc8 32.Rxc8 Qxd4 33.Qc3 Qxf4 34.Qc5+ Kf6 35.Qxa7 Qe4+ 36.Rc2 Qe1+ 37.Rc1 Qe4+ 38.Rc2 Qe1+ 39.Rc1 Qe4+ 40.Rc2 1/2-1/2
2021.08.17 Titled Tuesday 17th Aug
1583832 FM Elgersma, Onno (2292) CM Singh, Ojasva (2278) 0-1
1.d4 d5 2.Nf3 Nf6 3.c4 c6 4.e3 e6 5.Bd3 Nbd7 6.O-O Bd6 7.Nbd2 O-O 8.e4 dxe4 9.Nxe4 Nxe4 10.Bxe4 c5 11.dxc5 Bxc5 12.b4 Bxb4 13.Bb2 Be7 14.Qc2 h6 15.Rfd1 Qc7 16.Nd4 a6 17.Bh7+ Kh8 18.a4 Bf6 19.a5 Ne5 20.Ba3 Rd8 21.c5 g6 22.Bxg6 Nxg6 23.Nf3 Bxa1 24.Rxa1 e5 25.Bb2 Bg4 26.Qc1 Bxf3 27.Qxh6+ Kg8 28.gxf3 Qxc5 29.Rc1 Qf8 30.Qg5 Rac8 31.Re1 Kh7 32.Qh5+ Qh6 33.Qf5 Rc7 34.Re4 Re7 0-1
2021.08.12 36th Geraardsbergen Open
1591119 FM Elgersma, Onno (2292) Rogge, Parcival (1964) 1-0
1.d4 Nf6 2.Nf3 e6 3.e3 d5 4.c4 c6 5.Bd3 a6 6.cxd5 cxd5 7.O-O Bd6 8.Nc3 Nbd7 9.e4 dxe4 10.Nxe4 Nxe4 11.Bxe4 Nf6 12.Bc2 h6 13.Ne5 O-O 14.Re1 Bd7 15.Qf3 Rc8 16.Bd3 Qa5 17.Bxh6 Rfd8 18.Qf4 Be8 19.Bxg7 Nh5 20.Bh7+ Kxg7 21.Qg5+ Kf8 22.Nd7+ Bxd7 23.Qxa5 Nf6 24.Be4 Ke7 25.Bxb7 Rc2 26.Bf3 Rxb2 27.Rab1 1-0
2021.08.11 36th Geraardsbergen Open
1591088 Lahaye, R (2397) FM Elgersma, Onno (2292) 1/2-1/2
1.Nf3 d5 2.g3 Nf6 3.Bg2 e6 4.O-O Be7 5.d3 O-O 6.Nbd2 c5 7.e4 Nc6 8.Re1 Qc7 9.Nf1 dxe4 10.dxe4 Rd8 11.Qe2 e5 12.c3 h6 13.Nh4 Bg4 14.Qc2 Be6 15.Ne3 c4 16.Nhf5 b5 17.Nd5 Nxd5 18.exd5 Bxd5 19.Bxd5 Rxd5 20.Qe4 Qd7 21.Qg4 g6 22.Nxh6+ Kg7 23.Qxd7 Rxd7 24.Ng4 f6 25.Kg2 Rb8 26.f4 e4 27.Rxe4 f5 28.Re6 fxg4 29.Rxc6 Bf6 30.Be3 b4 31.Rxc4 bxc3 32.bxc3 Rb2+ 33.Kh1 Rd3 34.Bxa7 Rdd2 35.Bg1 Rxa2 36.Rc7+ Kg8 37.Rxa2 Rxa2 38.Bd4 Bxd4 39.cxd4 Rd2 40.Rc5 Kf7 41.Rg5 Kf6 42.Rxg4 Kf5 43.Rg5+ Ke4 44.Re5+ Kf3 45.Re1 Kg4 46.Re3 Rxd4 47.Kg1 Rd2 48.Ra3 Rb2 49.Re3 Ra2 50.Re1 Rb2 51.Rd1 Ra2 52.Re1 Rb2 53.Re3 Ra2 54.h4 Rb2 55.Kf1 Ra2 56.Re2 Ra3 57.Re6 Kxg3 58.Rxg6+ Kxf4 59.Kg2 Ke5 1/2-1/2
2021.08.11 36th Geraardsbergen Open
1591104 FM Elgersma, Onno (2292) IM Van der Stricht, G (2380) 1/2-1/2
1.e4 c5 2.Nf3 d6 3.Bb5+ Bd7 4.a4 Nf6 5.Nc3 Nc6 6.O-O e6 7.Re1 Be7 8.d3 O-O 9.Bxc6 Bxc6 10.e5 Nd7 11.exd6 Bxd6 12.Ne4 Bc7 13.Ng3 Qf6 14.Ne4 Qe7 15.c3 Ne5 16.Nxe5 Bxe5 17.Qh5 f6 18.f4 Bc7 19.a5 b6 20.axb6 axb6 21.Rxa8 Rxa8 22.f5 exf5 23.Qxf5 Qe5 24.Qxe5 Bxe5 25.Nd2 Kf7 26.Nc4 Bc7 27.Ne3 Rd8 28.Rd1 Ba4 29.Rd2 Bb3 30.d4 Bf4 31.Kf2 Re8 32.Re2 cxd4 33.cxd4 Rd8 34.g3 Bh6 35.Bd2 g6 36.Bc3 Re8 37.Ng4 Rxe2+ 38.Kxe2 Bc4+ 39.Kd1 Bb3+ 40.Ke2 Bc4+ 41.Kf2 Bc1 42.d5 Bxd5 43.Nxf6 Bc6 44.Nxh7 Bh6 45.Nf6 Bf8 46.Ng4 Bc5+ 47.Ke2 Bb5+ 48.Kd2 Ke6 49.Ne5 Be8 50.Nf3 Kd5 51.Ng5 Be7 52.Nh3 Ke4 53.Nf4 Bg5 54.Ke2 Bxf4 55.gxf4 Kxf4 56.Bd4 b5 57.Kf2 1/2-1/2
2021.08.10 36th Geraardsbergen Open
1591079 FM Elgersma, Onno (2292) FM Becx, C (2157) 1-0
1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.c4 Nb6 5.exd6 exd6 6.Nc3 Nc6 7.Be3 Bf5 8.Be2 Be7 9.Nf3 O-O 10.O-O Nb4 11.Rc1 c6 12.Qb3 Na6 13.Rfd1 Qc7 14.Bf4 Qd7 15.c5 Be6 16.Qa3 dxc5 17.Ne5 Qe8 18.Bxa6 cxd4 19.Qa5 dxc3 20.Bxb7 cxb2 21.Rb1 Nd5 22.Bxc6 Qd8 23.Rxd5 Bxd5 24.Qxd5 Qb6 1-0
2021.08.10 36th Geraardsbergen Open
1591083 FM Sterck, Arno (2250) FM Elgersma, Onno (2292) 0-1
1.Nf3 d5 2.e3 Nf6 3.c4 e6 4.b3 c5 5.Bb2 Nc6 6.cxd5 exd5 7.Be2 Bd6 8.O-O O-O 9.d4 cxd4 10.Nxd4 Re8 11.Bf3 Ne5 12.Be2 a6 13.Nc3 Bd7 14.Nf3 Bc6 15.Nd4 Bd7 16.Nf3 Be6 17.Rc1 b5 18.Nd4 Bc8 19.Qc2 Bd7 20.Rfd1 Rc8 21.Qb1 b4 22.Na4 Ne4 23.f3 Qh4 24.fxe4 Ng4 25.Bxg4 Qxh2+ 26.Kf1 Bg3 27.Nf3 Bb5+ 28.Rd3 Rxc1+ 29.Bxc1 Qh1+ 30.Ng1 dxe4 31.Nc5 exd3 32.Bd2 Bh2 33.Kf2 Bxg1+ 34.Qxg1 Qh4+ 35.Kf3 Qf6+ 0-1
2021.08.09 36th Geraardsbergen Open
1591075 Krijgelmans, J (2094) FM Elgersma, Onno (2292) 0-1
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.cxd5 exd5 5.Bg5 c6 6.e3 Bd6 7.Qc2 O-O 8.Bd3 h6 9.Bh4 Re8 10.Nge2 a5 11.h3 Na6 12.a3 Nc7 13.g4 Ne6 14.O-O Ng5 15.Kg2 Bc7 16.Ng1 Qd6 17.Bg3 Qe7 18.Bh4 b5 19.Rac1 Bd6 20.Nce2 Bd7 21.f4 Nge4 22.Bxe4 Qxe4+ 23.Rf3 Qxc2 24.Rxc2 Ne4 25.Rf1 b4 26.axb4 axb4 27.Nc1 c5 28.dxc5 Nxc5 29.Nf3 Bb5 30.Re1 b3 31.Rd2 Bc4 32.Nd4 Ra1 33.Rdd1 Rb1 34.Nf5 Rxb2+ 35.Kf3 Bf8 36.g5 hxg5 37.Bxg5 Ne4 38.Rg1 Rf2+ 39.Kg4 b2 40.Nd3 Bxd3 41.Rxd3 Rg2+ 0-1
2021.08.08 36th Geraardsbergen Open
1591055 FM Elgersma, Onno (2292) Lambert, Michel (1759) 1-0
1.d4 c5 2.e3 g6 3.Nf3 Bg7 4.Be2 Nf6 5.O-O cxd4 6.exd4 d5 7.Bf4 O-O 8.Nbd2 Nc6 9.c3 e6 10.Qb3 b6 11.a4 Bb7 12.a5 Nd7 13.a6 Bc8 14.Bb5 Ndb8 15.Qa4 Bd7 16.Rfe1 Na5 17.Bxb8 Bxb5 18.Qxb5 Rxb8 19.b4 Nc4 20.Nxc4 dxc4 21.Qxc4 Rc8 22.Qb3 b5 23.Ne5 Qd6 24.Nd3 Rc4 25.h3 Rfc8 26.Nc5 Qd5 27.Qb2 h6 28.Rad1 Kh7 29.Qd2 Rd8 30.Qe3 Kg8 31.Qg3 Rc8 32.Kh1 Kf8 33.Ne4 R4c6 34.Nc5 Kg8 35.Qd3 Rd6 36.Qxb5 1-0
2021.08.08 36th Geraardsbergen Open
1591061 Legemaat, Gerrit (1934) FM Elgersma, Onno (2292) 1/2-1/2
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.cxd5 exd5 5.Bg5 c6 6.e3 Bd6 7.Bd3 O-O 8.Qc2 h6 9.Bh4 Re8 10.Nge2 a5 11.h3 Na6 12.a3 Nc7 13.O-O Ne6 14.Rad1 Ng5 15.Bf5 Nfe4 16.Bxg5 Nxg5 17.f4 Bxf5 18.Qxf5 Ne4 19.Nxe4 Rxe4 20.Rd3 Qb6 21.Nc3 Ree8 22.Nd1 Qb5 23.Rc3 a4 24.Qd3 Qb6 25.Kh1 Re7 26.Rc2 Rae8 27.Rf3 Re4 28.Nc3 Qb3 29.Rd2 R4e7 30.Nd1 Qb6 31.Nc3 Qa5 32.Rc2 Bb8 33.g4 Ba7 34.Rg2 b5 35.g5 h5 36.g6 b4 37.gxf7+ Rxf7 38.axb4 Qxb4 39.Rfg3 a3 40.bxa3 Qxa3 41.Rg1 c5 42.dxc5 Bxc5 43.Qxd5 Bf8 44.Ne4 Qa8 45.Nf6+ Kh8 46.Qxa8 Rxa8 47.Nxh5 Re8 48.Rf3 Bc5 49.Re1 Rfe7 50.Ng3 Rxe3 51.Rfxe3 Rxe3 52.Rxe3 Bxe3 53.f5 Kh7 54.Kg2 g6 55.fxg6+ 1/2-1/2
2021.08.07 ch-NED Jeugd A 2021
1596434 Van Foreest, Machteld (2161) FM Elgersma, Onno (2292) 0-1
1.e4 c6 2.d4 d5 3.Nd2 dxe4 4.Nxe4 Nf6 5.Nxf6+ exf6 6.Nf3 Bd6 7.Bd3 O-O 8.O-O Bg4 9.h3 Bh5 10.c3 Na6 11.Bc2 Nc7 12.Qd3 Bg6 13.Qd1 Qd7 14.Bxg6 hxg6 15.Qd3 g5 16.Nd2 Rfe8 17.Ne4 Qf5 18.Nc5 Qxd3 19.Nxd3 Ne6 20.f4 gxf4 21.Nxf4 Bxf4 22.Bxf4 Kh7 23.Bd2 Rad8 24.Rf5 Kg6 25.Raf1 Rd5 26.g4 Red8 27.Be3 Kh7 28.Kg2 Nc7 29.Bg1 Re8 30.Bh2 Rxf5 31.Rxf5 Nd5 32.Rf2 b5 33.Bd6 Re3 34.Bc5 a6 35.a4 Rd3 36.axb5 axb5 37.Kh2 g5 38.Bd6 Kg6 39.Bg3 Ne3 40.Bc7 f5 41.gxf5+ Nxf5 42.Bd8 c5 43.Bb6 cxd4 44.cxd4 Nxd4 45.Bxd4 Rxd4 46.b3 Rd3 47.Rb2 b4 48.Kg2 f5 49.Kh2 f4 50.Kg2 Kh5 51.Kh2 Kh4 0-1
2021.08.06 ch-NED Jeugd A 2021
1596426 Maters, Arthur (2032) FM Elgersma, Onno (2292) 0-1
1.e4 c6 2.d4 d5 3.f3 Nf6 4.Nc3 e6 5.Be3 b6 6.Qd2 Be7 7.O-O-O O-O 8.h4 b5 9.e5 Nfd7 10.g4 b4 11.Nb1 c5 12.f4 cxd4 13.Bxd4 Nc6 14.Nf3 Nxd4 15.Qxd4 Nc5 16.Bd3 Qb6 17.Ng5 g6 18.Nd2 Na4 19.Nb3 h6 20.Nf3 Nc5 21.Nbd2 Bd7 22.h5 Nxd3+ 23.Qxd3 Bb5 24.c4 dxc4 25.Qc2 b3 26.axb3 cxb3 27.Qxb3 Be2 28.Rdf1 Qa6 29.Ne4 Bxf1 30.hxg6 Qc6+ 31.Nc3 Qxf3 32.Rxh6 Qxf4+ 0-1
2021.08.05 ch-NED Jeugd A 2021
1596413 FM Elgersma, Onno (2292) FM Hilwerda, Jonas (2240) 0-1
1.e4 c5 2.Nf3 Nc6 3.Bb5 g6 4.O-O Bg7 5.Re1 e5 6.Bxc6 dxc6 7.d3 Qe7 8.a3 a5 9.Be3 Nf6 10.h3 O-O 11.Nbd2 Nd7 12.h4 h6 13.Nc4 b5 14.Ncd2 f5 15.exf5 gxf5 16.Bf4 Re8 17.a4 Qf7 18.Bh2 c4 19.Rb1 cxd3 20.cxd3 Qd5 21.Nf1 Bb7 22.Ne3 Qf7 23.Rc1 Rac8 24.axb5 cxb5 25.Rxc8 Rxc8 26.d4 f4 27.Ng4 exd4 28.Nfe5 Nxe5 29.Nxe5 Bxe5 30.Rxe5 Qg7 31.Qb3+ Kh8 0-1
2021.08.04 ch-NED Jeugd A 2021
1596404 FM Elgersma, Onno (2292) Shakhverdian, William (2074) 1-0
1.c4 e6 2.Nc3 d5 3.d4 a6 4.c5 e5 5.e3 Nc6 6.Nf3 e4 7.Nd2 f5 8.Qb3 Nf6 9.Be2 g6 10.O-O Bh6 11.Kh1 O-O 12.f4 g5 13.fxg5 Bxg5 14.Nd1 Kh8 15.Nf2 Ne7 16.Nh3 Bh6 17.Nb1 Ng6 18.Nc3 c6 19.Bd2 Ng4 20.Bxg4 fxg4 21.Nf4 Bxf4 22.exf4 Nh4 23.Ne2 Nf5 24.Ng3 Qe7 25.Nxf5 Bxf5 26.Qe3 Rg8 27.Be1 h6 28.Rc1 Raf8 29.Rc3 Rf7 30.Rb3 h5 31.Qg3 Rh7 32.Qh4 Qxh4 33.Bxh4 Rf7 34.Re3 Rgf8 35.Kg1 Bc8 36.g3 Kh7 37.Kf2 Kg6 38.Rb3 Kf5 39.Ke3 Be6 40.Rb6 Rd7 41.Rc1 Rh7 42.Rc3 Rc7 43.Ra3 Bc8 44.Ra5 Ke6 45.Bg5 Kf5 46.b4 Kg6 47.b5 Kf5 48.bxc6 bxc6 49.Ra3 Bb7 50.Rab3 Rff7 51.Rb1 Rh7 52.Rh1 Rcd7 53.Rb2 Kg6 54.h3 Rdf7 55.hxg4 hxg4 56.Rbh2 Rxh2 57.Rxh2 Rh7 58.f5+ Kg7 59.Rxh7+ Kxh7 60.Kf4 1-0
2021.08.03 ch-NED Jeugd A 2021
1596393 CM Bruil, Rembrandt (2105) FM Elgersma, Onno (2292) 1-0
1.d4 Nf6 2.c4 e6 3.Nf3 d5 4.Nc3 c5 5.cxd5 exd5 6.g3 Nc6 7.Bg2 cxd4 8.Nxd4 Bc5 9.Nxc6 bxc6 10.O-O O-O 11.Na4 Bb6 12.Qc2 Bd7 13.Nc5 Bg4 14.Re1 Re8 15.b4 a5 16.Nb7 Qc7 17.Nxa5 Bxa5 18.bxa5 Qxa5 19.Bb2 Qa4 20.Qd2 Re6 21.Rab1 Bf5 22.Rbc1 Rae8 23.a3 h6 24.e3 Ne4 25.Bxe4 Bxe4 26.Qd4 Qxd4 27.Bxd4 Ra8 28.Bc5 Ra4 29.Rc3 Re8 30.Bb4 Rc8 31.Rec1 Ra6 32.Kf1 Bf3 33.Ke1 f6 34.Bc5 Ra4 35.Bb4 Ra6 36.Bc5 Re8 37.Rb1 Kh7 38.Bd4 Kg6 39.Rb6 Ra4 40.Kd2 Rea8 41.Bc5 Rc4 42.Rxc4 dxc4 43.Kc3 Bd5 44.Rb7 Ra5 45.Bb4 Rb5 46.Rc7 Kf5 47.a4 Rb8 48.a5 Ra8 49.Rxg7 Ke4 50.Rg4+ Ke5 51.Rd4 f5 52.Rh4 h5 53.Rxh5 c5 54.Bxc5 Rxa5 55.Bd4+ Ke4 56.f3+ Kxf3 57.Rxf5+ Ke2 58.Kb4 1-0
2021.08.02 ch-NED Jeugd A 2021
1596383 FM Elgersma, Onno (2292) Honkoop, Gilian (2157) 1-0
1.d4 d5 2.Nf3 e6 3.c4 Nf6 4.e3 Be7 5.Nc3 O-O 6.Bd2 b6 7.cxd5 exd5 8.Bd3 c5 9.O-O Bb7 10.Ne5 Nbd7 11.Rc1 Re8 12.f4 a6 13.Qf3 b5 14.Qh3 b4 15.Nxd7 Qxd7 16.Bxh7+ Kf8 17.Bf5 Qd6 18.dxc5 Qxc5 19.Ne4 Qb6 20.Qh8+ Ng8 21.Bh7 Bd8 22.Qxg8+ Ke7 23.Qxg7 dxe4 24.Be1 Kd6 25.Qxf7 Re7 26.Bxb4+ 1-0
2021.08.01 ch-NED Jeugd A 2021
1596373 Arabi, Osama FM Elgersma, Onno (2292) 0-1
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.cxd5 exd5 5.Bg5 c6 6.Qc2 Bd6 7.Nf3 O-O 8.e3 Be6 9.Bd3 h6 10.Bf4 Qc7 11.Bxd6 Qxd6 12.O-O Nbd7 13.Rab1 a5 14.a3 Rfe8 15.Rfc1 Rac8 16.b4 axb4 17.axb4 b5 18.Nd2 Nb6 19.Nb3 Nc4 20.Ra1 Ra8 21.Nc5 Ng4 22.g3 Nf6 23.Ne2 Bg4 24.Nf4 Bf3 25.Ng2 h5 26.Nh4 Bg4 27.Nf5 Bxf5 28.Bxf5 g6 29.Bd3 Kg7 30.Rxa8 Rxa8 31.e4 dxe4 32.Bxc4 bxc4 33.Qxc4 h4 34.Nb7 Qd7 35.Na5 hxg3 36.fxg3 Rh8 37.Nxc6 Ng4 38.Qc5 Qe6 39.d5 Qf6 40.h4 e3 41.Qc3 Qxc3 42.Rxc3 Ra8 43.Kf1 Ra2 44.Ke1 Ra1+ 45.Ke2 Ra2+ 46.Kf3 f5 47.Kf4 Rf2+ 48.Kg5 Nf6 49.Rxe3 Nh7# 0-1
2021.07.27 Titled Tuesday 27th July
1603606 WIM Gaboyan, S (2215) FM Elgersma, Onno (2298) 0-1
1.Nf3 d5 2.g3 Nf6 3.Bg2 e6 4.O-O Be7 5.d4 O-O 6.c4 dxc4 7.Nc3 a6 8.Ne5 Nc6 9.Nxc6 bxc6 10.Bxc6 Rb8 11.e3 Bb7 12.Qf3 Qc8 13.Na4 Nd5 14.Bxb7 Qxb7 15.e4 Nf6 16.Nc3 Bb4 17.Rd1 Bxc3 18.bxc3 Qxe4 19.Qxe4 Nxe4 20.Bd2 Rb2 21.Be1 Nf6 22.Rdb1 Rfb8 23.Rxb2 Rxb2 24.a4 a5 25.Rd1 Nd5 26.Rc1 Kf8 27.Ra1 Ke8 28.Kf1 Kd8 29.h4 Kc8 30.Rd1 Ra2 31.Rb1 Rxa4 32.Rb5 Ra1 33.Ke2 a4 34.Rc5 a3 35.Rxc4 Nb6 36.Rc5 Rb1 37.Ra5 Nc4 38.Ra4 Kd7 39.Rxc4 a2 40.Ra4 a1=Q 41.Rxa1 Rxa1 42.Bd2 Ra2 43.Kd3 c6 44.Be3 f6 45.c4 e5 46.dxe5 fxe5 47.Ke4 Ke6 48.Kf3 Ra4 49.c5 Kd5 50.Ke2 Ke4 51.Kd2 Ra2+ 52.Kc3 Kd5 53.Kd3 e4+ 54.Kc3 h6 55.Bd4 g5 56.Be3 gxh4 57.gxh4 h5 58.Kb3 Ra1 59.Bg5 Rg1 60.Be7 Rg2 61.Kc3 Rxf2 62.Bg5 Rf3+ 63.Kd2 Kxc5 64.Ke2 Kd5 65.Be7 c5 66.Bg5 c4 67.Kd2 c3+ 68.Kc2 Kc4 69.Kc1 Rf2 0-1
2021.07.27 Titled Tuesday 27th July
1603123 FM Elgersma, Onno (2298) GM Tristan, L (2535) 0-1
1.d4 d5 2.Nf3 Nf6 3.g3 Bf5 4.Bg2 e6 5.O-O Be7 6.c4 c6 7.Nfd2 O-O 8.Nc3 Nbd7 9.e4 dxe4 10.Ndxe4 Nxe4 11.Nxe4 Nf6 12.Nc3 Qb6 13.Na4 Qa6 14.Qb3 Rfd8 15.Be3 Ng4 16.Rac1 Bg6 17.Rfd1 Nxe3 18.fxe3 Rac8 19.c5 Bg5 20.Re1 Qa5 21.Qa3 Qc7 22.b4 h5 23.Qc3 h4 24.gxh4 Bxh4 25.Rf1 Bf6 26.Nb2 e5 27.Rcd1 exd4 28.exd4 b5 29.a4 a6 30.Rd2 Bg5 31.Rdf2 Re8 32.d5 cxd5 33.Bxd5 Be3 34.axb5 axb5 35.Nd3 Qd8 36.Nf4 Bxf4 37.Bxf7+ Bxf7 38.Rxf4 Qg5+ 39.Qg3 Qxg3+ 40.hxg3 Bc4 41.Ra1 Re3 42.Kf2 Rb3 43.Ra7 Rxb4 44.Rd4 Rf8+ 45.Kg2 Rb2+ 46.Kh3 Be6+ 47.Kh4 Rh2+ 48.Kg5 Rf5+ 49.Kg6 Rh6# 0-1
2021.07.27 Titled Tuesday 27th July
1603678 FM Elgersma, Onno (2298) Dejmek, M (2018) 1/2-1/2
1.d4 Nf6 2.Nf3 c5 3.e3 g6 4.c4 Bg7 5.Nc3 O-O 6.dxc5 Na6 7.Be2 Nxc5 8.O-O d6 9.Nd4 Bd7 10.b3 Rb8 11.Bb2 a6 12.a4 a5 13.Ndb5 Bc6 14.Qc2 Nfe4 15.Rad1 Nxc3 16.Bxc3 Bxc3 17.Qxc3 b6 18.Nd4 Ba8 19.Nb5 Qc8 20.Rd4 Qf5 21.Rf4 Qg5 22.Rg4 Qe5 23.Nd4 f5 24.Rh4 Qf6 25.Rh3 Ne4 26.Qc2 Ng5 27.Rg3 Ne4 28.Rf3 Ng5 29.Rg3 Ne4 30.Rh3 Ng5 31.Rg3 1/2-1/2
2021.07.27 Titled Tuesday 27th July
1603943 FM Elgersma, Onno (2298) Quirke, J (2120) 1-0
1.e4 c6 2.Nc3 d5 3.Nf3 Bg4 4.h3 Bh5 5.g4 Bg6 6.exd5 cxd5 7.Ne5 Nc6 8.Bb5 Rc8 9.Qf3 e6 10.O-O Ne7 11.d4 a6 12.Bxc6+ Nxc6 13.Nxc6 Rxc6 14.Bf4 Bd6 15.Rac1 O-O 16.Ne2 b5 17.c3 Be4 18.Qg3 Bxf4 19.Nxf4 Qc7 20.f3 Bg6 21.h4 h6 22.h5 Bh7 23.Rfe1 b4 24.Re3 Rc8 25.Qh2 a5 26.Qg3 a4 27.g5 hxg5 28.Qxg5 Qd8 29.Qg4 Kh8 30.a3 bxa3 31.bxa3 Rb8 32.Re2 Rb3 33.h6 gxh6 34.Rg2 Qf8 35.Qh4 f6 36.Nh5 e5 37.dxe5 fxe5 38.Re1 Rbxc3 39.Rxe5 Rc1+ 40.Kh2 Rg6 41.Rxg6 Bxg6 42.Nf4 Bh7 43.Re7 Qg8 44.Qf6+ 1-0
2021.07.27 Titled Tuesday 27th July
1603249 GM Yilmaz, M (2630) FM Elgersma, Onno (2298) 1-0
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.cxd5 exd5 5.Bg5 c6 6.e3 Bd6 7.Bd3 O-O 8.Qc2 h6 9.Bh4 Re8 10.Nf3 Be6 11.O-O Nbd7 12.Rab1 Rc8 13.b4 a6 14.a4 b5 15.a5 Qc7 16.Rfc1 Bg4 17.Bg3 Bxf3 18.gxf3 Nf8 19.Bf5 Ne6 20.Ne2 g6 21.Bh3 Nh7 22.Rb3 Nhg5 23.Bg2 Bxg3 24.hxg3 Qd6 25.Qb2 h5 26.Rbc3 Ng7 27.Nf4 Nf5 28.Qb3 h4 29.g4 Nxd4 30.Qd1 Nde6 31.Nxd5 Kg7 32.f4 h3 33.Bh1 h2+ 34.Kf1 cxd5 35.Rxc8 Rxc8 36.Rxc8 Qxb4 37.fxg5 Nxg5 38.Qd4+ 1-0
2021.07.27 Titled Tuesday 27th July
1604018 FM Samadov, Read (2332) FM Elgersma, Onno (2298) 1-0
1.d4 d5 2.c4 e6 3.Nf3 Nf6 4.Nc3 a6 5.cxd5 exd5 6.Bg5 Be6 7.Qb3 b5 8.Rc1 c6 9.e3 Bd6 10.a3 O-O 11.Be2 Nbd7 12.Na2 c5 13.dxc5 Nxc5 14.Qd1 d4 15.Nb4 dxe3 16.Bxe3 Nb3 17.Rc6 Bxb4+ 18.axb4 Qxd1+ 19.Bxd1 Rac8 20.Rxe6 fxe6 21.Bxb3 1-0
2021.07.27 Titled Tuesday 27th July
1602809 WFM Lohani, Sujana (1675) FM Elgersma, Onno (2298) 0-1
1.d4 d5 2.c4 e6 3.Nf3 Nf6 4.g3 Be7 5.Bg2 O-O 6.O-O dxc4 7.Qc2 a6 8.a4 Nbd7 9.Qxc4 b5 10.Qd3 Bb7 11.Bf4 c5 12.Rd1 c4 13.Qc2 Be4 14.Qc1 Qb6 15.Nc3 Bb7 16.a5 Qa7 17.Qc2 Rac8 18.e4 b4 19.Na4 Bxe4 20.Qd2 Qb7 21.Nh4 Rfd8 22.Qe1 Bd5 23.Rac1 Qb5 24.Bxd5 Nxd5 25.b3 Nxf4 26.Nb2 Bxh4 27.gxf4 cxb3 28.Rxc8 Rxc8 29.Qe3 Nf6 30.Qh3 Qh5 31.f5 Bxf2+ 0-1
2021.07.20 Titled Tuesday 20th July
1608206 FM Elgersma, Onno (2298) GM Iskusnyh, S (2473) 0-1
1.d4 d5 2.Nf3 Nf6 3.g3 c6 4.Bg2 Bf5 5.O-O e6 6.c4 Nbd7 7.Nfd2 Be7 8.Nc3 O-O 9.e4 dxe4 10.Ndxe4 Nxe4 11.Nxe4 Nf6 12.Nc3 Qb6 13.c5 Qa6 14.Qb3 Rfd8 15.Rd1 Bg4 16.Qb4 Bxd1 17.Bf1 b5 18.Bf4 Bf3 19.a4 Nd5 20.Nxd5 Bxd5 21.axb5 Qxa1 0-1
2021.07.20 Titled Tuesday 20th July
1607993 IM Tin, Jingyao (2482) FM Elgersma, Onno (2298) 1-0
1.d4 d5 2.c4 e6 3.Nf3 Nf6 4.Nc3 a6 5.cxd5 exd5 6.Bf4 Bd6 7.Bxd6 Qxd6 8.e3 O-O 9.Qc2 Nc6 10.Be2 Bg4 11.O-O Rfe8 12.Rac1 Ne4 13.Nxe4 dxe4 14.Ne1 Nb4 15.Qd2 Bxe2 16.Qxe2 Nxa2 17.Rc5 Nb4 18.Qc4 Nc6 19.Nc2 Rac8 20.Rc1 Na5 21.Rxa5 1-0
2021.07.20 Titled Tuesday 20th July
1607881 FM Elgersma, Onno (2298) IM Shahade, G (2476) 1-0
1.d4 Nf6 2.Nf3 g6 3.Bg5 Bg7 4.Nbd2 O-O 5.e3 d6 6.Be2 c5 7.c3 Nc6 8.O-O h6 9.Bh4 g5 10.Bg3 Nh5 11.a4 b6 12.Bc4 Nxg3 13.hxg3 d5 14.Bd3 Bg4 15.Qb1 a6 16.Bh7+ Kh8 17.Bf5 Bxf5 18.Qxf5 e6 19.Qd3 f5 20.Rab1 Qc7 21.b4 c4 22.Qc2 Ne7 23.b5 a5 24.Qa2 Nc8 25.Qa3 Nd6 26.Ne5 Bxe5 27.dxe5 Ne4 28.Nxe4 fxe4 29.Rbd1 Rf7 30.f4 exf3 31.Qd6 Qxd6 32.exd6 g4 33.gxf3 gxf3 34.Kf2 Rd8 35.Rh1 Kg7 36.Rh4 Rxd6 37.e4 Rfd7 38.e5 d4 39.exd6 dxc3 40.Rxc4 e5 41.Rc7 1-0
2021.07.20 Titled Tuesday 20th July
1607646 WFM Joubert, Dantelle (1566) FM Elgersma, Onno (2298) 0-1
1.c4 e6 2.e4 c5 3.Nc3 a6 4.g3 Nc6 5.Bg2 g6 6.Nge2 Bg7 7.O-O Nge7 8.d3 O-O 9.Rb1 d6 10.a3 a5 11.f4 f5 12.h3 Rb8 13.Kh2 b6 14.Be3 h6 15.d4 fxe4 16.Bxe4 d5 17.Bg2 Nf5 18.Bg1 cxd4 19.cxd5 dxc3 20.dxc6 Qxd1 21.Rbxd1 c2 22.Rc1 Ba6 23.Rxc2 Rbc8 24.Bxb6 a4 25.Nc3 Bxf1 26.Bxf1 Rxc6 27.Ba5 Ne3 28.Rf2 Rb8 29.Bd3 Bxc3 30.Bxc3 Nd1 31.Be5 Nxf2 32.Bxb8 Nxd3 33.Be5 Nxe5 34.fxe5 Rc2+ 0-1
2021.07.13 Titled Tuesday 13th July
1613074 WFM Novikova, Galina (2073) FM Elgersma, Onno (2298) 1-0
1.e4 c5 2.Nf3 e6 3.b4 d5 4.e5 d4 5.bxc5 Bxc5 6.Bd3 Nc6 7.c3 Nge7 8.O-O Ng6 9.Re1 Nf4 10.Be4 O-O 11.d3 Ng6 12.Ba3 Bxa3 13.Nxa3 dxc3 14.Nb5 a6 15.Nxc3 Ncxe5 16.Nxe5 Nxe5 17.Bxh7+ Kxh7 18.Rxe5 Qd4 19.Rh5+ Kg8 20.Ne4 f6 21.Rc1 Bd7 22.Qf3 Rac8 23.Re1 e5 24.Qg3 Be8 25.Rh4 Rc2 26.Nxf6+ Rxf6 27.Rxd4 Bc6 28.Rd8+ Kf7 29.Qxe5 Rfxf2 30.Qe6# 1-0
2021.07.13 Titled Tuesday 13th July
1613591 WIM Kanyamarala, Trisha (2180) FM Elgersma, Onno (2298) 0-1
1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 a6 5.Nc3 Qc7 6.Be3 Nf6 7.Be2 h5 8.O-O Ng4 9.Bxg4 hxg4 10.g3 Nc6 11.Qxg4 Ne5 12.Qe2 b5 13.a3 Bb7 14.Bf4 Bc5 15.Rad1 Rc8 16.Rfe1 f6 17.Kg2 g5 18.Be3 g4 19.Bf4 Rg8 20.Bxe5 fxe5 21.Nb3 Ba7 22.Qd2 Bc6 23.Qh6 Qd8 24.Qh5+ Kf8 25.Qxe5 Qe7 26.Qf4+ Qf7 27.Qxf7+ Kxf7 28.Ne2 Ke7 29.Ned4 Ba8 30.Kg1 Rcf8 31.Re2 Rh8 32.c3 Rh6 33.Nc1 Rfh8 34.f3 gxf3 35.Rf2 Bxe4 36.Nd3 Bxd3 37.Rxd3 e5 38.Nf5+ Kd8 39.Nxh6 Rxh6 40.Rxf3 e4 41.Rf8+ Ke7 42.Kg2 Bxf2 43.Rxf2 Ke6 44.Re2 Ke5 45.h4 d5 46.Kh3 d4 47.cxd4+ Kxd4 48.Kg4 Kd3 49.Re1 e3 50.Kg5 Rh8 51.h5 Rg8+ 52.Kf4 e2 53.Kf3 Rf8+ 0-1
2021.07.13 Titled Tuesday 13th July
1614363 FM Elgersma, Onno (2298) IM Horton, Andrew P (2375) 0-1
1.d4 Nf6 2.Nf3 c6 3.Bg5 d6 4.Bxf6 gxf6 5.e4 f5 6.exf5 Bxf5 7.Bd3 Nd7 8.b4 Bxd3 9.Qxd3 Qb6 10.Nbd2 Bg7 11.O-O O-O 12.Rfe1 Rfe8 13.Ng5 Nf8 14.Qf5 Qxd4 15.Qxf7+ Kh8 16.Ndf3 Qf6 17.Qb3 d5 18.Ne5 Kg8 19.Qg3 e6 20.Re3 Re7 21.Rae1 h6 22.Nh3 Qf5 23.Ng4 Kh8 24.Rf3 Qxc2 25.Qh4 Ng6 26.Qh5 Rf8 27.Nxh6 Rxf3 28.Ng4+ Kg8 29.gxf3 Qf5 30.Ng5 Nf8 31.Re5 Qg6 32.Qxg6 Nxg6 33.Rxe6 Rxe6 34.Nxe6 Kf7 35.Ng5+ Ke7 36.Ne3 Bf6 37.Nh3 Ke6 38.f4 Kf7 39.f5 Ne7 40.Nf4 Bg5 41.Ne6 Bxe3 42.fxe3 Kf6 43.Nd8 b6 44.Kf2 Kxf5 45.Kf3 c5 46.bxc5 bxc5 47.Nb7 c4 48.e4+ dxe4+ 49.Ke3 Ke5 50.Na5 Nd5+ 51.Kd2 c3+ 52.Kc2 e3 53.Kd3 Kf4 54.Nc4 Nb4+ 55.Kxc3 Nxa2+ 56.Kd3 Nb4+ 57.Ke2 Nd5 58.Nxe3 Nxe3 59.Kd3 Nd5 60.Kc4 Nc7 61.Kc5 Kg4 62.Kc6 Kh3 63.Kb7 a5 0-1
2021.07.13 Titled Tuesday 13th July
1614124 FM Voiteanu, G (2111) FM Elgersma, Onno (2298) 0-1
1.d4 d5 2.g3 Nf6 3.Bg2 e6 4.Nf3 Be7 5.O-O O-O 6.c4 dxc4 7.Qc2 a6 8.a4 Nbd7 9.Qxc4 b5 10.Qc2 Bb7 11.Rd1 Be4 12.Qd2 Nd5 13.Nc3 Nxc3 14.bxc3 bxa4 15.Rxa4 Nb6 16.Ra1 Nc4 17.Qf4 f5 18.Ng5 Bxg2 19.Kxg2 h6 20.Nf3 g5 21.Nxg5 hxg5 22.Qf3 g4 23.Qd3 Qd5+ 24.f3 a5 25.e4 gxf3+ 26.Qxf3 Qxe4 27.Qxe4 fxe4 28.Bh6 Rf3 29.Re1 Rxc3 30.Rxe4 Kf7 31.Rf1+ Bf6 32.Bg5 Rc2+ 33.Kg1 Rf8 34.Rxf6+ Kg7 35.Rxf8 Kxf8 36.Rxe6 a4 37.Be7+ Kf7 38.Re1 Nd2 39.Re3 Nc4 40.Re1 a3 41.Bc5 a2 42.d5 Nd2 43.Ra1 Nb3 44.Rf1+ Kg6 45.Ba3 0-1
2021.07.13 Titled Tuesday 13th July
1613874 FM De Silva, L M S T (2085) FM Elgersma, Onno (2298) 1-0
1.Nf3 d5 2.b3 Nf6 3.Bb2 c5 4.e3 Nc6 5.c4 e6 6.g3 d4 7.Bg2 Be7 8.O-O O-O 9.exd4 cxd4 10.Re1 Re8 11.d3 Bf8 12.Ne5 Nxe5 13.Rxe5 Bd6 14.Bxd4 Bxe5 15.Bxe5 Nd7 16.Bb2 e5 17.Nc3 Nf6 18.Qd2 e4 19.d4 Bf5 20.d5 Qd7 21.Nd1 Ng4 22.h3 Ne5 23.Bxe5 Rxe5 24.g4 Bg6 25.Ne3 h5 26.Qd4 f6 27.c5 hxg4 28.hxg4 Rf5 29.gxf5 1-0
2021.07.13 Titled Tuesday 13th July
1612851 FM Elgersma, Onno (2298) GM Nabaty, T (2638) 0-1
1.e4 e6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Nd7 5.Nf3 Ngf6 6.Nxf6+ Nxf6 7.c3 Be7 8.Bb5+ c6 9.Bd3 O-O 10.O-O b6 11.Re1 Bb7 12.a4 c5 13.a5 bxa5 14.Bf4 Nd5 15.Bg3 Rc8 16.Ne5 cxd4 17.cxd4 Nb4 18.Bb1 f5 19.Bf4 Bf6 20.Qb3 Re8 21.Qg3 Qd5 22.h4 Bxh4 23.Qh3 Bf6 24.Ra3 Qxd4 25.Bh2 Qxb2 26.Rae3 Rc1 27.Bxf5 exf5 28.Qxf5 Bc8 29.Qh5 g6 30.Qf3 Bxe5 31.Bxe5 Rxe1+ 32.Rxe1 Rxe5 33.Rd1 Kg7 34.Rd6 Re1+ 35.Kh2 Qe5+ 36.Qg3 Qh5+ 0-1
2021.07.13 Titled Tuesday 13th July
1614389 FM Salazar Cabezas, Alberto Javier (2124) FM Elgersma, Onno (2298) 0-1
1.Nf3 Nf6 2.c4 e6 3.Nc3 d5 4.e3 c5 5.cxd5 exd5 6.d4 Nc6 7.Bb5 Bd6 8.dxc5 Bxc5 9.O-O O-O 10.h3 a6 11.Bxc6 bxc6 12.b3 Bd6 13.Bb2 Re8 14.Rc1 Bd7 15.Na4 Ne4 16.Nd4 Rc8 17.Qe2 c5 18.Nf3 Bb5 19.Qd1 Bxf1 20.Qxf1 c4 21.Qd1 cxb3 22.Qxb3 Rxc1+ 23.Bxc1 Qa5 24.Nb2 Rc8 25.Nd3 Rc3 26.Qb1 Qb5 27.Nb2 Qe2 28.Nd3 Rxd3 0-1
2021.07.13 Titled Tuesday 13th July
1614685 FM Elgersma, Onno (2298) CM Tong, Hai Anh (1486) 1-0
1.d4 d5 2.Nf3 Nf6 3.g3 Bf5 4.Bg2 e6 5.O-O Nbd7 6.c4 h6 7.Nc3 Be7 8.Nd2 O-O 9.cxd5 exd5 10.Nxd5 Nxd5 11.Bxd5 c6 12.Bg2 Nf6 13.Nf3 Bd6 14.b3 Re8 15.Bb2 Nd5 16.Nd2 Bg6 17.e4 Nb6 18.f4 Bh7 19.e5 Bb4 20.f5 Nd5 21.Nc4 b5 22.a3 Bf8 23.Nd2 Ne3 24.Qh5 Nxf1 25.Rxf1 g6 26.fxg6 fxg6 27.Qg4 Bg7 28.Bxc6 Rc8 29.Bxe8 Qxe8 30.Ne4 Rc2 31.Rf2 Qc6 32.d5 Qb6 33.Qe6+ Qxe6 34.dxe6 Rxf2 35.Kxf2 g5 36.Nd6 Kf8 37.Nxb5 Ke7 38.Nxa7 Kxe6 39.Nc6 Bf8 40.b4 Kd5 41.Nd8 Bg8 42.Ke3 Be7 43.Nb7 Kc6 44.Na5+ Kb5 45.Ke4 Be6 46.Bd4 h5 47.Nb7 Kc4 48.Bc5 Bd5+ 49.Ke3 Bxb7 50.Bxe7 Bd5 51.h4 gxh4 52.gxh4 Be6 53.Kf4 Kd5 54.a4 Kc4 55.b5 Kd5 56.b6 Kc6 57.a5 Kb7 58.Kg5 Bg4 59.Kf6 Ka6 60.Bb4 Kb7 61.Be1 Kc6 62.e6 Kd6 63.e7 Bd7 64.b7 Kc7 65.a6 Kb8 66.Bg3+ Ka7 67.b8=Q+ Kxa6 68.e8=Q Be6 69.Qeb5# 1-0
2021.07.13 Titled Tuesday 13th July
1613210 FM Elgersma, Onno (2298) CM Vazquez Espino, Uriel (1977) 1-0
1.d4 Nf6 2.Nf3 g6 3.Nbd2 d5 4.b4 Bg7 5.e3 O-O 6.Bb2 a5 7.b5 Nbd7 8.c4 dxc4 9.Bxc4 b6 10.O-O Bb7 11.Rc1 Rc8 12.a4 Nd5 13.Qb3 e6 14.Ba3 Re8 15.Rc2 N7f6 16.Rfc1 Qd7 17.Ne5 Qd8 18.Ndf3 Ne7 19.Ng5 Rf8 20.Bxe6 Bd5 21.Bxd5 Nexd5 22.Bxf8 Qxf8 23.Ngxf7 Qe7 24.e4 1-0
2021.07.13 Titled Tuesday 13th July
1614748 IM Hnydiuk, A (2407) FM Elgersma, Onno (2298) 1-0
1.d4 d5 2.c4 e6 3.Nf3 Nf6 4.g3 Be7 5.Bg2 O-O 6.Qc2 c5 7.O-O cxd4 8.Nxd4 Nc6 9.Nxc6 bxc6 10.Nd2 a5 11.b3 a4 12.Bb2 Nd7 13.e4 Bf6 14.exd5 cxd5 15.cxd5 exd5 16.Bxd5 axb3 17.axb3 Rxa1 18.Rxa1 Ne5 19.Bg2 Ng4 20.h3 Bf5 21.Ne4 Bxe4 22.Bxe4 Bxb2 23.Qxb2 Nf6 24.Bg2 Qb6 25.b4 Rb8 26.b5 h6 27.Bf1 Ne4 28.Ra3 Rd8 29.Rd3 Rxd3 30.Bxd3 Nxg3 31.Qe5 g6 32.Qxg3 1-0
2021.07.13 Titled Tuesday 13th July
1613771 FM Elgersma, Onno (2298) Araujo Filho, Luiz Antonio Coel (2089) 1-0
1.d4 f5 2.Nf3 Nf6 3.g3 g6 4.Bg2 Bg7 5.O-O O-O 6.c4 d6 7.Nc3 Nc6 8.d5 Na5 9.Qd3 c5 10.Bg5 Bd7 11.Nd2 Rb8 12.a3 b6 13.b4 Nb7 14.Rae1 Ng4 15.e4 Ne5 16.Qe2 fxe4 17.Ncxe4 a6 18.bxc5 bxc5 19.Rb1 Bf5 20.f4 Ng4 21.Kh1 Nf6 22.Bh4 Qc7 23.Ng5 Qd7 24.Ne6 Bxe6 25.dxe6 Qc7 26.Nf3 Na5 27.Ng5 Nc6 28.Nf7 Nd4 29.Qd3 Rxb1 30.Rxb1 Rb8 31.Re1 Rb3 32.Qd1 Qb6 33.Ne5 Rxa3 34.Nd7 Qb3 35.Nxf6+ Bxf6 36.Qg4 Qc3 37.Rg1 Ra1 38.Bxf6 Rxg1+ 39.Kxg1 Qe1+ 40.Bf1 exf6 41.Kg2 Qd2+ 42.Kh3 Kf8 43.f5 g5 44.Qh4 Qf2 45.Qxh7 1-0
2021.07.07 34th Leon Blitz Open 2021
1614977 FM Elgersma, Onno (2298) GM Nguyen Ngoc Truong Son (2641) 0-1
1.e4 c5 2.Nf3 e6 3.g3 Nc6 4.Bg2 g6 5.Nc3 Bg7 6.O-O Nge7 7.d4 Nxd4 8.Nxd4 cxd4 9.Nb5 Qb6 10.Na3 O-O 11.Bf4 e5 12.Bd2 Qxb2 13.Nc4 Qb5 14.Nd6 Qc5 15.Nxc8 Raxc8 16.Rb1 Qc7 17.f4 exf4 18.gxf4 b6 19.Bb4 Rfe8 20.Bxe7 Rxe7 21.e5 d6 22.exd6 Qxd6 23.f5 Rec7 24.fxg6 hxg6 25.Qf3 Qc5 26.Rbc1 d3+ 27.Kh1 dxc2 28.Rf2 Qg5 29.Rff1 Bb2 30.Rxc2 Rxc2 31.Qxf7+ Kh8 32.Be4 Rxh2+ 33.Kxh2 Be5+ 34.Kh1 Qh4+ 35.Kg1 Qh2# 0-1
2021.07.07 34th Leon Blitz Open 2021
1615025 CM Bures, Vi (2144) FM Elgersma, Onno (2298) 1-0
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.cxd5 exd5 5.Bg5 c6 6.e3 Bd6 7.Bd3 O-O 8.Nge2 h6 9.Bh4 Re8 10.Bg3 a5 11.Qc2 Na6 12.a3 Nc7 13.O-O Ne6 14.Rab1 Ng5 15.b4 h5 16.b5 Bxg3 17.hxg3 Qd6 18.bxc6 bxc6 19.Na4 Ng4 20.Rb6 Bd7 21.Nc5 h4 22.Nxd7 hxg3 23.Nxg3 Qh6 24.Rc1 Rxe3 25.Rxc6 Qh2+ 26.Kf1 Rae8 27.Rc8 Nh3 28.Rxe8+ Rxe8 29.gxh3 Qxh3+ 30.Kg1 Nh2 31.Be2 g6 32.Nf6+ 1-0
2021.07.06 Titled Tuesday 6th July
1620481 IM Zubritskiy, A (2442) FM Elgersma, Onno (2298) 0-1
1.b4 Nf6 2.Bb2 d5 3.f4 e6 4.a3 Be7 5.Nf3 O-O 6.e3 b6 7.Be2 c5 8.O-O Nc6 9.b5 Na5 10.Ne5 Bb7 11.d3 Rc8 12.Nd2 Nd7 13.Qe1 f6 14.Nef3 c4 15.Bd4 cxd3 16.cxd3 Nc5 17.Rb1 Qd7 18.Qg3 Na4 19.Nb3 Nc3 20.Bxc3 Rxc3 21.Nxa5 bxa5 22.a4 Bc5 23.Nd4 Ra3 24.Ra1 Rxa1 25.Rxa1 Qd6 26.Bg4 Bc8 27.Nc6 Bd7 28.d4 Bb4 29.Nxa7 Ra8 30.Nc6 Bxc6 31.bxc6 Qxc6 32.f5 exf5 33.Bxf5 Re8 34.Qh3 g6 35.Bd7 Qc3 36.Bxe8 Qxa1+ 37.Kf2 Qe1+ 38.Kf3 Qf1+ 39.Kg4 h5+ 40.Kh4 Be1+ 41.g3 g5+ 0-1
2021.07.06 Titled Tuesday 6th July
1619240 CM Tong, Hai Anh (1486) FM Elgersma, Onno (2298) 1/2-1/2
1.Nf3 d5 2.g3 Nf6 3.Bg2 e6 4.O-O Be7 5.d3 O-O 6.c4 c5 7.cxd5 exd5 8.Nc3 Nc6 9.e4 Bg4 10.h3 Bh5 11.g4 Bg6 12.Nh4 dxe4 13.Nxg6 hxg6 14.dxe4 Nd4 15.e5 Nd7 16.Bxb7 Rb8 17.Bg2 Nxe5 18.Bf4 Bd6 19.Ne4 Nef3+ 20.Bxf3 Bxf4 21.Bg2 Rxb2 22.Nxc5 Rd2 23.Qa4 Ne2+ 24.Kh1 Qh4 25.Rae1 Ng3+ 26.Kg1 Bd6 27.Ne4 Nxe4 28.Rxe4 Bc5 29.Rf4 Bb6 30.Qb3 Qe7 31.Bd5 g5 32.Rf3 Rd4 33.Bc4 Rf4 34.Rxf4 gxf4 35.Qf3 Qh4 36.Qxf4 Qxh3 37.g5 Qc8 38.g6 Qh3 39.Bxf7+ Kh8 40.Rd1 Bc7 41.Qxc7 Qg4+ 42.Qg3 Qxd1+ 43.Kg2 Qh5 44.f3 Rd8 45.Qh3 Qxh3+ 46.Kxh3 Rd2 47.Kg4 a5 48.f4 a4 49.Kg5 a3 50.f5 Rf2 51.Kg4 Rb2 52.Kg5 Rf2 53.Kg4 Rf1 54.Kg5 Rf2 1/2-1/2
2021.07.06 Titled Tuesday 6th July
1620273 FM Elgersma, Onno (2298) Tanenbaum, Zachary (2137) 1-0
1.d4 d5 2.Nf3 Nf6 3.g3 Bf5 4.Bg2 e6 5.O-O c6 6.c4 Nbd7 7.Nc3 Be7 8.Nd2 O-O 9.e4 dxe4 10.Ndxe4 Nxe4 11.Nxe4 Nf6 12.Nc3 Qd7 13.Be3 Rfd8 14.Qb3 Ng4 15.Rad1 Nxe3 16.fxe3 Bg6 17.e4 e5 18.d5 Bc5+ 19.Kh1 Bh5 20.Bf3 Bxf3+ 21.Rxf3 Rab8 22.dxc6 Qxc6 23.Nd5 Rd7 24.Rdf1 Rbd8 25.a4 a5 26.Qb5 f6 27.Kg2 Bd4 28.b3 h5 29.Qxa5 h4 30.gxh4 Qe6 31.Rg3 Kh8 32.Qd2 Bc5 33.Qe2 Qe8 34.Qg4 Kh7 35.h5 Qf7 36.Qf5+ Kh8 37.h6 gxh6 38.Qxf6+ Qxf6 39.Rxf6 Rg7 40.Rxh6+ Kg8 41.Rhg6 Rxg6 42.Rxg6+ Kf7 43.Rg3 Bd4 44.h4 Rh8 45.Kh3 b6 46.Rf3+ Ke8 47.Kg4 Rg8+ 48.Kh5 Rh8+ 49.Kg4 Rg8+ 50.Kh3 Rh8 51.Rf5 Kd7 52.h5 Kc6 53.Kg4 Kc5 54.Rf6 Bg1 55.h6 Kd4 56.Kh5 Kxe4 57.Rf7 Kd3 58.h7 e4 59.Kg6 Bd4 60.Rg7 e3 61.Rg8 e2 62.Nf4+ Kd2 63.Nxe2 Kxe2 64.Rxh8 Bxh8 65.a5 bxa5 66.c5 Kd3 67.c6 Be5 68.c7 Bxc7 69.h8=Q Bb6 70.Qc8 Bd4 71.Qc4+ Ke3 72.Kf5 Bb2 73.Ke6 Ba3 74.Kd5 Bb4 75.Qe4+ Kd2 76.Kc4 Kc1 77.Qe2 Kb1 78.Kd3 Ka1 79.Qc2 Ba3 80.Kd2 Bb4+ 81.Kd1 Ba3 82.Qc4 Bb4 83.Kc2 Ka2 84.Qd4 Ba3 85.Qa4 Ka1 86.Qxa3# 1-0
2021.07.06 Titled Tuesday 6th July
1618743 FM Elgersma, Onno (2298) CM Briscoe, C (2192) 1-0
1.e4 c5 2.Nf3 d6 3.Bb5+ Nd7 4.d4 cxd4 5.Qxd4 a6 6.Bxd7+ Bxd7 7.Nc3 Nf6 8.O-O e5 9.Qd3 Be7 10.a4 Bc6 11.Rd1 Qc7 12.Bg5 O-O 13.Nd2 Rac8 14.Nf1 Nxe4 15.Bxe7 Nxc3 16.Bxf8 Nxd1 17.Bxd6 Nxb2 18.Qc3 Qxd6 19.Qxb2 Be4 20.Ne3 Qd4 21.Qa3 Rc3 22.Qe7 g6 23.Rd1 Rxe3 24.Qd8+ Qxd8 25.Rxd8+ Kg7 26.fxe3 Bxc2 27.a5 Be4 28.Kf2 Bc6 29.g4 f5 30.Kg3 Kf6 31.Rf8+ Kg7 32.Rc8 fxg4 33.Rc7+ Kf6 34.Rxh7 Kg5 35.Re7 Kf6 36.Rc7 Kg5 37.Rc8 Kf6 38.Rd8 Kg5 39.Rd2 Kf5 40.Rf2+ Ke4 41.Rf6 Kxe3 42.Rxg6 Bf3 43.h4 Kd2 44.h5 e4 45.Re6 e3 46.h6 e2 47.Rxe2+ Kxe2 48.h7 1-0
2021.07.06 Titled Tuesday 6th July
1620061 FM Elgersma, Onno (2298) GM Mirzoev, A (2430) 0-1
1.e4 c6 2.Nf3 d5 3.Nc3 Nf6 4.Qe2 e6 5.g3 d4 6.Nb1 c5 7.d3 Nc6 8.Bg2 e5 9.O-O Bd6 10.Nfd2 O-O 11.h3 a6 12.f4 b5 13.a4 Rb8 14.axb5 axb5 15.f5 Nd7 16.g4 f6 17.g5 fxg5 18.Nf3 h6 19.h4 g4 20.Nh2 h5 21.Bg5 Be7 22.Bxe7 Qxe7 23.Qf2 Nb6 24.Na3 Na4 25.Rfb1 Ba6 26.Qg3 Rb6 27.Kh1 Qf6 28.Bf1 Nb4 29.c3 dxc3 30.bxc3 Nxc3 31.Rc1 Na4 32.Rab1 Rd6 33.Be2 Rfd8 34.Rb3 R6d7 35.Kg1 Rd6 36.Kh1 Qh6 37.Rd1 Nc6 38.Nxb5 Bxb5 39.Rxb5 Nc3 40.Rxc5 Nxe2 41.Qf2 Ned4 42.Nf1 Qf4 43.Kg2 Qxf2+ 44.Kxf2 Nf3 45.Ng3 Nb4 46.Rc3 Nxd3+ 47.Ke3 Nf4 48.Rxd6 Rxd6 49.Rc8+ Kh7 50.f6 Rxf6 51.Nf5 Ng6 52.Rc7 Nfxh4 53.Nxg7 Rf3+ 54.Ke2 Kh6 55.Nf5+ Nxf5 56.exf5 Rxf5 0-1
2021.07.06 Titled Tuesday 6th July
1620611 FM Elgersma, Onno (2298) FM Vakhlamov, I (2413) 0-1
1.e4 c5 2.Nc3 Nc6 3.Nf3 g6 4.Bb5 Bg7 5.O-O e5 6.d3 Nge7 7.Nd5 O-O 8.Nxe7+ Qxe7 9.Nd2 d6 10.Bxc6 bxc6 11.Nc4 f5 12.exf5 Bxf5 13.f4 e4 14.Kh1 exd3 15.cxd3 Rae8 16.Qf3 d5 17.Ne5 Bxe5 18.fxe5 Bg4 19.Qxf8+ Rxf8 20.Rxf8+ Qxf8 21.Be3 d4 22.Bg5 Qf2 23.h3 Be6 0-1
2021.07.06 Titled Tuesday 6th July
1620385 IM Costachi, M (2471) FM Elgersma, Onno (2298) 1-0
1.Nf3 Nf6 2.d4 d5 3.c4 e6 4.Nc3 a6 5.cxd5 exd5 6.Bg5 Be6 7.Qc2 Bd6 8.e3 O-O 9.Bd3 h6 10.Bh4 Nbd7 11.O-O Re8 12.Bg3 Qe7 13.Rab1 Rac8 14.a3 c6 15.b4 b5 16.Ne2 Nb6 17.Bxd6 Qxd6 18.Ne5 Nc4 19.Bxc4 dxc4 20.Nc3 a5 21.f4 axb4 22.axb4 Nd5 23.Ne4 Qf8 24.Qd2 Bf5 25.Nc5 Bxb1 26.Rxb1 f6 27.Ng6 Qf7 28.f5 Nxe3 29.Qf2 c3 30.Rc1 c2 31.Nf4 Nd1 32.Qd2 Qc4 33.Nce6 Qc3 34.Qxc3 Nxc3 35.Rxc2 Nd5 36.Nxd5 cxd5 37.Rc5 Rxc5 38.dxc5 Rxe6 39.fxe6 Kf8 40.c6 1-0
2021.07.06 Titled Tuesday 6th July
1619900 Hryshchenko, Kamila (2055) FM Elgersma, Onno (2298) 0-1
1.e4 c5 2.Nf3 e6 3.Be2 Nc6 4.d4 cxd4 5.Nxd4 a6 6.Nc3 Nf6 7.Nxc6 bxc6 8.e5 Nd5 9.Ne4 Qc7 10.c4 Qxe5 11.cxd5 Qxe4 12.dxe6 fxe6 13.O-O Bc5 14.Bd3 Qh4 15.g3 Qh3 16.b4 Ba7 17.Qf3 d5 18.Bb2 Rf8 19.Qe2 Bd7 20.Rae1 Rf7 21.Bxa6 Kf8 22.Bd3 Kg8 23.a4 Raf8 24.Be5 Rxf2 25.Rxf2 Rxf2 26.Qxf2 Bxf2+ 27.Kxf2 Qxh2+ 28.Kf3 c5 29.bxc5 d4 30.Be4 Qh5+ 31.g4 Qh3+ 32.Bg3 e5 33.c6 Qxg4+ 34.Kf2 Be6 35.Bxe5 h5 36.c7 h4 37.Bf3 Qf5 38.Bxd4 h3 39.Re5 Qc2+ 40.Kg3 Bd7 41.Re7 Qg6+ 42.Kf2 Qc2+ 43.Be2 Qxc7 44.Rxg7+ Kf8 45.Bf3 Qf4 46.Rxd7 h2 47.Bc5+ Ke8 48.Re7+ Kd8 49.Re1 Qd2+ 50.Re2 Qc3 51.Be3 Qf6 52.Rd2+ Ke8 53.Bd4 Qxf3+ 54.Kxf3 h1=Q+ 55.Ke3 Qa8 56.Kd3 Kd7 57.Ra2 Qf3+ 58.Kc4 Qf7+ 59.Kb4 Qxa2 60.a5 Kc6 61.Bb6 Qb2+ 62.Kc4 Qb5+ 63.Kd4 Qd5+ 64.Ke3 Kb5 65.Kf4 Kc4 66.a6 Qd6+ 67.Ke3 Qxb6+ 0-1
2021.07.06 Titled Tuesday 6th July
1619402 FM Elgersma, Onno (2298) WFM Demeter, Dorina (2039) 1-0
1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bc4 Nxe4 5.Nxe4 d5 6.Bxd5 Qxd5 7.Nc3 Qc4 8.d3 Qg4 9.O-O Bd6 10.Ne4 Be7 11.Re1 O-O 12.Ng3 Bd6 13.h3 Qg6 14.Nh4 Qe6 15.Ne4 h6 16.Nf3 f5 17.Nxd6 cxd6 18.d4 Qf6 19.dxe5 dxe5 20.Nd2 Be6 21.c3 Rad8 22.Qe2 e4 23.Nb3 Bxb3 24.axb3 Ne5 25.Be3 Nd3 26.Red1 f4 27.Bd4 Qg5 28.Qxe4 1-0
2021.07.06 Titled Tuesday 6th July
1618916 FM Elgersma, Onno (2298) IM Shahade, G (2476) 0-1
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.d3 b5 6.Bb3 Bc5 7.Nc3 h6 8.O-O d6 9.h3 O-O 10.a3 Re8 11.Nd5 Rb8 12.c3 Nxd5 13.Bxd5 Ne7 14.Ba2 Ng6 15.b4 Bb6 16.a4 c6 17.Re1 Qf6 18.axb5 axb5 19.d4 Nf4 20.Bxf4 Qxf4 21.Qd3 Be6 22.d5 cxd5 23.Bxd5 Bxh3 24.gxh3 Qg3+ 25.Kh1 Qxh3+ 26.Kg1 Qg3+ 27.Kh1 Bxf2 28.Qe2 Qh3+ 29.Nh2 Bxe1 30.Rxe1 Qxc3 31.Rf1 Re6 32.Bxe6 fxe6 33.Qg4 Qc4 34.Qg6 Rf8 35.Rxf8+ Kxf8 36.Nf3 Qf1+ 37.Ng1 Qf4 38.Qh7 Kf7 39.Qh8 Qxe4+ 40.Kh2 Qxb4 41.Qg8+ Kxg8 0-1
2021.07.06 Titled Tuesday 6th July
1619692 IM Kovalev, De (2487) FM Elgersma, Onno (2298) 1/2-1/2
1.d3 d5 2.Nf3 Nf6 3.g3 e6 4.Bg2 Be7 5.Kf1 O-O 6.Kg1 c5 7.Nbd2 Nc6 8.h3 e5 9.Kh2 h6 10.e4 Be6 11.exd5 Nxd5 12.Re1 f6 13.c3 Qd7 14.Qc2 Rad8 15.Ne4 Rfe8 16.a3 Rc8 17.Rb1 Bf7 18.c4 Nc7 19.Bd2 Ne6 20.b4 Ned4 21.Nxd4 Nxd4 22.Qd1 b6 23.Nc3 Nc6 24.Nd5 Bf8 25.Be3 Kh8 26.Qa4 Be6 27.Qb5 Nd4 28.Qxd7 Bxd7 29.Bxd4 cxd4 30.a4 Bxa4 31.Ra1 b5 32.Be4 Red8 33.g4 Bb3 34.Rxa7 bxc4 35.Nb6 Rb8 36.Nxc4 Bxb4 37.Rb1 Bf8 38.Na5 Bg8 39.Rxb8 Rxb8 40.Nc6 Rc8 41.Kg3 Be6 42.h4 f5 43.gxf5 Bxf5 44.Nxe5 Bxe4 45.dxe4 Bd6 46.f4 Bxe5 47.fxe5 d3 48.Rd7 Rc3 49.Kf4 Kg8 50.e6 Kf8 51.Ke5 d2 52.Rxd2 Rc5+ 53.Rd5 Rc7 54.h5 Ke7 55.Rd7+ Rxd7 56.exd7 Kxd7 57.Kf5 Ke7 58.Kg6 Kf8 59.e5 Kg8 60.e6 Kf8 61.Kh7 Ke7 62.Kxg7 Kxe6 63.Kg6 Ke7 64.Kg7 Ke8 65.Kxh6 Kf7 66.Kh7 Kf8 67.h6 Kf7 68.Kh8 Kf8 69.h7 Kf7 1/2-1/2
2021.06.29 Titled Tuesday 29th June
1624350 FM Lopez del Alamo, An (2264) FM Elgersma, Onno (2298) 1-0
1.e4 c5 2.Nf3 e6 3.d3 Nc6 4.g3 d5 5.Qe2 Nf6 6.Bg2 Be7 7.O-O O-O 8.e5 Nd7 9.c4 a6 10.h4 Rb8 11.Bf4 dxc4 12.dxc4 b5 13.Nc3 bxc4 14.Rad1 Qc7 15.Ng5 Nd4 16.Qh5 Bxg5 17.hxg5 Bb7 18.Ne4 Nxe5 19.g6 Ne2+ 20.Qxe2 fxg6 21.Rfe1 c3 22.Nxc3 Bxg2 23.Bxe5 Qb7 24.Bxb8 Bh3 25.Qe4 Qxb8 26.b3 c4 27.Qxc4 Qa7 28.Ne4 Bg4 29.Rd6 Bf3 30.Qxe6+ Kh8 31.Ng5 Bd5 32.Qe3 Qb7 33.Rxd5 Qxd5 34.Ne4 Qf5 35.Nd6 1-0
2021.06.29 Titled Tuesday 29th June
1623664 FM Elgersma, Onno (2298) CM Singh, Ojasva (2278) 0-1
1.e4 e5 2.Nc3 Nf6 3.Nf3 Nc6 4.Bb5 d6 5.O-O Bd7 6.d4 exd4 7.Nxd4 Be7 8.Bg5 O-O 9.Bxc6 bxc6 10.Qf3 h6 11.Bh4 Rb8 12.Rab1 Rb4 13.Nf5 Bxf5 14.Qxf5 Nxe4 15.Nxe4 Bxh4 16.Qg4 c5 17.Qf3 Re8 18.Nc3 Rd4 19.Rbd1 Rxd1 20.Rxd1 Bf6 21.Ne4 Bxb2 22.Nxc5 Qe7 23.Nd3 Bc3 24.g3 Qe2 25.Kg2 Qxf3+ 26.Kxf3 Rb8 27.Nf4 Rb2 28.Nd5 Ba5 29.Ne7+ Kf8 30.Nc6 Bb6 31.Re1 Rxc2 32.Nb8 Rxf2+ 33.Kg4 f5+ 34.Kh5 Kf7 35.Nd7 Rxh2# 0-1
2021.06.29 Titled Tuesday 29th June
1623433 GM Hansen, Eric (2606) FM Elgersma, Onno (2298) 1-0
1.e4 Nc6 2.Nf3 d6 3.Nc3 Nf6 4.d4 g6 5.d5 Nb8 6.Be2 Bg7 7.O-O O-O 8.Re1 c6 9.Bf1 a6 10.a4 b6 11.Nd4 Bb7 12.Bc4 c5 13.Nf3 Nbd7 14.h3 b5 15.axb5 Nb6 16.Bf1 axb5 17.Rxa8 Bxa8 18.Bxb5 Nfd7 19.Bg5 Ne5 20.Nxe5 Bxe5 21.Qd2 Qc7 22.Ra1 c4 23.Be3 Rb8 24.Bd4 Nd7 25.Ra7 1-0
2021.06.29 Titled Tuesday 29th June
1624041 FM Elgersma, Onno (2298) WIM Havanecz, B (2257) 0-1
1.c4 c5 2.Nc3 g6 3.Nf3 Bg7 4.e3 e6 5.d4 cxd4 6.exd4 Ne7 7.Bg5 h6 8.Bh4 O-O 9.Bd3 g5 10.Bg3 d5 11.cxd5 Nxd5 12.O-O Nc6 13.Bb1 b6 14.Re1 Bb7 15.Nb5 Nce7 16.Nd6 Ba6 17.Qa4 Bc8 18.Qc2 f5 19.Nxc8 Rxc8 20.Qe2 f4 21.Qxe6+ Rf7 22.Ne5 Bxe5 23.dxe5 fxg3 24.Bh7+ Kg7 25.fxg3 Rc6 26.Qh3 Kxh7 27.Rf1 Qf8 28.Rxf7+ Qxf7 29.Rf1 Qg7 30.Qd7 Rc2 31.Qe6 Qg6 32.Rf7+ Kh8 33.Rf8+ Kg7 0-1
2021.06.29 Titled Tuesday 29th June
1623802 CM Blanco, Ce (2065) FM Elgersma, Onno (2298) 0-1
1.d4 d5 2.Nf3 Nf6 3.g3 e6 4.Bg2 Be7 5.O-O O-O 6.c4 dxc4 7.Qc2 a6 8.Qxc4 b5 9.Qc2 Bb7 10.Rd1 Nbd7 11.b3 Rc8 12.Bb2 Qe8 13.Nbd2 c5 14.Qd3 c4 15.bxc4 bxc4 16.Nxc4 Be4 17.Qb3 Rb8 18.Qa4 Rb4 19.Qxa6 Bb7 20.Qa7 Bxf3 21.Bxf3 Rxc4 22.a4 Qb8 23.Qxb8 Rxb8 24.Ba3 Bxa3 25.Rxa3 Nd5 26.a5 f5 27.g4 g6 28.Rda1 Ra8 29.a6 Kf7 30.e4 fxe4 31.Bxe4 Rxd4 32.Bxd5 exd5 33.a7 Rxg4+ 34.Kf1 Rc4 35.Ra6 Rc7 36.Ke2 Nc5 37.R6a5 Nb3 0-1
2021.06.01 Titled Tuesday 1st June
1662238 IM Gokerkan, Cem Kaan (2470) FM Elgersma, Onno (2298) 1/2-1/2
1.e4 c5 2.c3 e6 3.d4 d5 4.exd5 exd5 5.Nf3 Nc6 6.Bb5 Bg4 7.O-O Bd6 8.Re1+ Ne7 9.dxc5 Bxc5 10.h3 Bh5 11.Be3 Bd6 12.c4 dxc4 13.Nbd2 c3 14.Nc4 Bc7 15.Bc5 O-O 16.bxc3 Re8 17.g4 Bg6 18.Qxd8 Raxd8 19.Bxe7 Rxe7 20.Bxc6 Rxe1+ 21.Rxe1 bxc6 22.Re7 Bf4 23.Nce5 Be4 24.Kg2 Bxe5 25.Rxe5 Bxf3+ 26.Kxf3 Kf8 27.Ke3 Re8 28.Rxe8+ Kxe8 29.Kd4 Kd7 30.Kc5 Kc7 31.f4 Kd7 32.Kb4 Kc7 33.Ka5 Kb7 34.c4 f6 35.f5 Kb8 36.Ka6 Ka8 37.h4 Kb8 38.g5 Ka8 39.h5 h6 40.gxh6 gxh6 41.Ka5 Kb7 42.Kb4 Kb6 43.c5+ Ka6 44.Ka4 Kb7 45.Ka5 Ka8 46.Ka6 Kb8 47.a3 Ka8 48.a4 Kb8 49.a5 Ka8 1/2-1/2
2021.06.01 Titled Tuesday 1st June
1662763 IM Disconzi da Silva, R (2333) FM Elgersma, Onno (2298) 0-1
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 a6 5.cxd5 exd5 6.Bf4 Bd6 7.Bg3 O-O 8.Qc2 Re8 9.e3 Bg4 10.Bd3 Nc6 11.a3 Bxf3 12.gxf3 Nxd4 13.Qd1 c5 14.Bh4 Be5 15.f4 Bxf4 16.Bxf6 Qxf6 17.Nxd5 Qh4 18.Nxf4 Qxf4 19.Kf1 Rxe3 20.Rg1 Rf3 21.Rg2 Re8 22.Rc1 Rxd3 0-1
2021.06.01 Titled Tuesday 1st June
1661776 GM Sumets, A (2546) FM Elgersma, Onno (2298) 1-0
1.d4 d5 2.c4 e6 3.Nf3 Nf6 4.g3 Be7 5.Bg2 O-O 6.O-O dxc4 7.Qc2 a6 8.Rd1 Nbd7 9.Qxc4 b5 10.Qc2 Bb7 11.a4 Be4 12.Qd2 c5 13.Nc3 Bc6 14.Ne5 Bxg2 15.Kxg2 b4 16.Nb1 cxd4 17.Nc6 Qe8 18.Nxe7+ Qxe7 19.Qxd4 e5 20.Qd6 Qxd6 21.Rxd6 Nc5 22.Nd2 Rfd8 23.Rc6 Rac8 24.Rxc8 Rxc8 25.b3 Rd8 26.Ra2 Nd5 27.Rc2 Ne6 28.Bb2 Nd4 29.Bxd4 exd4 30.Rc6 h6 31.Rxa6 Nc3 32.Kf3 Re8 33.e3 dxe3 34.fxe3 Nd1 35.Nc4 g5 36.Rxh6 g4+ 37.Ke2 Nc3+ 38.Kd3 Rd8+ 39.Rd6 Re8 40.Rd4 Kg7 41.Rxg4+ Kf6 42.Rf4+ Kg6 43.h4 Rd8+ 44.Rd4 Re8 45.g4 Kf6 46.g5+ Kf5 47.Nd6+ 1-0
2021.06.01 Titled Tuesday 1st June
1663577 FM Elgersma, Onno (2298) WFM Pandey, Srishti (2026) 0-1
1.d4 Nf6 2.Nf3 e6 3.Bg5 Be7 4.Nbd2 d5 5.e3 O-O 6.Bd3 c5 7.c3 b6 8.O-O Bb7 9.Ne5 Ne4 10.Bxe7 Qxe7 11.f4 f6 12.Nef3 Nd7 13.a3 Rac8 14.Qb1 f5 15.Qe1 a5 16.a4 Bc6 17.Qe2 Rb8 18.Ne5 Nxe5 19.fxe5 Qe8 20.Bxe4 fxe4 21.Rxf8+ Qxf8 22.b3 cxd4 23.exd4 Qf4 24.Rf1 Qg5 25.Qf2 Qe7 26.Qe3 b5 27.axb5 Bxb5 28.c4 Be8 29.c5 Bb5 30.Ra1 Qc7 31.Qc3 Ra8 32.b4 a4 33.Nb1 Rf8 34.Na3 Qf7 35.Qe1 Bd3 36.h3 Qf4 37.b5 e3 38.c6 Qxd4 39.c7 e2+ 40.Kh2 Qxe5+ 41.Qg3 Qxa1 42.Qd6 Qf6 0-1
2021.06.01 Titled Tuesday 1st June
1662625 FM Elgersma, Onno (2298) CM Krzywda, A (2115) 0-1
1.d4 Nf6 2.Nf3 c5 3.dxc5 Na6 4.c4 Nxc5 5.Nc3 g6 6.Bf4 d6 7.e3 Bg7 8.Be2 O-O 9.O-O Bd7 10.Rc1 Rc8 11.h3 Bc6 12.Nd4 Bd7 13.b3 e5 14.Bg5 exd4 15.exd4 Ne6 16.Be3 d5 17.cxd5 Nc7 18.Bf3 Nb5 19.Na4 b6 20.Qd2 Re8 21.Bg5 h6 22.Bf4 Bf5 23.Rxc8 Qxc8 24.Qb4 Qd7 25.d6 Be4 26.Be2 Bc6 27.Be5 Nd5 28.Qd2 Bxe5 29.dxe5 Rxe5 30.Bc4 Qxd6 31.Rd1 Rg5 32.Bxb5 Bxb5 33.Nc3 Bc6 34.Ne4 Qe5 35.Nxg5 hxg5 36.Re1 Qf6 37.Re8+ Bxe8 0-1
2021.06.01 Titled Tuesday 1st June
1663405 GM Moroni, L (2546) FM Elgersma, Onno (2298) 1-0
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.cxd5 exd5 5.Bg5 c6 6.e3 Bd6 7.Bd3 O-O 8.Nge2 h6 9.Bh4 Re8 10.Qc2 a5 11.a3 Na6 12.Bg3 Nc7 13.Bxd6 Qxd6 14.Ng3 h5 15.Na4 h4 16.Ne2 Ne6 17.Nb6 Rb8 18.Qc3 Ng5 19.Qxa5 h3 20.g3 Nf3+ 21.Kf1 Bg4 22.Qc5 Qxc5 23.dxc5 Nd2+ 24.Ke1 Nfe4 25.Bxe4 Nxe4 26.Nd4 Ng5 27.b4 Re4 28.Kd2 Rbe8 29.Kc3 Nf3 30.Nxf3 Bxf3 31.Rhe1 f5 32.Kd2 g5 33.Rab1 Kf7 34.a4 d4 35.b5 dxe3+ 36.Rxe3 cxb5 37.axb5 Rd4+ 38.Kc3 Rxe3+ 39.fxe3 Re4 40.Nc4 Be2 41.Nd6+ 1-0
2021.06.01 Titled Tuesday 1st June
1662391 Jarovinsky, A (2305) FM Elgersma, Onno (2298) 1-0
1.Nc3 c5 2.e4 e6 3.g3 Nf6 4.e5 Nd5 5.Bg2 Nxc3 6.dxc3 Nc6 7.Nf3 Be7 8.Bf4 O-O 9.O-O Qb6 10.b3 Rd8 11.Nd2 d5 12.exd6 Bxd6 13.Nc4 Bxf4 14.Nxb6 Rxd1 15.Rfxd1 axb6 16.gxf4 Kf8 17.Bxc6 bxc6 18.Rd8+ Ke7 19.Rh8 Bb7 20.Rxa8 Bxa8 21.a4 h6 22.a5 b5 23.b4 cxb4 24.cxb4 g5 25.fxg5 hxg5 26.Rd1 f6 27.Rd3 Bb7 28.f3 e5 29.Kf2 f5 30.c3 Bc8 31.Rd1 Bb7 32.h4 gxh4 33.Rh1 Ke6 34.Rxh4 Ba6 35.Rh8 Kd5 36.Ra8 Bb7 37.Rb8 Ba6 38.Rb6 Bc8 39.a6 1-0
2021.06.01 Titled Tuesday 1st June
1661391 FM Elgersma, Onno (2298) CM Hartikainen, J (2142) 1-0
1.e4 c5 2.Nf3 Nc6 3.Bb5 g6 4.c3 Bg7 5.O-O Nf6 6.Re1 O-O 7.h3 Qb6 8.a4 a6 9.Bf1 e5 10.Na3 d5 11.exd5 Nxd5 12.Nc4 Qc7 13.a5 b5 14.axb6 Nxb6 15.Ng5 h6 16.Ne4 Nxc4 17.Bxc4 Na5 18.Bd5 Bb7 19.Rxa5 Bxd5 20.Rxc5 Qd7 21.Qf3 Be6 22.Nf6+ Bxf6 23.Qxf6 Rac8 24.d4 Rxc5 25.Bxh6 1-0
2021.06.01 Titled Tuesday 1st June
1661940 FM Elgersma, Onno (2298) FM Toncheva, Nadya (2207) 1-0
1.d4 d5 2.Nf3 Nf6 3.Bf4 c5 4.e3 Nc6 5.Nbd2 cxd4 6.exd4 Qb6 7.Nb3 e6 8.c3 Be7 9.Bd3 O-O 10.O-O a5 11.a4 Re8 12.Rb1 Bf8 13.Nbd2 Qd8 14.Re1 Ne7 15.Ne5 Ng6 16.Bg3 Nxe5 17.Bxe5 Bd6 18.Qf3 b6 19.Qh3 h6 20.Nf3 Ba6 21.Bc2 Bb7 22.Qg3 Bxe5 23.dxe5 Ne4 24.Bxe4 dxe4 25.Nd4 Qg5 26.Qxg5 hxg5 27.Re3 f5 28.Rg3 g4 29.h3 gxh3 30.gxh3 Rac8 31.Kh2 Rc5 32.Rbg1 Re7 33.Nxe6 Rxe6 34.Rxg7+ Kf8 35.Rxb7 Rcxe5 36.Rgg7 Re7 37.Rgxe7 Rxe7 38.Rxe7 Kxe7 39.Kg3 Kf6 40.Kf4 Kg6 41.b4 1-0
2021.05.25 Titled Tuesday 25th May
1670422 FM Stelmaszyk, Nico (2299) FM Elgersma, Onno (2298) 1/2-1/2
1.e4 c5 2.Nf3 e6 3.c3 d5 4.exd5 exd5 5.d4 Nc6 6.Bb5 Bg4 7.O-O Bd6 8.dxc5 Bxc5 9.Nbd2 Ne7 10.Nb3 Bb6 11.Be2 O-O 12.h3 Bh5 13.Bg5 Bc7 14.Nfd4 Qd6 15.g3 Bxe2 16.Qxe2 Qd7 17.Nxc6 Nxc6 18.Kh2 Rfe8 19.Qc2 Ne5 20.Nd4 Bb6 21.Be3 Bxd4 22.Bxd4 Nf3+ 23.Kg2 Ng5 24.g4 h5 25.Qf5 Qxf5 26.gxf5 h4 27.Rae1 f6 28.f3 Nf7 29.Bf2 Nh6 30.Bxh4 Nxf5 31.Bf2 Kf7 32.f4 Rad8 33.Bxa7 Ra8 34.Rxe8 Kxe8 35.Bc5 Rxa2 36.Re1+ Kf7 37.Ba3 b5 38.Kf3 d4 39.cxd4 Nxd4+ 40.Ke4 Nc2 41.Rb1 Nxa3 42.bxa3 Rxa3 43.Rxb5 Rxh3 44.f5 Rh4+ 45.Kf3 Rh3+ 46.Kg4 Re3 47.Rb7+ Kg8 48.Rb8+ Kh7 49.Rb5 Re4+ 50.Kf3 Rd4 51.Rb1 Ra4 52.Rh1+ Kg8 53.Rb1 Ra3+ 54.Kf4 Ra4+ 55.Kf3 Kf7 56.Rb7+ Kg8 57.Rb8+ Kh7 58.Rb1 Kh6 59.Rg1 Ra5 60.Kf4 Ra4+ 61.Kf3 Rh4 62.Rg6+ Kh7 63.Rg1 Rh3+ 64.Kf4 Ra3 65.Rg2 Ra4+ 66.Kf3 Kg8 67.Rb2 Ra7 68.Kf4 Kf7 69.Re2 Re7 70.Rg2 Rc7 71.Re2 g6 72.fxg6+ Kxg6 73.Rg2+ Kf7 74.Ra2 Rc4+ 75.Kf5 Rc5+ 76.Kf4 Kg6 77.Rb2 Rc4+ 78.Kf3 Kg5 79.Rb5+ f5 80.Kf2 Rc3 81.Rb4 Ra3 82.Rc4 Rd3 83.Rb4 Rd5 84.Rc4 Re5 85.Rb4 Re4 86.Rxe4 fxe4 87.Ke3 Kf5 88.Ke2 Kf4 89.Kf2 e3+ 90.Ke2 Ke4 91.Ke1 Kd4 92.Ke2 Ke4 93.Ke1 Ke5 94.Ke2 Kf4 95.Ke1 Kg3 96.Ke2 Kf4 97.Ke1 Ke4 98.Ke2 Kd4 99.Ke1 Kd3 100.Kd1 Kd4 101.Ke2 Ke4 1/2-1/2
2021.05.25 Titled Tuesday 25th May
1670203 FM Lee, Qing Aun (2262) FM Elgersma, Onno (2298) 1/2-1/2
1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 5.Nc3 a6 6.Be3 Nf6 7.a3 h5 8.Be2 Qc7 9.Qd2 Ng4 10.Bxg4 hxg4 11.O-O-O Ne5 12.Bf4 d6 13.Bxe5 dxe5 14.Nb3 Be7 15.Qe3 Rh5 16.Kb1 b5 17.h3 gxh3 18.Rxh3 Rxh3 19.Qxh3 Bf6 20.g4 Bb7 21.Qe3 Rc8 22.Rh1 g6 23.g5 Bg7 24.Rh7 Kf8 25.Nd2 a5 26.Nxb5 Qxc2+ 27.Ka2 Rd8 28.Nb3 Rb8 29.Qc5+ Qxc5 30.Nxc5 Bc6 31.Nc3 Kg8 32.Rh3 Bf8 33.Nb3 a4 34.Na5 Bd7 35.Nc4 Be8 36.Nxe5 Bc5 37.Ng4 Bd4 38.e5 Kf8 39.f4 Ke7 40.Rd3 Bc5 41.Nf6 Bc6 42.Nce4 Ba7 43.Nc3 Rb3 44.Rd6 Rb6 45.Nce4 Bb8 46.Rd3 Ba7 47.Ng8+ Kf8 48.Ngf6 Ke7 49.Rh3 Rb5 50.Nd6 Bd5+ 51.Nxd5+ Rxd5 52.Rh8 Bc5 53.Re8+ Kd7 54.Rf8 Bxd6 55.exd6 Kxd6 56.Rxf7 Rd4 57.Rf6 Re4 58.Rxg6 Rxf4 59.Rh6 Rg4 60.g6 Kd5 61.Rh5+ e5 62.Rh6 Rxg6 63.Rxg6 e4 64.Ra6 e3 65.Rxa4 e2 66.Ra5+ Kd4 67.Ra8 e1=Q 68.Rd8+ Kc5 69.Rc8+ Kb6 70.Rc3 Kb5 71.Rb3+ Ka4 72.Rc3 Qe6+ 73.Ka1 Qd5 74.Kb1 Qd1+ 75.Ka2 Qd5+ 76.Ka1 Qe6 77.Kb1 Kb5 78.Ka1 Qe2 79.Kb1 Qd1+ 80.Ka2 Qe1 81.Rb3+ Ka4 82.Rc3 Qd1 83.Rc4+ Kb5 84.Rc3 Ka5 85.Rc5+ Kb6 86.Rc3 Ka5 87.Rc5+ Kb6 88.Rc3 Ka6 89.Rc6+ Kb5 90.Rc3 1/2-1/2
2021.05.25 Titled Tuesday 25th May
1669969 FM Elgersma, Onno (2298) GM Bortnyk, Olexandr (2598) 0-1
1.d4 d6 2.Nf3 Nf6 3.Bg5 c6 4.e3 Bg4 5.Nbd2 Nbd7 6.Be2 Qc7 7.O-O e5 8.e4 Be7 9.c3 O-O 10.h3 Bh5 11.Qc2 Rad8 12.Rfe1 Rfe8 13.Rad1 h6 14.Bh4 Bg6 15.dxe5 dxe5 16.Bc4 b5 17.Bb3 a5 18.a3 Nc5 19.Bg3 Bd6 20.Ba2 a4 21.Nh4 Bh7 22.Nf5 Nfxe4 23.Nxe4 Bxf5 24.Nf6+ gxf6 25.Qxf5 Bf8 26.Bh4 Bg7 27.Bxf6 Rxd1 28.Rxd1 Ne6 29.Rd3 Kf8 30.Rg3 Bxf6 31.Qxf6 Qd6 32.Qxh6+ Ke7 33.Qh7 Rf8 34.Rd3 Qc5 35.Qh4+ f6 36.Bxe6 Kxe6 37.Qg4+ f5 38.Qg6+ Ke7 39.Qg7+ Ke6 40.Qd7+ Kf6 41.Qd6+ Qxd6 42.Rxd6+ Kg5 43.Rxc6 Rd8 44.Rc5 Rd1+ 45.Kh2 Rd2 46.Rxb5 e4 47.Kg1 Kf4 48.g3+ Kg5 49.g4 Kg6 50.Rxf5 Rxb2 51.Kg2 Rb3 52.Rf4 Rxc3 53.Rxe4 Rxa3 54.Rb4 Ra1 55.Rb8 Kg5 56.Ra8 a3 57.Ra5+ Kf4 58.g5 a2 59.h4 Kg4 60.Ra4+ Kh5 61.f3 Kg6 62.Ra6+ Kf5 63.g6 Rb1 64.Rxa2 Kxg6 65.Ra6+ Kh5 66.Ra4 Rc1 67.Kg3 Rg1+ 68.Kh2 Rb1 69.Re4 Ra1 70.Kh3 Rh1+ 71.Kg3 Rg1+ 72.Kf2 Ra1 73.Kg3 Rg1+ 74.Kf2 Ra1 75.Ke3 Ra3+ 76.Kd4 Rxf3 77.Ke5 Rf8 78.Kd4 Rd8+ 79.Ke3 Ra8 80.Kf3 Ra3+ 81.Kf4 Kxh4 82.Ke5+ Kg5 83.Re1 Ra8 84.Rg1+ Kh4 85.Ke4 Re8+ 86.Kd5 Kh5 87.Kd6 Re4 88.Kd7 Rg4 89.Kd6 Rxg1 0-1
2021.05.25 Titled Tuesday 25th May
1670509 FM Elgersma, Onno (2298) CM Bures, Vi (2119) 0-1
1.d4 d5 2.Nf3 Nf6 3.Bf4 c5 4.e3 Nc6 5.Nbd2 Qb6 6.dxc5 Qxb2 7.Rb1 Qc3 8.Bb5 e6 9.O-O Be7 10.Rb3 Qxc5 11.c4 O-O 12.cxd5 exd5 13.Ne5 Be6 14.Qf3 d4 15.Nxc6 bxc6 16.Bxc6 Rac8 17.Bb7 Bxb3 18.Nxb3 Qa3 19.Bxc8 Rxc8 20.Nxd4 Qxa2 21.Qb7 Re8 22.Nc6 Bc5 23.Ne5 Qd5 24.Qxd5 Nxd5 25.Rc1 Bb6 26.Nc4 Nxf4 27.Nxb6 Ne2+ 0-1
2021.05.18 Titled Tuesday 18th May
1677332 FM Elgersma, Onno (2298) NM Chambers, Chris L. 1/2-1/2
1.d4 f5 2.Nf3 Nf6 3.Bg5 e6 4.Nc3 d5 5.e3 Be7 6.Ne5 O-O 7.Bd3 a6 8.O-O c5 9.a4 Nc6 10.Nxc6 bxc6 11.a5 c4 12.Be2 Rb8 13.Na4 Qc7 14.f3 Bd6 15.f4 Ne4 16.Bh4 Bd7 17.Nb6 c5 18.c3 Bc6 19.b3 Nxc3 20.Qe1 Nxe2+ 21.Qxe2 cxb3 22.dxc5 Bxc5 23.Rfc1 Bxb6 24.axb6 Qxb6 25.Rxa6 Qb5 26.Qxb5 Bxb5 27.Ra3 b2 28.Rb1 Bc4 29.Be1 Rb5 30.Bc3 Rfb8 31.Be5 R8b7 32.Kf2 Kf7 33.Ke1 Rb3 34.Rxb3 Rxb3 35.Kf2 Bd3 36.Rxb2 Rxb2+ 37.Bxb2 Be4 38.Bd4 g6 39.h3 h5 40.Kg3 Bc2 41.Kh4 Bd1 42.Kg5 Be2 43.g3 Bd1 44.h4 Be2 45.Kh6 Bd1 46.Kg5 Be2 47.Kh6 Bd1 48.Kg5 1/2-1/2
2021.05.18 Titled Tuesday 18th May
1676826 FM Elgersma, Onno (2298) WGM Karnaukhova, Elmira (2319) 1-0
1.Nf3 d5 2.d4 Nf6 3.Bf4 c6 4.e3 Nbd7 5.c4 g6 6.Nc3 Bg7 7.h3 O-O 8.Be2 Re8 9.O-O Nh5 10.Bh2 e5 11.cxd5 exd4 12.exd4 cxd5 13.Nxd5 Ndf6 14.Nc7 Bd7 15.Nxa8 Qxa8 16.d5 Ne4 17.Rb1 Nc5 18.Re1 Bf5 19.Rc1 b6 20.Bb5 Rd8 21.Bc6 Qc8 22.Ne5 Bxe5 23.Bxe5 Nd3 24.Rc3 Nxe1 25.Qxe1 Bd7 26.Bxd7 Qxd7 27.d6 Qe6 28.Re3 Qxa2 29.Bc3 Qd5 30.Re8+ 1-0
2021.05.18 Titled Tuesday 18th May
1676573 FM Mazanchenko, D (2161) FM Elgersma, Onno (2298) 0-1
1.e4 c5 2.Ne2 e6 3.Nbc3 Nc6 4.d4 cxd4 5.Nxd4 a6 6.Be3 Nf6 7.f3 d5 8.exd5 exd5 9.Qd2 Bb4 10.a3 Ba5 11.b4 Bc7 12.Be2 O-O 13.O-O Re8 14.Bf4 Bb6 15.Be3 Rxe3 16.Qxe3 Bxd4 17.Qxd4 Nxd4 18.Bd3 Nc6 19.Rad1 Ne5 20.Be2 Be6 21.Kh1 Rc8 22.Nb1 Rxc2 23.Rfe1 Ng6 24.b5 Nf4 25.bxa6 bxa6 26.Bxa6 Qb6 27.Bf1 Qf2 28.a4 Nh3 29.Re2 Qg1# 0-1
2021.05.18 Titled Tuesday 18th May
1677110 WFM Shvedova, Alexandra (1976) FM Elgersma, Onno (2298) 0-1
1.e4 c5 2.Ne2 e6 3.g3 Nc6 4.Bg2 Nf6 5.c3 d5 6.exd5 exd5 7.d4 cxd4 8.Nxd4 Bc5 9.O-O O-O 10.Nb3 Bb6 11.Bg5 Be6 12.Na3 h6 13.Bf4 Ne4 14.Nb5 a6 15.N5d4 Bd7 16.Re1 Re8 17.Qd3 Nxd4 18.Nxd4 Nc5 19.Qd2 Bg4 20.Rxe8+ Qxe8 21.Bxd5 Rd8 22.Bxb7 Nxb7 23.Re1 Qd7 24.Qe3 Bxd4 25.cxd4 Qxd4 26.Qe7 Qd7 27.Qe5 Bh3 28.Qh5 Bg4 29.Qh4 Bf3 30.Be5 Qd2 31.Rf1 Qe2 32.Bd4 Qe4 33.Qxe4 Bxe4 34.Bb6 Rd2 35.Re1 Bf3 36.b3 h5 37.h4 Nd6 38.Bc5 Ne4 39.Bd4 Rxd4 0-1
2021.05.18 Titled Tuesday 18th May
1676343 FM Elgersma, Onno (2298) CM Dovbnia, Nikita (1882) 0-1
1.d4 d5 2.Nf3 Nf6 3.Bf4 c5 4.e3 Nc6 5.c3 Qb6 6.Qb3 c4 7.Qc2 Bf5 8.Qc1 e6 9.Nbd2 Be7 10.h3 h6 11.Be2 O-O 12.O-O Rfc8 13.b3 cxb3 14.axb3 Nb4 15.c4 Nd3 16.Qd1 Nxf4 17.exf4 dxc4 18.bxc4 Rd8 19.c5 Qc7 20.Qb3 Nd5 21.Qxb7 Qxb7 0-1
2021.05.18 Titled Tuesday 18th May
1677628 FM Pasti, Aron (2296) FM Elgersma, Onno (2298) 0-1
1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 5.Nc3 a6 6.Be3 Nf6 7.Qf3 h5 8.O-O-O Bb4 9.Nxc6 bxc6 10.Bd4 Ng4 11.h3 e5 12.hxg4 exd4 13.Rxd4 Qg5+ 14.Kb1 Rb8 15.Rxh5 Rxh5 16.gxh5 Qe5 17.Qd3 a5 18.Ne2 Bc5 19.f4 Qxh5 20.Rc4 Ba6 21.Rxc5 Qxc5 22.Qxa6 Qf2 23.Nc1 Qd4 24.b3 Qxe4 25.Qxa5 Qxf4 26.Bc4 Qd4 27.Qe1+ Kf8 28.Qh1 Kg8 29.Bd3 g6 30.Ne2 Qe5 31.Qh3 d5 32.a4 c5 33.Qg3 Qxg3 34.Nxg3 c4 35.Be2 cxb3 36.a5 f5 0-1
2021.05.18 Titled Tuesday 18th May
1675917 GM Hansen, Eric (2606) FM Elgersma, Onno (2298) 1-0
1.Nf3 d6 2.d4 Nf6 3.Nc3 Nc6 4.e4 g6 5.d5 Nb8 6.h3 Bg7 7.Be2 O-O 8.O-O c6 9.Re1 a6 10.a4 b6 11.dxc6 Nxc6 12.Bc4 Bb7 13.Bg5 h6 14.Bh4 Rc8 15.Qe2 Nb4 16.Rad1 Nxc2 17.Bxf7+ Rxf7 18.Qxc2 Qc7 19.Qb3 g5 20.Bxg5 hxg5 21.Nxg5 Qc4 22.Qxb6 Ba8 23.Nxf7 Qxf7 24.Qxa6 Rf8 25.Re3 Nh5 26.Rf3 Qe8 27.Qb5 Qg6 28.Qc4+ Kh7 29.Rxf8 Bxf8 30.Qc8 Nf4 31.g3 Bxe4 32.Nxe4 Ne2+ 33.Kh2 Qxe4 34.Qxf8 1-0
2021.05.18 Titled Tuesday 18th May
1675719 FM Zhou, Qiyu (2229) FM Elgersma, Onno (2298) 0-1
1.e4 Nc6 2.d4 d6 3.Nc3 Nf6 4.f3 g6 5.Be3 Bg7 6.Qd2 e5 7.Nge2 exd4 8.Nxd4 Bd7 9.O-O-O a6 10.g4 b5 11.Kb1 b4 12.Nce2 Ne5 13.Bh6 Bxh6 14.Qxh6 c5 15.Nb3 Qe7 16.Bg2 a5 17.Nf4 a4 18.Nc1 a3 19.g5 axb2 20.Ncd3 Be6 21.gxf6 Qxf6 22.Nxe6 Qxe6 23.Nxb2 Qxa2+ 24.Kc1 Qa1+ 25.Kd2 Qxb2 26.Ke2 Ra2 27.Rxd6 Qxc2+ 28.Rd2 Qd3+ 29.Ke1 Qxd2+ 30.Qxd2 Rxd2 31.Kxd2 Ke7 32.Kc2 Rd8 33.Ra1 c4 34.Ra7+ Rd7 35.Ra4 b3+ 36.Kb2 Rd2+ 0-1
2021.05.18 Titled Tuesday 18th May
1676276 FM Elgersma, Onno (2298) FM Lopez Gracia, F (2299) 0-1
1.d4 Nf6 2.Nf3 e6 3.Bg5 c5 4.e3 b6 5.c3 h6 6.Bh4 Bb7 7.Nbd2 cxd4 8.exd4 Be7 9.a4 d6 10.a5 bxa5 11.Qa4+ Nbd7 12.Qxa5 Qxa5 13.Rxa5 Bd8 14.Ra3 d5 15.Bd3 Bb6 16.O-O O-O 17.Rfa1 Ne4 18.Be7 Rfe8 19.Bb4 f5 20.Bb5 Nef6 21.Ne5 Rad8 22.Nxd7 Nxd7 23.Bxd7 Rxd7 24.Nf3 Ra8 25.Ne5 Rc7 26.Ba5 Bxa5 27.Rxa5 a6 28.R1a4 Kf8 29.Rb4 Bc8 30.Rb6 Rb7 31.Rxb7 Bxb7 32.Nd7+ Ke7 33.Nc5 Bc8 34.f4 Kd6 35.Kf2 Kc6 36.b4 Kb6 37.Ra2 Ra7 38.h4 Kb5 39.Ke3 Kc4 40.Kd2 g5 41.hxg5 hxg5 42.fxg5 Rg7 43.Nd3 Rxg5 44.Nf4 Rg4 45.Ke3 Kxc3 46.Ne2+ Kxb4 47.Rb2+ Ka5 48.Rb8 Bd7 49.g3 Bb5 50.Nf4 Rxg3+ 51.Kf2 Rg4 52.Nxe6 Re4 53.Ng7 Rxd4 54.Ke3 Re4+ 55.Kf3 f4 56.Nf5 Rb4 57.Nd6 Be2+ 0-1
2021.05.18 Titled Tuesday 18th May
1677558 FM Elgersma, Onno (2298) FM Dang, H (2363) 0-1
1.d4 Nf6 2.Nf3 g6 3.Bg5 Bg7 4.e3 O-O 5.Nbd2 d6 6.Be2 Nbd7 7.O-O e5 8.c3 h6 9.Bh4 g5 10.Bg3 Nh5 11.Bc4 Nxg3 12.hxg3 c6 13.e4 Qe7 14.Re1 Nb6 15.Bb3 Be6 16.Nf1 Rfd8 17.Ne3 d5 18.exd5 Nxd5 19.Nxd5 Bxd5 20.dxe5 Bxb3 21.Qxb3 Rd5 22.Rad1 Rad8 23.Rxd5 Rxd5 24.e6 fxe6 25.Qc4 Kf7 26.Qe4 Qd6 27.g4 Rd1 28.g3 Qd5 29.Qxd5 Rxe1+ 30.Nxe1 exd5 31.f4 b5 32.Nf3 gxf4 33.gxf4 a5 34.Kf2 b4 35.cxb4 axb4 36.b3 c5 37.Ke3 Ke6 38.f5+ Kd6 39.Kf4 Bb2 40.Ke3 c4 41.Ke2 Kc5 42.Kd2 Bf6 43.Ke2 Kd6 44.Ke3 Kc5 45.Ke2 Be7 46.Ke3 Bg5+ 47.Ke2 Bf4 48.Nh4 Kd4 49.Ng6 Bg5 50.Nf8 Kc3 51.Ne6 Bf6 52.Nc5 Kc2 53.Ke3 d4+ 54.Kf3 d3 55.Ne4 cxb3 56.axb3 d2 57.Nxd2 Kxd2 58.Ke4 Kc3 59.Kd5 Kxb3 60.Ke6 Bg5 61.f6 Bxf6 62.Kxf6 Kc4 63.Kg6 b3 64.Kxh6 b2 65.g5 b1=Q 66.g6 Kd5 0-1
2021.05.11 Titled Tuesday 11th May
1681155 WFM Shvedova, Alexandra (1976) FM Elgersma, Onno (2298) 0-1
1.e4 c5 2.Ne2 e6 3.d4 cxd4 4.Nxd4 Nc6 5.Nc3 a6 6.Be3 Nf6 7.f3 d5 8.Nxc6 bxc6 9.Qd2 Be7 10.O-O-O Rb8 11.g4 Qa5 12.g5 Nd7 13.Bh3 Ne5 14.Bf1 Nxf3 15.Qg2 Rxb2 16.Qxf3 Qxc3 17.Bd3 Rxa2 18.Rdf1 Ra1# 0-1
2021.05.11 Titled Tuesday 11th May
1680981 FM Elgersma, Onno (2298) IM Mohota, N (2195) 1-0
1.Nf3 f5 2.d4 g6 3.h4 Nf6 4.Bg5 Bg7 5.Bxf6 Bxf6 6.h5 d6 7.e3 Nc6 8.c4 e5 9.Nc3 e4 10.Nd2 Ne7 11.Nd5 Nxd5 12.cxd5 c6 13.dxc6 bxc6 14.Rc1 Qb6 15.Nc4 Qb4+ 16.Qd2 Qxd2+ 17.Kxd2 Ke7 18.Na5 c5 19.dxc5 Bxb2 20.cxd6+ Kd7 21.Bb5+ Ke6 22.Rc7 Rb8 23.d7 Bxd7 24.Bxd7+ Kd6 25.Rxa7 Ba3 26.Nc4+ Kd5 27.Nxa3 Rb2+ 28.Kc3 Rxa2 29.Rd1+ Ke5 30.Ra5+ Kf6 31.Bb5 Rc8+ 32.Bc4 Rxf2 33.hxg6 hxg6 34.Rd6+ Kg5 35.Raa6 Kh4 36.Rxg6 Rf1 37.Rg7 1-0
2021.05.11 Titled Tuesday 11th May
1682006 FM Elgersma, Onno (2298) IM Banawa, Joe (2404) 0-1
1.Nf3 Nf6 2.d4 g6 3.Bg5 Bg7 4.Nbd2 d6 5.e3 Nbd7 6.Be2 b6 7.O-O Bb7 8.a4 h6 9.Bh4 a6 10.c3 O-O 11.Bd3 e5 12.e4 Re8 13.Re1 Qc8 14.b4 Nh5 15.Bg3 Nxg3 16.hxg3 exd4 17.cxd4 c5 18.Rc1 Qd8 19.bxc5 bxc5 20.d5 Rb8 21.Nc4 Nb6 22.Nxb6 Qxb6 23.Nd2 Qc7 24.Nc4 Bc8 25.Rb1 Bd7 26.Qc2 Bd4 27.Qd2 Kg7 28.Qf4 Rxb1 29.Rxb1 Re7 30.Qxd6 Qxd6 31.Nxd6 Bxa4 32.Bxa6 Bc2 33.Re1 f5 34.Nc8 Re8 35.Nd6 Ra8 36.Bb7 Rd8 37.e5 Bxe5 38.Rxe5 Rxd6 39.Re7+ Kf6 40.Rc7 Rb6 41.Rc6+ Rxc6 42.dxc6 Be4 43.f3 Bd5 44.Ba8 Ke7 45.c7 Be6 46.Bb7 c4 47.c8=Q Bxc8 48.Bxc8 c3 0-1
2021.05.11 Titled Tuesday 11th May
1682321 FM Elgersma, Onno (2298) CM Bures, Vi (2119) 1-0
1.e4 e5 2.Nf3 Nc6 3.g3 Nf6 4.Nc3 d5 5.exd5 Nxd5 6.d3 Nxc3 7.bxc3 Bc5 8.Bg2 O-O 9.O-O Bg4 10.Rb1 Bb6 11.h3 Bh5 12.Qe1 Re8 13.Qe4 Bg6 14.Qc4 e4 15.dxe4 Bxe4 16.Ng5 Bg6 17.Bf4 Ne5 18.Qb3 c6 19.Rbd1 Qc8 20.Rfe1 Bc7 21.Ne4 h6 22.Nc5 b6 23.Ne4 Nd7 24.Nd6 Bxd6 25.Bxd6 Nc5 26.Bxc5 bxc5 27.Qc4 Bxc2 28.Rc1 Bg6 29.Qxc5 Rxe1+ 30.Rxe1 Qf5 31.Qxf5 Bxf5 32.Bxc6 Rc8 33.Re8+ Rxe8 34.Bxe8 Kf8 35.Bc6 Ke7 36.Bg2 Kd6 37.Kf1 Kc5 38.Ke1 Kc4 39.Kd2 Be6 40.Bf1+ Kc5 41.a3 a5 42.Ke3 g5 43.f4 gxf4+ 44.gxf4 f6 45.h4 Bf7 46.Bd3 Be6 47.Kf3 Bf7 48.Kg4 h5+ 49.Kf5 Be8 50.Kxf6 Kd5 51.Kg5 Ke6 52.Bf5+ Kd6 53.Bg6 Bd7 54.f5 1-0
2021.05.11 Titled Tuesday 11th May
1680300 GM Keymer, Vincent (2591) FM Elgersma, Onno (2298) 1-0
1.Nf3 d5 2.e3 Nf6 3.c4 e6 4.Nc3 c5 5.cxd5 exd5 6.d4 Nc6 7.Bb5 Bd6 8.dxc5 Bxc5 9.O-O O-O 10.b3 Bg4 11.Bb2 Re8 12.Rc1 Bd6 13.h3 Bh5 14.Ne2 Ne4 15.Ned4 Qf6 16.Bxc6 bxc6 17.Rxc6 Rac8 18.Rxc8 Rxc8 19.Qe2 Bxf3 20.Nxf3 Qg6 21.Rd1 Rc5 22.Bd4 Rc7 23.Bb2 Rc5 24.b4 Rc6 25.Rxd5 Qe6 26.Qd3 Bxb4 27.Rd8+ Bf8 28.Nd4 Qf6 29.Rxf8+ Kxf8 30.Qxe4 Rc8 31.Qb7 Kg8 32.Qxc8+ 1-0
2021.05.11 Titled Tuesday 11th May
1680845 CM Nunez, Joe (2196) FM Elgersma, Onno (2298) 1/2-1/2
1.Nf3 d5 2.g3 c5 3.Bg2 Nf6 4.O-O e6 5.d4 Be7 6.c4 O-O 7.cxd5 exd5 8.Nc3 Nc6 9.Bg5 c4 10.Ne5 Be6 11.Rc1 h6 12.Bxf6 Bxf6 13.e3 Nxe5 14.dxe5 Bxe5 15.Nxd5 Rc8 16.b3 c3 17.f4 Bxd5 18.Qxd5 Bf6 19.Qxd8 Rfxd8 20.Bxb7 Rc7 21.Be4 Rd2 22.Rf2 g6 23.Rc2 Rcd7 24.Kg2 h5 25.h3 Kg7 26.g4 hxg4 27.hxg4 Bh4 28.Re2 Be1 29.Kf3 Rxe2 30.Rxe2 Bd2 31.g5 a5 32.Bc2 Rb7 33.a3 Bc1 34.a4 Rd7 35.e4 Rd4 36.Rf2 Bd2 37.Ke2 Kf8 38.Rf3 Ke7 39.Bd3 Kd6 40.Kd1 Kc5 41.Kc2 Kb4 42.f5 Bxg5 43.fxg6 fxg6 44.Rg3 Bf4 45.Rxg6 Rd7 46.Rf6 Be3 47.Rf5 Bd4 48.Rb5+ Ka3 49.Rd5 Rxd5 50.exd5 Be5 51.Bb5 Kb4 52.Bc4 Bd6 53.Kd3 Bc5 54.Kc2 Bd6 55.Bd3 Be5 56.Bc4 Kc5 57.Kd3 Kb4 58.Kc2 1/2-1/2
2021.05.11 Titled Tuesday 11th May
1681357 FM Elgersma, Onno (2298) FM Gabdushev, R (2256) 1-0
1.Nf3 Nc6 2.c4 d6 3.e3 e5 4.d4 Be7 5.Nc3 Nf6 6.Be2 O-O 7.O-O h6 8.a3 a5 9.b3 Bf5 10.h3 Ne4 11.Nxe4 Bxe4 12.Bb2 Bf6 13.d5 Ne7 14.b4 Ng6 15.Nd2 Bf5 16.Qb3 b6 17.e4 Bd7 18.Bg4 Bxg4 19.hxg4 Bg5 20.Nf3 Be7 21.Nh2 Nf4 22.Qf3 g6 23.g3 Nh3+ 24.Kg2 Ng5 25.Qe2 f5 26.f4 exf4 27.gxf4 Nxe4 28.gxf5 gxf5 29.Qh5 Bf6 30.Qg6+ Kh8 31.Qxh6+ Kg8 32.Qg6+ Kh8 33.Ng4 1-0
2021.05.11 Titled Tuesday 11th May
1681639 FM Karacsonyi, Gellert (2327) FM Elgersma, Onno (2298) 1-0
1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 5.Nc3 a6 6.Be3 Nf6 7.f4 Bb4 8.Bd3 d5 9.exd5 exd5 10.O-O O-O 11.h3 Re8 12.Qf3 Bc5 13.Nce2 Qb6 14.c3 Qxb2 15.Kh1 Bf8 16.Nxc6 bxc6 17.Bd4 Ne4 18.c4 Qb4 19.cxd5 cxd5 20.Bxe4 dxe4 21.Qe3 Qc4 22.Rfc1 Qd3 23.Rc7 Be6 24.a4 Rac8 25.Rac1 Rxc7 26.Rxc7 Bd6 27.Rc6 Bf8 28.Kh2 Bd7 29.Rb6 Bxa4 30.Nc3 Bb5 31.Nxb5 axb5 32.Rb7 b4 33.Kg3 Rd8 34.Bb6 Rc8 35.Bd4 Rc3 36.Kf2 Rc2+ 37.Kg3 Re2 38.Qxd3 exd3 39.Rb8 h6 40.Bc5 d2 41.Rxf8+ Kh7 42.Rd8 b3 43.Ba3 Re3+ 44.Kf2 b2 45.Bxb2 Rb3 46.Rxd2 1-0
2021.05.11 Titled Tuesday 11th May
1680630 FM Elgersma, Onno (2298) WFM Markelova, L (2179) 0-1
1.Nf3 d5 2.d4 Nf6 3.Bf4 c5 4.e3 Nc6 5.c3 Qb6 6.Qb3 c4 7.Qc2 Bf5 8.Qc1 e6 9.Nbd2 h6 10.h3 Be7 11.Be2 O-O 12.O-O Rfc8 13.Ne5 Nxe5 14.Bxe5 Qd8 15.b3 b5 16.a4 a6 17.b4 a5 18.axb5 axb4 19.cxb4 Bxb4 20.Rxa8 Rxa8 21.Nxc4 dxc4 22.Qxc4 Qa5 23.Bf3 Be4 24.Bxe4 Nxe4 25.Qc6 Nc3 26.b6 Qa6 27.Kh2 Rc8 28.Qf3 Qxf1 29.b7 Rf8 30.b8=Q Rxb8 31.Bxb8 Ne2 32.h4 Qg1+ 33.Kh3 Be7 34.Kg4 Nc3 35.Be5 Nd5 36.e4 Nf6+ 37.Bxf6 Bxf6 38.e5 Be7 39.d5 exd5 40.Qxd5 Qxf2 41.Qa8+ Kh7 42.Qe4+ g6 43.h5 Qf5+ 44.Qxf5 gxf5+ 45.Kxf5 Kg7 46.e6 f6 47.g4 Bd6 48.Ke4 Be5 49.Kd5 Kf8 50.Ke4 Ke7 51.Kf5 Bd4 52.Kg6 Be3 53.Kf5 Bg5 54.Kg6 Kxe6 55.Kg7 Ke5 56.Kg6 Kf4 0-1
2021.05.04 Titled Tuesday 4th May
1688346 FM Elgersma, Onno (2298) IM Rzayev, B (2333) 1-0
1.Nf3 Nc6 2.e4 e5 3.Bb5 a6 4.Ba4 Nf6 5.d3 b5 6.Bb3 Bc5 7.Nc3 d6 8.a3 Bg4 9.Be3 Nd4 10.Bxd4 Bxd4 11.h3 Bxf3 12.Qxf3 O-O 13.O-O c6 14.Rab1 g6 15.Ne2 Bb6 16.a4 Kg7 17.Ra1 Nh5 18.g4 Nf6 19.Qg3 Qe7 20.Kg2 d5 21.axb5 axb5 22.Rxa8 Rxa8 23.f4 exf4 24.Nxf4 g5 25.Nh5+ Nxh5 26.gxh5 Rf8 27.Qf3 dxe4 28.dxe4 f6 29.Qf5 Re8 30.h6+ Kxh6 31.Qxf6+ Qxf6 32.Rxf6+ Kg7 33.Rxc6 Bd4 34.c3 Be3 35.Bd5 Rf8 36.Rc7+ Kg6 37.e5 Rf2+ 38.Kg3 h6 39.Be4+ Kh5 40.Rg7 Rf6 41.exf6 1-0
2021.05.04 Titled Tuesday 4th May
1688096 WIM Vargas, Ga (2170) FM Elgersma, Onno (2298) 0-1
1.d4 d5 2.Nf3 e6 3.Bg5 Nf6 4.Nbd2 c5 5.c3 Nc6 6.e3 Bd6 7.Bd3 O-O 8.O-O e5 9.dxc5 Bxc5 10.e4 dxe4 11.Nxe4 Be7 12.Qe2 Nd5 13.Bxe7 Qxe7 14.Rfe1 Nf4 15.Qc2 Nxd3 16.Qxd3 Kh8 17.Qd6 Qxd6 18.Nxd6 f6 19.Rad1 Bg4 20.h3 Bxf3 21.gxf3 Rab8 22.Rd2 Kg8 23.Red1 Rfd8 24.b4 a6 25.a4 Kf8 26.Kg2 Ne7 27.b5 axb5 28.axb5 Ng6 29.c4 Nf4+ 30.Kh2 Ne6 31.b6 Nd4 32.Kg2 Rxd6 0-1
2021.05.04 Titled Tuesday 4th May
1687841 FM Elgersma, Onno (2298) FM Chasin, Nico (2276) 0-1
1.Nf3 Nf6 2.d4 e6 3.Bg5 c5 4.e3 Be7 5.Nbd2 b6 6.Bd3 h6 7.Bh4 Bb7 8.c3 O-O 9.O-O Nc6 10.a3 Rc8 11.e4 d5 12.e5 Nd7 13.Bg3 Ndb8 14.b4 cxd4 15.cxd4 a5 16.b5 Na7 17.a4 Rc3 18.Qe2 Qc7 19.Nb1 Rb3 20.Ra2 Rc8 21.Rc2 Qd8 22.Rfc1 Rb4 23.Nc3 Rb3 24.h4 Ba3 25.Ra1 Rbxc3 26.Ng5 hxg5 27.hxg5 Bf8 28.Rxc3 Rxc3 29.g6 fxg6 30.Bxg6 Qg5 0-1
2021.05.04 Titled Tuesday 4th May
1687619 FM Elgersma, Onno (2298) WFM De Leon, P (2004) 1-0
1.e4 e6 2.Nf3 d5 3.Nc3 c5 4.Qe2 Nf6 5.exd5 Nxd5 6.g3 Be7 7.Bg2 O-O 8.O-O Nc6 9.Ne4 Nf6 10.d3 Nd4 11.Nxd4 cxd4 12.a4 Rb8 13.Nd2 Nd5 14.Nc4 b6 15.Qe5 Bb7 16.Qxd4 Bf6 17.Qg4 Nb4 18.Bf4 Bxg2 19.Kxg2 Qd5+ 20.Qf3 Rbd8 21.Rac1 Qxf3+ 22.Kxf3 1-0
2021.04.27 Titled Tuesday 27th Apr
1691905 FM Elgersma, Onno (2298) WFM Sviridova, Vlada (2144) 1-0
1.d4 d5 2.Nf3 Nf6 3.Bf4 c5 4.e3 Nc6 5.c3 e6 6.Nbd2 Bd6 7.Bb5 O-O 8.Bg3 Be7 9.O-O Qb6 10.Bxc6 bxc6 11.dxc5 Bxc5 12.a3 Be7 13.b4 c5 14.Nb3 Ba6 15.Re1 Ne4 16.Be5 f6 17.bxc5 Nxc5 18.Nxc5 Bxc5 19.Bd4 Rac8 20.Rb1 Qc6 21.Bxc5 Qxc5 22.Nd4 Rfe8 23.Qg4 Qe7 24.e4 dxe4 25.Rxe4 e5 26.Nf5 Qc7 27.Ra4 Bd3 28.Rd1 Bxf5 29.Qxf5 Qxc3 30.Rxa7 Rc7 31.Rxc7 Qxc7 32.h3 Ra8 33.Qe6+ Kf8 34.g3 Rd8 35.Rxd8+ Qxd8 36.Qb3 Qd4 37.a4 Qa1+ 38.Kg2 Qc1 39.a5 Qc6+ 40.Qf3 Qa6 41.Qa3+ Kf7 42.Qc5 Ke6 43.h4 Kd7 44.Qd5+ Kc8 45.Qg8+ Kc7 46.Qxg7+ Kb8 47.Qxh7 Qxa5 48.Qe7 Qb6 49.Qd7 Ka8 50.Qd5+ 1-0
2021.04.27 Titled Tuesday 27th Apr
1692430 FM Elgersma, Onno (2298) FM Weetik, V (2423) 0-1
1.d4 Nf6 2.Nf3 g6 3.Bg5 Bg7 4.e3 O-O 5.Nbd2 d5 6.Be2 Nbd7 7.O-O c5 8.c3 Re8 9.a4 e5 10.dxe5 Nxe5 11.Nxe5 Rxe5 12.Bf4 Re8 13.a5 a6 14.Qb3 Qd7 15.Rfd1 Qc6 16.Bf3 Be6 17.Qa3 Rad8 18.h3 Ne4 19.Nxe4 dxe4 20.Be2 h6 21.Bg3 c4 22.Rxd8 Rxd8 23.Rd1 Rxd1+ 24.Bxd1 Bf8 25.Qa4 Qd5 26.Be2 Qb5 27.Qxb5 axb5 28.f3 Bd5 29.Be5 Be7 30.Kf2 Bd8 31.fxe4 Bxe4 32.Bf3 f5 33.g4 Kf7 34.gxf5 gxf5 35.Bh5+ Ke6 36.Bf4 Bxa5 37.Bxh6 b4 38.Bg7 bxc3 39.bxc3 b5 40.Be2 Kd5 41.h4 b4 42.cxb4 Bxb4 43.h5 Bc5 44.h6 f4 45.Bd4 Bxd4 46.exd4 Kxd4 47.Bh5 c3 48.Bd1 c2 49.Bxc2 Bxc2 50.Kf3 Ke5 51.Kg4 Bh7 52.Kf3 Kf5 0-1
2021.04.27 Titled Tuesday 27th Apr
1691690 FM Bazeev, G (2398) FM Elgersma, Onno (2298) 1-0
1.e4 c5 2.Nf3 e6 3.Nc3 a6 4.g3 Nc6 5.Bg2 Nf6 6.O-O Be7 7.d3 d5 8.exd5 exd5 9.Bg5 O-O 10.Nd2 Be6 11.a4 Rc8 12.Nb3 d4 13.Bxf6 Bxf6 14.Ne4 Bxb3 15.cxb3 Nb4 16.a5 Be7 17.Nd2 Nxd3 18.Nc4 Nb4 19.Bxb7 Rb8 20.Bg2 Qc7 21.Qf3 Bf6 22.Rad1 Rfe8 23.h4 Qe7 24.h5 h6 25.Qf5 Rbc8 26.Kh2 Qe6 27.Bh3 Qxf5 28.Bxf5 Rb8 29.Rfe1 Kf8 30.f4 Rxe1 31.Rxe1 Re8 32.Rxe8+ Kxe8 33.Kg2 Be7 34.Kf3 Kd8 35.Ke4 Kc7 36.Bh7 Bf6 37.Bg8 Kc6 38.Bxf7 Kc7 39.g4 Be7 40.Bg6 Bf6 41.Kf3 d3 42.Ke3 Bd4+ 43.Kd2 Bf2 44.Bxd3 Bg3 45.Ke3 Bxf4+ 46.Kxf4 Nxd3+ 47.Kf5 Nf2 48.Ne3 Kc6 49.Kg6 Nd3 50.Kxg7 Ne5 51.Kxh6 c4 52.bxc4 1-0
2021.04.27 Titled Tuesday 27th Apr
1692725 FM Elgersma, Onno (2298) WIM Jakubowska, Anna (2073) 1-0
1.Nf3 d5 2.b3 Nf6 3.Bb2 c5 4.e3 Nc6 5.Bb5 Bg4 6.h3 Bxf3 7.Qxf3 e6 8.O-O Be7 9.Bxc6+ bxc6 10.d3 O-O 11.Nd2 Rb8 12.Be5 Bd6 13.Bc3 Nd7 14.e4 Be5 15.Bxe5 Nxe5 16.Qg3 Ng6 17.f4 Qh4 18.Qxh4 Nxh4 19.Rae1 Rfe8 20.g4 h6 21.Kh2 Ng6 22.Kg3 Nf8 23.h4 Rb6 24.h5 Ra6 25.a4 Rb6 26.g5 Nh7 27.Kh4 Rb7 28.Rg1 Kh8 29.Ref1 Rd7 30.g6 fxg6 31.Rxg6 Nf6 32.e5 Ng8 33.Kg4 Rf7 34.Nf3 Ref8 35.Nh4 Re7 36.Rf2 Rd8 37.Re2 c4 38.f5 cxd3 39.cxd3 exf5+ 40.Nxf5 Rb7 41.e6 Re8 42.e7 Rexe7 43.Nxe7 Nxe7 44.Rge6 Ng8 45.Re8 Rxb3 46.Ra8 Kh7 47.Kf5 Rxd3 48.Ree8 g6+ 49.hxg6+ 1-0
2021.04.27 Titled Tuesday 27th Apr
1693003 FM Elgersma, Onno (2298) FM Kanyamarala, Tarun (2369) 0-1
1.Nf3 Nf6 2.c4 c5 3.e3 g6 4.b3 Bg7 5.Bb2 O-O 6.Be2 Nc6 7.O-O Re8 8.d4 cxd4 9.Nxd4 d5 10.Nxc6 bxc6 11.Nc3 e5 12.Na4 Bf8 13.Rc1 Bd7 14.Bf3 Qa5 15.Qc2 Bf5 16.Qe2 Rac8 17.Rfd1 h5 18.h3 d4 19.e4 Be6 20.Rb1 Rb8 21.Bc1 Nd7 22.Bg5 Be7 23.Bh6 Kh7 24.Bd2 Bb4 25.Bc1 Nc5 26.Nxc5 Qxc5 27.Bxh5 Rh8 28.Bg4 Qe7 29.Bxe6 Qxe6 30.Qg4 f5 31.Qf3 Kg7 32.Bd2 Be7 33.Re1 Rbf8 34.Qe2 f4 35.Qf3 g5 36.Qg4 Qxg4 37.hxg4 f3 38.gxf3 Rh3 39.Kg2 Rhxf3 40.Re2 d3 41.Rbe1 dxe2 42.Rxe2 Bc5 43.Be1 Bd4 44.Kg1 Rg3+ 45.Kf1 Rxg4 0-1
2021.04.27 Titled Tuesday 27th Apr
1692492 FM Gombocz, Ferenc Jr. (2280) FM Elgersma, Onno (2298) 1-0
1.c4 e6 2.g3 d5 3.Bg2 Nf6 4.Nf3 Be7 5.O-O O-O 6.d4 dxc4 7.Ne5 Nc6 8.Nxc6 bxc6 9.Na3 Bxa3 10.bxa3 Ba6 11.a4 Rb8 12.Ba3 Re8 13.Bxc6 Bb7 14.Bxe8 Qxe8 15.Qc2 Qc6 16.f3 Qd5 17.Rfd1 Qh5 18.Qxc4 Bd5 19.Qxc7 Re8 20.Qf4 Qh3 21.e4 Bc4 22.Rac1 Nh5 23.Qg4 1-0
2021.04.27 Titled Tuesday 27th Apr
1691486 FM Elgersma, Onno (2298) Bugayev, Vladimir 1-0
1.Nf3 c5 2.b3 g6 3.Bb2 Nf6 4.e3 Bg7 5.Be2 Nc6 6.O-O O-O 7.d4 cxd4 8.Nxd4 d6 9.c4 Bd7 10.Nd2 a5 11.N2f3 a4 12.Rb1 a3 13.Ba1 Nb4 14.Qd2 Qa5 15.Bd3 Nxd3 16.Qxd3 e5 17.b4 Qc7 18.Rbc1 e4 19.Qb3 exf3 20.Nxf3 Be6 21.Nd4 Ne4 22.Nb5 Qe7 23.Bxg7 Kxg7 24.Qd3 d5 25.cxd5 Rfd8 26.Qxe4 Rxd5 27.Nd4 Qd6 28.Rfd1 Rd8 29.h3 Kg8 30.b5 Bf5 31.Qf3 Bd7 32.Re1 Bxb5 33.Nxb5 Rxb5 34.Rcd1 Rd5 35.Rc1 b5 36.Rb1 b4 37.Qe4 Rb8 38.Qc4 Qc5 39.Qb3 1-0
2021.04.27 Titled Tuesday 27th Apr
1692259 WGM Sikorova, O (2215) FM Elgersma, Onno (2298) 0-1
1.c4 e6 2.g3 d5 3.Bg2 Nf6 4.Nf3 d4 5.O-O Nc6 6.e3 e5 7.exd4 exd4 8.d3 Be7 9.Na3 O-O 10.Nc2 a5 11.b3 h6 12.a3 Bg4 13.h3 Bh5 14.Re1 Qd7 15.Bd2 Bg6 16.Bf4 Rfe8 17.Ne5 Nxe5 18.Bxe5 Bc5 19.Bxf6 gxf6 20.Qd2 Bf8 21.f4 h5 22.Kh2 c6 23.Bf3 Bh6 24.h4 Bf8 25.Be4 Rad8 26.Bxg6 fxg6 27.Qg2 Qf5 28.Qd2 Qg4 29.b4 axb4 30.axb4 c5 31.bxc5 Bxc5 32.Kg2 Kg7 33.Rxe8 Rxe8 34.Re1 Rxe1 35.Nxe1 Qd7 36.Qe2 b5 37.cxb5 Qxb5 38.Nf3 Qc6 39.Kf2 Qd7 40.Nd2 Qh3 41.Nf3 Qd7 42.Qe4 Ba7 43.Qa8 Kh7 44.Nd2 Kg7 45.Ne4 Bb6 46.Kf3 Bd8 0-1
2021.04.27 Titled Tuesday 27th Apr
1692071 GM Iniyan, P (2506) FM Elgersma, Onno (2298) 1-0
1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 a6 5.Nc3 Nc6 6.Be3 Nf6 7.Be2 Qc7 8.O-O Bb4 9.Na4 Be7 10.c4 O-O 11.f3 d6 12.Rc1 Bd7 13.Nc3 Ne5 14.b3 Rac8 15.Qe1 Rfe8 16.Qf2 Qa5 17.g4 h6 18.Rfd1 b5 19.cxb5 Rxc3 20.Bd2 Qxa2 21.Bxc3 Qa3 22.bxa6 d5 23.Nc2 Qd6 24.Bb4 Qb8 25.Bxe7 Rxe7 26.a7 Qa8 27.Qc5 Re8 28.Nd4 dxe4 29.Qxe5 exf3 30.Bxf3 Qxa7 31.Qc5 Qa2 32.Ra1 Qb2 33.Qc2 Qxc2 34.Nxc2 e5 35.h3 e4 36.Be2 e3 37.Rd3 Be6 38.Rxe3 Rc8 39.Nd4 Bd5 40.Bf3 Bxf3 41.Rxf3 Ne4 42.Nf5 Kf8 43.Re3 Ng5 44.b4 Rb8 45.b5 Ne6 46.Rb1 g6 47.Nd6 Nd4 48.b6 Nc2 49.Re4 Na3 50.Rb3 Nc2 51.b7 Kg7 52.Re8 Rxe8 53.Nxe8+ 1-0
2021.04.13 Titled Tuesday 13th Apr
1701158 FM Elgersma, Onno (2298) IM Villegas, P (2367) 0-1
1.d4 d5 2.Nf3 Nf6 3.Bf4 e6 4.e3 c5 5.c3 Nc6 6.Nbd2 Bd6 7.Bb5 O-O 8.Bg3 Be7 9.O-O Qb6 10.a4 Nh5 11.dxc5 Qxc5 12.e4 Nxg3 13.hxg3 a6 14.Bd3 Bf6 15.Qe2 g6 16.Rfe1 Bg7 17.Rac1 dxe4 18.Nxe4 Qe7 19.Qe3 Rd8 20.Bc4 Bd7 21.Nc5 Be8 22.Red1 Rxd1+ 23.Rxd1 Rd8 24.Rxd8 Qxd8 25.Nxb7 Qd1+ 26.Kh2 a5 27.Bb5 Ne5 28.Nxe5 Bxb5 29.Nf3 Qxa4 30.Nd6 Bc6 31.Qf4 Qxf4 32.gxf4 Bxf3 33.gxf3 a4 34.Nc4 Bf8 35.Nb6 a3 36.bxa3 Bxa3 37.c4 Kf8 38.Kg3 Ke7 39.Na4 Kd6 40.Nc3 Bb2 41.Ne4+ Kc6 42.Ng5 f6 43.Nxe6 Ba3 44.f5 Kd6 45.Nf8 gxf5 46.Nxh7 Ke5 47.f4+ Ke6 0-1
2021.04.13 Titled Tuesday 13th Apr
1700138 FM Elgersma, Onno (2298) IM Rakotomaharo, Fy Antenaina (2429) 0-1
1.d4 d6 2.Nf3 g6 3.Nc3 Bg7 4.e4 Nf6 5.Be2 O-O 6.O-O e5 7.dxe5 dxe5 8.h3 Nc6 9.Be3 h6 10.a4 Be6 11.Bb5 Nh5 12.Bxc6 bxc6 13.Qxd8 Rfxd8 14.Rfd1 a5 15.Rxd8+ Rxd8 16.Rd1 Rb8 17.b3 f5 18.Ba7 Re8 19.Bc5 Nf6 20.Nxe5 Nxe4 21.Nxe4 Bxe5 22.Ng3 f4 23.Ne4 Bf5 24.f3 Bxe4 25.fxe4 Bc3 26.Rd7 Rxe4 27.Rxc7 Re6 28.Kf2 g5 29.Kf3 h5 30.Re7 Rf6 31.Re8+ Kh7 32.Ke4 g4 33.hxg4 hxg4 34.Rf8 Re6+ 35.Kxf4 Re2 36.Kg5 Rxc2 37.Rc8 Bd2+ 38.Kf5 Rxc5+ 39.Kf6 g3 40.Rc7+ Kh6 0-1
2021.04.13 Titled Tuesday 13th Apr
1699699 GM Jumabayev, R (2637) FM Elgersma, Onno (2298) 1-0
1.e4 Nc6 2.Nf3 d6 3.d4 Nf6 4.Nc3 g6 5.Bb5 a6 6.Bxc6+ bxc6 7.O-O Bg7 8.Re1 O-O 9.h3 Rb8 10.b3 Nd7 11.Rb1 c5 12.Be3 Bb7 13.Qd2 cxd4 14.Bxd4 e5 15.Ba7 Ra8 16.Be3 f5 17.Bg5 Qe8 18.Nd5 Bxd5 19.Qxd5+ Qf7 20.Qxf7+ Kxf7 21.Nd2 Ke6 22.f3 Bf6 23.Be3 Bh4 24.Red1 f4 25.Bf2 Bxf2+ 26.Kxf2 g5 27.Rbc1 h5 28.Nb1 Rg8 29.Nc3 g4 30.hxg4 hxg4 31.Nd5 Rac8 32.Rh1 g3+ 33.Ke2 Rh8 34.Nxc7+ Kf6 35.Rxh8 Rxh8 36.Nxa6 Rh2 37.Rg1 Ke6 38.Nc7+ Kf7 39.a4 Ke7 40.a5 Kd8 41.Nb5 Rh6 42.a6 Nb6 43.a7 Kd7 44.Rd1 Kc6 45.c4 Na8 46.b4 Nb6 47.Rxd6+ Rxd6 48.Nxd6 1-0
2021.04.13 Titled Tuesday 13th Apr
1700771 FM Elgersma, Onno (2298) IM Vypkhaniuk, Ihor (2412) 1-0
1.d4 Nf6 2.Nf3 e6 3.Bg5 h6 4.Bh4 c5 5.c3 b6 6.e3 Be7 7.Nbd2 cxd4 8.exd4 O-O 9.Bd3 Ba6 10.Bxa6 Nxa6 11.O-O b5 12.Qe2 Nc7 13.Ne5 Nfd5 14.Bg3 d6 15.Nc6 Qd7 16.Nxe7+ Qxe7 17.Rac1 Nb6 18.b3 Ncd5 19.c4 bxc4 20.bxc4 Nb4 21.a3 Nc6 22.Qd3 Rac8 23.Rfe1 d5 24.c5 Nd7 25.Bd6 Qf6 26.Bxf8 Nxf8 27.Nf3 Ng6 28.Qe3 Nf4 29.g3 Nh3+ 30.Kg2 Ng5 31.Nxg5 hxg5 32.Red1 Rb8 33.Rc2 a5 34.h3 a4 35.Rc3 Rb2 36.Rd2 Rb1 37.Qf3 Qg6 38.Qd3 Qxd3 39.Rdxd3 Kf8 40.h4 gxh4 41.gxh4 g6 42.Rd2 Ke7 43.Rcc2 Rb3 44.Rb2 Rxa3 45.Rb6 Kd7 46.Rb7+ Ke8 47.Rc7 Ne7 48.Rb2 Rb3 49.Ra2 Rb4 50.c6 Rc4 51.Rb2 Nxc6 52.Rb6 Nd8 53.Rxc4 dxc4 54.Ra6 Ke7 55.Rxa4 c3 56.Rc4 Kd6 57.Rxc3 Nc6 58.Rd3 Nb4 59.Rd2 Nd5 60.Kg3 Nf6 61.f4 Kd5 62.Kf3 Ne4 63.Rb2 Nd6 64.Ra2 Kxd4 65.Ra7 Kd5 66.Kg4 Kc6 67.Kg5 Kd5 68.Rd7 Kc6 69.Rxd6+ Kxd6 70.Kf6 e5 71.fxe5+ Kd5 72.Kxf7 g5 73.hxg5 Kxe5 74.g6 Kd6 75.g7 1-0
2021.04.13 Titled Tuesday 13th Apr
1700830 IM Liu, Xiangyi (2377) FM Elgersma, Onno (2298) 1-0
1.e4 c5 2.Nf3 e6 3.g3 Nc6 4.Bg2 Nf6 5.Qe2 Be7 6.O-O d5 7.e5 Nd7 8.c3 O-O 9.d4 Qb6 10.Rd1 a5 11.h4 a4 12.h5 Qa6 13.Qe1 b5 14.h6 g6 15.Bg5 Bxg5 16.Nxg5 b4 17.a3 bxc3 18.bxc3 Na5 19.Ra2 Nb3 20.Qe3 Qb6 21.Rb2 Ba6 22.Qf4 Rac8 23.dxc5 Qxc5 24.Qxa4 Na5 25.Qxd7 Nc4 26.Nxe6 Qa5 27.Qe7 1-0
2021.04.06 Titled Tuesday 6th Apr
1705029 FM Aulin Jansson, J (2215) FM Elgersma, Onno (2298) 0-1
1.e4 c5 2.Nc3 e6 3.f4 d5 4.Bb5+ Nc6 5.d3 Nf6 6.Nf3 Bd7 7.O-O a6 8.Bxc6 Bxc6 9.Ne5 Be7 10.g4 O-O 11.g5 Nd7 12.Nxc6 bxc6 13.h4 f5 14.Qe2 Kh8 15.exd5 exd5 16.h5 Qe8 17.Bd2 Bd6 18.Qh2 Rb8 19.Rae1 Qf7 20.b3 c4 21.dxc4 dxc4 22.h6 g6 23.Re2 Rfe8 24.Rfe1 cxb3 25.axb3 Nc5 26.Be3 Kg8 27.Bd4 Ne6 28.Be3 Rbd8 29.Qf2 Bb4 30.Na4 Bxe1 31.Qxe1 Qe7 32.Nb6 Nxf4 0-1
2021.04.06 Titled Tuesday 6th Apr
1704014 GM Matinian, N (2470) FM Elgersma, Onno (2298) 1-0
1.Nf3 d5 2.c4 e6 3.g3 Nf6 4.Bg2 Be7 5.O-O O-O 6.Qc2 c5 7.d4 cxd4 8.Nxd4 Nc6 9.Nxc6 bxc6 10.Nc3 Ba6 11.b3 Rc8 12.Rd1 Qa5 13.Bd2 Qb6 14.Na4 Qb7 15.Be3 Rfd8 16.Nc5 Bxc5 17.Bxc5 Nd7 18.Be7 Re8 19.Ba3 Ne5 20.Bb2 f6 21.cxd5 cxd5 22.Qd2 Nd7 23.e4 Nb6 24.e5 f5 25.h4 Nd7 26.Bd4 Nc5 27.f3 Nd7 28.h5 h6 29.Kh2 Rc7 30.Rac1 Rec8 31.Rxc7 Qxc7 32.Qf4 Qb7 33.Rd2 Nb8 34.g4 fxg4 35.fxg4 Nc6 36.Bc5 Qf7 37.Qxf7+ Kxf7 38.Bd6 Kg8 39.Bh3 Nd8 40.Rf2 Nf7 41.g5 Nxg5 42.Bg2 Re8 43.Rc2 Rc8 44.Rc5 Rxc5 45.Bxc5 Ne4 46.Bxa7 Nc3 47.a4 Bd3 48.a5 Bc2 49.b4 Nb5 50.Bc5 d4 51.Bc6 d3 52.Bxb5 d2 53.Be2 d1=Q 54.Bxd1 Bxd1 55.b5 Bf3 56.Kg3 Bd5 57.Kf4 Kf7 58.Ke3 Ke8 59.Kd4 Kd7 60.Bf8 Bf3 61.Kc5 Bxh5 62.a6 Bf3 63.b6 h5 64.b7 Bxb7 65.axb7 Kc7 66.Bxg7 h4 67.Bh6 h3 68.Bf4 1-0
2021.04.06 Titled Tuesday 6th Apr
1705306 FM Elgersma, Onno (2298) IM Arabidze, M (2437) 0-1
1.d4 d5 2.Nf3 Nf6 3.Bg5 Ne4 4.Bf4 c5 5.c3 Nc6 6.e3 Bg4 7.h3 Bh5 8.Be2 e6 9.Nbd2 f5 10.g4 Bg6 11.Ne5 Nxe5 12.Bxe5 Qd7 13.f3 Nxd2 14.Qxd2 Bd6 15.Bb5 Qxb5 16.Bxd6 c4 17.Be5 fxg4 18.hxg4 Qd7 19.f4 Be4 20.Rg1 O-O-O 21.g5 Rhg8 22.b4 h5 23.gxh6 gxh6 24.O-O-O h5 25.Qh2 Qa4 26.Kb2 h4 27.f5 Bxf5 28.Bc7 Rdf8 29.Bb8 Qc6 30.Bxa7 Kd7 31.Bc5 Ra8 32.Rxg8 Rxg8 33.Rg1 Rxg1 34.Qxg1 Qa4 35.Qg7+ Kc6 36.Qg2 Qd1 37.Qh2 Qb1+ 38.Ka3 Qc1+ 39.Qb2 Qxb2+ 40.Kxb2 h3 41.b5+ Kd7 42.e4 h2 0-1
2021.04.06 Titled Tuesday 6th Apr
1704344 FM Elgersma, Onno (2298) WGM Maltsevskaya, Aleksandra (2331) 0-1
1.d4 Nf6 2.Nf3 g6 3.Bg5 Bg7 4.e3 d6 5.Nbd2 O-O 6.Be2 Nbd7 7.O-O c5 8.c3 b6 9.a4 a6 10.h3 Bb7 11.Re1 Rc8 12.Bd3 e5 13.Ne4 Qe7 14.b4 cxb4 15.cxb4 h6 16.Nxf6+ Nxf6 17.Bxf6 Bxf6 18.dxe5 dxe5 19.e4 Qxb4 20.Qe2 a5 21.Rab1 Qd6 22.Qe3 Rc5 23.Bf1 Kg7 24.Red1 Qc7 25.Bb5 Rd8 26.Rxd8 Qxd8 27.Ne1 Bg5 28.Qe2 Qd4 29.Nd3 Bxe4 30.Nxc5 Bxb1 31.Nd7 e4 32.g3 Bd3 0-1
2021.04.06 Titled Tuesday 6th Apr
1703612 FM Elgersma, Onno (2298) GM Karthikeyan, M2 (2606) 1-0
1.d4 Nf6 2.Nf3 e6 3.Bg5 c5 4.e3 Nc6 5.Nbd2 d5 6.c3 h6 7.Bh4 Bd6 8.Bd3 O-O 9.O-O e5 10.dxc5 Bxc5 11.e4 Be7 12.Bg3 Qc7 13.exd5 Nxd5 14.Nc4 Bg4 15.h3 Bh5 16.Be4 Nb6 17.Ne3 Rfd8 18.Qb3 Kh8 19.Bh2 Bg6 20.Bxg6 fxg6 21.Ng4 1-0
2021.04.06 Titled Tuesday 6th Apr
1704906 FM Elgersma, Onno (2298) WFM Grineva, Marianna (1997) 1/2-1/2
1.d4 d6 2.Nf3 Nd7 3.Bg5 h6 4.Bh4 g5 5.Bg3 Bg7 6.e4 Nf8 7.c4 Ne6 8.h3 c5 9.d5 Bxb2 10.dxe6 Bxa1 11.exf7+ Kxf7 12.Bd3 Qa5+ 13.Nbd2 Qxa2 14.O-O Bf6 15.e5 dxe5 16.Nxe5+ Bxe5 17.Bxe5 Nf6 18.Bxf6 exf6 19.Qh5+ Kf8 20.Qg6 Qxd2 21.Qxf6+ Ke8 22.Qxh8+ Kd7 23.Qg7+ Kd6 24.Qf6+ Kc7 25.Qe7+ Bd7 26.Qxc5+ Bc6 27.Qe5+ Kd8 28.Qd6+ Bd7 29.Qf8+ Kc7 30.Qc5+ Kd8 31.Be4 Rc8 32.Qe5 Rxc4 33.Bxb7 Rc2 34.Bf3 Rc1 35.Qh8+ Kc7 36.Qe5+ Kd8 37.Qb8+ Ke7 38.Qe5+ Be6 39.Qg7+ Kd6 40.Qf8+ Kc7 41.Qe7+ Bd7 42.Qe5+ Kb6 43.Qf6+ Kc7 44.Qe5+ 1/2-1/2
2021.04.06 Titled Tuesday 6th Apr
1704653 CM Kadam, Om Manish (2114) FM Elgersma, Onno (2298) 1-0
1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 5.Nc3 a6 6.g3 h5 7.h3 Qc7 8.Bg2 Nf6 9.Be3 Ne5 10.O-O Nc4 11.Bc1 Bc5 12.Nb3 Ba7 13.Qe2 Qxg3 14.Kh1 Qc7 15.f4 Ng4 16.e5 Nge3 17.Bxe3 Nxe3 18.Ne4 Nf5 19.Qd3 Qb6 20.Nbc5 h4 21.Rad1 O-O 22.b3 Rb8 23.Rfe1 Qc7 24.b4 a5 25.Nxd7 Bxd7 26.Qxd7 Qxd7 27.Rxd7 axb4 28.Nd6 Ng3+ 29.Kh2 Bf2 30.Rd1 Rfd8 31.Nxb7 Rxd7 32.Rxd7 Ra8 33.Nd6 Rxa2 34.Nxf7 Ra1 35.Be4 Nf1+ 36.Kg2 Ne3+ 37.Kxf2 1-0
2021.04.06 Titled Tuesday 6th Apr
1705961 FM Elgersma, Onno (2298) FM Chernomordik, P (2177) 0-1
1.d4 g6 2.Nf3 Bg7 3.h4 h6 4.e4 d6 5.Nc3 a6 6.a4 b6 7.Bf4 Bb7 8.Qd2 Nd7 9.Bc4 e6 10.O-O Ne7 11.b4 d5 12.exd5 Nxd5 13.Nxd5 exd5 14.Rfe1+ Kf8 15.Bb3 c5 16.bxc5 bxc5 17.dxc5 Bxa1 18.Bd6+ Kg8 19.Rxa1 Nf6 20.Qd4 Kh7 21.Re1 Re8 22.Rxe8 Nxe8 23.Be5 Rc8 24.h5 Qe7 25.hxg6+ fxg6 26.Qg4 Rxc5 27.Bd4 Rc7 28.c3 Bc8 29.Qf4 Be6 30.Bc2 Bf7 31.Ne5 Qg5 32.Qxg5 hxg5 33.Nf3 g4 34.Ne5 Be6 35.Nd3 Nd6 36.Nf4 Bf7 37.Kf1 Ne4 38.Bxe4 dxe4 39.Ke2 Rc4 40.Ke3 Rxa4 41.Kxe4 Ra2 42.f3 g3 43.Ke3 Rc2 44.Bf6 a5 45.Kd3 Rf2 46.Bh4 a4 47.Bxg3 Rb2 48.Bh4 a3 49.Bf6 Rb6 50.Bd4 a2 51.c4 Rd6 52.Nd5 Bxd5 0-1
2021.04.06 Titled Tuesday 6th Apr
1705711 IM Pantzar, Milton (2421) FM Elgersma, Onno (2298) 1-0
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.cxd5 exd5 5.Bg5 c6 6.e3 Bd6 7.Bd3 O-O 8.Nge2 h6 9.Bh4 Re8 10.h3 a5 11.O-O Na6 12.Qd2 Nc7 13.Rad1 Ne6 14.f3 Bb8 15.Bb1 Ng5 16.Qd3 b5 17.e4 b4 18.e5 Ba6 19.Qc2 bxc3 20.Rfe1 g6 21.Nxc3 Nh5 22.Qf2 Nf4 23.Qg3 Nh5 24.Qf2 Ra7 25.f4 Kg7 26.Kh1 Rb7 27.Qe3 Ne6 28.Bxd8 Rxd8 29.f5 gxf5 30.Bxf5 Ng5 31.g4 1-0
2021.03.09 Titled Tuesday 9th Mar
1732380 FM Elgersma, Onno (2298) FM Sadykov, Ra (2345) 0-1
1.e4 c5 2.Nf3 e6 3.g3 Nc6 4.Bg2 Nf6 5.Qe2 d6 6.O-O Be7 7.c3 e5 8.d3 O-O 9.Nfd2 d5 10.exd5 Nxd5 11.a4 Re8 12.Na3 Bf8 13.Nac4 g6 14.h4 h6 15.a5 Bg7 16.Ne4 Bf8 17.Rd1 f5 18.Ned2 Kh7 19.Qf3 Be6 20.Re1 Bg7 21.Nb3 e4 22.dxe4 Nxc3 23.bxc3 Bxc4 24.Nxc5 Ne5 25.Qf4 Qc7 26.Be3 b6 27.axb6 axb6 28.Rxa8 Rxa8 29.exf5 Rf8 30.fxg6+ Kh8 31.Qe4 bxc5 32.Bf4 Re8 33.Kh1 Bg8 34.h5 Qe7 35.Qf5 Qf6 36.Qxf6 Bxf6 37.Rd1 c4 38.Rd6 Bg7 39.Ra6 Nd3 40.Ra7 Nxf2+ 41.Kg1 Nd3 42.Bd2 Ne5 43.Be4 Nd3 44.Bxh6 Bxh6 45.Bf5 Bg7 46.g4 Bh6 47.Kg2 Bg7 48.g5 Nf4+ 49.Kf3 Nxh5 50.Kg4 Be6 51.Bxe6 Rxe6 52.Kxh5 Bxc3 53.Rc7 Re4 54.g7+ Bxg7 55.Kg6 Re6+ 56.Kf5 Re5+ 57.Kg6 Re6+ 58.Kh5 Re8 59.Rxc4 Kg8 60.Rc7 Bf8 61.Rb7 Re6 62.g6 Be7 63.Kg4 Kg7 64.Kf5 Re1 65.Ra7 Rf1+ 66.Ke6 Re1+ 67.Kf5 Kh6 68.Rb7 Rf1+ 69.Ke6 Bg5 0-1
2021.03.09 Titled Tuesday 9th Mar
1733156 FM Elgersma, Onno (2298) IM Nozdrachev, L (2372) 1-0
1.e4 d6 2.Nf3 Nf6 3.Nc3 e5 4.d4 Nbd7 5.Bc4 Be7 6.a4 O-O 7.O-O c6 8.Re1 Qc7 9.h3 Re8 10.Qd3 Nf8 11.Ng5 Ne6 12.Nxe6 Bxe6 13.Bxe6 fxe6 14.dxe5 dxe5 15.Qc4 Bf8 16.Bg5 Qa5 17.Rad1 Qb4 18.Qd3 Rad8 19.Qf3 Rxd1 20.Rxd1 Be7 21.b3 Rd8 22.Rxd8+ Bxd8 23.Qd3 Qd4 24.Bxf6 gxf6 25.Kf1 Bb6 26.Qxd4 exd4 27.Nd1 Kf7 28.Ke2 Ke7 29.Nb2 Kd6 30.Nd3 Ba5 31.f4 Bc3 32.g4 b5 33.h4 a6 34.g5 Ke7 35.Kf3 Bd2 36.Kg4 Kf7 37.h5 Kg7 38.gxf6+ Kxf6 39.e5+ Kf7 40.f5 Be3 41.f6 Bg1 42.Kf3 Bh2 43.Ke4 Bg1 44.Nc5 bxa4 45.bxa4 a5 46.Nb7 Be3 47.Nxa5 c5 48.Nb7 c4 49.Nd6+ 1-0
2021.03.09 Titled Tuesday 9th Mar
1732399 FM Elgersma, Onno (2298) WFM Belova, O (2058) 1-0
1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 Bb4 5.Bxc6 bxc6 6.d3 d6 7.O-O h6 8.Ne2 c5 9.Ng3 O-O 10.a4 Ba5 11.Qe2 Qe7 12.Nh4 Nh7 13.Nhf5 Qf6 14.Nh5 Qh4 15.Nhxg7 Bxf5 16.Nxf5 Qf6 17.Bxh6 1-0
2021.03.09 Titled Tuesday 9th Mar
1731897 FM Dowgird, F (2348) FM Elgersma, Onno (2298) 1-0
1.d4 d5 2.Bf4 Nf6 3.e3 c5 4.c3 Nc6 5.Nd2 e6 6.Ngf3 Nh5 7.Bg5 f6 8.Bh4 cxd4 9.cxd4 g6 10.a3 Ng7 11.Bd3 Nf5 12.Bxf5 exf5 13.b4 Be7 14.O-O O-O 15.Nb3 b6 16.b5 Na5 17.Nxa5 bxa5 18.Qb3 Rb8 19.Bg3 Rb7 20.Rfc1 a6 21.Rxc8 Qxc8 22.Qxd5+ Kg7 23.bxa6 Ra7 24.Qxa5 Rxa6 25.Qd2 Rxa3 26.Rc1 Qa6 27.h4 Rc8 28.Rxc8 Qxc8 29.d5 Ra1+ 30.Kh2 Qc1 31.Qxc1 Rxc1 32.Nd4 Kf7 33.d6 Bd8 34.h5 Bb6 35.hxg6+ hxg6 36.Nb5 Ke6 37.Nc7+ Bxc7 38.dxc7 g5 39.Kh3 Rh1+ 40.Bh2 Rc1 41.Bg3 Kf7 42.f3 Ke6 43.Bh2 Rc3 44.Bg3 Rc2 45.Kh2 Kf7 46.Kg1 Ke6 47.Kf1 Kd7 48.Bh2 Ra2 49.Bg3 Rc2 50.Bh2 Kc8 51.Bg3 Kb7 52.Bh2 Ka6 53.Bg3 Kb5 54.Bh2 Ka4 55.Bg3 Rc4 56.Ke2 Kb5 57.Kd3 Rc1 58.Bd6 Ka6 59.Be7 Rxc7 60.Bxf6 g4 61.fxg4 Rd7+ 62.Bd4 fxg4 63.Ke4 Kb5 64.Kf4 Kc4 65.Kxg4 Kd5 66.Kf5 Rb7 67.g4 Rb1 68.g5 Rf1+ 69.Kg6 Ke6 70.Kg7 Rg1 71.Bf6 Kf5 72.Kf7 Rb1 73.g6 Rg1 74.g7 Ke4 75.Bd4 1-0
2021.03.09 Titled Tuesday 9th Mar
1731931 FM Grieve, Harry (2351) FM Elgersma, Onno (2298) 1-0
1.d4 d5 2.Bg5 Bf5 3.c4 c6 4.e3 dxc4 5.Bxc4 Bxb1 6.Rxb1 Qa5+ 7.Kf1 Qxg5 8.Qb3 Qf5 9.e4 Qd7 10.Bxf7+ Kd8 11.Bxg8 Qc7 12.Nf3 Qb6 13.Ng5 Rxg8 14.Qxg8 Qb4 15.Qxf8+ 1-0
2021.03.09 Titled Tuesday 9th Mar
1730950 FM Elgersma, Onno (2298) IM Quintiliano Pinto, R (2469) 0-1
1.e4 c5 2.Nf3 d6 3.Bb5+ Nd7 4.d4 cxd4 5.Qxd4 a6 6.Bxd7+ Bxd7 7.Nc3 Rc8 8.O-O e5 9.Qd3 Qc7 10.a4 Be6 11.Rd1 h6 12.Nd2 Nf6 13.Nf1 Qc4 14.Ne3 Qxd3 15.Rxd3 Be7 16.f3 O-O 17.Bd2 Rfd8 18.Ncd5 Bxd5 19.exd5 g6 20.c4 Nd7 21.Ba5 b6 22.Bb4 Nc5 23.Bxc5 bxc5 24.b3 f5 25.g4 Rf8 26.Rad1 Rb8 27.Kg2 Kh7 28.h3 Bg5 29.Nf1 e4 30.fxe4 fxe4 31.Rc3 Rf3 32.Rxf3 exf3+ 33.Kxf3 Rxb3+ 34.Kg2 Rb4 35.Re1 Rxc4 36.Re6 Bf4 37.Re7+ Kg8 38.Kf3 g5 39.Ne3 Rc3 0-1
2021.03.09 Titled Tuesday 9th Mar
1733279 FM Elgersma, Onno (2298) IM Gelman, A (2403) 0-1
1.e4 c5 2.Nf3 e6 3.g3 Nc6 4.Bg2 Nf6 5.Qe2 d6 6.O-O Be7 7.c3 O-O 8.d3 Rb8 9.a4 a6 10.Nbd2 b5 11.d4 Qc7 12.dxc5 dxc5 13.e5 Nd7 14.Re1 Bb7 15.h4 Rfd8 16.h5 h6 17.Nf1 c4 18.axb5 axb5 19.N1h2 Nc5 20.Bf4 Nd3 21.Red1 Bc5 22.Ng4 Ne7 23.b4 Bb6 24.Bxh6 gxh6 25.Nf6+ Kg7 26.Kh2 Nxf2 27.Nd4 Bxg2 28.Qxf2 Qxe5 29.Rf1 Bxf1 30.Rxf1 Rxd4 31.Ng4 Qxh5+ 0-1
2021.03.09 Titled Tuesday 9th Mar
1733028 CM Begmuratov, Khumoyun (1971) FM Elgersma, Onno (2298) 1/2-1/2
1.e4 c6 2.d3 d5 3.Nd2 e5 4.Ngf3 Bg4 5.Be2 Bxf3 6.Nxf3 Nd7 7.O-O Ngf6 8.Bg5 Bd6 9.exd5 cxd5 10.c4 d4 11.Nd2 O-O 12.Bf3 Rb8 13.a4 Be7 14.Qe2 Re8 15.Rfe1 a5 16.Bxf6 Bxf6 17.Ne4 Be7 18.Bg4 Nc5 19.Nxc5 Bxc5 20.Bf5 g6 21.Be4 Qd6 22.Qf3 b6 23.Bd5 Rf8 24.Re4 Kh8 25.Rae1 Rbe8 26.Qg3 Bb4 27.R1e2 f6 28.Rh4 f5 29.Qh3 Re7 30.Rh6 Qf6 31.Qg3 Bc5 32.Qf3 Rfe8 33.Bc6 Rf8 34.Rh3 Kg7 35.Bd5 e4 36.dxe4 fxe4 37.Qxf6+ Rxf6 38.Rxe4 Rxe4 39.Bxe4 Re6 40.f3 d3+ 41.Kf1 d2 42.Ke2 Bb4 43.Kd1 Rd6 44.Rh4 Rd4 45.b3 h5 46.g4 hxg4 47.Rxg4 Rd6 48.h4 Kh6 49.Rg5 Rf6 50.Rd5 Rf4 51.Rg5 Rxh4 52.Rxg6+ Kh5 53.Rg1 Rh2 54.f4 Rf2 55.f5 Bc3 56.Bd3 Kh4 57.Be2 Rxf5 58.Rg4+ Kh3 59.Rg1 Rf4 60.Kc2 Bb4 61.Bd3 Rf3 62.Rd1 Re3 63.Rh1+ Kg2 64.Rd1 Re1 65.Bf5 Kf2 66.Bd3 Rxd1 67.Kxd1 Ke3 68.Bf5 Kd4 69.Be6 Kc3 70.Bd5 Kd4 71.Bf7 Kc5 72.Ke2 Kd6 73.Bg6 Kc5 74.Bc2 Kd6 75.Kd3 Kc5 76.Ke4 Ba3 77.Bd1 Bb4 78.Ke5 Ba3 79.Ke6 Bb4 80.Ke5 Ba3 81.Ke4 Bb4 82.Kd3 Ba3 83.Kxd2 Bb4+ 84.Kd3 Ba3 85.Ke4 Bb4 86.Ke5 Ba3 87.Bf3 Bb4 88.Bd5 Ba3 89.Ke4 Bb4 90.Kd3 Ba3 91.Kc2 Bb4 92.Kb2 Be1 93.Be4 Bb4 94.Bc2 Be1 95.Kc1 Bb4 96.Kd1 Ba3 97.Ke2 Bb4 98.Ke3 Ba3 99.Bb1 Bb4 100.Bg6 Ba3 101.Bf7 Bb4 102.Bd5 Ba3 103.Ke4 Bb4 104.Ke5 Ba3 105.Ke6 Bb4 106.Kd7 Ba3 107.Kc7 Bb4 108.Kb7 Ba3 109.Ka6 Bb4 110.Kb7 Ba3 111.Kc7 Bb4 112.Kd7 Ba3 113.Ke7 Bb4 114.Ke6 Ba3 115.Ke5 Bb4 116.Ke4 Ba3 117.Ke3 Bb4 118.Kd3 Ba3 119.Kc2 Bb4 120.Kb2 Be1 121.Be4 Bb4 122.Bb1 Be1 123.Ba2 Bb4 124.Bb1 Be1 125.Kc2 Bb4 126.Kd1 Ba3 127.Bc2 Bb4 128.Kc1 Ba3+ 129.Kb1 Bb4 130.Bd3 Be1 131.Kc2 Bb4 132.Kd1 Ba3 133.Ke2 1/2-1/2
2021.03.09 Titled Tuesday 9th Mar
1731246 FM Khnykin, N (2309) FM Elgersma, Onno (2298) 0-1
1.d4 d5 2.Nf3 Bg4 3.e3 e6 4.Be2 Nf6 5.Nc3 c5 6.b3 Nc6 7.Bb2 Rc8 8.O-O cxd4 9.Nxd4 Nxd4 10.exd4 Bf5 11.Bb5+ Nd7 12.Bd3 Bg6 13.a4 a6 14.Ne2 Be7 15.Nf4 Bd6 16.Qf3 Qf6 17.g3 Bxf4 18.Qxf4 Qxf4 19.gxf4 Bxd3 20.cxd3 Ke7 21.Rac1 Kf6 22.f3 Kf5 23.Kg2 Kxf4 24.Kf2 Kf5 25.h3 h6 26.Bc3 g5 27.Bd2 Nb8 0-1
2021.03.09 Titled Tuesday 9th Mar
1732829 FM Pastar, S (2374) FM Elgersma, Onno (2298) 0-1
1.b3 d5 2.Bb2 Nf6 3.f4 Bg4 4.Nf3 Bxf3 5.exf3 e6 6.Nc3 c5 7.d4 Nc6 8.Bb5 Rc8 9.f5 exf5 10.Qd3 cxd4 11.Ne2 Bb4+ 12.Kf2 O-O 13.Qxf5 Re8 14.Rhd1 Re5 15.Qh3 Rh5 16.Qg3 Bd6 17.Nf4 Rf5 18.Bc1 Qc7 19.Qh3 Rxf4 20.Bxf4 Bxf4 21.g3 Be3+ 22.Kg2 Ne5 23.Bd3 Nxd3 24.cxd3 Qc2+ 25.Kh1 Re8 26.Qg2 Qxg2+ 27.Kxg2 Rc8 28.a4 Rc2+ 29.Kh1 h5 30.a5 a6 31.b4 g5 32.Rab1 h4 33.g4 Bf4 34.b5 Rxh2+ 35.Kg1 Ra2 36.bxa6 bxa6 37.Rb6 Nd7 38.Rxa6 Ne5 39.Rf1 Nxd3 40.Ra8+ Kg7 41.a6 Ne5 42.a7 h3 43.Kh1 h2 44.Rd8 Rxa7 45.Rxd5 Ra2 46.Rxd4 Nc6 47.Re4 Na5 48.Rb1 Nc6 49.Rd1 Ne7 50.Rxe7 Kf6 51.Re4 Rf2 52.Ree1 Rxf3 53.Rf1 Rxf1+ 54.Rxf1 Ke5 55.Kg2 f6 56.Re1+ Kd6 57.Kf3 Kd5 58.Rd1+ Ke5 59.Re1+ Kd5 60.Rd1+ Ke6 61.Ke4 Be5 62.Rf1 Bf4 63.Rb1 Be5 64.Rb6+ Kf7 65.Rb7+ Kg6 66.Rb1 Bf4 67.Ra1 Be5 68.Rh1 Bf4 69.Rb1 Be5 70.Rf1 Bf4 71.Kf3 f5 72.Rh1 Kf6 73.Rd1 Ke5 74.Re1+ Kf6 75.Ra1 fxg4+ 76.Kxg4 Ke5 77.Ra5+ Ke4 78.Ra1 Ke3 79.Kh3 Kf2 80.Ra2+ Kf3 81.Ra3+ Ke4 82.Ra4+ Kf5 83.Ra2 g4+ 84.Kg2 g3 85.Ra5+ Kg4 86.Ra4 Kf5 87.Ra1 Kg4 88.Rf1 Be5 89.Rh1 Bf4 90.Rf1 Be5 91.Rd1 Bf4 92.Rd8 Kf5 93.Rg8 Ke4 94.Rf8 Ke3 95.Re8+ Kd4 96.Rh8 Ke3 97.Rh4 Ke4 98.Kf1 Kf3 99.Rh3 Kg4 100.Rh8 Kf3 101.Rh3 Bg5 102.Rh5 g2+ 103.Ke1 g1=Q# 0-1
2021.03.09 Titled Tuesday 9th Mar
1731554 FM Elgersma, Onno (2298) FM Sydoryka, Vladyslav (2331) 1-0
1.e4 c6 2.Nf3 d5 3.Nc3 dxe4 4.Nxe4 Nf6 5.Qe2 Nxe4 6.Qxe4 Qa5 7.c3 Bf5 8.Qf4 e6 9.d4 Nd7 10.g3 Be7 11.Bg2 O-O 12.O-O Bg6 13.a4 Qd8 14.Re1 Nf6 15.Ne5 Nd5 16.Qf3 Rc8 17.h4 Bc2 18.Qe2 Bb3 19.Qd3 Qa5 20.Bd2 Qa6 21.c4 Bxc4 22.Qxc4 Qb6 23.Nd7 Qxb2 24.Nxf8 Qxd2 25.Nd7 b6 26.Ne5 Nb4 27.Nxc6 Nxc6 28.Bxc6 Bf6 29.Rad1 Qb2 30.d5 exd5 31.Qxd5 g6 32.Be8 Kg7 33.Qxf7+ Kh6 34.Qf8+ Bg7 35.Qf4+ Kh5 36.Rd5+ Be5 37.Rdxe5+ 1-0
2021.02.23 Titled Tuesday 23rd Feb
1751603 IM Zemerov, V (2268) FM Elgersma, Onno (2298) 1-0
1.Nf3 d5 2.c4 e6 3.d4 Nf6 4.Nc3 a6 5.cxd5 exd5 6.Bg5 Be6 7.e3 Bd6 8.Bd3 O-O 9.Qc2 h6 10.h4 Nbd7 11.O-O-O Rc8 12.Kb1 c5 13.dxc5 Nxc5 14.Bxf6 Qxf6 15.Nd4 b5 16.Bf5 b4 17.Bxe6 fxe6 18.Na4 b3 19.axb3 Nxa4 20.Qe2 Nc5 21.f4 e5 22.fxe5 Bxe5 23.Nf3 Rfd8 24.g4 Qg6+ 25.Ka2 Bd6 26.Rxd5 Qe6 27.Qc4 Be7 28.Rxd8+ Rxd8 29.Qxe6+ Nxe6 30.Ne5 Bf6 31.Nc6 Rc8 32.Nb4 Ra8 33.Nd5 a5 34.Ka3 Be5 35.Ka4 Nc5+ 36.Kb5 Nxb3 37.Kc4 Nd2+ 38.Kc5 Ne4+ 39.Kc6 Rb8 40.Ne7+ Kf7 41.Nf5 Rxb2 42.Kd5 Nf6+ 43.Kxe5 Nxg4+ 44.Kf4 Nf6 45.Ra1 Rb4+ 46.Kf3 a4 47.Nd6+ Ke6 48.Nc8 g5 49.hxg5 hxg5 50.Na7 g4+ 51.Kg3 Kf5 52.Nc6 Ne4+ 53.Kh4 Rb2 54.Nd4+ Ke5 55.Kxg4 Rg2+ 56.Kf3 Rg3+ 57.Ke2 Kd5 58.Nf5 Rg2+ 59.Kf1 Rh2 60.Rxa4 Nd2+ 61.Kg1 Nf3+ 62.Kf1 Ke5 63.Ng3 Nd2+ 64.Ke1 Nf3+ 65.Kd1 Rd2+ 66.Kc1 Rg2 67.Ra5+ Ke6 68.Nh5 Rh2 69.Nf4+ Kd6 70.e4 Rh4 71.e5+ Nxe5 72.Rd5+ Kc6 73.Rxe5 1-0
2021.02.23 Titled Tuesday 23rd Feb
1752139 FM Elgersma, Onno (2298) CM Krzywda, A (2115) 0-1
1.d4 Nf6 2.Nf3 c5 3.Bg5 Ne4 4.h4 d5 5.e3 Qb6 6.Qc1 Nc6 7.c3 cxd4 8.exd4 Bf5 9.Nbd2 Rc8 10.Be2 e5 11.Nxe4 dxe4 12.Nxe5 Nxd4 13.Bc4 Ne6 14.O-O Bd6 15.Be3 Qc7 16.Bb5+ Ke7 17.Nc4 Rhd8 18.Qe1 Kf8 19.Nxd6 Qxd6 20.Rd1 Qe5 21.Be2 Nf4 22.Bxf4 Qxf4 23.g3 Qe5 24.Rxd8+ Rxd8 25.Bc4 Bh3 26.Qe3 Bxf1 27.Kxf1 b6 28.a4 h6 29.Kg2 Kg8 30.h5 Kh7 31.Qe2 f5 32.Bf7 Kh8 33.Bg6 Rf8 34.Qc4 f4 35.Qxe4 f3+ 36.Kh2 Qc5 37.Kg1 Qg5 38.Qb4 Qc5 39.Qxc5 bxc5 40.Be4 Kg8 41.Bd5+ Kh8 42.Kh2 Rf5 43.Be6 Rxh5+ 44.Kg1 Re5 45.Bg4 Re2 46.Bxf3 Rxb2 47.c4 Rb4 48.Bd5 Rxa4 49.f4 Ra3 50.Kf2 g6 51.g4 Kg7 52.g5 hxg5 53.fxg5 a5 54.Be4 a4 0-1
2021.02.23 Titled Tuesday 23rd Feb
1751122 IM Leiva, G (2391) FM Elgersma, Onno (2298) 1-0
1.Nf3 d5 2.g3 Bg4 3.Bg2 Nd7 4.O-O Ngf6 5.d3 e5 6.Nbd2 c6 7.e4 dxe4 8.dxe4 Be7 9.h3 Bh5 10.Qe1 O-O 11.Nh4 Bg6 12.a4 Nc5 13.a5 Qc7 14.b4 Ne6 15.c3 c5 16.b5 c4 17.Qe2 Rac8 18.Nf5 Rfd8 19.b6 axb6 20.axb6 Qd7 21.Nxc4 Bf8 22.Nxe5 Qe8 23.Bb2 Nc5 24.Nxg6 hxg6 25.Nd4 Nfxe4 26.Rfe1 f5 27.Nb5 Qc6 28.Na7 Qd6 29.Nxc8 Rxc8 30.Ba3 Qxb6 31.Qc4+ Kh7 32.Rab1 Qc7 33.Bxe4 Nxe4 34.Qxc7 Rxc7 35.Bxf8 Rxc3 36.Rxb7 Kh6 37.Bxg7+ Kg5 38.Bxc3 Nxc3 39.Re6 Ne4 40.Rg7 1-0
2021.02.23 Titled Tuesday 23rd Feb
1750114 FM Elgersma, Onno (2298) GM Klekowski, M (2510) 0-1
1.e4 c5 2.Nf3 e6 3.g3 Nc6 4.Bg2 g6 5.O-O Bg7 6.c3 Nge7 7.d4 cxd4 8.cxd4 d5 9.Nc3 dxe4 10.Nxe4 O-O 11.Bg5 f6 12.Be3 Nf5 13.Nc5 Nce7 14.Qb3 Nd5 15.Bd2 b6 16.Ne4 Bb7 17.Rfe1 Qd7 18.Rac1 Rac8 19.h3 Rxc1 20.Rxc1 Rc8 21.Rxc8+ Bxc8 22.g4 Nd6 23.Nxd6 Qxd6 24.g5 fxg5 25.Bxg5 Bd7 26.Qc2 Nf4 27.Bxf4 Qxf4 28.Qd3 Qc1+ 29.Kh2 Qxb2 30.Qe4 Qxf2 31.d5 Qc5 32.Ng5 Qc7+ 33.Kg1 Qc1+ 34.Kf2 Qxg5 35.dxe6 Qf6+ 36.Bf3 Bxe6 37.Qa8+ Bf8 38.Qc6 Qd4+ 39.Kg2 Bxa2 40.Qb7 Bc5 41.Qc8+ Kg7 42.Qc7+ Bf7 43.Qg3 Qg1# 0-1
2021.02.23 Titled Tuesday 23rd Feb
1750383 Quirke, J (2107) FM Elgersma, Onno (2298) 0-1
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.cxd5 exd5 5.Bg5 c6 6.e3 Bd6 7.Bd3 O-O 8.Nge2 h6 9.Bh4 Re8 10.h3 a5 11.O-O Na6 12.Kh1 Nc7 13.Qd2 Ne6 14.f3 Ng5 15.Nf4 Qb6 16.Rae1 a4 17.a3 Bd7 18.Bf2 Qc7 19.h4 Ne6 20.Nxe6 fxe6 21.e4 Bf4 22.Qc2 Nh5 23.Ne2 Ng3+ 24.Nxg3 Bxg3 25.e5 Bxf2 26.Qxf2 Rf8 27.Bb1 Be8 28.Qc2 g6 29.f4 Qe7 30.g3 Qg7 31.Kg2 b6 32.Rh1 Rc8 33.Ref1 c5 34.Qd3 cxd4 35.Qxd4 b5 36.Qb6 Qe7 37.h5 gxh5 38.Rh4 Rb8 39.Qe3 b4 40.Rfh1 bxa3 41.bxa3 Rb2+ 42.Kh3 Qg7 43.Rh2 Rb3 0-1
2021.02.23 Titled Tuesday 23rd Feb
1752255 FM Gunduz, Umut Erdem (2137) FM Elgersma, Onno (2298) 1-0
1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 5.Nc3 a6 6.Be3 Nf6 7.Qe2 Bb4 8.Nxc6 bxc6 9.Qc4 Bxc3+ 10.Qxc3 d5 11.exd5 cxd5 12.Qa3 Qc7 13.O-O-O e5 14.Bc5 Bf5 15.Bb5+ Bd7 16.Bd6 Qb6 17.Bxd7+ Nxd7 18.Rxd5 O-O-O 19.Be7 Rde8 20.Rhd1 Nb8 21.Qc3+ Nc6 22.Bc5 Qb7 23.Rd6 Kb8 24.Rd7 Qb5 25.Bd6+ 1-0
2021.02.23 Titled Tuesday 23rd Feb
1752000 Hasman, C (2101) FM Elgersma, Onno (2298) 0-1
1.d4 d5 2.c4 e6 3.Nf3 a6 4.e3 Nf6 5.Nc3 dxc4 6.Bxc4 b5 7.Bd3 Bb7 8.O-O Be7 9.e4 Nbd7 10.e5 Nd5 11.Ne4 c5 12.Bg5 O-O 13.Nd6 Rb8 14.h4 h6 15.Bxe7 Qxe7 16.Rc1 c4 17.Be4 Ba8 18.Qd2 f5 19.Bxd5 Bxd5 20.Qf4 Nb6 21.h5 Ba8 22.Nh4 Nd5 23.Qg3 Qg5 24.Qxg5 hxg5 25.Ng6 Nf4 26.Nxf8 Kxf8 27.f3 Ke7 28.a4 Ne2+ 29.Kf2 Nxc1 30.Rxc1 Bd5 31.axb5 axb5 32.Ra1 b4 33.Ra7+ Kf8 34.Ke3 c3 35.bxc3 b3 36.Ra1 b2 37.Rb1 Ba2 38.Rxb2 Rxb2 39.g4 fxg4 40.fxg4 Ke7 41.c4 Rg2 42.Kf3 Rg1 43.Nc8+ Kd7 44.Nd6 Rc1 45.c5 Bd5+ 46.Ke3 Rg1 47.Nf7 Rxg4 48.Nh8 Rg3+ 49.Kf2 Rd3 50.Ng6 Rxd4 51.Nf8+ Kc6 52.Nh7 Kxc5 53.Nxg5 Rf4+ 54.Ke3 Rf5 55.Nh3 Rxe5+ 56.Kd2 Rxh5 57.Nf4 Rf5 58.Nd3+ Kd4 59.Nb4 Bc4 60.Nc6+ Kc5 61.Ne7 Rf2+ 62.Ke3 Re2+ 63.Kf3 e5 64.Nf5 Re1 65.Ne3 Rxe3+ 66.Kxe3 Kd5 67.Kf2 e4 68.Ke3 Ke5 69.Kf2 Kd4 70.Kg2 e3 71.Kg1 Kd3 72.Kg2 Kd2 73.Kh2 e2 74.Kg2 e1=Q 75.Kh2 Qf2+ 76.Kh3 Be6# 0-1
2021.02.23 Titled Tuesday 23rd Feb
1750743 FM Elgersma, Onno (2298) WFM Szente Varga, F (2100) 1-0
1.e4 e5 2.Nf3 Nc6 3.Bb5 Bc5 4.Nc3 d6 5.O-O Nf6 6.d4 exd4 7.Nxd4 Bd7 8.Bxc6 bxc6 9.Bg5 O-O 10.Nf5 Bxf5 11.exf5 Qd7 12.Bxf6 gxf6 13.Qf3 d5 14.Rad1 Kh8 15.Ne4 Be7 16.Ng3 Rg8 17.h4 Rg7 18.Nh5 Rgg8 19.c4 Rab8 20.cxd5 cxd5 21.Rxd5 Qa4 22.Re1 Qxh4 23.Rxe7 Rxb2 24.Rd1 Rxa2 25.Rxf7 Rg5 26.Rf8+ Rg8 27.Rxg8+ Kxg8 28.Qd5+ 1-0
2021.02.23 Titled Tuesday 23rd Feb
1750516 IM Dardha, Daniel (2503) FM Elgersma, Onno (2298) 1-0
1.Nc3 d5 2.e4 dxe4 3.Nxe4 Nf6 4.Qe2 Nbd7 5.Nf3 Nxe4 6.Qxe4 Nf6 7.Qh4 Bf5 8.Bc4 e6 9.d4 Be7 10.Bg5 Bxc2 11.O-O Bf5 12.Ne5 O-O 13.Rad1 c6 14.a3 Nd5 15.Bxe7 Qxe7 16.Qg3 Nf6 17.Qb3 Rfd8 18.h3 Be4 19.Rfe1 Bd5 20.Qc3 Bxc4 21.Nxc4 Nd5 22.Qb3 Rac8 23.Ne5 b6 24.Rc1 c5 25.dxc5 bxc5 26.Qa4 Qg5 27.Nf3 Qf6 28.Rc2 Qe7 29.Qc4 Qb7 30.Ne5 Nf6 31.Qe2 Qd5 32.Rcc1 Rb8 33.Red1 Qb7 34.Nc4 Rxd1+ 35.Rxd1 Qc6 36.Qe5 Rf8 37.Rd6 Qb5 38.Qe2 Nd5 39.Qc2 Qb8 40.Rc6 Rc8 41.Rxc8+ Qxc8 42.Nd6 Qc6 43.Ne4 c4 44.Qd2 f5 45.Ng5 h6 46.Nf3 Qd6 47.Qd4 Kf7 48.Qxc4 Nf4 49.Qa4 1-0
2021.02.16 Titled Tuesday 16th Feb
1761290 FM Godzwon, Iwo (2375) FM Elgersma, Onno (2298) 0-1
1.d4 d5 2.Nf3 Bg4 3.e3 e6 4.Bd3 Nf6 5.b3 c5 6.Bb2 Nc6 7.Nbd2 cxd4 8.exd4 Bd6 9.h3 Bh5 10.a3 Rc8 11.O-O O-O 12.Qe2 Re8 13.g4 Bg6 14.Ne5 Qb6 15.Nxg6 hxg6 16.Nf3 Nd7 17.Rae1 e5 18.dxe5 Ndxe5 19.Kg2 Re7 20.Qe3 Qc7 21.Bb5 Nc4 22.Qc1 Rxe1 23.Rxe1 Bf4 24.Qa1 Nxb2 25.Qxb2 a6 26.Bd3 Qd6 27.h4 b5 28.Rh1 Ne5 29.Nxe5 Bxe5 30.Qc1 Qf6 31.h5 g5 32.Bf5 Rc3 33.Qd1 Qc6 34.Re1 Qd6 35.Qe2 f6 36.Rd1 d4 37.Qe4 Qd8 38.Qb7 Rc7 39.Qxa6 b4 40.Qe6+ Kh8 41.axb4 Qa8+ 42.f3 d3 43.Bxd3 Qb8 44.Qf5 Kg8 45.Qh7+ Kf7 46.Qh8 Qxh8 47.Bg6+ Ke7 48.c4 Qb8 49.b5 Qa8 50.Be4 Qa2+ 51.Kf1 Qh2 52.b6 Rd7 53.Rxd7+ Kxd7 54.c5 Bd4 55.c6+ Ke7 56.Ke1 Bc3+ 57.Kf1 Bd4 58.Ke1 Bxb6 0-1
2021.02.16 Titled Tuesday 16th Feb
1762096 FM Elgersma, Onno (2298) Papasimakopoulos, Alexandros (2251) 1-0
1.e4 e6 2.Nf3 d5 3.Nc3 Bb4 4.Qe2 d4 5.Nb1 c5 6.g3 Nc6 7.Bg2 Nge7 8.O-O O-O 9.d3 Ba5 10.Nbd2 Bc7 11.a4 b6 12.Nh4 Bb7 13.f4 f6 14.f5 exf5 15.Nxf5 Nxf5 16.exf5 Na5 17.Ne4 Kh8 18.Bd2 Nc6 19.Qh5 Qe8 20.Qh4 Qf7 21.Rae1 Be5 22.b3 Rfe8 23.g4 h6 24.g5 fxg5 25.Bxg5 Kg8 26.Bd2 Bf6 27.Qg3 Be5 28.Qg4 Kh7 29.f6 Qg6 30.Qh4 gxf6 31.Rxf6 Bxf6 32.Nxf6+ Kg7 33.Nxe8+ Rxe8 34.Rxe8 Qxe8 35.Qxh6+ Kf7 36.Bd5+ Ke7 37.Bg5+ Kd7 38.Qh3+ Kd6 39.Be4 Ne5 40.Bxb7 Qg8 41.Qg3 Qg6 42.Bf4 Qf5 43.Bxe5+ Qxe5 1-0
2021.02.16 Titled Tuesday 16th Feb
1762388 GM Mirzoev, A (2430) FM Elgersma, Onno (2298) 1-0
1.d4 d5 2.Nf3 e6 3.c4 Nf6 4.Nc3 a6 5.cxd5 exd5 6.Bg5 Be6 7.e3 Nbd7 8.Bd3 Bd6 9.O-O O-O 10.Bh4 c6 11.Rb1 Re8 12.Qc2 h6 13.Rfc1 Rc8 14.Bg3 Bxg3 15.hxg3 Qe7 16.b4 b5 17.a4 Nb6 18.Qb3 Nc4 19.Re1 Bg4 20.Ra1 Ra8 21.Ra2 Nd7 22.e4 Bxf3 23.gxf3 Qf6 24.Kg2 Qxd4 25.Rd1 Qf6 26.exd5 Nde5 27.Be4 Rad8 28.dxc6 Nxc6 29.Rxd8 Rxd8 30.axb5 axb5 31.Nxb5 N4e5 32.Ra6 Rd3 33.Ra8+ Nd8 34.Qb1 Rxf3 35.Rxd8+ Qxd8 36.Bxf3 Nxf3 37.Kxf3 Qb6 38.Qd3 g6 39.Qd5 Kg7 40.Kg2 Kh7 41.Qc5 Qb7+ 42.Kg1 h5 43.Nd4 h4 44.gxh4 Qe4 45.h5 gxh5 46.Qf5+ Qxf5 47.Nxf5 Kg6 1-0
2021.02.16 Titled Tuesday 16th Feb
1762652 FM Elgersma, Onno (2298) GM Iskusnyh, S (2473) 0-1
1.e4 e6 2.Nf3 d5 3.Nc3 Nf6 4.Qe2 Be7 5.g3 O-O 6.Bg2 c5 7.O-O Nc6 8.d3 b6 9.Rd1 Ba6 10.e5 Nd7 11.Bf4 Nd4 12.Nxd4 cxd4 13.Nb1 Rc8 14.c3 dxc3 15.Nxc3 Nc5 16.Rac1 Qd7 17.h4 Rc7 18.h5 Rfc8 19.h6 g6 20.Kh2 Qd8 21.Qf3 Bg5 22.d4 Bxf4 23.Qxf4 Nd3 24.Rxd3 Bxd3 25.Re1 g5 26.Qd2 Bg6 27.Qe3 a6 28.a3 b5 29.Qd2 a5 30.Rf1 b4 31.axb4 axb4 32.Nd1 Rc2 33.Qxb4 Qf8 34.Qb3 Qxh6+ 35.Kg1 Qf8 36.Ne3 Rb8 37.Qa4 Rcxb2 38.Ng4 Rb1 39.Nf6+ Kh8 40.Qa5 Rxf1+ 41.Bxf1 Rb1 42.Qd2 h6 43.f4 Qb4 44.Qh2 Kg7 45.fxg5 hxg5 46.Qf2 Qe1 47.Qxe1 Rxe1 48.Kf2 Rd1 49.Ng4 Rxd4 50.Nf6 Rd2+ 51.Ke3 Ra2 52.Be2 d4+ 53.Kf3 d3 54.Bd1 Ra1 55.Bb3 d2 56.Ke2 Rb1 57.Ba4 Ra1 58.Bb3 Ra3 59.Bd1 Rxg3 60.Kxd2 Rg2+ 61.Ke3 Rb2 62.Bf3 Rb3+ 63.Kf2 Rb5 64.Ng4 Bf5 65.Nf6 Rxe5 66.Ne8+ Kf8 67.Nd6 Ra5 68.Nb7 Ra2+ 69.Kg3 Ra3 70.Nc5 g4 71.Nd7+ 0-1
2021.02.16 Titled Tuesday 16th Feb
1760906 FM Elgersma, Onno (2298) CM Ardila, Oscar Humberto (2016) 1-0
1.e4 e5 2.Nf3 Nf6 3.Nc3 Nc6 4.Bb5 Bb4 5.d3 d6 6.O-O O-O 7.h3 Bxc3 8.bxc3 Qe7 9.c4 Nd8 10.Ba4 Ne6 11.Re1 h6 12.c3 Rd8 13.d4 Nf8 14.Bc2 c5 15.a4 Ng6 16.a5 Bd7 17.Rb1 Rab8 18.Ba3 b6 19.Bc1 Bc6 20.d5 Bd7 21.axb6 axb6 22.Ba4 Bc8 23.Bc6 Nh5 24.Ra1 Nhf4 25.Kh2 Qf6 26.Ra7 Nh4 27.Nxh4 Qxh4 28.Qf3 g5 29.Qg3 Qxg3+ 30.fxg3 Nd3 31.Rf1 Nxc1 32.Rxc1 f5 33.exf5 Bxf5 34.Rf1 Rf8 35.g4 Bc2 36.Rxf8+ Rxf8 37.Rd7 Rf6 38.Rb7 Bd3 39.Bd7 Rf2 40.Be6+ Kh8 41.Kg1 Rc2 42.Rxb6 Be4 43.Rxd6 Rxg2+ 44.Kf1 Rc2 45.Rd8+ Kg7 46.d6 Kf6 47.d7 Rd2 48.Re8 Bg2+ 49.Ke1 Rd6 50.d8=Q+ Rxd8 51.Rxd8 Kxe6 52.Rc8 Kd6 53.Rh8 Bxh3 54.Rxh6+ 1-0
2021.02.16 Titled Tuesday 16th Feb
1761435 FM Elgersma, Onno (2298) FM Spata, G (2257) 1-0
1.e4 e6 2.Nf3 d5 3.Nc3 dxe4 4.Nxe4 Nd7 5.g3 Be7 6.Bg2 Ngf6 7.Qe2 O-O 8.O-O c6 9.Rd1 Nxe4 10.Qxe4 Bf6 11.d4 Re8 12.c4 Qa5 13.Bf4 Nf8 14.a3 Ng6 15.Be3 e5 16.b4 Qc7 17.d5 Be7 18.g4 Rf8 19.g5 f5 20.gxf6 gxf6 21.dxc6 bxc6 22.Nh4 f5 23.Qxc6 Qxc6 24.Bxc6 Nxh4 25.Bxa8 f4 26.Bc5 Bxc5 27.bxc5 Bg4 28.Bd5+ Kg7 29.c6 Bxd1 30.Rxd1 Rc8 31.Rb1 Nf5 32.Be6 Rxc6 33.Bxf5 Rxc4 34.Rb7+ Kf6 35.Bxh7 f3 36.h3 Rc1+ 37.Kh2 Kg5 38.Kg3 Rc3 39.h4+ Kh6 40.Be4 Rxa3 41.Rh7# 1-0
2021.02.16 Titled Tuesday 16th Feb
1761705 FM Elgersma, Onno (2298) GM Jakubowski, K (2497) 0-1
1.e4 c5 2.Nf3 e6 3.g3 Nf6 4.Qe2 Nc6 5.Bg2 d5 6.exd5 Nxd5 7.O-O Be7 8.Nc3 O-O 9.d3 Nf6 10.Ne5 Nd4 11.Qd1 Qc7 12.Nc4 Nd5 13.a4 Rd8 14.Nb5 Qd7 15.Ne5 Qe8 16.c4 a6 17.Nxd4 Nb4 18.Nc2 Bf6 19.Nxb4 Bxe5 20.Nc2 Rb8 21.Qe2 Bf6 22.Bf4 e5 23.Be3 b6 24.Rab1 Bf5 25.Rfd1 Qxa4 26.b4 b5 27.cxb5 c4 28.dxc4 Bxc2 29.Rxd8+ Rxd8 30.Rc1 Bd1 31.Qb2 axb5 32.cxb5 Qxb5 33.Bc6 Qd3 34.b5 e4 35.b6 Bxb2 0-1
2021.02.16 Titled Tuesday 16th Feb
1762990 WFM Nasyrova, Ekaterina (2168) FM Elgersma, Onno (2298) 0-1
1.Nf3 Nf6 2.c4 e6 3.Nc3 d5 4.e3 c5 5.cxd5 exd5 6.Bb5+ Nc6 7.d4 Bd6 8.Ne5 Bd7 9.Nxd7 Qxd7 10.dxc5 Bxc5 11.O-O O-O 12.b3 a6 13.Be2 Rad8 14.Bb2 d4 15.Na4 Ba7 16.exd4 Nxd4 17.Bf3 Rfe8 18.Rc1 Qd6 19.Bxd4 Bxd4 20.Bxb7 a5 21.Qf3 Qe5 22.g3 h5 23.Bc6 Re7 24.Kg2 Ng4 25.Nc3 Nf6 26.Nb5 Bb6 27.Rfd1 Rxd1 28.Rxd1 h4 29.Nd6 h3+ 30.Kxh3 Rc7 31.Kg2 Qc5 32.Be4 Rd7 33.Qf5 Rxd6 34.Qxc5 Bxc5 35.Rc1 Bb6 36.Rc8+ Rd8 37.Rxd8+ Bxd8 38.Bc6 Kf8 39.Kf3 Ke7 40.Ke3 Kd6 41.Bb5 Bb6+ 42.Ke2 Ne4 43.Bc4 f6 44.f3 Nc3+ 45.Kd3 Nxa2 46.h4 Nb4+ 47.Ke2 Ke5 48.f4+ Kd4 49.h5 a4 50.Be6 a3 0-1
2021.02.16 Titled Tuesday 16th Feb
1762767 IM Langner, L1 (2380) FM Elgersma, Onno (2298) 1-0
1.e4 c5 2.d4 cxd4 3.c3 e6 4.cxd4 d5 5.e5 Nc6 6.Nf3 Bd7 7.a3 Rc8 8.Bd3 Qb6 9.Bc2 Na5 10.O-O Ne7 11.Nc3 Nc4 12.b3 Na5 13.Bb2 Ng6 14.h4 Be7 15.g3 O-O 16.h5 Nh8 17.Qd3 g6 18.Bc1 Nxb3 19.Rb1 Nxc1 20.Rfxc1 Qa6 21.Qe3 Qxa3 22.Rb3 Qa6 23.Bd3 Qa5 24.Rxb7 Rfd8 25.Ne2 Rxc1+ 26.Nxc1 Ba3 27.Nb3 Qc3 28.hxg6 fxg6 29.Nc5 Bxc5 30.dxc5 Bc6 31.Rc7 d4 32.Qh6 Nf7 33.Rxf7 Kxf7 34.Qxh7+ Kf8 35.Bxg6 Qc1+ 36.Kh2 Rd7 37.Qh8+ Ke7 38.Qf6# 1-0
2021.02.16 Titled Tuesday 16th Feb
1762015 GM Romanov, E (2599) FM Elgersma, Onno (2298) 1/2-1/2
1.d4 d5 2.c4 e6 3.Nf3 Nf6 4.g3 Be7 5.Bg2 O-O 6.Qc2 c5 7.dxc5 d4 8.Ne5 Bxc5 9.O-O Bd6 10.Nd3 Nc6 11.Bg5 e5 12.Nd2 Bf5 13.Rad1 Rc8 14.a3 h6 15.Bxf6 Qxf6 16.b4 b5 17.c5 Bb8 18.Qb3 Qg6 19.Nf3 Be6 20.Qb1 Bc4 21.Nh4 Qe6 22.Rde1 e4 23.Nb2 Rce8 24.Nxc4 bxc4 25.b5 Na5 26.Qb4 Nb3 27.f4 f5 28.Bh3 e3 29.Nxf5 Rxf5 30.Bxf5 Qxf5 31.Qxc4+ Qf7 32.Qxf7+ Kxf7 33.c6 Bc7 34.Rd1 Nd2 35.Rfe1 Ke6 36.Kg2 Kd5 37.Rc1 Rb8 38.a4 g5 39.fxg5 hxg5 40.Rc2 Rf8 41.Rec1 Rf2+ 42.Kh3 Rxe2 43.Rc5+ Ke4 44.Rxg5 Nf3 45.Rg4+ Kd3 46.Rg7 Rxh2+ 47.Kg4 Ne5+ 48.Kf5 Rf2+ 49.Ke6 Bb6 50.a5 Bxa5 51.Rxa7 Bb6 52.Ra6 Bd8 53.Kxe5 e2 54.b6 Rf1 55.Raa1 Rxc1 56.Rxc1 Bxb6 57.g4 Kd2 58.Rb1 e1=Q+ 59.Rxe1 Kxe1 60.g5 d3 61.g6 Ba5 62.g7 Bc3+ 63.Ke4 Bxg7 64.Kxd3 Be5 65.Ke4 Bh2 66.Kd5 Kf2 67.Ke6 Kg1 68.Kd7 Kg2 69.c7 Bxc7 1/2-1/2
2021.02.16 Titled Tuesday 16th Feb
1760761 GM Belous, V (2521) FM Elgersma, Onno (2298) 1-0
1.c4 e6 2.Nf3 d5 3.g3 Nf6 4.Bg2 Be7 5.O-O O-O 6.Qc2 c5 7.d4 cxd4 8.Nxd4 Nc6 9.Nxc6 bxc6 10.Rd1 Ba6 11.b3 Qb6 12.Nc3 dxc4 13.Be3 Qb4 14.bxc4 Rad8 15.Bxa7 Qxc4 16.Bf1 Nd5 17.Rdc1 Bf6 18.Nxd5 cxd5 19.Rab1 Qxc2 20.Rxc2 Bc4 21.e3 Ra8 22.Bxc4 Rxa7 23.Bb5 Rfa8 24.a4 g6 25.Rc6 Kg7 26.Kg2 d4 27.e4 h5 28.f4 e5 29.Kf3 h4 30.gxh4 exf4 31.h5 Rh8 32.hxg6 fxg6 33.Rb2 Rh3+ 34.Kxf4 d3 35.Rg2 g5+ 36.Kf5 Rf3+ 37.Ke6 Re7+ 38.Kd6 Rxe4 39.Kc5 Re5+ 40.Kb6 Re7 41.Rd6 Be5 42.Rxg5+ Kf7 43.Rxd3 Rxd3 44.Bxd3 Bxh2 45.Bc4+ Kf6 46.Rg2 Be5 47.a5 Bd4+ 48.Kb5 Kf5 49.a6 Kf4 50.Kc6 Be3 51.Bd5 Ba7 52.Rb2 Bd4 53.Rb1 Be3 54.Rf1+ Ke5 55.Re1 Kd4 56.Rd1+ Kc3 57.Bg2 Bd4 58.Bf1 Rg7 59.Rd3+ Kc4 60.Rg3+ 1-0
2021.02.09 Titled Tuesday 9th Feb
1764647 CM Arias, Juan Cruz (2277) FM Elgersma, Onno (2298) 1-0
1.e4 c5 2.Nc3 e6 3.g3 Nc6 4.Bg2 g6 5.d3 Bg7 6.Be3 d6 7.Qd2 a6 8.Nf3 Rb8 9.d4 cxd4 10.Nxd4 Ne5 11.Qe2 Ne7 12.f4 N5c6 13.Nb3 O-O 14.O-O d5 15.Rad1 Qc7 16.exd5 exd5 17.Nxd5 Nxd5 18.Bxd5 Re8 19.Qf2 Bg4 20.Rd2 Bxb2 21.Bb6 Qc8 22.c4 Bg7 23.Nc5 Ne7 24.Bg2 Nc6 25.Ne4 Qe6 26.Ng5 Qe7 27.Bd5 Rf8 28.Bc5 Qc7 29.Bxf8 Rxf8 30.Re1 Bc3 31.Qe3 Bxd2 32.Qxd2 Ne7 33.Qf2 Nxd5 34.cxd5 Qd6 35.Qd4 h6 36.Ne4 Re8 37.Nf6+ Kf8 38.Rxe8+ 1-0
2021.02.09 Titled Tuesday 9th Feb
1763887 GM Martinez Alcantara, Jose Eduardo (2620) FM Elgersma, Onno (2298) 1-0
1.e4 c5 2.Nf3 e6 3.c3 d5 4.exd5 exd5 5.d4 Nc6 6.Bd3 Nf6 7.h3 Be7 8.O-O O-O 9.dxc5 Bxc5 10.Nbd2 Re8 11.Nb3 Bb6 12.Nfd4 h6 13.Re1 Rxe1+ 14.Qxe1 Qd6 15.Be3 Bc7 16.Nf3 Ne5 17.Nxe5 Qxe5 18.f4 Qd6 19.Nd4 Bd7 20.Rd1 Re8 21.Qe2 h5 22.Qf3 h4 23.Re1 g6 24.Nc2 Nh5 25.Rf1 a6 26.Nd4 b5 27.a3 Kg7 28.Bd2 Ng3 29.Rd1 Nh5 30.Ne2 Bc6 31.Nd4 Bb7 32.Rf1 Bc8 33.Rf2 Ng3 34.Be3 Bb7 35.f5 Ne4 36.fxg6 fxg6 37.Qf7+ 1-0
2021.02.09 Titled Tuesday 9th Feb
1765174 FM Wieczorek, Z (2185) FM Elgersma, Onno (2298) 0-1
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 a6 5.cxd5 exd5 6.Bg5 Be6 7.e3 Bd6 8.Bd3 Nbd7 9.O-O O-O 10.b4 c6 11.a4 Bxb4 12.Bxh7+ Kh8 13.Na2 Bd6 14.Bc2 b5 15.Nc1 Nb6 16.Ne5 Rc8 17.axb5 axb5 18.Ra6 Nc4 19.Nxc6 Rxc6 20.Rxc6 Kg8 21.Nb3 Bg4 22.f3 Bd7 23.Ra6 Bxh2+ 24.Kxh2 Ng4+ 25.fxg4 Qxg5 26.Qf3 Nxe3 27.Bf5 Bxf5 28.gxf5 Nxf1+ 29.Qxf1 Re8 30.Nc5 Qh4+ 31.Kg1 Re1 32.Ra8+ Kh7 33.Nd7 Rxf1+ 34.Kxf1 Qf4+ 35.Kg1 Qxf5 36.Nf8+ Kh6 37.Ra6+ g6 38.Ra7 Qc8 39.Nd7 Qc1+ 40.Kh2 Qf4+ 41.g3 Qxd4 42.Rb7 Qd2+ 43.Kh3 Qd1 44.Nf6 Qh1+ 45.Kg4 Qd1+ 46.Kh3 Qf1+ 47.Kg4 Qxf6 0-1
2021.02.09 Titled Tuesday 9th Feb
1765753 FM Viskelis, D (2223) FM Elgersma, Onno (2298) 1-0
1.e4 c5 2.Nf3 e6 3.c3 d5 4.e5 Nc6 5.d4 Bd7 6.Na3 Rc8 7.Nc2 Qa5 8.Be2 cxd4 9.Ncxd4 Nge7 10.O-O Ng6 11.Nxc6 bxc6 12.Bd3 Qc7 13.Re1 c5 14.h4 Ne7 15.h5 h6 16.Bf4 Nc6 17.c4 d4 18.Nd2 Be7 19.Qf3 Rb8 20.b3 a5 21.Qg3 Kf8 22.Ne4 Nb4 23.Rad1 a4 24.Nf6 axb3 25.axb3 Na2 26.Nh7+ Rxh7 27.Bxh7 Nc3 28.Bxh6 Ke8 29.Qxg7 Kd8 30.Qxf7 Nxd1 31.Bg6 Kc8 32.Rxd1 Bd8 33.Bf4 Rxb3 34.h6 d3 35.h7 d2 36.h8=Q Rc3 37.Rxd2 Rc1+ 38.Kh2 1-0
2021.02.09 Titled Tuesday 9th Feb
1764988 FM Elgersma, Onno (2298) Dzhaparov, Medet (1749) 0-1
1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.Nc3 Nd4 5.Bc4 Bc5 6.O-O d6 7.h3 O-O 8.d3 Be6 9.Bg5 Bxc4 10.dxc4 c6 11.Qd3 h6 12.Bxf6 Qxf6 13.Nxd4 Bxd4 14.Nd1 Rad8 15.c3 Bb6 16.a4 a6 17.a5 Ba7 18.Ne3 Qe6 19.Nf5 Kh7 20.Qf3 g6 21.Ng3 Qxc4 22.Rad1 Qe6 23.h4 d5 24.h5 Kg7 25.Kh2 Qf6 26.Qg4 Qf4 27.Qxf4 exf4 28.Ne2 dxe4 29.hxg6 fxg6 30.f3 e3 31.g3 Bb8 32.gxf4 g5 33.Kh3 gxf4 34.Nd4 Kf6 35.Kh4 c5 36.Ne2 Be5 37.b4 cxb4 38.cxb4 Kg6 39.Rg1+ Kf5 40.Kh5 Rxd1 41.Rxd1 Rg8 42.Rd5 Rg2 43.Nd4+ Kf6 44.Kh4 Bxd4 45.Rxd4 Kf5 46.Rd5+ Ke6 47.Rd8 Kf6 48.Kh3 Rg3+ 49.Kh4 Rxf3 50.Kg4 Rf2 51.Re8 e2 0-1
2021.02.09 Titled Tuesday 9th Feb
1765517 FM Elgersma, Onno (2298) FM Akhayan, R (2259) 0-1
1.e4 e6 2.Nf3 d5 3.Nc3 Nf6 4.Qe2 dxe4 5.Nxe4 Nc6 6.g3 Be7 7.Bg2 O-O 8.O-O e5 9.d3 Bg4 10.c3 Qd7 11.Nxf6+ Bxf6 12.Rd1 Rad8 13.Be3 Rfe8 14.a4 h6 15.a5 Nd4 16.Nxd4 Bxe2 17.Nxe2 Qg4 18.Kf1 b6 19.axb6 axb6 20.Ra7 c5 21.h3 Qf5 22.g4 Qg6 23.Bc6 Re7 24.Ra4 Bg5 25.Be4 Qf6 26.Bxg5 hxg5 27.Ng3 g6 28.Kg2 Kg7 29.Ra7 Rxa7 0-1
2021.02.09 Titled Tuesday 9th Feb
1764045 FM Elgersma, Onno (2298) IM Fiorito, F (2380) 1-0
1.e4 c5 2.Nf3 Nc6 3.Bb5 g6 4.c3 Nf6 5.Qe2 Bg7 6.O-O O-O 7.h3 e5 8.a3 d6 9.b4 cxb4 10.axb4 a6 11.Bxc6 bxc6 12.d3 Be6 13.Nbd2 Qc7 14.Nc4 Rfd8 15.Be3 Rdb8 16.Bg5 h6 17.Bd2 Nd7 18.Rfb1 d5 19.Na5 dxe4 20.dxe4 c5 21.Be3 cxb4 22.cxb4 Bf8 23.Rc1 Qd6 24.Nc6 Rb7 25.Rxa6 Rxa6 26.Qxa6 Rc7 27.b5 Nc5 28.Bxc5 Qxc5 29.Rxc5 1-0
2021.02.09 Titled Tuesday 9th Feb
1764336 FM Elgersma, Onno (2298) Butti, E (2065) 1-0
1.e4 c5 2.Nf3 d6 3.Bb5+ Bd7 4.a4 Nc6 5.Nc3 Nf6 6.O-O e6 7.d4 cxd4 8.Nxd4 Be7 9.Be3 O-O 10.f4 Qc7 11.Qf3 a6 12.Bd3 Rfe8 13.Rae1 Nb4 14.g4 Bc8 15.g5 Nd7 16.Qh5 g6 17.Qh6 e5 18.fxe5 Nxe5 19.Bf4 Qc5 20.Ne2 Nbxd3 21.cxd3 Nxd3 22.Be3 Bf8 23.Qh4 Nxe1 24.Rxf7 h5 25.Qf2 Bg4 26.Qf6 Qe5 27.Qxg6+ Bg7 28.Bf4 1-0
2021.02.09 Titled Tuesday 9th Feb
1765363 WGM Hrabinska, M (2235) FM Elgersma, Onno (2298) 1-0
1.e4 c5 2.b4 b6 3.bxc5 bxc5 4.Nc3 Bb7 5.Rb1 Bc6 6.Bc4 e6 7.Nf3 Nf6 8.Qe2 Be7 9.O-O O-O 10.e5 Ng4 11.d4 Qa5 12.Bd2 cxd4 13.Nd5 Qd8 14.Nxe7+ Qxe7 15.Bb4 Qd8 16.Bxf8 Qxf8 17.Nxd4 Nh6 18.Rfd1 Qc5 19.Nxc6 Nxc6 20.Rxd7 Nxe5 21.Bd5 Nxd7 22.Bxa8 g6 23.Be4 Nb6 24.g3 Qd4 25.Qd3 Qc5 26.c3 Qa5 27.Qd8+ Kg7 28.Qd4+ f6 29.a4 Qg5 30.Qe3 Qe5 31.Bf3 Qc7 32.a5 Nd5 33.Qxe6 1-0
2021.02.02 Titled Tuesday 2nd Feb
1771274 IM Playa, M (2376) FM Elgersma, Onno (2298) 0-1
1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 5.Nc3 a6 6.Be3 Nf6 7.Bd3 h5 8.Qd2 Bb4 9.O-O-O Qa5 10.Nb3 Qc7 11.Kb1 b5 12.f4 Bb7 13.e5 Ng4 14.Bc5 Rc8 15.Bxb4 Nxb4 16.Nxb5 axb5 17.Qxb4 Nf2 18.Rhe1 Nxd1 19.Rxd1 Bd5 20.Rd2 Bxb3 21.axb3 Qc5 22.Qxb5 Qg1+ 23.Bf1 O-O 24.Qe2 Ra8 25.Rd1 Qa7 26.c3 Rfc8 27.Qe4 Qa2+ 28.Kc2 Rab8 29.Bc4 Qa7 30.Bd3 Qb6 31.Qh7+ Kf8 32.b4 Qf2+ 33.Rd2 Qxf4 34.Qh8+ Ke7 35.Qxg7 Rg8 36.Qh7 Rh8 37.Qg7 Rbg8 38.Qf6+ Qxf6 39.exf6+ Kxf6 40.b5 d5 41.b3 Rb8 42.c4 Rhc8 0-1
2021.02.02 Titled Tuesday 2nd Feb
1772818 FM Elgersma, Onno (2298) CM Ochedzan, Tymon (2180) 1-0
1.Nf3 Nf6 2.e3 g6 3.b3 Bg7 4.Bb2 O-O 5.Be2 b6 6.d4 Bb7 7.O-O d6 8.c4 c5 9.Nbd2 Nbd7 10.Qc2 Qc7 11.a3 e5 12.d5 Ne8 13.b4 f5 14.Ng5 Qc8 15.Ne6 Rf7 16.e4 Bh8 17.exf5 gxf5 18.f4 Nc7 19.Bh5 Rf6 20.Nxc7 Qxc7 21.fxe5 Nxe5 22.Rxf5 Raf8 23.Raf1 Bc8 24.Rg5+ Bg7 25.Rxf6 Rxf6 26.Ne4 Rf8 27.Nxd6 Qxd6 28.Bxe5 Qxe5 29.Rxe5 Bxe5 30.g3 Bh3 31.Be2 Bd4+ 32.Kh1 Bf5 33.Bd3 Bh3 34.Qe2 1-0
2021.02.02 Titled Tuesday 2nd Feb
1772335 FM Suvorov, Luca (2279) FM Elgersma, Onno (2298) 1-0
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.cxd5 exd5 5.Bg5 c6 6.e3 Bd6 7.Bd3 O-O 8.Qc2 h6 9.Bh4 Re8 10.Nge2 a5 11.O-O-O Na6 12.Bf5 Bxf5 13.Qxf5 Qd7 14.Qxd7 Nxd7 15.Rhe1 Nb6 16.Bg3 Bb4 17.a3 Bf8 18.Nf4 Nc4 19.Nd3 Rad8 20.Ne5 Nd6 21.f3 f5 22.Ng6 Nc4 23.Nxf8 Rxf8 24.e4 fxe4 25.fxe4 dxe4 26.Rxe4 Rfe8 27.Rxe8+ Rxe8 28.d5 cxd5 29.Rxd5 Ne3 30.Rxa5 Nxg2 31.Rb5 h5 32.Rxh5 b6 33.b4 Rc8 34.Kb2 Ne3 35.Nd5 Rc2+ 36.Kb3 Re2 37.Re5 Nc2 38.Rxe2 Nd4+ 39.Kc4 Nxe2 40.Nxb6 Nxg3 41.hxg3 Nc7 42.a4 1-0
2021.02.02 Titled Tuesday 2nd Feb
1772185 FM Elgersma, Onno (2298) FM Orantes Taboada, Francisco (2286) 0-1
1.e4 c5 2.Nf3 Nc6 3.Bb5 a6 4.Bxc6 dxc6 5.O-O Qc7 6.d3 e5 7.Nc3 Bd6 8.a4 a5 9.Nd2 Ne7 10.Nc4 Ng6 11.Ne3 Be6 12.Nf5 O-O 13.h4 f6 14.h5 Nf4 15.Bxf4 exf4 16.Qg4 Kh8 17.Qh4 Be5 18.Rab1 Rad8 19.h6 g6 20.Ng7 Bg8 21.g3 fxg3 22.f4 Bd4+ 23.Kg2 c4 24.Qxg3 cxd3 25.cxd3 Bb3 26.Rbc1 Qf7 27.Ne2 Bxb2 28.Rb1 Bd4 29.Nxd4 Rxd4 30.f5 g5 31.e5 Qd5+ 32.Kg1 Rxd3 33.Qf2 Qxe5 34.Rfe1 Rg3+ 35.Kh2 Re3+ 36.Kg1 Rxe1+ 37.Qxe1 Qf4 38.Qf2 Qg4+ 39.Kh2 Bd5 40.Rxb7 Qe4 41.Rb1 Qe5+ 42.Qg3 Qd4 43.Rf1 Qd2+ 44.Rf2 Qb4 45.Ne6 Bxe6 46.fxe6 Qe7 47.Qe3 Kg8 48.Re2 f5 49.Qe5 Rf6 50.Qb8+ Rf8 51.Qe5 Rf6 52.Kg2 Kf8 53.Qb8+ Qe8 54.Qd6+ Qe7 55.Qxc6 Rxh6 56.Qc8+ Kg7 57.Qd7 Kf6 58.Qd4+ Kg6 59.Qe5 Rh4 60.Rf2 Rg4+ 61.Kh3 Rh4+ 62.Kg3 Qa3+ 63.Rf3 f4+ 64.Kg2 Qa2+ 65.Rf2 Rg4+ 66.Kf3 Rg3+ 67.Ke4 Re3+ 68.Kd4 Rxe5 69.Kxe5 Qxf2 70.e7 Qe3+ 71.Kd6 Qxe7+ 0-1
2021.02.02 Titled Tuesday 2nd Feb
1771438 FM Ashiev, E (2202) FM Elgersma, Onno (2298) 0-1
1.d4 d5 2.c4 e6 3.Nf3 Nf6 4.Nc3 a6 5.cxd5 exd5 6.Bg5 Be6 7.e3 Nbd7 8.Bd3 Bd6 9.O-O c6 10.e4 dxe4 11.Nxe4 Be7 12.Ng3 O-O 13.Re1 h6 14.Bf4 Bb4 15.Re2 Bg4 16.Rc2 Re8 17.h3 Be6 18.a3 Bf8 19.Re2 Qb6 20.Be5 Bd5 21.Nh4 Rad8 22.Qc2 Qb3 23.Rae1 Qxc2 24.Bxc2 g6 25.Re3 Bg7 26.Kh2 h5 27.f4 Bh6 28.R3e2 b5 0-1
2021.02.02 Titled Tuesday 2nd Feb
1772979 FM Gago Padreny, I (2247) FM Elgersma, Onno (2298) 0-1
1.d4 d5 2.c4 e6 3.Nf3 Nf6 4.Nc3 a6 5.cxd5 exd5 6.Bf4 Be6 7.e3 Bd6 8.Bxd6 Qxd6 9.Bd3 O-O 10.O-O Nbd7 11.h3 Rfe8 12.Qc2 Rad8 13.b4 c6 14.a4 Ra8 15.Rfc1 Rec8 16.Rab1 b6 17.a5 bxa5 18.bxa5 c5 19.Qa2 c4 20.Bc2 Rab8 21.Na4 Ne4 22.Rb2 Rxb2 23.Qxb2 Rb8 24.Qa1 f5 25.Bxe4 fxe4 26.Nd2 Qb4 27.Qa2 Qxa5 28.Kf1 Rb4 29.Ra1 Nb6 30.Nc5 Qxa2 31.Rxa2 Bc8 32.Nxa6 Bxa6 33.Rxa6 c3 34.Nxe4 c2 35.Ke2 c1=Q 0-1
2021.02.02 Titled Tuesday 2nd Feb
1771740 FM Elgersma, Onno (2298) GM Studer, N (2579) 0-1
1.Nf3 d5 2.e3 Nf6 3.b3 Bf5 4.Bb2 h6 5.d4 e6 6.Bd3 Ne4 7.O-O Nd7 8.c4 c6 9.Qc2 Bh7 10.Nfd2 f5 11.f3 Nxd2 12.Nxd2 Bd6 13.e4 O-O 14.Rae1 Bf4 15.g3 Qg5 16.Nb1 Nf6 17.e5 Nh5 18.Qf2 Nxg3 19.hxg3 Bxg3 20.Qg2 f4 21.Bxh7+ Kxh7 22.Re2 Qh4 23.Qh1 Qg5 24.Qh3 Rf5 25.Qg4 Qe7 26.Rg2 Rg5 27.Qh3 Rf8 28.Nc3 Rff5 29.Re2 Rh5 30.Qg2 Rfg5 31.Bc1 Bh2+ 32.Kh1 Rxg2 33.Rxg2 Bg3+ 34.Kg1 Qh4 0-1
2021.01.26 Titled Tuesday 26th Jan
1776962 FM Elgersma, Onno (2298) GM Karthikeyan, M2 (2606) 0-1
1.e4 c5 2.Nf3 Nc6 3.Bb5 g6 4.c3 Bg7 5.O-O Nf6 6.Re1 O-O 7.h3 e5 8.a3 Re8 9.b4 d6 10.Bc4 Be6 11.Bxe6 Rxe6 12.d3 h6 13.b5 Ne7 14.c4 Nh7 15.Nc3 f5 16.Nd5 f4 17.Nh2 g5 18.Qg4 Rg6 19.h4 Nxd5 20.cxd5 Qe8 21.h5 Rf6 22.Qh3 Qxb5 23.Ng4 Rf7 24.Qf3 Qd7 25.Rb1 b5 26.Qh3 a5 27.Bd2 b4 28.axb4 axb4 29.Ra1 Rb8 30.Reb1 Nf6 31.Nxf6+ Bxf6 32.Qxd7 Rxd7 33.Ra6 g4 34.f3 Kf7 35.fxg4 Rg8 36.Rba1 Rxg4 37.Ra7 Re7 38.Rxe7+ Bxe7 39.Be1 c4 40.dxc4 f3 41.g3 Rxe4 42.Kf2 Rxc4 43.Kxf3 Rd4 44.Ra7 Rxd5 45.Bxb4 Ke6 46.Be1 Bg5 47.Ra8 Rd3+ 48.Ke2 Re3+ 49.Kf2 Rb3 50.Re8+ Kf5 51.Rf8+ Kg4 52.Kf1 d5 53.Re8 e4 54.Re5 Rd3 55.Ke2 Re3+ 56.Kf1 Rf3+ 57.Ke2 Rf5 58.Rxf5 Kxf5 59.Bf2 Kg4 60.Be1 Kxh5 0-1
2021.01.26 Titled Tuesday 26th Jan
1778507 IM Agasiyev, Ka (2441) FM Elgersma, Onno (2298) 1-0
1.d4 d5 2.c4 e6 3.Nf3 Nf6 4.g3 Be7 5.Bg2 O-O 6.O-O dxc4 7.Qa4 a6 8.Qxc4 b5 9.Qc2 Bb7 10.Bf4 Nc6 11.Rd1 Nb4 12.Qc1 Rc8 13.a3 Nbd5 14.b4 Nxf4 15.Qxf4 Bd6 16.Qd2 Ne4 17.Qc2 Qf6 18.Nc3 Nxc3 19.Qxc3 Bxf3 20.Bxf3 e5 21.Rac1 Rfe8 22.Qc6 exd4 23.Qxa6 Rb8 24.Qc6 Red8 25.Qe4 Re8 26.Qxd4 Qxd4 27.Rxd4 Be5 28.Rd3 Red8 29.Re3 Bb2 30.Rc2 Bd4 31.Re7 Bb6 32.Bc6 Kf8 33.Re5 Bd4 34.Rxb5 Rxb5 35.Bxb5 Bb6 36.a4 Rd1+ 37.Kg2 Bd4 38.Rxc7 Rb1 39.e3 Be5 40.Rc8+ 1-0
2021.01.26 Titled Tuesday 26th Jan
1776237 GM Svane, Rasmus (2613) FM Elgersma, Onno (2298) 1-0
1.Nf3 d5 2.g3 Nf6 3.Bg2 e6 4.O-O Be7 5.c4 O-O 6.b3 b6 7.d4 Bb7 8.Nc3 dxc4 9.bxc4 c5 10.d5 exd5 11.Nh4 Ne4 12.Nxd5 Nd6 13.Bf4 Nxc4 14.Nxe7+ Qxe7 15.Nf5 Qf6 16.Bxb7 Qxf5 17.Bxa8 Nd7 18.Qd5 1-0
2021.01.26 Titled Tuesday 26th Jan
1776500 FM Elgersma, Onno (2298) WFM Kairbekova, Amina (2132) 1-0
1.e4 c5 2.Nf3 Nc6 3.Bb5 g6 4.h3 Bg7 5.c3 Nf6 6.Qe2 O-O 7.O-O d6 8.Rd1 Bd7 9.d4 cxd4 10.cxd4 Rc8 11.Nc3 a6 12.Bxc6 Bxc6 13.d5 Bd7 14.a4 Qb6 15.a5 Qb4 16.Rd4 Qc5 17.Be3 Nh5 18.g4 Bxd4 19.Bxd4 Nf4 20.Qe3 Nxh3+ 21.Kg2 Qb4 22.Kxh3 Qxb2 23.Rb1 Qa3 24.Qh6 Rxc3 25.Qg7# 1-0
2021.01.26 Titled Tuesday 26th Jan
1777269 FM Seletsky, G (2272) FM Elgersma, Onno (2298) 0-1
1.e4 c5 2.Nc3 e6 3.d3 d5 4.f4 Nf6 5.Nf3 Nc6 6.Be2 Be7 7.O-O O-O 8.Qe1 a6 9.Kh1 b5 10.Bd1 Bb7 11.e5 Nd7 12.Ne2 b4 13.d4 cxd4 14.Nexd4 Nc5 15.Be3 Ne4 16.c3 bxc3 17.bxc3 Rc8 18.Rc1 Na5 19.Bb3 Nc4 20.Bxc4 dxc4 21.Nd2 Nxd2 22.Qxd2 Qd5 23.Nf3 Qxd2 24.Nxd2 Bd5 25.Rb1 Rb8 26.Kg1 Ba3 27.Kf2 Rfd8 28.Bd4 h6 29.Rxb8 Rxb8 30.Rb1 Rxb1 31.Nxb1 Bc1 32.g3 Be4 0-1
2021.01.26 Titled Tuesday 26th Jan
1778307 FM Elgersma, Onno (2298) GM Wagner, De (2581) 1-0
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.d3 d6 6.O-O Be7 7.c4 O-O 8.h3 Nd7 9.Bxc6 bxc6 10.Nc3 Re8 11.Re1 c5 12.Nd5 Bf8 13.Nh2 Nb8 14.f4 exf4 15.Bxf4 Nc6 16.Rf1 Nd4 17.Nf3 c6 18.Nc3 g6 19.Nxd4 cxd4 20.Ne2 Bg7 21.Qd2 a5 22.Bg5 Qb6 23.Ng3 Ra7 24.Bf6 Qc5 25.Qf4 Bxf6 26.Qxf6 Qe5 27.Ne2 c5 28.Qf2 a4 29.Nf4 Be6 30.Rab1 Rb8 31.Qc2 Kg7 32.Qd2 Rab7 33.Ne2 Rb4 34.Kh1 h6 35.Nf4 R8b7 36.Qf2 Bc8 37.Nd5 Be6 38.Nxb4 Rxb4 39.b3 axb3 40.Rxb3 Ra4 41.a3 Ra5 42.Rb7 h5 43.Rb3 Ra4 44.Qb2 Ra6 45.Rb6 1-0
2021.01.26 Titled Tuesday 26th Jan
1777042 IM Zemerov, V (2268) FM Elgersma, Onno (2298) 1-0
1.Nf3 c5 2.g3 Nf6 3.b3 e6 4.Bb2 d5 5.Bg2 Nc6 6.d3 Be7 7.O-O O-O 8.Nbd2 a6 9.e4 d4 10.e5 Nd5 11.a4 Rb8 12.Qe2 b5 13.axb5 axb5 14.Rfe1 Bb7 15.h4 Qb6 16.Reb1 Ra8 17.Ne4 Ncb4 18.Nfg5 h6 19.Nh3 Rxa1 20.Bxa1 Ra8 21.Nf4 Nxf4 22.gxf4 Ra2 23.Bb2 Qa7 24.Kh2 Nd5 25.Qg4 Rxb2 26.Rg1 Bf8 27.Bf3 Rxc2 28.Rg2 Qb8 29.Nd6 Bc6 30.f5 Ne3 31.fxe3 1-0
2021.01.26 Titled Tuesday 26th Jan
1777841 FM Stevens, C CAN (2260) FM Elgersma, Onno (2298) 1-0
1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 5.Nc3 a6 6.Be2 Nf6 7.O-O h5 8.Kh1 Qc7 9.f4 Bb4 10.e5 Ng4 11.Ne4 Qd8 12.Nxc6 bxc6 13.Bxg4 hxg4 14.Qxg4 Qh4 15.Qxh4 Rxh4 16.Be3 Be7 17.Bc5 f5 18.Bxe7 Kxe7 19.Nd6 a5 20.g3 Rh6 21.h4 Ba6 22.c4 Rg6 23.Kh2 Rb8 24.b3 Rb4 25.Rf3 Rh6 26.a3 Rb6 27.Kg1 Rh8 28.Rc1 Rhb8 29.Rcc3 c5 30.a4 Rb4 31.Rfd3 R8b6 32.Nb5 Bxb5 33.cxb5 c4 34.Rxc4 Rb7 35.Rxb4 axb4 36.Rd4 Rc7 37.Rxb4 Rc1+ 38.Kh2 Rc2+ 39.Kh3 1-0
2021.01.26 Titled Tuesday 26th Jan
1778127 FM Elgersma, Onno (2298) IM Playa, M (2376) 1-0
1.e4 e6 2.Nf3 d5 3.Nc3 Nf6 4.Qe2 Be7 5.g3 O-O 6.Bg2 c5 7.O-O d4 8.Nb1 Nc6 9.d3 e5 10.a4 Bg4 11.h3 Bxf3 12.Bxf3 Nd7 13.Bg2 Bg5 14.f4 exf4 15.gxf4 Bh4 16.Na3 Re8 17.Nc4 Nb6 18.Na3 Nxa4 19.Qg4 Re6 20.f5 Ne5 21.fxe6 Nxg4 22.exf7+ Kf8 23.hxg4 Bg3 24.g5 Nb6 25.Bd2 Qd6 26.Rf5 Bh2+ 27.Kh1 g6 28.Rf3 Be5 29.Raf1 Nd7 30.Nc4 Qe7 31.Rh3 Kg7 32.Na5 Nf8 33.Nc4 Nd7 34.Rhf3 Rf8 35.Na5 Nb8 36.Nc4 b6 37.c3 dxc3 38.bxc3 b5 39.Nxe5 Qxe5 40.d4 Qxe4 41.d5 Nd7 42.c4 b4 43.Bc1 Ne5 44.Bb2 Qh4+ 45.Kg1 Qxg5 46.R3f2 1-0
2021.01.26 Titled Tuesday 26th Jan
1777623 FM Elgersma, Onno (2298) WFM Novikova, Galina (2073) 1-0
1.e4 e6 2.Nf3 d5 3.Nc3 Nf6 4.Qe2 d4 5.Nb1 c5 6.d3 Nc6 7.g3 Be7 8.Bg2 O-O 9.O-O b6 10.a4 Bb7 11.Nfd2 a6 12.f4 b5 13.Nf3 Qb6 14.Kh1 Rac8 15.h3 c4 16.Na3 cxd3 17.cxd3 Bxa3 18.bxa3 bxa4 19.Bd2 Na5 20.Bb4 Rfd8 21.Ne5 Nb3 22.Rab1 Rc7 23.g4 Rdc8 24.Nc4 Qb5 25.Nd6 Rc2 26.Qf3 Qc6 27.Nxc8 Qxc8 28.g5 Nd7 29.f5 Ne5 30.Qg3 Nc6 31.fxe6 Qxe6 32.Bd6 Nd2 33.Rfc1 Rxc1+ 34.Rxc1 h6 35.gxh6 Qxh6 36.Bf4 Qe6 37.Bxd2 Qa2 38.Bh6 g6 39.Rf1 1-0
2021.01.26 Titled Tuesday 26th Jan
1778679 FM Yeletsky, Ivan (2448) FM Elgersma, Onno (2298) 0-1
1.d4 d5 2.Bf4 Nf6 3.e3 e6 4.Nd2 c5 5.Ngf3 Nc6 6.c3 Nh5 7.Bg5 f6 8.Bh4 cxd4 9.exd4 Bd6 10.Bb5 Qb6 11.a4 a6 12.Bxc6+ bxc6 13.O-O Nf4 14.b4 a5 15.bxa5 Qxa5 16.Nb3 Qxc3 17.Bg3 g5 18.Rc1 Qb4 19.a5 Ba6 20.Re1 Kd7 21.Bxf4 gxf4 22.Rb1 Qc3 23.Rc1 Qd3 24.Nfd2 Rhg8 25.Nc5+ Bxc5 26.dxc5 Rg7 27.Nf3 e5 28.Nh4 Qh3 29.g3 fxg3 30.fxg3 Qxh4 31.Qf3 Rag8 32.Re3 Qf4 33.Rb1 Qxf3 34.Rxf3 e4 35.Rxf6 e3 36.Rb6 e2 37.Kf2 Re7 38.Ke1 Bb5 39.a6 Rc8 40.a7 Ke8 41.Rb8 Rxa7 42.Rxc8+ Kd7 43.Rff8 Ra1+ 0-1
2021.01.19 Titled Tuesday 19th Jan
1781036 CM Gosh, C (2061) FM Elgersma, Onno (2298) 0-1
1.e4 c5 2.Nf3 e6 3.c3 d5 4.e5 Nc6 5.d4 Bd7 6.Bd3 Rc8 7.a3 c4 8.Bc2 Na5 9.Nbd2 Ne7 10.O-O Nf5 11.Re1 Qb6 12.Rb1 Be7 13.b3 cxb3 14.Nxb3 Nxb3 15.Rxb3 Qc7 16.Bd2 b6 17.Qa1 Ba4 18.Rb2 Bxc2 19.Rxc2 h5 20.h3 h4 21.Rcc1 Rg8 22.a4 g5 23.Nh2 Qc6 24.Ng4 Kd7 25.a5 b5 26.a6 Rb8 27.Ne3 Nxe3 28.Bxe3 g4 29.hxg4 Rxg4 30.f3 Rg6 31.Rb1 Qc4 32.Red1 Qe2 33.Bf2 h3 34.g3 Qxf3 0-1
2021.01.19 Titled Tuesday 19th Jan
1781555 GM Visakh, N R (2516) FM Elgersma, Onno (2298) 1-0
1.c4 e6 2.g3 d6 3.Bg2 d5 4.Nf3 Nf6 5.O-O Be7 6.d4 O-O 7.Qc2 a6 8.Nbd2 Nc6 9.a3 a5 10.Rd1 a4 11.e4 dxe4 12.Nxe4 Nxe4 13.Qxe4 Na5 14.d5 Nb3 15.Rb1 Qe8 16.Bf4 exd5 17.cxd5 Bd6 18.Qxe8 Rxe8 19.Bxd6 cxd6 20.Nd4 Nxd4 21.Rxd4 Bf5 22.Rc1 1-0
2021.01.19 Titled Tuesday 19th Jan
1780580 FM Elgersma, Onno (2298) GM Mamedyarov, S (2770) 0-1
1.e4 c6 2.Nc3 d5 3.d4 dxe4 4.Nxe4 Nf6 5.Nxf6+ exf6 6.c3 Bd6 7.Bd3 O-O 8.Qc2 Re8+ 9.Ne2 h5 10.Be3 Nd7 11.O-O-O Nf8 12.h3 h4 13.Kb1 Be6 14.c4 Rc8 15.Nc3 Ng6 16.Rhe1 Qa5 17.c5 Bf8 18.Bxg6 fxg6 19.Qxg6 b5 20.d5 Bf7 21.Qd3 b4 22.Ne4 Bxd5 23.Nxf6+ gxf6 24.Qg6+ Bg7 25.Bh6 Qxa2+ 26.Kc1 Qc4+ 27.Kb1 Be4+ 28.Rxe4 Qxe4+ 0-1
2021.01.19 Titled Tuesday 19th Jan
1780903 CM Bouchet, S (2180) FM Elgersma, Onno (2298) 0-1
1.e4 c5 2.c3 e6 3.d4 d5 4.e5 Nc6 5.Nf3 Bd7 6.Be2 f6 7.O-O Qb6 8.Na3 a6 9.Nc2 Qc7 10.Re1 O-O-O 11.Be3 c4 12.b3 b5 13.a4 cxb3 14.Na3 Bxa3 15.Rxa3 Na5 16.Qa1 Nc4 17.Rxb3 bxa4 18.Rb4 Bb5 19.Rxa4 Bxa4 20.Qxa4 Kb7 21.Nd2 Qc6 22.Qa2 Nxd2 23.Bxd2 Ne7 24.c4 dxc4 25.Bxc4 Nd5 26.exf6 gxf6 27.h3 Rhg8 28.Kh1 Nb4 29.Bxa6+ Nxa6 30.Rb1+ Ka7 31.f3 Rb8 32.Ra1 Rb6 33.Be3 Qd5 34.Qc2 Rgb8 35.Qxh7+ R8b7 36.Rc1 Rxh7 0-1
2020.12.29 Titled Tuesday 29th Dec
1796872 FM Elgersma, Onno (2298) IM Borsuk, K (2413) 0-1
1.Nf3 b6 2.e4 Bb7 3.Bc4 e6 4.Nc3 d5 5.Bb5+ c6 6.Bd3 Nf6 7.O-O Be7 8.Re1 a6 9.e5 Nfd7 10.Ne2 c5 11.c3 Nc6 12.Ng3 h5 13.Qe2 h4 14.Nf1 Qc7 15.h3 c4 16.Bc2 Nc5 17.N1h2 b5 18.Ng4 d4 19.Nxd4 Rd8 20.Nf3 Nd3 21.Bxd3 Rxd3 22.b3 O-O 23.bxc4 bxc4 24.a4 Na5 25.Nd4 Rd8 26.Ba3 R8xd4 27.Bxe7 Rxg4 28.Qxg4 Qxe7 29.Rab1 g6 30.Qf4 Kg7 31.Rb6 g5 32.Qf6+ Qxf6 33.exf6+ Kxf6 34.Re2 Kf5 35.f3 f6 36.Kf2 e5 37.Ke1 Rd8 38.Re3 Rc8 39.Re2 Rc6 40.Rxc6 Bxc6 41.Kf2 Bxa4 42.Re1 Nb3 43.Ke3 Bb5 44.Rb1 a5 45.Rb2 a4 46.Ra2 Ke6 47.Ra3 f5 48.Ke2 f4 49.Kd1 Kf5 50.Ra2 e4 51.Ra3 exf3 52.gxf3 Ke5 53.Ke2 Kd5 54.Kd1 Bd7 55.Ke2 Nc5 56.Ra1 Bxh3 57.Rg1 Ne6 58.Ra1 Bf5 59.Rxa4 Bd3+ 60.Kf2 Ke5 61.Ra5+ Kf6 62.Ra8 Ng7 63.Ra6+ Kf7 64.Ra7+ Kg6 65.Kg2 Nf5 66.Ra6+ Kh5 67.Rf6 g4 68.fxg4+ Kxg4 69.Rf8 Be4+ 70.Kf2 h3 71.Rg8+ Kh5 72.Rh8+ Nh6 73.Rf8 h2 74.Rxf4 h1=Q 75.Rf5+ Bxf5 76.d3 Ng4+ 77.Kg3 Qh2+ 78.Kf3 Qf2# 0-1
2020.12.29 Titled Tuesday 29th Dec
1798189 FM Siniauski, Artsiom (2275) FM Elgersma, Onno (2298) 1/2-1/2
1.e4 c5 2.Nf3 e6 3.c4 Nc6 4.Be2 Nf6 5.Nc3 a6 6.O-O Qb6 7.d3 Be7 8.Bf4 d6 9.Rb1 O-O 10.h3 Nd7 11.Qd2 Nde5 12.Be3 Nxf3+ 13.Bxf3 Bf6 14.Ne2 Qb4 15.Qd1 Ne5 16.a3 Qa5 17.Ng3 b5 18.Be2 Rb8 19.f4 Nc6 20.Kh2 Nd4 21.Bg4 Bb7 22.Nh5 Be7 23.Bxd4 cxd4 24.f5 bxc4 25.dxc4 Qe5+ 26.Kh1 Bxe4 27.Re1 exf5 28.Bf3 Bh4 29.Re2 d3 30.Re3 Rxb2 31.Rxb2 Qxb2 32.Bxe4 fxe4 33.Rxe4 Qc2 34.Qg4 g6 35.Qxh4 Qd1+ 36.Re1 Qxh5 37.Qxh5 gxh5 38.Rd1 Rc8 39.Rxd3 Rxc4 40.Rxd6 Ra4 41.Rd3 Kg7 42.Kh2 Kg6 43.Kg3 h4+ 44.Kf3 f5 45.Rc3 h5 46.Rb3 Kg5 47.Rc3 Rd4 48.Ke3 Re4+ 49.Kf3 a5 50.Rc8 Ra4 51.Rc3 Re4 52.Rc8 Ra4 53.Rc3 Kf6 54.Ke3 Ke6 55.Rb3 Re4+ 56.Kf3 Rd4 57.Ke3 Rc4 58.Kf3 Ke5 59.Rb5+ Kf6 60.Rb6+ Kg5 61.Rb3 Ra4 62.Rc3 1/2-1/2
2020.12.29 Titled Tuesday 29th Dec
1797934 FM De Silva, L M S T (2085) FM Elgersma, Onno (2298) 0-1
1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 5.Be2 Nf6 6.Nc3 Bb4 7.Qd3 d5 8.Nxc6 bxc6 9.O-O O-O 10.e5 Nd7 11.f4 f5 12.a3 Be7 13.Nd1 Nc5 14.Qh3 Ne4 15.Nf2 Rb8 16.c3 Bc5 17.Be3 Bxe3 18.Qxe3 Rxb2 19.Nxe4 fxe4 20.Rab1 Qb6 21.Qxb6 Rxb6 22.Rxb6 axb6 23.a4 Bd7 24.Rb1 Ra8 25.Rxb6 Rxa4 26.Rb7 Be8 27.Bg4 e3 28.Bxe6+ Kf8 29.Kf1 Rxf4+ 30.Ke1 Re4 31.Bf5 Rxe5 32.Bxh7 c5 33.Ke2 d4 34.cxd4 cxd4 35.h3 Bb5+ 36.Ke1 d3 37.Rxb5 Rxb5 38.Bxd3 Rb2 39.Be2 Ke7 0-1
2020.12.29 Titled Tuesday 29th Dec
1796984 IM Sai, KG (2405) FM Elgersma, Onno (2298) 1-0
1.e4 c5 2.Nf3 e6 3.Nc3 Nc6 4.d4 cxd4 5.Nxd4 a6 6.Nxc6 bxc6 7.Bd3 Qc7 8.O-O Nf6 9.f4 d5 10.e5 Nd7 11.Ne2 g6 12.c4 Bc5+ 13.Kh1 O-O 14.Ng3 Rb8 15.Qg4 Rb4 16.b3 f5 17.Qg5 Qd8 18.Qh6 Rb8 19.Bd2 Bd4 20.Rac1 Nc5 21.Bb1 Ne4 22.Nxe4 dxe4 23.Rfd1 c5 24.Be3 Qb6 25.Bxd4 cxd4 26.c5 Qb4 27.Rc4 Qa3 28.Rcxd4 Qxc5 29.Rd8 Bb7 30.R8d7 Rf7 31.Rxf7 Kxf7 32.Qxh7+ Ke8 33.Qg8+ Qf8 34.Qxe6+ Qe7 35.Qxg6+ Qf7 36.Qd6 Rc8 37.e6 Qe7 38.Qe5 e3 39.Bxf5 1-0
2020.12.29 Titled Tuesday 29th Dec
1796508 IM Bodnaruk, A (2423) FM Elgersma, Onno (2298) 0-1
1.e4 c5 2.Nc3 e6 3.Nge2 Nf6 4.g3 Nc6 5.Bg2 Be7 6.d4 cxd4 7.Nxd4 a6 8.O-O h5 9.Nxc6 bxc6 10.e5 Ng4 11.Qd4 Qa5 12.Ne4 Qxe5 13.Qd3 Qf5 14.Qe2 d5 15.Nc3 a5 16.h3 Ba6 17.Qd1 Bc5 18.Bf4 g5 19.hxg4 hxg4 20.Re1 Qh7 21.Re2 gxf4 22.gxf4 g3 23.Kf1 gxf2 24.f5 Qxf5 25.Qd2 Bxe2+ 26.Nxe2 Rh2 27.Nf4 Qe5 28.Rd1 Be3 29.Nd3 Qg3 0-1
2020.12.29 Titled Tuesday 29th Dec
1797820 FM Elgersma, Onno (2298) IM Piesik, P (2400) 1-0
1.Nf3 g6 2.e4 Bg7 3.d4 c6 4.Nc3 d6 5.h3 Nf6 6.Be2 O-O 7.O-O Nbd7 8.a4 e5 9.Be3 Re8 10.dxe5 dxe5 11.a5 Qe7 12.Nd2 Nc5 13.b4 Ne6 14.Qb1 Nd4 15.Bd3 Nh5 16.b5 Be6 17.Nb3 c5 18.Bxd4 exd4 19.Nd5 Bxd5 20.exd5 Nf4 21.Qd1 Nxd5 22.Bc4 Nc3 23.Qf3 Rab8 24.b6 a6 25.g3 Rbc8 26.Rae1 Qd7 27.Rxe8+ Rxe8 28.Nxc5 Qe7 29.Nxb7 Rc8 30.Nd6 Qxd6 31.Qxf7+ Kh8 32.b7 Rb8 33.Re1 h5 34.Re8+ Kh7 35.Rg8 Qe5 36.Bd3 1-0
2020.12.29 Titled Tuesday 29th Dec
1796036 FM Elgersma, Onno (2298) GM Kobo, Ori (2460) 0-1
1.e4 e6 2.Nf3 d5 3.Nc3 d4 4.Ne2 c5 5.Ng3 a6 6.a4 Nc6 7.Bc4 Bd6 8.d3 Nge7 9.Bd2 Ng6 10.Nh5 O-O 11.O-O Bd7 12.c3 Nge5 13.cxd4 Nxc4 14.dxc4 cxd4 15.Nf4 Qc7 16.Nd3 f5 17.exf5 e5 18.Re1 Bxf5 19.c5 Bxd3 20.cxd6 Qf7 21.Bg5 e4 22.Bh4 Qg6 23.Ng5 h6 24.Qb3+ Kh8 25.Qe6 Rf6 26.Qh3 hxg5 27.Bxg5+ Kg8 28.Bxf6 Qxf6 29.d7 Rd8 30.Rad1 Ne5 31.Rc1 Nxd7 32.Rc7 Ne5 33.Rec1 Rf8 34.Qg3 e3 35.f4 Ng6 36.Qg5 Nxf4 37.Qxf6 Rxf6 38.Rxb7 Ne2+ 39.Kh1 Nxc1 0-1
2020.12.29 Titled Tuesday 29th Dec
1797579 FM Spiric, I (2241) FM Elgersma, Onno (2298) 0-1
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.cxd5 exd5 5.Bg5 c6 6.e3 Bd6 7.Bd3 O-O 8.Nf3 Be6 9.O-O Nbd7 10.Qc2 h6 11.Bh4 Rc8 12.Bf5 Qe8 13.Rac1 a6 14.a3 g6 15.Bxe6 Qxe6 16.Bg3 Rfe8 17.Bxd6 Qxd6 18.b4 b5 19.Nd2 Nb6 20.Nb3 Nc4 21.Ra1 Ng4 22.g3 h5 23.Nc5 h4 24.Nxa6 hxg3 25.hxg3 Ncxe3 26.fxe3 Rxe3 27.Ne2 Qe7 28.Rae1 Re8 29.Nc5 Qg5 30.Nd3 Qh5 31.Rf2 Nxf2 32.Nef4 Qh1+ 33.Kxf2 Rf3# 0-1
2020.12.22 Titled Tuesday 22nd Dec
1801508 FM Elgersma, Onno (2298) IM Vastrukhin, O (2401) 0-1
1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.e5 c5 5.a3 Bxc3+ 6.bxc3 Nc6 7.Nf3 Bd7 8.a4 Qa5 9.Qd2 Nge7 10.h4 Rc8 11.Ba3 cxd4 12.cxd4 f6 13.Bb5 fxe5 14.Bxe7 Qxd2+ 15.Kxd2 Kxe7 16.Bxc6 Bxc6 17.Nxe5 Rhf8 18.f3 a5 19.c3 Rc7 20.Rhb1 Rfc8 21.Ra3 Be8 22.Rb6 h6 23.f4 h5 24.g3 Kf6 25.Ra2 Kf5 26.Ra3 Kf6 27.Kd3 Ke7 28.Kd2 Rb8 29.Rbb3 b6 30.Rb2 Rcb7 31.Ke3 b5 32.axb5 Rxb5 33.Rxb5 Rxb5 34.Ra1 Kf6 35.g4 hxg4 36.Nxg4+ Kf5 37.Ne5 Rb3 38.Kd2 a4 39.Nd3 Bb5 40.Rg1 Kf6 41.Ne5 a3 42.Rg6+ Kf5 43.Rxg7 Rb2+ 44.Ke3 Be8 0-1
2020.12.22 Titled Tuesday 22nd Dec
1802123 GM Shipov, S (2541) FM Elgersma, Onno (2298) 1-0
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.cxd5 exd5 5.Bg5 c6 6.Qc2 Bd6 7.e3 O-O 8.Nf3 Be6 9.Bd3 h6 10.Bf4 Re8 11.O-O Qc7 12.Bxd6 Qxd6 13.b4 Nbd7 14.h3 b5 15.a4 a6 16.Ne2 Nb6 17.a5 Nc4 18.Qb1 Ne4 19.Re1 Bf5 20.Nf4 g5 21.Ne2 Bg6 22.Qb3 f5 23.Rad1 Bh7 24.Nc3 Rf8 25.Bxc4 bxc4 26.Qa3 Rab8 27.Nxe4 fxe4 28.Ne5 Rb5 29.Rd2 Rfb8 30.Rb1 Bf5 31.Rdb2 h5 32.Qc3 h4 33.Qd2 Kh7 34.Qe2 Qf6 35.Qh5+ Kg7 36.Qd1 Rf8 37.Qd2 Rfb8 38.Qc3 Bc8 39.Rf1 Be6 40.f3 exf3 41.Rxf3 Qe7 42.Qc2 Qe8 43.Rb1 Rxb4 44.Rbf1 Rb2 45.Qa4 c3 46.Rf6 c2 47.R6f2 c1=Q 48.Rxc1 Rxf2 49.Kxf2 Rb2+ 50.Rc2 Rxc2+ 51.Qxc2 Qf8+ 52.Ke2 Bf5 53.Qxc6 Be4 54.Qd7+ Kh6 55.Qe6+ Kg7 56.Nf3 Qb4 57.Qe5+ Kf8 58.Qf6+ Ke8 59.Qe6+ Kf8 60.Qc8+ Ke7 61.Qc7+ Kf8 62.Qc5+ Qxc5 63.dxc5 Ke8 64.Kf2 Bxf3 65.Kxf3 Kd7 66.Kg4 Kc6 67.Kxg5 Kxc5 68.Kxh4 Kb5 69.g4 Kxa5 70.g5 Kb5 71.g6 a5 72.g7 a4 73.g8=Q a3 74.Qxd5+ Kb4 75.Qa2 1-0
2020.12.22 Titled Tuesday 22nd Dec
1802920 IM Aditya, Mittal (2438) FM Elgersma, Onno (2298) 1-0
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.cxd5 exd5 5.Bg5 c6 6.e3 Bd6 7.Bd3 O-O 8.Qc2 h6 9.Bh4 Re8 10.Nge2 a5 11.Qd2 Na6 12.f3 Nb4 13.Bb1 c5 14.a3 Nc6 15.Nxd5 Ne4 16.Bxd8 Nxd2 17.Bc7 Nb3 18.Bxd6 Nxa1 19.Nc7 Bd7 20.d5 Rxe3 21.dxc6 Bxc6 22.Kf2 Rxe2+ 23.Kxe2 Rd8 24.Bxc5 Rd7 25.Rd1 Rxd1 26.Kxd1 Nb3 27.Bb6 a4 28.Ba2 1-0
2020.12.22 Titled Tuesday 22nd Dec
1802414 IM Mohammad Fahad, Rahman (2319) FM Elgersma, Onno (2298) 1-0
1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 5.Nc3 Nf6 6.Nxc6 bxc6 7.e5 Nd5 8.Ne4 Qc7 9.f4 Qb6 10.c4 Bb4+ 11.Ke2 f5 12.Nf2 Ne7 13.Kf3 c5 14.Nd3 Bb7+ 15.Kf2 Ba5 16.Be3 Rc8 17.b4 cxb4 18.Bxb6 Bxb6+ 19.c5 Rxc5 20.Nxc5 Bxc5+ 21.Kg3 Nd5 22.Bc4 Ne3 23.Qe2 g5 24.Qh5+ Kf8 25.Qh6+ Kf7 26.Qf6+ Kg8 27.Qxg5+ 1-0
2020.12.22 Titled Tuesday 22nd Dec
1801676 Player, E (2172) FM Elgersma, Onno (2298) 0-1
1.e4 c5 2.Nf3 e6 3.c3 d5 4.exd5 exd5 5.d4 Nc6 6.Bb5 Bd6 7.dxc5 Bxc5 8.O-O Ne7 9.Nbd2 O-O 10.Nb3 Bd6 11.Be2 a6 12.Nbd4 Qc7 13.h3 Ng6 14.Re1 Bd7 15.Be3 Rfe8 16.Qb3 Nxd4 17.Nxd4 Bc6 18.Rad1 Rad8 19.Nf5 Bh2+ 20.Kh1 Bf4 21.Bb6 Qe5 22.Bxd8 Qxf5 23.Bd3 Rxe1+ 24.Rxe1 Qxd3 25.Qb4 d4 26.Qc5 Qxh3+ 0-1
2020.12.19 Chess.com Bullet Open 2
1807894 FM Chan Yi Ren, D (2316) FM Elgersma, Onno (2298) 1-0
1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 5.Nc3 a6 6.Be2 Qc7 7.O-O h6 8.Be3 h5 9.f4 Nf6 10.Bf3 Ng4 11.Bxg4 hxg4 12.Qxg4 Bc5 13.Rad1 Qb6 14.Qxg7 Rf8 15.Na4 Nxd4 16.Nxb6 Nf5 17.exf5 Bxe3+ 18.Kh1 Bxb6 19.fxe6 fxe6 20.f5 Rxf5 21.Rxf5 exf5 22.Qf6 1-0
2020.12.19 Chess.com Bullet Open 2
1808156 FM Elgersma, Onno (2298) IM Harshavardhan, G B (2397) 1-0
1.e4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.Bb5 Bd6 5.Bxc6 dxc6 6.d3 O-O 7.Ne2 h6 8.Ng3 Nh7 9.h3 Be6 10.O-O Qd7 11.Nh2 Ng5 12.h4 Nh7 13.h5 f5 14.exf5 Bxf5 15.Nxf5 Rxf5 16.Qg4 Raf8 17.Be3 Qf7 18.Qg6 Rxh5 19.Qxf7+ Rxf7 20.Nf3 Nf6 21.Nd2 Nd5 22.Ne4 Nxe3 23.fxe3 Rhf5 24.Rxf5 Rxf5 25.Rf1 Rxf1+ 26.Kxf1 Kf7 27.g4 Ke6 28.Kg2 Be7 29.Kf3 b5 30.b3 c5 31.c4 bxc4 32.bxc4 g6 33.Nc3 h5 34.Nd5 Bd8 35.Nc3 c6 36.Ne4 Be7 37.Nd2 Bf6 38.Nb3 Be7 39.Na5 Kd7 40.Nb3 h4 41.Kg2 Kc7 42.Nd2 Kb6 43.Nb3 a5 44.a4 Bg5 45.Kf3 h3 46.Kg3 Bxe3 47.Kxh3 Bd4 48.Kg3 Bc3 49.Kf3 Bb4 50.Ke4 Bc3 51.Nc1 Bd4 52.Ne2 Kc7 53.Ng3 Kd6 54.Nf1 Ke6 55.Nd2 Kf6 56.Nf3 Bc3 57.g5+ Ke6 58.Nh4 Bd4 59.Nf3 Kf7 60.Nh4 Bc3 61.Nf3 Bd4 62.Nxe5+ Bxe5 63.Kxe5 Ke7 64.d4 cxd4 65.Kxd4 Kd6 66.c5+ Kd7 67.Ke4 Ke6 68.Kf4 Kd5 69.Kg4 Kxc5 70.Kf4 Kd5 71.Ke3 c5 72.Kd3 c4+ 73.Kc3 Kc5 74.Kc2 Kb4 75.Kb2 Kxa4 76.Kc3 Kb5 77.Kd2 Kb4 78.Kc2 c3 79.Kb1 Kc4 80.Ka2 1-0
2020.12.19 Chess.com Bullet Open 2
1808925 FM Elgersma, Onno (2298) GM Kantans, T (2501) 0-1
1.e4 c5 2.Nc3 Nf6 3.Nf3 Nc6 4.Bb5 Qc7 5.O-O Nd4 6.Bc4 d6 7.d3 Bg4 8.Nb5 Nxb5 9.Bxb5+ Bd7 10.Bxd7+ Qxd7 11.Re1 e5 12.Bg5 Be7 13.Bxf6 Bxf6 14.Nd2 O-O 15.Nc4 b5 16.Ne3 Bg5 17.Nd5 f5 18.f3 a5 19.c3 Qf7 20.d4 exd4 21.cxd4 fxe4 22.fxe4 Qf2+ 23.Kh1 cxd4 24.Qg4 Bd2 25.Red1 Be3 26.h4 Rf7 27.h5 Raf8 28.a4 Kh8 29.Rf1 Qxf1+ 30.Rxf1 Rxf1+ 31.Kh2 bxa4 32.Ne7 Bf4+ 33.g3 Be5 34.Nf5 d3 35.Kg2 Re1 36.Kf2 d2 37.h6 gxh6 38.Qh4 d1=Q 0-1
2020.12.19 Chess.com Bullet Open 2
1808681 FM Elgersma, Onno (2298) WIM Jakubowska, Anna (2073) 1-0
1.e4 c6 2.Nc3 d5 3.Nf3 Bg4 4.h3 Bxf3 5.Qxf3 Nf6 6.g3 e6 7.Bg2 Nbd7 8.O-O Be7 9.Rd1 O-O 10.d4 dxe4 11.Nxe4 Nxe4 12.Qxe4 Nf6 13.Qf3 Qd5 14.c3 Qxf3 15.Bxf3 Rfd8 16.Bg5 Rac8 17.a4 h6 18.Bxf6 Bxf6 19.a5 a6 20.Kf1 c5 21.dxc5 Rxc5 22.Rxd8+ Bxd8 23.Bxb7 Rxa5 24.Rxa5 Bxa5 25.Bxa6 Kf8 26.Ke2 Ke7 27.Kd3 Kd6 28.b4 Bb6 29.f3 Bf2 30.g4 Kc6 31.Kc2 f5 32.Be2 fxg4 33.fxg4 e5 34.Bf3+ Kb5 35.Kb3 Be3 36.c4+ Kb6 37.c5+ Kb5 38.Be2+ Kc6 39.Kc4 g6 40.b5+ Kc7 41.b6+ Kc8 42.Bf3 h5 43.Kb5 hxg4 44.hxg4 g5 45.Be4 Kb8 46.c6 Bxb6 47.Kxb6 1-0
2020.12.19 Chess.com Bullet Open 2
1808172 FM Elgersma, Onno (2298) Liang, Justin (2067) 0-1
1.e4 c6 2.Nc3 d5 3.Nf3 dxe4 4.Nxe4 Nf6 5.Qe2 Bf5 6.d3 Qc7 7.g3 Nbd7 8.Bf4 e5 9.Nxf6+ gxf6 10.Bd2 O-O-O 11.Bg2 Be6 12.O-O Bc5 13.Nh4 h5 14.b4 Be7 15.a4 f5 16.Nf3 Rdg8 17.b5 c5 18.a5 Qb8 19.a6 b6 20.Bc3 Bf6 21.Rfe1 e4 22.dxe4 Bxc3 23.exf5 Bxf5 24.Red1 Bxa1 25.Nh4 Be6 26.Bb7+ Kd8 27.Rxa1 Qe5 28.Qd1 Qd4 29.Qe1 Qxh4 30.Rd1 Qb4 31.Qxe6 fxe6 0-1
2020.12.19 Chess.com Bullet Open 2
1807977 FM Elgersma, Onno (2298) Uddin, Mubassar (2087) 1-0
1.e4 c6 2.Nc3 d5 3.Nf3 dxe4 4.Nxe4 Nf6 5.Qe2 Nxe4 6.Qxe4 Nd7 7.Bc4 Nf6 8.Ne5 e6 9.Qe2 Bd6 10.O-O O-O 11.d4 Qc7 12.Rd1 b5 13.Bd3 Bb7 14.Bg5 Be7 15.Qf3 h6 16.Bh4 Rad8 17.c3 c5 18.Qg3 cxd4 19.cxd4 Nd5 20.Rac1 Qb6 21.Bxe7 Nxe7 22.Qh4 Nf5 23.Bxf5 exf5 24.Qf4 Qe6 25.Rc7 Qd5 26.f3 g6 27.Qxh6 Ba8 28.Nxg6 Qe6 29.Qh8# 1-0
2020.12.19 Chess.com Bullet Open 2
1808757 GM Mirzoev, A (2430) FM Elgersma, Onno (2298) 1-0
1.d4 d5 2.Nf3 e6 3.Bf4 Nf6 4.e3 c5 5.c3 Nc6 6.Nbd2 Nh5 7.Bg5 f6 8.Bh4 cxd4 9.exd4 Bd6 10.Bg3 Nf4 11.Bxf4 Bxf4 12.g3 Bd6 13.Bg2 O-O 14.O-O b5 15.b4 a5 16.a3 Bb7 17.Nb3 Ne7 18.Nc5 Bxc5 19.bxc5 Bc6 20.Re1 Bd7 21.Nd2 Nc6 22.Nb3 a4 23.Nc1 Na5 24.Nd3 Nc4 25.Nb4 Bc8 26.Ra2 Re8 27.Bf1 Qc7 28.h4 Rb8 29.Qc1 Bb7 30.Bg2 Bc8 31.Rae2 Bd7 32.f4 Rbd8 33.Kh2 Kf8 34.Qb1 Kg8 35.f5 exf5 36.Bxd5+ Kh8 37.Rxe8+ Rxe8 38.Rxe8+ Bxe8 39.Qxf5 Ne3 40.Qe6 Bf7 41.Qxf7 Nf1+ 42.Kg2 Qxg3+ 43.Kxf1 Qf4+ 44.Ke2 Qh2+ 45.Kd3 Qg3+ 46.Kc2 Qf2+ 47.Kb1 Qe1+ 48.Kb2 Qd2+ 49.Nc2 1-0
2020.12.19 Chess.com Bullet Open 2
1808503 FM Elgersma, Onno (2298) GM Studer, N (2588) 0-1
1.e4 c5 2.Nc3 Nc6 3.Nf3 g6 4.Bb5 Bg7 5.d3 e5 6.O-O Nge7 7.Bg5 h6 8.Bxe7 Nxe7 9.Bc4 O-O 10.Nd5 Nc6 11.c3 d6 12.a4 Be6 13.Nd2 Kh7 14.f4 exf4 15.Nxf4 Bxc4 16.Nxc4 Ne5 17.Nxe5 Bxe5 18.Nd5 Qh4 19.g3 Qg5 20.Qf3 h5 21.Kg2 h4 22.Qe3 Qxe3 23.Nxe3 hxg3 24.hxg3 Kg7 25.Rh1 Rae8 26.Nd5 f5 27.Raf1 fxe4 28.dxe4 Rh8 29.Rxh8 Rxh8 30.Ne3 Rh5 31.Nd5 Rg5 32.Rf3 Rg4 33.Re3 Rg5 34.b4 Rh5 35.bxc5 dxc5 36.c4 b6 37.Ra3 Bd4 38.a5 Re5 39.axb6 a6 40.b7 Re8 41.b8=Q Rxb8 42.Rxa6 Rb2+ 43.Kf3 Rb3+ 44.Kf4 Bf2 45.g4 Bh4 46.g5 Rg3 47.Ra7+ Kf8 48.Ke5 Rxg5+ 49.Ke6 Rg4 50.Rf7+ Kg8 51.e5 Rxc4 52.Nf6+ Bxf6 53.Rxf6 Kg7 54.Rf7+ Kh6 55.Rc7 Rf4 56.Rxc5 g5 57.Rc8 g4 58.Rh8+ Kg5 59.Rg8+ Kh4 60.Kd5 Kg3 61.e6 Rf2 62.e7 Rd2+ 63.Kc6 Re2 64.Kb6 Rxe7 65.Rxg4+ Kxg4 66.Kc5 Re5+ 0-1
2020.12.19 Chess.com Bullet Open 2
1808774 FM Elgersma, Onno (2298) CM Tikhonov, Viacheslav (2274) 1-0
1.e4 g6 2.Nc3 Bg7 3.Nf3 d6 4.h4 c6 5.h5 Nd7 6.h6 Nxh6 7.d4 Ng4 8.Ng5 h5 9.Qf3 Ngf6 10.Bc4 e6 11.Bf4 d5 12.Bb3 dxe4 13.Ncxe4 Nxe4 14.Nxe4 Nf6 15.Be5 Bd7 16.Nxf6+ Kf8 17.Bd6+ Qe7 18.Nxd7+ Ke8 19.Bxe7 Kxe7 20.Ne5 Bxe5 21.dxe5 Rhd8 22.Qf6+ Kd7 23.O-O-O+ Kc8 24.Qxd8# 1-0
2020.12.19 Chess.com Bullet Open 2
1808264 IM Fiorito, F (2380) FM Elgersma, Onno (2298) 0-1
1.Nf3 d5 2.g3 e6 3.Bg2 Nf6 4.O-O Be7 5.d3 O-O 6.Nbd2 c5 7.c3 Nc6 8.e4 b5 9.Qe2 Bb7 10.e5 Nd7 11.d4 Qc7 12.h4 Qb6 13.Nb3 a5 14.Be3 a4 15.Nbd2 b4 16.Rab1 a3 17.h5 axb2 18.Rxb2 Ba6 19.c4 cxd4 20.Bg5 Bc5 21.Qd3 Ndxe5 22.Qe2 Nxc4 23.Nxc4 Bxc4 24.Qd2 Bxf1 25.Bxf1 e5 26.Bd3 e4 27.h6 g6 28.Bf6 exd3 29.Qg5 Rfe8 30.Bh8 Re6 31.Bg7 Rae8 32.Kg2 Qd8 33.Rb3 Qxg5 34.Nxg5 Re2 35.Rxd3 Ne5 36.Nf3 Nxd3 37.Nxd4 Bxd4 38.Bxd4 Rxf2+ 39.Bxf2 Nxf2 40.Kxf2 Rd8 41.Kf3 d4 42.Kf2 f5 43.Kg2 f4 44.Kh3 d3 45.g4 d2 46.Kh4 d1=Q 47.Kg5 Qd5+ 48.Kh4 g5+ 49.Kh5 Qf7+ 50.Kxg5 Rd5+ 51.Kh4 Qf6+ 52.Kh3 Rd3+ 53.Kg2 Qb2+ 0-1
2020.12.19 Chess.com Bullet Open 2
1807772 FM Elgersma, Onno (2298) GM Ivic, Velimir (2581) 0-1
1.e4 c5 2.Nf3 Nc6 3.Bb5 g6 4.O-O Bg7 5.c3 e5 6.d4 cxd4 7.cxd4 exd4 8.Bf4 a6 9.Bxc6 dxc6 10.Na3 Ne7 11.Nc4 O-O 12.a4 Be6 13.Nd6 Qd7 14.a5 c5 15.Rc1 Rac8 16.Nxc8 Rxc8 17.Ne5 Qb5 18.b3 Bxb3 19.Qf3 Be6 20.h4 c4 21.Rb1 Qxa5 22.Ng4 h5 23.Nh6+ Kh7 24.Nxf7 Bxf7 25.Bg5 Nf5 26.exf5 Qxf5 27.Qxf5 gxf5 28.Rxb7 Kg8 29.Re1 Bf8 30.Rd1 d3 31.Bf6 Bd5 32.Rd7 Be6 33.Ra7 Rc6 34.f3 Bc5+ 0-1
2020.12.19 Chess.com Bullet Open 2
1808299 FM Elgersma, Onno (2298) GM Salinas Herrera, P (2514) 0-1
1.e4 e6 2.Nc3 d5 3.Nf3 dxe4 4.Nxe4 Bd7 5.Qe2 Bc6 6.Ne5 Bxe4 7.Qxe4 c6 8.Qe2 Nd7 9.d4 Nxe5 10.dxe5 Ne7 11.g3 Ng6 12.Bg2 Be7 13.O-O O-O 14.h4 Qb6 15.h5 Nh8 16.h6 gxh6 17.Bxh6 Rfd8 18.b3 Ng6 19.Rad1 a5 20.Be4 a4 21.Bxg6 hxg6 22.Rxd8+ Rxd8 23.Rd1 axb3 24.Rxd8+ Qxd8 25.axb3 Qd4 26.Bf4 Kg7 27.Kg2 Qd5+ 28.Qf3 b5 29.g4 Bc5 30.g5 Bd4 31.Qxd5 exd5 32.Kg3 Kf8 33.Kg4 Ke7 34.Bg3 Ke6 35.f4 Be3 36.Kf3 Bc1 37.Bf2 Ba3 38.Bg3 Kf5 39.Bh2 Bc1 40.Bg3 c5 41.Bh2 c4 42.Bg3 d4 43.Bh2 d3 44.cxd3 cxb3 0-1
2020.12.19 Chess.com Bullet Open 2
1808563 FM Elgersma, Onno (2298) IM Djordjevic, Vu (2350) 0-1
1.e4 e6 2.Nf3 d5 3.Nc3 Nf6 4.Qe2 c5 5.exd5 Nxd5 6.g3 Nc6 7.Bg2 Be7 8.O-O O-O 9.d3 Nxc3 10.bxc3 Bf6 11.Bd2 Rb8 12.Rab1 b5 13.a4 a6 14.axb5 axb5 15.Bf4 Rb6 16.Bd2 Ba6 17.h4 b4 18.c4 Bb7 19.h5 h6 20.Be3 Ra6 21.Bxc5 Re8 22.Bxb4 Ra2 23.Bc5 Qa8 24.Rfc1 Rd8 25.Bb6 Rd7 26.Qe3 Ra6 27.Bc5 Ra2 28.d4 Nxd4 29.Bxd4 Bxd4 30.Nxd4 Bxg2 31.Nxe6 Bh3 32.Nf4 Bg4 33.Qe5 Ra5 34.Rb8+ Kh7 35.Qe4+ Bf5 36.Qxf5+ Rxf5 37.Rxa8 Rc7 38.Ra4 g5 39.hxg6+ fxg6 40.Ra6 Rxc4 41.Nd5 Rf7 42.Nf6+ Kg7 43.Nd5 Rd4 44.Ne3 Rd2 45.Rb1 Rdxf2 46.Rbb6 R2f3 47.Rxg6+ Kf8 48.Nd5 Rf1+ 49.Kg2 R7f2+ 50.Kh3 Rh1+ 51.Kg4 Rd2 52.Ra8+ Kf7 53.Rf6+ Kg7 54.Ra7+ Kg8 55.Rg6+ Kf8 56.Rf6+ Ke8 57.Re6+ Kd8 58.Kf5 Rxd5+ 59.Kf6 Rd7 60.Kg6 Rxa7 61.Rd6+ Rd7 62.Kf6 Rxd6+ 63.Ke5 Rd7 64.Ke6 Re7+ 65.Kf5 Rd7 0-1
2020.12.19 Chess.com Bullet Open 2
1808071 FM Piotrowski, P (2241) FM Elgersma, Onno (2298) 1/2-1/2
1.d4 d5 2.Nf3 e6 3.g3 Nf6 4.Bg2 Be7 5.O-O O-O 6.c4 dxc4 7.Qc2 a6 8.a4 Nbd7 9.Qxc4 b5 10.Qc2 Bb7 11.Bg5 Be4 12.Qc1 c5 13.Nbd2 Bd5 14.axb5 axb5 15.Rxa8 Qxa8 16.dxc5 Bxc5 17.Bxf6 gxf6 18.Re1 Rc8 19.Qb1 f5 20.Nh4 Bb4 21.Qd3 Ne5 22.Qe3 Ng6 23.Nxg6 hxg6 24.Rd1 Bxg2 25.f3 Rd8 26.Kxg2 Qd5 27.Ra1 Bxd2 28.Qb6 Qd4 29.Qxd4 Rxd4 30.Rd1 Be3 31.Rxd4 Bxd4 32.b3 Kg7 33.e4 Kf6 34.exf5 gxf5 35.h4 e5 36.Kh3 e4 37.Kg2 e3 38.f4 Kg6 39.Kf3 Kh5 40.Ke2 Kg4 41.Kd3 Kxg3 42.h5 Bh8 43.Kxe3 Kh4 44.Kf3 Kxh5 45.Kg3 Bd4 46.Kh3 Be3 47.Kg3 Bc1 48.Kf3 Kh4 49.Ke2 Kg4 50.Kd3 Bxf4 51.Kd4 Bd6 52.Kd5 Bf8 53.Kc6 b4 54.Kb5 f4 55.Kc4 f3 56.Kb5 f2 57.Ka4 f1=Q 58.Ka5 Qf5+ 59.Ka4 Kf3 1/2-1/2
2020.12.19 Chess.com Bullet Open 2
1808852 FM Elgersma, Onno (2298) FM Silva, Kaua Marques (2121) 1-0
1.e4 c5 2.Nc3 Nc6 3.Nge2 g6 4.g3 Bg7 5.Bg2 d6 6.O-O e5 7.h3 Nge7 8.d3 O-O 9.Bg5 Be6 10.Bxe7 Qxe7 11.Nd5 Nd4 12.Nxd4 Bxd5 13.Nb5 Bc6 14.Nc3 f5 15.exf5 gxf5 16.Nd5 Qf7 17.c4 Kh8 18.h4 Rae8 19.a4 e4 20.dxe4 fxe4 21.Ne3 Bxb2 22.Rb1 Be5 23.Nd5 Rg8 24.Qe2 Bxd5 25.cxd5 e3 26.f4 Bd4 27.g4 Qe7 28.g5 Qd7 29.f5 Qg7 30.f6 Qf7 31.Rf5 Re5 32.Rxe5 dxe5 33.d6 Qd7 34.Rxb7 Qxa4 35.Be4 Re8 36.Rxh7+ Kg8 37.Rg7+ Kf8 38.Rh7 Qa1+ 39.Kg2 Qb2 40.Rh8+ Kf7 41.Rxe8 Kxe8 42.Qxb2 Bxb2 43.Kf3 e2 44.Kxe2 Bd4 45.g6 c4 46.g7 Kd7 47.g8=Q Kxd6 48.Qd5+ Kc7 49.Qxc4+ Kb6 50.Qc6+ Ka5 51.Bd5 a6 52.Bc4 Kb4 53.Qxa6 Kc3 54.Qb5 Kc2 55.Qb3+ Kc1 56.Bd3 Bb2 57.Qc2# 1-0
2020.12.19 Chess.com Bullet Open 2
1808608 FM Filgueiras, Nathan Felipe (2311) FM Elgersma, Onno (2298) 1-0
1.e4 c6 2.Nf3 d5 3.Nc3 dxe4 4.Nxe4 Bg4 5.h3 Bxf3 6.Qxf3 Nf6 7.d3 Nbd7 8.Bf4 Qb6 9.O-O-O O-O-O 10.Nxf6 Nxf6 11.g4 e6 12.g5 Nd5 13.Bd2 Nb4 14.Kb1 Qc5 15.Bc3 Nd5 16.Bd2 Nb4 17.Bc3 Nd5 18.Bd2 f6 19.Rc1 Bd6 20.h4 Be5 21.Bh3 Rhe8 22.Rhe1 Qb6 23.c3 Kb8 24.d4 Bc7 25.gxf6 Nxf6 26.Rxe6 Rxe6 27.Bxe6 c5 28.dxc5 Qxc5 29.Bf4 Re8 30.Bxc7+ Qxc7 31.Bb3 Qe5 32.Rd1 Qe2 33.Qxe2 Rxe2 34.Rg1 g6 35.f4 Rf2 36.Re1 Rxf4 37.Rh1 h5 38.Bc2 Rg4 39.Rf1 Nd5 40.Rf8+ Kc7 41.Rg8 Rxh4 42.Bxg6 Ne3 43.Kc1 Rh2 44.Rg7+ Kd6 45.Rh7 h4 46.Bh5 h3 47.Bf3 Rf2 48.Rxh3 Rc2+ 49.Kb1 Rf2 50.Kc1 Rc2+ 51.Kb1 Rf2 52.a3 Ke5 53.Ka2 Kf4 54.Rh7 Kxf3 55.Rxb7 Ke2 56.Rxa7 Nd1 57.Rd7 Ke3 58.Re7+ Kd2 59.Rb7 Kc1 60.Rb5 1-0
2020.12.19 Chess.com Bullet Open 2
1807842 WFM Sviridova, Vlada (2144) FM Elgersma, Onno (2298) 0-1
1.d4 d5 2.c4 e6 3.Nf3 Nf6 4.Nc3 a6 5.Bg5 dxc4 6.e3 b5 7.a4 b4 8.Ne4 Bb7 9.Nxf6+ gxf6 10.Bh4 Rg8 11.Bg3 Nd7 12.Bxc4 Nb6 13.Bb3 Bd6 14.a5 Nd5 15.e4 Nf4 16.O-O h5 17.e5 Nxg2 18.Kxg2 h4 19.exd6 hxg3 20.fxg3 Qxd6 21.d5 O-O-O 22.Rc1 exd5 23.Qc2 d4 24.Bc4 d3 25.Qd2 Rg4 26.Rce1 Rdg8 27.Qf2 Rxc4 28.Re3 Rc2 29.Kg1 Rxf2 30.Rxf2 Bxf3 31.Rfxf3 d2 32.Rd3 d1=Q+ 33.Rxd1 Qxd1+ 34.Rf1 Qe2 35.Rf2 Qe3 36.Kg2 Rd8 37.Rf3 Rd2+ 38.Kh3 Qxf3 39.b3 Qg2+ 40.Kh4 Rd4+ 41.Kh5 Qxh2# 0-1
2020.12.19 Chess.com Bullet Open 2
1808382 FM Elgersma, Onno (2298) IM Molina, Rob (2434) 1-0
1.e4 c6 2.Nc3 d5 3.Nf3 dxe4 4.Nxe4 Bg4 5.h3 Bxf3 6.Qxf3 Nd7 7.Bc4 Ne5 8.Qb3 Nxc4 9.Qxc4 Qd5 10.Qe2 e6 11.O-O Be7 12.d3 Nf6 13.Nxf6+ Bxf6 14.a3 O-O 15.Qg4 Rfd8 16.Rb1 c5 17.b3 b5 18.a4 a6 19.Be3 Rab8 20.Rfd1 Qc6 21.axb5 axb5 22.c4 Rd7 23.cxb5 Rxb5 24.Qc4 Rdb7 25.b4 Be7 26.Rdc1 Qd5 27.Qxd5 exd5 28.Ra1 cxb4 29.Ra8+ Rb8 30.Rc8+ Rxc8 31.Rxc8+ Bf8 32.Bg5 f6 33.Bf4 Kf7 34.Rc7+ Ke6 35.Rc8 Bd6 36.Bc1 b3 37.Bb2 Ra5 38.Rb8 Ra2 39.Rxb3 Bc5 40.Rb5 Kd6 41.d4 Ba7 42.Rb7 Kc6 43.Rb3 Ra4 44.Bc3 Rc4 45.Ra3 Rxc3 46.Ra6+ 1-0
2020.11.24 Titled Tuesday 24th Nov
1825543 IM Perez Gormaz, M (2413) FM Elgersma, Onno (2298) 0-1
1.e4 c5 2.Nf3 e6 3.g3 Nc6 4.Bg2 a6 5.O-O Nf6 6.e5 Ng4 7.Qe2 Qc7 8.Re1 Be7 9.h3 Nh6 10.d3 Nf5 11.c3 h5 12.Nbd2 b5 13.a4 Bb7 14.Ne4 Rb8 15.axb5 axb5 16.Bf4 Ra8 17.Rad1 Qb6 18.Qd2 Ra2 19.Qc1 Ra8 20.Bg5 Bf8 21.g4 hxg4 22.hxg4 Nh6 23.Qf4 Ng8 24.Bh4 Rxh4 25.Nxh4 Be7 26.Nf3 Nh6 27.Ng3 b4 28.g5 Ng8 29.Nd2 Qc7 30.Nc4 Ra2 31.Ne4 Nd8 32.Ned6+ Bxd6 33.Nxd6+ Kf8 34.Bxb7 Rxb2 35.cxb4 Ne7 36.bxc5 Ng6 37.Qf3 Qxc5 38.d4 Qc2 39.Be4 Qb3 40.Bxg6 Qxf3 41.Rf1 fxg6 42.Rc1 Qg4+ 43.Kh2 Rb3 44.f3 Rb2+ 45.Kh1 Qg2# 0-1
2020.11.24 Titled Tuesday 24th Nov
1825862 FM Elgersma, Onno (2298) FM Girel, Joseph (2301) 1-0
1.d3 Nf6 2.Nf3 Nc6 3.d4 d5 4.Bf4 Bf5 5.e3 e6 6.Bd3 Bxd3 7.cxd3 Bd6 8.Ne5 Bxe5 9.dxe5 Nd7 10.d4 O-O 11.Nc3 Na5 12.O-O Nc4 13.b3 Ncb6 14.Rc1 Rc8 15.Nb5 a6 16.Nc3 c5 17.Qg4 Kh8 18.h4 cxd4 19.exd4 Qe7 20.h5 h6 21.Bd2 Rc6 22.f4 f5 23.Qe2 Na8 24.g4 fxg4 25.Qxg4 Rf5 26.Kg2 Nc7 27.Ne2 Qa3 28.Rxc6 bxc6 29.Ng3 Rf7 30.f5 Qxa2 31.Rf2 exf5 32.Nxf5 Qb1 33.Qg6 Qe4+ 34.Kg3 Nxe5 35.dxe5 Qxe5+ 36.Rf4 Rf8 37.Nxh6 Rxf4 38.Bxf4 Qe1+ 39.Kf3 Qf1+ 40.Ke3 Qe1+ 41.Kf3 Qf1+ 42.Kg4 Qe2+ 43.Kf5 Qd3+ 44.Kg4 Qe2+ 45.Kh4 Qf2+ 46.Bg3 Qd4+ 47.Kh3 Nb5 48.Nf7+ Kg8 49.Ng5 1-0
2020.11.24 Titled Tuesday 24th Nov
1825149 FM Isajevsky, A (2403) FM Elgersma, Onno (2298) 1-0
1.c4 e6 2.Nf3 d5 3.e3 Nf6 4.b3 c5 5.Bb2 Nc6 6.cxd5 exd5 7.d4 cxd4 8.Nxd4 Bb4+ 9.Bc3 Qa5 10.Qd2 Nxd4 11.Bxb4 Qxb4 12.exd4 Qxd2+ 13.Kxd2 O-O 14.f3 Bf5 15.Nc3 Rac8 16.Rc1 h5 17.Bd3 Bxd3 18.Kxd3 Rfe8 19.Nb5 h4 20.Nd6 Rxc1 21.Rxc1 Re7 22.Nf5 Re6 23.Nxh4 Nh5 24.g3 Ra6 25.Rc2 g6 26.Ng2 Kg7 27.Ne3 Nf6 28.g4 Ra5 29.a4 b6 30.Kc3 Nd7 31.Kb4 Nb8 32.Ka3 b5 33.Kb4 Ra6 34.Nxd5 bxa4 35.bxa4 Rd6 36.Rc5 Na6+ 37.Kc4 Nxc5 38.dxc5 Rc6 39.Kb5 Rc8 40.c6 Kf8 41.c7 Ke8 42.Kc6 1-0
2020.11.24 Titled Tuesday 24th Nov
1824391 FM Elgersma, Onno (2298) FM Prohorov, Olexandr (2086) 0-1
1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Qb6 5.Nb3 Nf6 6.Be3 Qc7 7.f3 d5 8.exd5 Nxd5 9.Bf2 Nc6 10.N1d2 Be7 11.Qe2 O-O 12.Ne4 b6 13.Qc4 a5 14.Nd4 Nxd4 15.Bxd4 Qf4 16.Qe2 Ba6 17.Qd2 Qxd2+ 18.Nxd2 Bxf1 19.Rxf1 Bf6 20.Bxf6 Nxf6 21.O-O-O b5 22.Rfe1 Nd5 23.Ne4 Rac8 24.Kb1 Rfd8 25.g3 Kf8 26.Ng5 h6 27.Ne4 a4 28.a3 Rc6 29.Nf2 Ke7 30.Nd3 f6 31.f4 Kf7 32.Re4 g6 33.Rde1 Rdc8 34.R1e2 g5 35.fxg5 hxg5 36.h4 gxh4 37.gxh4 Rh8 38.c3 Rh5 39.Ka2 Rd6 40.Nc5 Nxc3+ 41.bxc3 Rxc5 42.Kb2 Rcd5 43.Kc2 Rd1 44.h5 Rh1 45.Rb4 e5 46.Rxb5 Rxh5 47.Ra5 Ke6 48.Rxa4 Rh3 49.Ra5 Rc6 50.Kb2 Rcxc3 51.a4 Rb3+ 52.Kc2 Rbc3+ 53.Kb2 Rb3+ 54.Kc2 Rbc3+ 55.Kd2 Rcd3+ 56.Ke1 Rh1+ 57.Kf2 Rd4 58.Ra6+ Kf5 59.a5 Rf4+ 60.Ke3 Rh3+ 61.Kd2 Rd4+ 62.Ke1 Rf4 63.Rf2 Rh1+ 64.Ke2 Ke4 65.Ra8 Rxf2+ 66.Kxf2 Ra1 67.a6 f5 68.a7 Kf4 69.Ke2 Ra2+ 70.Kd1 e4 71.Kc1 Ke3 72.Kb1 Ra6 73.Kb2 f4 0-1
2020.11.24 Titled Tuesday 24th Nov
1825423 FM Elgersma, Onno (2298) WFM Sviridova, Vlada (2144) 1-0
1.d3 d5 2.Nf3 Nf6 3.g3 c6 4.Bg2 Bf5 5.O-O e6 6.Nbd2 h6 7.b3 Be7 8.Bb2 O-O 9.c4 a5 10.a3 Na6 11.Rc1 Bh7 12.Ne5 Bd6 13.Ndf3 Qe7 14.Ra1 Rfd8 15.h3 Rac8 16.Qd2 Nc5 17.Qc2 Ncd7 18.Nxd7 Nxd7 19.Qd2 b6 20.Ne1 Be5 21.Bxe5 Nxe5 22.Qe3 Qf6 23.Rc1 d4 24.Qd2 c5 25.b4 axb4 26.axb4 Nc6 27.Nc2 Qe7 28.Rb1 cxb4 29.Nxb4 Na5 30.Rfc1 Bf5 31.Kh2 Qd6 32.Qf4 Qxf4 33.gxf4 Rb8 34.Nc6 Nxc6 35.Bxc6 g5 36.fxg5 hxg5 37.Bg2 f6 38.Rb4 Kg7 39.Rcb1 e5 40.Rxb6 Rxb6 41.Rxb6 Rc8 42.Bd5 Kg6 43.Rb7 Rh8 44.Bg2 g4 45.Kg3 gxh3 46.Bh1 h2 47.f3 Rh3+ 48.Kf2 Rh8 49.c5 Rc8 50.Rb5 Bd7 51.Ra5 Rb8 52.Kg3 Rb2 53.Kxh2 Rxe2+ 54.Kg3 Bc6 55.Ra6 Bd5 56.Rd6 Bb7 57.c6 Bc8 58.c7 Rc2 59.f4 exf4+ 60.Kxf4 Bh3 61.Be4+ Kf7 62.Bc6 Bc8 63.Be4 Ke7 64.Rxd4 1-0
2020.11.24 Titled Tuesday 24th Nov
1824666 FM Ashiev, E (2202) FM Elgersma, Onno (2298) 0-1
1.d4 Nf6 2.Nf3 e6 3.c4 Bb4+ 4.Nc3 O-O 5.Bd2 d5 6.e3 b6 7.cxd5 exd5 8.Bd3 a6 9.O-O Bd6 10.Ne5 c5 11.f4 Bb7 12.Qf3 b5 13.Be1 b4 14.Ne2 Ne4 15.f5 Nd7 16.Nxd7 Qxd7 17.Ng3 Nxg3 18.Bxg3 c4 19.Bc2 Bxg3 20.Qxg3 f6 21.Rf4 Rfe8 22.Raf1 Qe7 23.R1f3 a5 24.Ba4 Rec8 25.Rh4 Qf7 26.Qh3 h6 0-1
2020.11.24 Titled Tuesday 24th Nov
1824457 FM Elgersma, Onno (2298) FM Einarsson, H (2215) 1-0
1.c3 Nf6 2.Nf3 c5 3.d4 cxd4 4.cxd4 g6 5.Nc3 d5 6.Bf4 Bg7 7.e3 O-O 8.Be2 Nc6 9.O-O Bf5 10.Rc1 Rc8 11.Qd2 Qa5 12.a3 Rfe8 13.Ne5 Qd8 14.Bb5 Ne4 15.Nxe4 Nxe5 16.dxe5 dxe4 17.Rxc8 Bxc8 18.Qc3 Rf8 19.Rc1 Bf5 20.h3 h5 21.Bh2 g5 22.Be2 g4 23.h4 e6 24.Bg3 f6 25.Qc7 fxe5 26.Qxd8 Rxd8 27.Rc7 Rd2 28.Bc4 Rxb2 29.Rxg7+ Kf8 30.Bxe5 Rb1+ 31.Kh2 b5 32.Be2 Re1 33.Bxb5 1-0
2020.11.24 Titled Tuesday 24th Nov
1825744 FM Elgersma, Onno (2298) FM Taboas Rodriguez, D (2367) 1/2-1/2
1.e3 d5 2.Nf3 Nf6 3.b3 Bg4 4.Bb2 e6 5.h3 Bh5 6.Be2 c5 7.Bb5+ Nc6 8.O-O Bd6 9.d3 O-O 10.Bxc6 bxc6 11.Nbd2 Nd7 12.g4 Bg6 13.Qe2 f5 14.Kg2 e5 15.e4 fxg4 16.hxg4 Qe7 17.Rae1 Rf4 18.Ng1 Raf8 19.f3 h5 20.Nh3 R4f7 21.g5 Rf4 22.Qf2 h4 23.Kh2 Bh5 24.Nxf4 Rxf4 25.Rg1 Qf7 26.Ref1 Nf8 27.Qe3 Ng6 28.Ba3 h3 29.Bxc5 d4 30.Qe2 Bxc5 31.Rg3 Bb4 32.Nc4 Nh4 33.Nxe5 Qc7 34.Ng4 Bxg4 35.fxg4 Rxf1 36.Qxf1 Bd6 37.Qxh3 Bxg3+ 38.Qxg3 Qxg3+ 39.Kxg3 Ng6 40.Kf3 Kf7 41.Ke2 Ke6 42.Kd2 c5 43.c3 Ne5 44.b4 dxc3+ 45.Kxc3 cxb4+ 46.Kxb4 Nxd3+ 47.Kc4 Ne5+ 48.Kb5 Nxg4 49.Ka6 Nf2 50.Kxa7 Nxe4 51.a4 Nxg5 52.a5 Ne4 53.Kb6 Nd6 54.Kc6 g5 55.a6 Nc8 56.Kc7 Na7 57.Kb6 g4 58.Kxa7 g3 59.Kb8 g2 60.a7 g1=Q 61.a8=Q Qb6+ 62.Qb7 Qxb7+ 63.Kxb7 1/2-1/2
2020.11.24 Titled Tuesday 24th Nov
1823723 FM Elgersma, Onno (2298) GM Shirov, A (2662) 0-1
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.d3 d6 6.a3 g6 7.c4 Bg7 8.Nc3 O-O 9.h3 Nd7 10.Bxc6 bxc6 11.O-O Nc5 12.Be3 Ne6 13.d4 exd4 14.Nxd4 c5 15.Nxe6 Bxe6 16.Qd3 Rb8 17.Rab1 Rb3 18.Rfd1 Qb8 19.Qc2 Bxc4 20.f4 Qb7 21.Bf2 Rb8 22.e5 Be6 23.Qe4 Qxe4 24.Nxe4 Bf5 25.exd6 cxd6 26.Rxd6 Bxe4 27.Rbd1 h5 0-1
2020.10.13 Titled Tuesday 13th Oct
1849656 FM Elgersma, Onno (2298) Levine, Joseph (2073) 1-0
1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.exd5 exd5 5.Bf4 Bd6 6.Qd2 O-O 7.O-O-O c6 8.f3 b5 9.g4 a5 10.Bd3 a4 11.Nce2 b4 12.h4 Ba6 13.h5 b3 14.cxb3 Bxd3 15.Qxd3 Bxf4+ 16.Nxf4 Qd6 17.Nge2 a3 18.Qc3 axb2+ 19.Qxb2 Na6 20.Nd3 Nb4 21.Nxb4 Qxb4 22.Nf4 c5 23.Nd3 Qa5 24.Kb1 c4 25.Nc5 cxb3 26.axb3 Rfb8 27.g5 Ne8 28.g6 Nd6 29.gxh7+ Kh8 30.h6 g6 31.Rc1 Nc4 32.Rxc4 Kxh7 33.Rhc1 dxc4 34.Rxc4 Rb4 35.d5 Rxc4 36.Qg7# 1-0
2020.10.13 Titled Tuesday 13th Oct
1848942 GM Dourerassou, J (2477) FM Elgersma, Onno (2298) 1-0
1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Ndb5 d6 7.Bf4 e5 8.Bg5 a6 9.Na3 b5 10.Nd5 Be7 11.Bxf6 Bxf6 12.c3 Rb8 13.Nc2 Bg5 14.Bd3 O-O 15.h4 Bh6 16.Qf3 Ne7 17.Ncb4 Bb7 18.g3 a5 19.Nc2 Bxd5 20.exd5 f5 21.Qe2 b4 22.cxb4 axb4 23.O-O Qb6 24.Bc4 f4 25.Kh2 Nf5 26.Bd3 Nd4 27.Qe4 g6 28.Nxd4 Qxd4 29.Qxd4 exd4 30.g4 Bg7 31.Rfe1 Be5 32.f3 Ra8 33.Kg2 Rf7 34.Rec1 Rfa7 35.Rc4 Rxa2 36.Rxa2 Rxa2 37.Rxb4 Ra1 38.h5 Rd1 39.Be4 Rd2+ 40.Kf1 gxh5 41.gxh5 d3 42.Rb8+ Kg7 43.Rb7+ Kf6 44.Bxh7 Rd1+ 45.Kg2 d2 46.Bc2 Rc1 47.Ba4 d1=Q 48.Bxd1 Rxd1 49.b4 Kg5 50.b5 Kxh5 51.b6 Rb1 52.Rb8 Kg6 53.b7 Kg7 54.Kh3 Rb5 55.Kg4 Bd4 56.Kxf4 Ba7 57.Rd8 Rxb7 58.Kf5 Re7 59.Rxd6 Kf7 60.Rh6 Bc5 61.d6 Rd7 62.Ke5 Ba3 63.Rh7+ Ke8 64.Rh8+ Kf7 65.Rh7+ Ke8 66.Rh6 Rg7 67.Ke6 Rg8 68.f4 Kd8 69.f5 Re8+ 70.Kd5 Rf8 71.Ke5 Bb2+ 72.Ke4 Ba3 73.Ke5 Bb2+ 74.Ke6 Ba3 75.Rh7 Bb2 76.Ra7 Re8+ 77.Kd5 Ba3 78.Kc6 1-0
2020.10.13 Titled Tuesday 13th Oct
1850225 FM Elgersma, Onno (2298) FM Omariev, M (2304) 0-1
1.Nf3 d5 2.d4 Nf6 3.c4 c6 4.g3 g6 5.Bg2 Bg7 6.O-O O-O 7.cxd5 cxd5 8.Bf4 Nc6 9.Ne5 Bd7 10.Nc3 e6 11.Rc1 Rc8 12.Qd2 Re8 13.h4 Nh5 14.Bg5 f6 15.Nxc6 Bxc6 16.Bh6 Bh8 17.g4 Ng7 18.e4 dxe4 19.Nxe4 Bxe4 20.Bxe4 Rxc1 21.Rxc1 f5 22.Bg5 Qd7 23.Bg2 fxg4 24.d5 Nf5 25.dxe6 Qxd2 26.Bxd2 Nxh4 27.Bxb7 Nf3+ 28.Bxf3 gxf3 29.Rc6 Bxb2 30.Kh2 Be5+ 31.Kh3 Kg7 32.Bg5 h6 33.Be3 g5 34.Kg4 Kg6 35.Bc5 h5+ 36.Kh3 Kf5 37.Be3 g4+ 38.Kh4 Bf6+ 39.Kxh5 Rh8+ 40.Bh6 Bg7 41.e7 g3 42.e8=Q Rxe8 43.Rc5+ Kf6 44.Rc6+ Kf5 45.Bxg7 gxf2 46.Rf6+ Ke4 47.Bh6 f1=Q 48.Rf4+ Ke3 49.Rf8+ Kf2 50.Rxe8 Qb5+ 51.Bg5 Qxe8+ 52.Kg4 Qa4+ 53.Kh5 Qxa2 54.Bh4+ Kg2 55.Kg4 f2 0-1
2020.10.13 Titled Tuesday 13th Oct
1850041 IM Rakotomaharo, Fy Antenaina (2422) FM Elgersma, Onno (2298) 1-0
1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Ndb5 d6 7.a4 a6 8.Na3 d5 9.exd5 exd5 10.Bd3 Bd6 11.O-O O-O 12.Bg5 Be6 13.Nab1 Be5 14.Nd2 h6 15.Bh4 Qb6 16.Nb3 Qc7 17.Bg3 Rfe8 18.a5 Rad8 19.Re1 Bxg3 20.hxg3 d4 21.Ne4 Nxe4 22.Bxe4 Bxb3 23.cxb3 Nxa5 24.Qh5 Nxb3 25.Rad1 d3 26.Bd5 Rxe1+ 27.Rxe1 Nd4 28.Rd1 Ne2+ 29.Kf1 Rxd5 30.Qxd5 Nc1 31.Qd4 Qc2 32.Re1 d2 33.Re8+ Kh7 34.Rd8 Nd3 35.Qxd3+ 1-0
2020.10.13 Titled Tuesday 13th Oct
1849535 FM Guimaraes, W (2218) FM Elgersma, Onno (2298) 1-0
1.d4 d5 2.Bf4 Nf6 3.e3 c5 4.c3 e6 5.Nf3 Nc6 6.Nbd2 Nh5 7.Bg5 f6 8.Ng1 g6 9.Bh4 Ng7 10.f4 Nf5 11.Bf2 h5 12.Ngf3 Bd6 13.Bd3 Bd7 14.g3 cxd4 15.exd4 Kf7 16.O-O a6 17.Re1 b5 18.a4 Rb8 19.axb5 axb5 20.Qe2 Qb6 21.Kg2 Na5 22.h3 Nc4 23.b3 Nxd2 24.Qxd2 Nh6 25.Qc2 Rhg8 26.b4 Rbc8 27.Qb2 Qc6 28.Rac1 Ra8 29.Rf1 Ra4 30.Be3 Nf5 31.Bf2 Nh6 32.Bc2 Ra6 33.Bd3 Rga8 34.Qe2 Ra2 35.Rc2 Rxc2 36.Qxc2 Ra3 37.Bxg6+ Kf8 38.Bxh5 Nf5 39.g4 Bxf4 40.gxf5 Rxc3 41.Qa2 e5 42.dxe5 Bxf5 43.Bc5+ Kg7 44.exf6+ Kh6 45.Qf2 d4 46.Kg1 Be3 47.Bxd4 Bxf2+ 48.Bxf2 Rxf3 49.Bxf3 Qxf3 50.f7 Kg7 51.Bd4+ 1-0
2020.10.13 Titled Tuesday 13th Oct
1849826 FM Elgersma, Onno (2298) FM Marn, Jan (2352) 1-0
1.Nf3 Nf6 2.d4 e6 3.c4 d5 4.e3 b6 5.Nc3 Bb7 6.Bd2 Bd6 7.Bd3 O-O 8.Rc1 Nbd7 9.cxd5 Nxd5 10.O-O a6 11.e4 Nxc3 12.bxc3 c5 13.e5 Be7 14.Qe2 b5 15.a4 c4 16.Bc2 Nb6 17.Rb1 Bc6 18.axb5 axb5 19.Ra1 Nd5 20.Qe4 g6 21.Qg4 b4 22.h4 h5 23.Qg3 Kg7 24.cxb4 c3 25.Bg5 Bxg5 26.Nxg5 Nxb4 27.Nxe6+ 1-0
2020.10.13 Titled Tuesday 13th Oct
1848548 FM Elgersma, Onno (2298) WCM Tharushi, T H D Niklesha (1712) 1-0
1.e4 c5 2.Nf3 d6 3.Bb5+ Bd7 4.a4 a6 5.Bxd7+ Nxd7 6.O-O Ngf6 7.Nc3 g6 8.Re1 Bg7 9.a5 O-O 10.d3 Ng4 11.h3 Nge5 12.Nxe5 Nxe5 13.Nd5 e6 14.Nb6 Rb8 15.Bf4 Nd7 16.Bxd6 Nxb6 17.Bxf8 Bxb2 18.Bxc5 Nd7 19.Rb1 Bc3 20.Bb4 Bxe1 21.Qxe1 b6 22.axb6 Qxb6 23.Rb2 a5 24.Bc3 Qxb2 25.Bxb2 Rxb2 26.Qxa5 Rxc2 27.d4 Nf6 28.d5 Nxe4 29.dxe6 fxe6 30.Qa8+ Kg7 31.Qxe4 Rc1+ 32.Kh2 Rf1 33.Qd3 Kf7 34.Qxf1 1-0
2020.10.13 Titled Tuesday 13th Oct
1850359 FM Taras, I (2224) FM Elgersma, Onno (2298) 0-1
1.d4 d5 2.Bf4 Nf6 3.e3 c5 4.c3 e6 5.Nd2 Bd6 6.Bxd6 Qxd6 7.f4 h6 8.Ngf3 Rg8 9.Ne5 Nc6 10.Bd3 Bd7 11.O-O Rb8 12.a4 a6 13.Qe2 Ne7 14.Ndf3 Ne4 15.Nxd7 Qxd7 16.Ne5 Qc7 17.Bxe4 dxe4 18.c4 f6 19.Ng4 Nf5 20.Rad1 Rd8 21.d5 exd5 22.cxd5 Qe7 23.Rfe1 Kf7 24.Qc4 Kg6 25.d6 Nxd6 26.Qxc5 Nf5 27.Qxe7 Nxe7 28.Nf2 f5 29.g4 Kf6 30.gxf5 Kxf5 31.Kf1 Nd5 32.Ke2 Nb4 33.Rd4 Rxd4 34.exd4 Nd5 35.Nh3 Rc8 36.Rg1 Rc2+ 37.Kd1 Rxh2 38.Rxg7 Rxh3 39.Rf7+ Kg4 40.Rxb7 Kf3 41.Rd7 Ne3+ 42.Kd2 Rh2+ 43.Kc3 Rc2+ 44.Kb3 Rc8 45.f5 Nd1 46.f6 e3 47.f7 e2 48.Re7 Rf8 49.d5 Kf2 50.d6 e1=Q 0-1
2020.10.13 Titled Tuesday 13th Oct
1849083 FM Elgersma, Onno (2298) Sailer, M (2109) 1-0
1.e4 d5 2.exd5 Qxd5 3.Nc3 Qd6 4.Nf3 Nf6 5.Bc4 c6 6.d4 Bg4 7.Be3 e6 8.h3 Bh5 9.O-O Be7 10.a4 a5 11.g4 Bg6 12.Ne5 Nbd7 13.f4 Nd5 14.Bxd5 cxd5 15.Nb5 Qb8 16.f5 Nxe5 17.dxe5 exf5 18.gxf5 Qxe5 19.Bf4 Qxf5 20.Nc7+ Kf8 21.Nxa8 Bc5+ 22.Kh2 Bh5 23.Qd2 g5 24.Bg3 Qd7 25.Nc7 Bd6 26.Nxd5 Bxg3+ 27.Kxg3 Rg8 28.Qd3 Rg6 29.Nf6 Qc7+ 30.Kg2 Kg7 31.Nxh5+ Kh6 32.Ng3 g4 33.Nf5+ Kh5 34.hxg4+ Rxg4+ 35.Kh3 Qe5 36.Qf3 1-0
2020.10.03 Speed Chess Super Swiss
1859593 IM Barrionuevo, P (2259) FM Elgersma, Onno (2298) 0-1
1.d4 d6 2.e4 e5 3.Nf3 Nd7 4.Nc3 Ngf6 5.Bc4 Be7 6.O-O O-O 7.a4 c6 8.Ba2 b6 9.Re1 Bb7 10.h3 a6 11.Be3 Qc7 12.dxe5 dxe5 13.Qe2 b5 14.Bg5 h6 15.Bh4 Nc5 16.b4 Nxa4 17.Nxa4 bxa4 18.Bg3 Nd7 19.Red1 Bxb4 20.Rxd7 Qxd7 21.Nxe5 Qe7 22.Ng6 Qf6 23.Nxf8 Qxa1+ 24.Kh2 Rxf8 0-1
2020.10.03 Speed Chess Super Swiss
1859353 FM Elgersma, Onno (2298) WIM Kubicka, Anna (2252) 1-0
1.e4 c5 2.Nf3 d6 3.Bb5+ Nd7 4.d4 cxd4 5.Qxd4 a6 6.Bxd7+ Bxd7 7.Nc3 Rc8 8.O-O e5 9.Qd3 Be7 10.a4 h6 11.Nd2 Nf6 12.Nc4 Be6 13.Ne3 O-O 14.Rd1 Qc7 15.Bd2 Rfd8 16.b3 Qc5 17.a5 d5 18.exd5 Nxd5 19.Ncxd5 Bxd5 20.Nf5 Be6 21.Nxe7+ Qxe7 22.Qe4 Qf6 23.c4 Rd4 24.Qe2 Qg6 25.Bc3 Rg4 26.f3 Rg5 27.Bxe5 Bh3 28.Bg3 Bf5 29.h3 Bc2 30.Rd6 Qf5 31.Bh4 Rg6 32.Rxg6 Qxg6 33.Qe3 Kh7 34.Rc1 f6 35.Qc3 Bf5 36.Kh2 Re8 37.Re1 Qf7 38.Rxe8 Qxe8 39.b4 Qe2 40.c5 Bd3 41.Qe1 Qb2 42.Bg3 Qd4 43.Bd6 Qd5 44.Qg3 Qa2 45.Bf8 Bg6 46.h4 h5 47.Qc7 Qc4 48.Qxg7# 1-0
2020.10.03 Speed Chess Super Swiss
1860395 IM Arabidze, M (2437) FM Elgersma, Onno (2298) 1-0
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 a6 5.e3 dxc4 6.Bxc4 b5 7.Bb3 Bb7 8.O-O c5 9.Qe2 Nbd7 10.Rd1 Qb8 11.h3 Bd6 12.dxc5 Nxc5 13.Bc2 O-O 14.e4 b4 15.e5 Bxf3 16.Qxf3 Bxe5 17.Ne2 Qc7 18.Rb1 Rfd8 19.Be3 Nb7 20.Bb3 Rd2 21.Rxd2 1-0
2020.10.03 Speed Chess Super Swiss
1860669 FM Elgersma, Onno (2298) IM Javakhadze, Z (2441) 0-1
1.e4 c5 2.Nf3 d6 3.Bb5+ Nd7 4.d4 cxd4 5.Qxd4 a6 6.Bxd7+ Bxd7 7.Nc3 e5 8.Qd3 h6 9.O-O Nf6 10.Nd2 b5 11.a4 Rb8 12.axb5 axb5 13.Rd1 Be7 14.b4 O-O 15.Nf1 Qc7 16.Ne3 Bc6 17.Bb2 Rfc8 18.Nf5 Bf8 19.Ne3 Qb7 20.f3 Nd7 21.Ncd5 Bxd5 22.Nxd5 Nb6 23.Rd2 Nc4 24.Bc1 Nxd2 25.Bxd2 Ra8 26.Rxa8 Rxa8 27.c3 Ra2 28.h4 Qa7+ 29.Be3 Qa4 30.Nc7 Be7 31.Nxb5 Bxh4 32.Nxd6 Bg3 33.Bc1 Ra1 34.Qd2 Qa3 0-1
2020.10.03 Speed Chess Super Swiss
1859944 FM Elgersma, Onno (2298) FM Cezila, R (2314) 0-1
1.e4 c6 2.Nf3 d5 3.Nc3 Bg4 4.h3 Bh5 5.g4 dxe4 6.gxh5 exf3 7.Qxf3 Nf6 8.Bc4 e6 9.d3 h6 10.Rg1 Qa5 11.Qg3 Nxh5 12.Qh2 Nd7 13.Bd2 Qe5+ 14.Qxe5 Nxe5 15.Ke2 Nxc4 16.dxc4 O-O-O 17.Be3 Kb8 18.Ne4 Be7 19.c3 g5 20.Kf3 f5 21.Nc5 Bxc5 22.Bxc5 Rd3+ 23.Ke2 Nf4+ 24.Ke1 Nxh3 25.Rh1 Nf4 26.Rd1 Rhd8 27.Rc1 R3d7 28.Be3 Nd3+ 29.Ke2 Nxc1+ 30.Bxc1 f4 31.b3 Rh7 32.Rh5 Kc7 33.f3 Kd6 34.Ba3+ c5 35.b4 b6 36.Bb2 Ke5 37.Bc1 Kf5 38.Ba3 Kg6 39.Rh1 cxb4 40.cxb4 h5 41.c5 bxc5 42.bxc5 g4 43.Rc1 gxf3+ 44.Kxf3 Rd3+ 45.Kxf4 Rxa3 46.c6 Rc7 47.Rg1+ Kf6 48.Rc1 Ra4+ 49.Kg3 Ra6 0-1
2020.10.03 Speed Chess Super Swiss
1858939 GM Cordova, E (2592) FM Elgersma, Onno (2298) 0-1
1.d4 d5 2.Nf3 e6 3.c4 Nf6 4.g3 Be7 5.Bg2 O-O 6.O-O dxc4 7.Na3 Bxa3 8.bxa3 Bd7 9.Bb2 Bc6 10.Qc2 b5 11.Rad1 Nbd7 12.Rfe1 Be4 13.Qc1 c6 14.Ng5 Bxg2 15.Kxg2 h6 16.Nf3 Qb6 17.e4 Rfe8 18.h3 a5 19.g4 c5 20.g5 hxg5 21.Qxg5 Nh7 22.Qg3 Ndf6 23.Ne5 Rad8 24.d5 exd5 25.exd5 Qd6 26.f4 Nh5 27.Qh4 N7f6 28.Kh2 b4 29.Rg1 c3 30.Bc1 Rxe5 31.fxe5 Qxe5+ 32.Kh1 Rxd5 33.Rde1 Qf5 34.Rgf1 Qg6 35.Rg1 Qf5 36.Rgf1 Qd3 37.Bg5 Ng3+ 38.Kg2 Nxf1 39.Bxf6 Ne3+ 40.Kh1 gxf6 41.Rg1+ Rg5 42.Rxg5+ fxg5 43.Qxg5+ Kf8 44.Qxc5+ Kg7 45.Qg5+ Qg6 46.Qe5+ Qf6 47.Qg3+ Kf8 48.Qxe3 Qc6+ 49.Kh2 c2 50.Qc1 Qc3 51.axb4 axb4 52.Qh6+ Ke8 53.Qc1 b3 54.axb3 Qxb3 55.Qe1+ Kf8 56.Qc1 Qd3 57.Qh6+ Ke8 58.Qh8+ Ke7 59.Qe5+ Kd7 60.Qf6 c1=Q 61.Qxf7+ Kc6 62.Qf6+ Kb5 63.Qe5+ Qc5 64.Qb2+ Qb4 65.Qe5+ Ka4 66.Qa1+ Qba3 67.Qd1+ Qxd1 0-1
2020.10.03 Speed Chess Super Swiss
1860234 FM Elgersma, Onno (2298) Maiti, Milind (2068) 0-1
1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 5.Nc3 Qc7 6.Be3 a6 7.Qd2 Nf6 8.f4 b5 9.Nxc6 Qxc6 10.e5 Ng4 11.Bd4 Bb7 12.h3 Nh6 13.O-O-O Rc8 14.Kb1 Nf5 15.Bf2 Bb4 16.Rg1 Bxc3 17.bxc3 Qxc3 18.Qxc3 Rxc3 19.Bd3 Rc8 20.g4 Ne7 21.Be1 Nd5 22.Bd2 O-O 23.Kb2 Nb6 24.Bb4 Rfe8 25.a3 Bd5 26.Rgf1 Nc4+ 27.Bxc4 Rxc4 28.Rf2 Rec8 29.Rdd2 Re4 30.Rde2 Rxe2 31.Rxe2 Rc4 32.Rf2 h6 33.h4 Re4 34.g5 h5 35.Bd2 Kh7 36.Kc1 Ra4 37.Kb2 Kg6 38.f5+ exf5 39.Rf4 Be4 40.Bc3 Rc4 41.Rf2 Bc6 42.Rd2 f4 43.Rd6+ Kf5 44.e6 fxe6 45.Bxg7 f3 46.Rd2 Rf4 47.Bd4 Rxd4 48.Rxd4 f2 49.Rd1 Bg2 50.Kc3 f1=Q 51.Rxf1+ Bxf1 52.Kd4 Bc4 53.Kc5 e5 54.Kd6 e4 55.Kxd7 e3 56.Ke7 e2 57.Kd6 e1=Q 58.Kc5 Qe6 59.Kb4 Qe7+ 60.Ka5 Qxa3+ 61.Kb6 b4 62.Kc5 b3+ 63.Kxc4 b2 64.Kd4 b1=Q 65.c3 Qbb4+ 66.cxb4 Qxb4+ 67.Kd5 Qb5+ 0-1
2020.10.03 Speed Chess Super Swiss
1860503 FM Wagh, Suyog (2246) FM Elgersma, Onno (2298) 0-1
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.cxd5 exd5 5.Bg5 c6 6.e3 Bd6 7.Bd3 O-O 8.Qc2 h6 9.Bh4 Re8 10.Nge2 a5 11.O-O Na6 12.a3 Bxh2+ 13.Kxh2 Ng4+ 14.Kg3 g5 15.Rh1 gxh4+ 16.Rxh4 Qg5 0-1
2020.10.03 Speed Chess Super Swiss
1859737 GM Gabrielian, A (2458) FM Elgersma, Onno (2298) 1-0
1.e4 c6 2.d4 d5 3.Nd2 dxe4 4.Nxe4 Nf6 5.Nxf6+ exf6 6.c3 Bd6 7.Bd3 O-O 8.Qc2 Re8+ 9.Ne2 h5 10.O-O h4 11.h3 Nd7 12.Bd2 Nf8 13.Rfe1 Bb8 14.Rad1 Qd6 15.Bf4 Rxe2 16.Bxd6 Rxc2 17.Ba3 Rxf2 18.Re8 Bh2+ 19.Kxf2 Bg3+ 20.Kf1 1-0
2020.10.03 Speed Chess Super Swiss
1858974 FM Elgersma, Onno (2298) GM Vasquez Schroeder, R (2441) 0-1
1.e4 c5 2.Nf3 d6 3.Bb5+ Bd7 4.a4 Nc6 5.O-O Nf6 6.Nc3 e6 7.Re1 Be7 8.d3 O-O 9.h3 b6 10.Bf4 a6 11.Bxc6 Bxc6 12.e5 dxe5 13.Nxe5 Bb7 14.Qe2 Nd5 15.Nxd5 Qxd5 16.f3 Rae8 17.Nc4 Qd8 18.Kh1 Bd5 19.b3 f6 20.Bh2 e5 21.Nd2 Qd7 22.Nc4 Qb7 23.Ne3 Be6 24.Qf2 Bd8 25.Qg3 Bc7 26.Nc4 b5 27.axb5 axb5 28.Ne3 Bb6 29.Qf2 Ra8 30.f4 exf4 31.Bxf4 Qd7 32.Qg3 Kh8 33.Bd6 Rfe8 34.Bf4 Rad8 35.Ra6 Qb7 36.Raa1 g5 37.Bxg5 fxg5 38.Qg4 Bxg4 0-1
2020.10.03 Speed Chess Super Swiss
1859242 GM Matinian, N (2470) FM Elgersma, Onno (2298) 1/2-1/2
1.Nf3 Nf6 2.g3 d5 3.Bg2 e6 4.O-O Be7 5.d4 O-O 6.c4 dxc4 7.Nbd2 b5 8.a4 b4 9.Nxc4 Bb7 10.Bg5 Nbd7 11.Rc1 c5 12.Nfe5 Bxg2 13.Kxg2 Nxe5 14.dxe5 Nd5 15.Bxe7 Qxe7 16.e4 Nb6 17.Qd6 Qxd6 18.exd6 Nxa4 19.e5 Nb6 20.Na5 Rac8 21.Rfd1 Rfd8 22.Nb7 Rd7 23.Nxc5 Rdd8 24.Nb7 Rf8 25.Rxc8 Rxc8 26.d7 Nxd7 27.Rxd7 h6 28.Nd6 Rc2 29.Rxf7 Rxb2 30.Rxa7 b3 31.Rb7 Rb1 32.Ne8 b2 33.Nc7 Rc1 34.Rxb2 Rxc7 35.Rb6 Re7 36.h4 Kf7 37.h5 Rc7 38.f4 Rc2+ 39.Kf3 Rc1 40.Rb7+ Kf8 41.g4 Rc3+ 42.Ke4 Rc4+ 43.Ke3 Ra4 44.Rb3 Kf7 45.Rd3 Rb4 46.Rd4 Rb3+ 47.Rd3 Rb1 48.f5 Re1+ 49.Kf4 Rf1+ 50.Rf3 Re1 51.Re3 Rf1+ 52.Ke4 Ke7 53.Ra3 Re1+ 54.Kf4 Rf1+ 55.Ke4 Re1+ 56.Kd4 Rd1+ 57.Kc3 Rd5 58.Ra7+ Kf8 59.fxe6 Rxe5 60.Rf7+ Kg8 61.Re7 Kf8 62.Kd4 Re1 63.Rf7+ Ke8 64.Kd5 Rd1+ 65.Ke5 Re1+ 66.Kf5 Rf1+ 67.Kg6 Rxf7 68.exf7+ Kf8 69.Kh7 Kxf7 70.Kh8 Kf8 71.Kh7 Kf7 72.Kh8 Kf8 73.Kh7 Kf7 1/2-1/2
2020.10.03 Speed Chess Super Swiss
1860798 FM Elgersma, Onno (2298) Kruglyakov, P (2363) 1-0
1.e4 c5 2.Nf3 d6 3.Bb5+ Nd7 4.d4 cxd4 5.Qxd4 a6 6.Bxd7+ Bxd7 7.Nc3 e5 8.Qd3 Rc8 9.O-O Qc7 10.Rd1 h6 11.a4 Nf6 12.Nd2 Be7 13.Nf1 Qc4 14.Ne3 Qxd3 15.Rxd3 Be6 16.Bd2 O-O 17.Be1 Rc6 18.Rad1 Rfc8 19.f3 Kf8 20.g3 g6 21.Kg2 Nd7 22.g4 Nc5 23.R3d2 Bg5 24.Bf2 Be7 25.a5 Nd7 26.Rc1 Bg5 27.h4 Bd8 28.Ncd5 Bxa5 29.c3 Bd8 30.Nb4 R6c7 31.Rxd6 Be7 32.Rxd7 Rxd7 33.Nbd5 Bc5 34.Rd1 Kg7 35.g5 hxg5 36.hxg5 Bxe3 37.Bxe3 b5 38.f4 Bxd5 39.exd5 Rcd8 40.fxe5 Rxd5 41.Bd4 Kf8 42.Kf3 Ke7 43.Ke4 R5d7 44.Ra1 Ra8 45.Rf1 Rdd8 46.Bc5+ Ke8 47.Bd4 Ke7 48.Rh1 Rh8 49.Rf1 Rh4+ 50.Kd5 Rh3 51.Bc5+ Ke8 52.e6 Rd8+ 53.Ke5 Rh7 54.Kf6 Rd2 55.Re1 fxe6 56.Rxe6+ Kd7 57.Re5 Rh3 58.Kxg6 Rxb2 59.Rd5+ Kc6 60.Rf5 Rg2 61.Bd4 1-0
2020.10.03 Speed Chess Super Swiss
1859566 FM Elgersma, Onno (2298) FM Willow, Jonah B (2386) 0-1
1.e4 c5 2.Nf3 Nc6 3.Bb5 g6 4.O-O Bg7 5.c3 Nf6 6.Re1 O-O 7.h3 e5 8.a3 d6 9.b4 cxb4 10.axb4 Be6 11.d3 a6 12.Bxc6 bxc6 13.Be3 a5 14.bxa5 Rxa5 15.Rxa5 Qxa5 16.c4 Rb8 17.Nbd2 Qc3 18.Nf1 Rb3 19.c5 dxc5 20.Qc1 Nd7 21.Rd1 Qxc1 22.Bxc1 Rb1 23.Ne3 Bh6 24.Bd2 Rxd1+ 25.Nxd1 Bxd2 26.Nxd2 Nb6 27.Ne3 f5 28.Kf1 fxe4 29.dxe4 c4 30.Nb1 Na4 31.Nd1 Kf7 32.Nbc3 Nc5 33.Ke2 Ke7 34.Ke3 Nd3 35.h4 Kd6 36.g3 Kc5 37.f4 Kb4 38.fxe5 Nxe5 39.Ne2 c5 40.Nf4 Bf7 41.Kd2 Nf3+ 42.Kc2 Nd4+ 43.Kd2 Nb5 44.Ne2 Kb3 45.Ndc3 Nd4 46.Nc1+ Kb4 47.N1a2+ Ka5 48.Nc1 Kb6 49.Ke3 Kc6 50.N1e2 Nb5 51.Nd1 Kd6 52.Nec3 Nd4 53.Nf2 Be6 54.Ne2 Ke5 55.Nf4 Bf7 56.Ng4+ Kd6 57.e5+ Ke7 58.Ke4 c3 59.Ne3 c2 60.Ne2 Nxe2 61.Kd3 Nxg3 62.Kxc2 Nf5 63.Kd2 Nxe3 64.Kxe3 Ke6 65.Kf4 h6 66.Ke4 g5 67.hxg5 hxg5 68.Ke3 Kxe5 69.Kf3 Bd5+ 70.Kg3 c4 71.Kg4 c3 72.Kxg5 c2 73.Kg6 c1=Q 74.Kg7 Qf1 75.Kh6 Be6 76.Kh5 Qg1 77.Kh4 Kf6 78.Kh5 Qg5# 0-1
2020.10.03 Speed Chess Super Swiss
1860081 FM Stoyanov, Tsvetan (2387) FM Elgersma, Onno (2298) 0-1
1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Ndb5 d6 7.Bf4 e5 8.Bg5 a6 9.Na3 b5 10.Nd5 Be7 11.Bxf6 Bxf6 12.c4 b4 13.Nc2 O-O 14.g3 Rb8 15.b3 g6 16.Bg2 Bg7 17.O-O a5 18.Qd3 Be6 19.Rad1 Bxd5 20.Qxd5 Nd4 21.Nxd4 exd4 22.Rxd4 Bxd4 23.Qxd4 Qb6 24.Qd3 Qc5 25.Rd1 Rfd8 26.Kf1 Ra8 27.Qd5 Qxd5 28.Rxd5 a4 29.Ke2 axb3 30.axb3 Ra2+ 31.Ke3 Rb2 32.Rd3 Kf8 33.Bf3 Ke7 34.Bd1 Ra8 35.f4 Ra1 36.h4 Rbb1 37.Bf3 Ra3 38.Bd1 Raa1 39.Bf3 Re1+ 40.Kd4 Reb1 41.e5 dxe5+ 42.fxe5 Ra3 43.Bd1 Ra5 44.c5 Rc1 45.Bf3 Rcxc5 46.Re3 Rc1 47.Be2 Rc3 48.Rxc3 bxc3 49.Kxc3 Rxe5 50.Kd2 Kd6 51.Bd3 Kc5 52.Bc4 f5 53.Kd3 h6 54.Bf7 g5 55.hxg5 hxg5 56.Bg6 f4 57.gxf4 gxf4 58.Bh5 Re3+ 59.Kd2 Rxb3 0-1
2020.10.03 Speed Chess Super Swiss
1860340 FM Elgersma, Onno (2298) IM Vlassov, N (2352) 1-0
1.e4 Nc6 2.Nf3 d5 3.exd5 Qxd5 4.Nc3 Qa5 5.Bb5 Bd7 6.O-O a6 7.Bc4 Nf6 8.d4 O-O-O 9.h3 e5 10.d5 Be6 11.Ng5 Nxd5 12.Nxe6 fxe6 13.Qg4 Nxc3 14.Bxe6+ Kb8 15.bxc3 Qxc3 16.Rb1 Nd4 17.Be3 h5 18.Qg6 Qc6 19.Bf7 Rd6 20.Qg5 Rf6 21.Bxd4 exd4 22.Bd5 Qc5 23.Rxb7+ Kc8 24.Qe5 Bd6 25.Qe4 Rhf8 26.Rfb1 Kd7 27.Rb8 c6 28.Rxf8 cxd5 29.Qe8+ Kc7 30.Qc8# 1-0
2020.09.15 Titled Tuesday 15th Sept
1872398 FM Martins, Ca1 (2231) FM Elgersma, Onno (2298) 1-0
1.e4 c6 2.d4 d5 3.Nd2 dxe4 4.Nxe4 Nf6 5.Nxf6+ exf6 6.c3 Bd6 7.Bd3 O-O 8.Qc2 Re8+ 9.Ne2 h5 10.O-O h4 11.h3 Nd7 12.Re1 Nf8 13.Be3 Bb8 14.Qd2 Qd6 15.f4 f5 16.Bf2 Qh6 17.Qc2 g6 18.Qd2 Nh7 19.c4 Nf6 20.Nc3 Bd7 21.Rxe8+ Bxe8 22.Re1 Bxf4 23.Be3 Bxe3+ 24.Rxe3 Kg7 25.Qf2 Bd7 26.d5 Re8 27.Rxe8 Bxe8 28.Bf1 b6 29.dxc6 Bxc6 30.Qd4 Qg5 31.Nd5 Bxd5 32.cxd5 Qg3 33.d6 Kh6 34.Qxf6 Qe3+ 35.Kh1 Qf2 36.Qh8+ Kg5 37.Qd8+ Kf4 38.Qc7 Qxf1+ 39.Kh2 Kg5 40.d7 1-0
2020.09.15 Titled Tuesday 15th Sept
1871949 WFM Vifleemskaia, S (1943) FM Elgersma, Onno (2298) 0-1
1.d4 d5 2.c4 e6 3.Nf3 Nf6 4.g3 dxc4 5.Bg2 a6 6.O-O Nc6 7.e3 Rb8 8.Nfd2 e5 9.Bxc6+ bxc6 10.dxe5 Ng4 11.Nxc4 Be6 12.Nbd2 Bb4 13.Qe2 h5 14.f3 h4 15.fxg4 hxg3 16.hxg3 Qg5 17.Rf4 Qh6 18.Qg2 Bd5 19.e4 Bc5+ 20.Kf1 Be6 21.Ke2 Rd8 22.b3 Qg6 23.Kd1 Be3 24.Nxe3 Qg5 25.Bb2 a5 26.Kc2 a4 27.Ndc4 axb3+ 28.axb3 Qe7 29.Rd1 Ra8 30.Rff1 Rb8 31.Qd2 Qc5 32.Rf2 Rh3 33.Rg2 Qb5 34.Qc3 Qa6 35.Ra1 Qb5 36.Ra5 Qb7 37.Nf5 Rh1 38.Nfe3 c5 39.Qd3 Rd8 40.Nd5 c6 41.Rxc5 cxd5 42.Rd2 d4 43.Bxd4 Rb8 44.Bb2 Bxc4 45.Rxc4 Rh6 46.Qd5 Qxb3+ 47.Kc1 Rh1+ 48.Rd1 Rxd1+ 0-1
2020.09.15 Titled Tuesday 15th Sept
1872499 FM Elgersma, Onno (2298) WIM Matveeva, O (2171) 0-1
1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.e5 Nfd7 5.f4 c5 6.Nf3 Nc6 7.Be3 cxd4 8.Nxd4 Bc5 9.Qd2 O-O 10.O-O-O a6 11.Nxc6 bxc6 12.Bxc5 Nxc5 13.Bd3 Rb8 14.h4 Qb6 15.b3 a5 16.h5 a4 17.h6 g6 18.f5 exf5 19.Qg5 Qd8 20.Qg3 Be6 21.Ne2 axb3 22.axb3 Qa5 23.Nf4 Nxb3+ 0-1
2020.09.15 Titled Tuesday 15th Sept
1871540 FM Elgersma, Onno (2298) GM Jobava, Ba (2603) 0-1
1.e4 c5 2.Nf3 e6 3.b3 d5 4.exd5 exd5 5.Bb2 Nc6 6.Bb5 Nf6 7.O-O Be7 8.Ne5 Bd7 9.Bxc6 Bxc6 10.Qf3 O-O 11.Nxc6 bxc6 12.d3 a5 13.a4 Nd7 14.Nd2 Bf6 15.Bxf6 Nxf6 16.Rfe1 Qb6 17.Nf1 Rae8 18.Ng3 Qb4 19.Rxe8 Rxe8 20.Rf1 Qc3 21.Qd1 g6 22.Ne2 Qe5 23.Ng3 Kg7 24.Qd2 h5 25.h3 h4 26.Nh1 Nh5 27.Qd1 Nf4 0-1
2020.09.15 Titled Tuesday 15th Sept
1872120 FM Elgersma, Onno (2298) FM Sorokin, Aleksey (2521) 0-1
1.e4 c6 2.Nf3 d5 3.Nc3 dxe4 4.Nxe4 Nf6 5.Qe2 Nxe4 6.Qxe4 Qd5 7.Qf4 Qf5 8.Qe3 Qe6 9.b3 Qxe3+ 10.fxe3 f6 11.Bb2 e5 12.d3 Bb4+ 13.Kf2 O-O 14.Be2 Na6 15.a3 Be7 16.h3 e4 17.dxe4 Nc5 18.Nd2 Rd8 19.Bd4 Ne6 20.Bc4 Kf8 21.Nf3 b5 22.Bxe6 Bxe6 23.b4 Rd7 24.c3 Kg8 25.e5 f5 26.h4 Bd5 27.Ng5 Re8 28.Nf3 Bd8 29.Rad1 Bc7 30.Rhg1 Rde7 31.h5 Bxf3 32.gxf3 Bxe5 33.Bxe5 Rxe5 34.Rd7 R8e7 35.Rxe7 Rxe7 36.Rd1 Kf7 37.Rd8 Kf6 38.Rc8 Re6 39.Rc7 Rd6 40.Rxa7 Rd2+ 41.Kg3 Rd3 42.Kf4 Rxc3 43.Ra6 g5+ 44.hxg6 hxg6 45.a4 bxa4 46.Rxa4 g5+ 47.Kg3 Rxe3 48.Ra6 g4 49.Rxc6+ Kg5 50.b5 Rxf3+ 51.Kg2 Rb3 52.Rb6 Kf4 53.Rb8 Rb2+ 54.Kh1 Kg3 0-1
2020.08.11 Titled Tue 11th Aug
1902601 FM Elgersma, Onno (2298) FM Seletsky, G (2272) 1-0
1.e4 c6 2.Nf3 d5 3.Nc3 Bg4 4.h3 Bxf3 5.Qxf3 e6 6.Be2 Nd7 7.d4 dxe4 8.Nxe4 Ngf6 9.c3 Nxe4 10.Qxe4 Nf6 11.Qf3 Qd5 12.O-O Qxf3 13.Bxf3 Bd6 14.a4 O-O-O 15.Bg5 e5 16.Bxf6 gxf6 17.d5 Kc7 18.Be4 h5 19.Rfd1 h4 20.Kf1 Rh5 21.dxc6 bxc6 22.Bf3 Rg5 23.c4 f5 24.c5 Bxc5 25.Rxd8 Kxd8 26.Bxc6 a5 27.Bd5 Ke7 28.Rc1 Kd6 29.Bxf7 Rg7 30.Bc4 Bd4 31.b3 e4 32.Be2 Rb7 33.Bb5 Ke5 34.Rc6 Kf4 35.Rh6 Kg5 36.Rd6 Bc5 37.Rd5 Bb4 38.Ke2 Rc7 39.Bc4 Kf4 40.Rd8 Rc6 41.Rh8 Kg5 42.Rg8+ Kf4 43.g3+ hxg3 44.fxg3+ Ke5 45.h4 Rd6 46.Re8+ Kf6 47.Rf8+ Ke5 48.h5 Rd2+ 49.Kf1 Rh2 50.Rh8 Kd4 51.Kg1 Rb2 52.h6 Ke3 53.h7 Kf3 54.Rf8 Bc5+ 55.Kh1 Rb1+ 56.Kh2 Bg1+ 57.Kh3 1-0
2020.08.11 Titled Tue 11th Aug
1900314 GM Demchenko, A (2641) FM Elgersma, Onno (2298) 1-0
1.e4 c6 2.Nf3 d5 3.d3 g6 4.Nbd2 Bg7 5.g3 e5 6.Bg2 Ne7 7.O-O O-O 8.c3 Bg4 9.h3 Bxf3 10.Nxf3 Nd7 11.Re1 Qc7 12.b4 a5 13.a4 f5 14.Qb3 h6 15.Ba3 Rae8 16.bxa5 Kh7 17.Rab1 dxe4 18.dxe4 fxe4 19.Nd2 e3 20.Rxe3 Nf5 21.Ree1 Rg8 22.Qxb7 Rc8 23.a6 Nf6 24.Ne4 Nxe4 25.Bxe4 1-0
2020.08.11 Titled Tue 11th Aug
1902404 GM Djukic, Ni (2525) FM Elgersma, Onno (2298) 1-0
1.e4 c6 2.d4 d5 3.e5 Bf5 4.c3 e6 5.Be3 c5 6.dxc5 Nd7 7.Bb5 Ne7 8.Nf3 a6 9.Ba4 Qc7 10.Nbd2 Nc6 11.O-O Bxc5 12.Bxc5 Nxc5 13.Bxc6+ bxc6 14.Nb3 Nd7 15.Qd4 c5 16.Qa4 O-O 17.Rfe1 Bg6 18.Qa5 Qxa5 19.Nxa5 Rfc8 20.c4 d4 21.Nd2 Rab8 22.b3 Kf8 23.f4 h5 24.g3 Ke7 25.Kf2 Bf5 26.a3 Rb6 27.Ra2 Rcb8 28.Rb2 Ke8 29.Ne4 Bxe4 30.Rxe4 Nf8 31.Re1 Ng6 32.Reb1 Ne7 33.Ke2 Nf5 34.Kd3 Ne3 35.b4 Kd7 36.Rb3 cxb4 37.axb4 Nf5 38.b5 axb5 39.cxb5 Ne7 40.Kxd4 Nf5+ 41.Ke4 Ke8 42.Nc4 R6b7 43.b6 Rd7 44.Rd3 Rxd3 45.Kxd3 Kd7 46.b7 Kc7 47.Na5 Ne7 48.Kc4 Nc6 49.Nxc6 Kxc6 50.h3 Rxb7 51.Rxb7 Kxb7 52.Kc5 Kc7 53.g4 hxg4 54.hxg4 f6 55.Kb5 Kb7 56.exf6 gxf6 57.g5 fxg5 58.fxg5 e5 59.g6 e4 60.Kc4 e3 61.Kd3 e2 62.Kxe2 1-0
2020.08.11 Titled Tue 11th Aug
1901137 IM Kashlinskaya, A (2494) FM Elgersma, Onno (2298) 0-1
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.cxd5 exd5 5.Bg5 c6 6.e3 Bd6 7.Bd3 O-O 8.Qc2 h6 9.Bh4 Re8 10.Nge2 a5 11.h3 Na6 12.a3 Nc7 13.O-O Ne6 14.f4 Nc7 15.e4 dxe4 16.Nxe4 Be7 17.Nxf6+ Bxf6 18.Bxf6 Qxf6 19.Nc3 Qxd4+ 20.Kh2 Qf6 21.Ne4 Qh4 22.f5 Nd5 23.Rf3 Bxf5 24.Rxf5 Ne3 25.Qf2 Ng4+ 0-1
2020.08.11 Titled Tue 11th Aug
1900906 FM Elgersma, Onno (2298) IM Costachi, M (2471) 1-0
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.d3 b5 6.Bb3 Bc5 7.O-O d6 8.a3 h6 9.Nc3 g5 10.Nd5 g4 11.Nd2 h5 12.Kh1 h4 13.f4 exf4 14.Rxf4 Bd4 15.Qf1 Rh6 16.c3 Be5 17.Nxf6+ Rxf6 18.Rxf6 Qxf6 19.d4 Qxf1+ 20.Nxf1 Bf6 21.Bf4 h3 22.Ne3 Na5 23.Bd5 c6 24.Ba2 Ke7 25.Rf1 Nb7 26.Bg3 hxg2+ 27.Kxg2 Bd7 28.Nf5+ Bxf5 29.Rxf5 Rg8 30.Kf2 Rg7 31.Kg2 a5 32.Rf4 a4 33.Rf5 Bg5 34.Bf4 Bxf4 35.Rxf4 Na5 36.Kg3 Nc4 37.Bxc4 bxc4 38.Rxg4 Rh7 39.Rf4 f6 40.h4 Rg7+ 41.Rg4 Rh7 42.Rg8 Ke6 43.Re8+ Kf7 44.Rc8 Rg7+ 45.Kh3 Rg1 46.Rxc6 Rb1 47.Rxc4 Rxb2 48.Rxa4 Rb3 49.Rc4 Rxa3 50.Kg4 Ra1 51.h5 Rg1+ 52.Kf4 Rf1+ 53.Ke3 Rh1 54.Rc7+ Ke8 55.Rh7 Rh3+ 56.Kd2 Kf8 57.Kc2 Kg8 58.Rd7 d5 59.Rxd5 Kf7 60.Kb3 Ke6 61.Kc4 Rxh5 62.Rxh5 1-0
2020.08.11 Titled Tue 11th Aug
1902211 FM Elgersma, Onno (2298) WCM Nguyen, Hong Nhung (1697) 1-0
1.e4 c5 2.Nf3 e6 3.b3 Nc6 4.Bb2 d5 5.exd5 exd5 6.Bb5 Nf6 7.O-O Be7 8.Bxc6+ bxc6 9.Re1 O-O 10.Ne5 Qc7 11.d3 Bd6 12.Nd2 Re8 13.Ndf3 Bg4 14.Nxg4 Nxg4 15.h3 Bh2+ 16.Kf1 Nxf2 17.Kxf2 Bg3+ 18.Kg1 Bxe1 19.Nxe1 Qg3 20.Nf3 d4 21.Qf1 Re6 22.Qf2 Qf4 23.Bc1 Qd6 24.Bd2 Rae8 25.Re1 Rxe1+ 26.Bxe1 h6 27.Kf1 Re6 28.Bd2 Qe7 29.a4 Rf6 30.Qg3 Qe8 31.Qc7 Re6 32.Qxa7 Rf6 33.Qxc5 Qe6 34.Qxd4 Qf5 35.Qe4 Qc5 36.Qc4 Qa3 37.a5 Qa1+ 38.Kf2 Qa2 39.a6 c5 40.Qxc5 Qxa6 41.Bc3 Rc6 42.Qd4 Rg6 43.Qd8+ Kh7 44.Qd4 Qb5 45.Qc4 Qb6+ 46.Bd4 Qe6 47.Be3 Qd7 48.Qe4 f5 49.Qc4 Re6 50.b4 Qe7 51.Bd4 Re2+ 52.Kf1 Re6 53.b5 Qd7 54.b6 Re7 55.Bf2 Qb7 56.Qf4 Rf7 57.h4 g6 58.h5 g5 59.Qd6 Rd7 60.Qg6+ Kh8 61.Qxh6+ Rh7 62.Qf6+ Rg7 63.Nxg5 Kg8 64.Qe6+ Kh8 65.Nf3 Kh7 66.Bd4 Re7 67.Qg6# 1-0
2020.08.11 Titled Tue 11th Aug
1901740 FM Elgersma, Onno (2298) IM Skliarov, V (2376) 0-1
1.e4 c5 2.Nf3 Nc6 3.Bb5 e6 4.O-O Nge7 5.Re1 Nd4 6.Nxd4 cxd4 7.d3 a6 8.Ba4 b5 9.Bb3 Ng6 10.Nd2 Be7 11.Nf3 Qb6 12.a4 Bb7 13.axb5 axb5 14.Rxa8+ Bxa8 15.Bd2 O-O 16.Qe2 f5 17.e5 Qc6 18.Ra1 Nh4 19.Nxh4 Bxh4 20.f3 Be7 21.Qf2 g5 22.Bxg5 Bxg5 23.Qg3 h6 24.h4 Kf7 25.hxg5 Rg8 26.Qf4 Rxg5 27.Kf2 Kg6 28.Rh1 Qc5 29.Qh4 h5 30.Qf4 Bd5 31.Rc1 Bxb3 32.cxb3 Qb4 33.Rc2 Qxb3 34.Qd2 Qd5 35.Rc7 Qxe5 36.Rxd7 Qe3+ 37.Qxe3 dxe3+ 38.Kxe3 Rxg2 39.Re7 Kf6 40.Rh7 Ke5 41.Rxh5 Rxb2 42.f4+ Kd5 43.Rh7 b4 44.Rd7+ Kc6 45.Rc7+ Kxc7 0-1
2020.08.11 Titled Tue 11th Aug
1900732 FM Elgersma, Onno (2298) CM Li, Hui (1985) 1-0
1.e4 c5 2.Nf3 d6 3.Bb5+ Bd7 4.Bxd7+ Qxd7 5.O-O Nf6 6.Re1 Nc6 7.c3 e6 8.d4 cxd4 9.cxd4 d5 10.e5 Ne4 11.Nbd2 Nxd2 12.Bxd2 Be7 13.h4 O-O 14.h5 h6 15.Rc1 Rfc8 16.Qb3 Bf8 17.g4 Ne7 18.Bb4 Rxc1 19.Rxc1 Rc8 20.Rxc8 Qxc8 21.Bd6 b6 22.Kg2 Qc4 23.Qxc4 dxc4 24.Bxe7 Bxe7 25.Nd2 b5 26.f4 Bb4 27.Nb1 Kf8 28.Kf3 Ke7 29.Ke4 Kd7 30.d5 exd5+ 31.Kxd5 a6 32.g5 Be1 33.gxh6 gxh6 34.f5 Bg3 35.Nc3 Bf4 36.Ne4 Bc1 37.Nc5+ Ke7 38.f6+ Ke8 39.Nxa6 Bxb2 40.Nc7+ Kf8 41.Nxb5 c3 42.Nd4 Ba3 43.Nc2 Bc1 44.a4 Ke8 45.a5 Kd7 46.a6 Kc7 47.e6 fxe6+ 48.Kxe6 Bf4 49.f7 Bd6 50.a7 Kb7 51.Kxd6 1-0
2020.08.11 Titled Tue 11th Aug
1901549 FM Elgersma, Onno (2298) IM Nitin, S (2381) 0-1
1.e4 c5 2.Nf3 e6 3.b3 b6 4.Bb2 Bb7 5.Qe2 d6 6.g3 Nf6 7.d3 Be7 8.Bg2 O-O 9.O-O Nbd7 10.Nbd2 Qc7 11.a4 a6 12.e5 dxe5 13.Nxe5 Bxg2 14.Kxg2 Nd5 15.Nxd7 Qxd7 16.Ne4 f5 17.Nd2 Bf6 18.Bxf6 Rxf6 19.f4 Nb4 20.Nf3 Re8 21.Rae1 Nc6 22.Qe3 Qd5 23.Kg1 Rf7 24.Rf2 Nd4 25.Nxd4 cxd4 26.Qe5 Qxe5 27.Rxe5 Rc7 28.Rfe2 Kf7 29.Kf2 Rc6 30.Ke1 Rec8 31.Kd1 Rd6 32.Kc1 Kf6 33.Kb2 h6 34.a5 b5 35.Ka3 g5 36.Kb4 Rdc6 37.h4 g4 38.Ka3 Rd8 39.Kb4 Rdc8 40.Ka3 Kf7 41.Kb4 Rxc2 42.Rxe6 Rxe2 43.Rxe2 Rc3 44.Rd2 Ke6 45.Ka3 Kd6 46.Kb4 Rc1 47.Re2 Rd1 48.Re5 Rxd3 49.Rxf5 Rxg3 50.Rf6+ Kd5 51.Rxh6 d3 52.Rh8 Kd4 53.f5 Rf3 54.Rd8+ Ke3 55.Re8+ Kf2 56.Kc3 g3 57.f6 g2 58.f7 Rxf7 59.Kxd3 g1=Q 60.Re2+ Kf3 0-1
2020.08.04 Titled Tue 4th Aug 10am
1906698 Rekhson, V (2074) FM Elgersma, Onno (2298) 1-0
1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Nf6 5.Nxf6+ exf6 6.Ne2 Bd6 7.Bf4 O-O 8.Qd2 Re8 9.O-O-O a5 10.Ng3 a4 11.a3 Be6 12.Bd3 b5 13.Bxd6 Qxd6 14.Nf5 Qd5 15.g4 Qa2 16.Qb4 Na6 17.Qc3 Qd5 18.Rhe1 Rac8 19.Be4 Qd7 20.Qf3 b4 21.Bd3 bxa3 22.bxa3 Nc7 23.Qf4 Nd5 24.Qd6 Qa7 25.Qc5 Qb7 26.Nd6 Qc7 27.Nxe8 Rxe8 28.Bf5 Qf4+ 29.Kb1 Rb8+ 30.Ka1 Bxf5 31.gxf5 Qxf5 32.Qxc6 h5 33.Re8+ Rxe8 34.Qxe8+ Kh7 35.Qe2 Nc3 36.Qd3 Qxd3 37.Rxd3 Nd5 38.c4 Nf4 39.Rd2 Ne6 40.c5 Nc7 41.d5 1-0
2020.08.04 Titled Tue 4th Aug 2pm
1909005 FM Elgersma, Onno (2298) WFM Idrisova, R (1960) 1-0
1.e4 c6 2.Nf3 d5 3.Nc3 a6 4.d4 Bg4 5.h3 Bh5 6.Be3 e6 7.Be2 Nf6 8.e5 Nfd7 9.O-O Be7 10.Nd2 Bg6 11.Bd3 Bxd3 12.cxd3 O-O 13.f4 f5 14.a4 c5 15.Nf3 Nc6 16.Qb3 Rb8 17.Ne2 Na5 18.Qd1 c4 19.Nc3 cxd3 20.Qxd3 Nc4 21.b3 Na5 22.Rac1 Qb6 23.Rb1 Rfc8 24.Nd2 Qb4 25.Ne2 Nc6 26.g4 g6 27.Kg2 Qb6 28.Rbc1 Nb4 29.Qb1 Qd8 30.Ng3 Rxc1 31.Rxc1 Rc8 32.Nf3 Rxc1 33.Qxc1 Nf8 34.Ng5 Qd7 35.Ne2 h6 36.Nf3 Qc6 37.Kg3 Kf7 38.Bd2 Qxc1 39.Nxc1 Nc6 40.Nd3 Nd7 41.Bc3 b5 42.axb5 axb5 43.h4 b4 44.Bb2 Ndb8 45.h5 gxh5 46.gxf5 exf5 47.Nd2 Na6 48.Nf1 h4+ 49.Kh3 Kg6 50.Ne3 Nc7 51.Ne1 Ne6 52.Nxd5 Bd8 53.Nf3 Kh5 54.Ba1 1-0
2020.08.04 Titled Tue 4th Aug 10am
1905947 WCM Zavivaeva, Evelina (1619) FM Elgersma, Onno (2298) 0-1
1.e4 c6 2.d4 d5 3.exd5 cxd5 4.Bd3 Nc6 5.c3 Qc7 6.Nf3 Bg4 7.h3 Bh5 8.Bf4 Qxf4 9.Qd2 Qxd2+ 10.Nbxd2 e6 11.O-O-O Nf6 0-1
2020.08.04 Titled Tue 4th Aug 2pm
1908846 FM Elgersma, Onno (2298) GM Boruchovsky, A (2541) 0-1
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.d3 b5 6.Bb3 Be7 7.O-O Bb7 8.Nc3 O-O 9.Nd5 Na5 10.Nxe7+ Qxe7 11.Bg5 Nxb3 12.axb3 h6 13.Bxf6 Qxf6 14.b4 d5 15.exd5 Bxd5 16.Nd2 Qg6 17.f3 f5 18.Qe2 Rae8 19.c4 Bb7 20.Kh1 Qd6 21.cxb5 axb5 22.Ra7 Bd5 23.Qe3 e4 24.fxe4 fxe4 25.Rxf8+ Rxf8 26.dxe4 Bxe4 27.Ra1 Bd5 28.Qc3 Rf2 29.Rg1 Qf4 30.Nb3 Rxg2 0-1
2020.08.04 Titled Tue 4th Aug 2pm
1909117 GM Rustemov, A (2525) FM Elgersma, Onno (2298) 1/2-1/2
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.cxd5 exd5 5.Bg5 c6 6.e3 Bd6 7.Bd3 O-O 8.Qc2 h6 9.Bh4 Re8 10.Nge2 a5 11.h3 Na6 12.a3 Nc7 13.Bg3 Ne6 14.Bxd6 Qxd6 15.O-O Ng5 16.Nf4 Bd7 17.Na4 Nge4 18.Nc5 Rab8 19.b4 g5 20.Ne2 axb4 21.axb4 Nxc5 22.bxc5 Qc7 23.Ra7 Rbd8 24.Ng3 Ra8 25.Rfa1 Rxa7 26.Rxa7 h5 27.Qb3 Rb8 28.Nf5 Bxf5 29.Bxf5 h4 30.Qa3 Kg7 31.Ra8 Rxa8 32.Qxa8 b6 33.cxb6 Qxb6 34.Qa1 c5 35.dxc5 Qxc5 36.Qe5 Qc1+ 37.Kh2 Qe1 38.f3 Kf8 39.Bc8 Nh5 40.Qh8+ Ke7 41.Qe5+ Kd8 42.Qxg5+ Kxc8 43.Qg8+ Kc7 44.Qxf7+ Kc6 45.Qg6+ Kc5 46.Qc2+ Kd6 47.Qg6+ Kc5 48.Qxh5 Qg3+ 49.Kg1 Qe1+ 50.Kh2 Qg3+ 51.Kg1 Qe1+ 52.Kh2 1/2-1/2
2020.08.04 Titled Tue 4th Aug 2pm
1908631 FM Elgersma, Onno (2298) GM Chigaev, M (2588) 0-1
1.e4 c5 2.Nf3 d6 3.Bb5+ Nd7 4.d4 cxd4 5.Qxd4 a6 6.Bxd7+ Bxd7 7.Nc3 Nf6 8.O-O e6 9.Rd1 Bc6 10.a4 Be7 11.Bg5 O-O 12.a5 Rc8 13.Nd2 d5 14.e5 Nd7 15.Bxe7 Qxe7 16.f4 f6 17.Nf3 fxe5 18.Nxe5 Nxe5 19.Qxe5 Rf5 20.Qd4 Rcf8 21.Rf1 Qc7 22.g3 h5 23.Qe3 d4 24.Qxd4 h4 25.Ne4 hxg3 26.hxg3 Rxa5 27.Rxa5 Qxa5 28.Ng5 Qf5 29.c4 Qg4 30.Qe3 Re8 31.Qf2 e5 32.Qh2 Qf5 33.Qf2 exf4 34.Qxf4 Qc5+ 35.Rf2 Re1+ 36.Kh2 Rh1# 0-1
2020.08.04 Titled Tue 4th Aug 10am
1906856 FM Elgersma, Onno (2298) FM Makhnev, V (2173) 1-0
1.e4 g6 2.d4 Bg7 3.Nf3 d6 4.Bc4 Nf6 5.Qe2 O-O 6.O-O c6 7.e5 dxe5 8.dxe5 Nd5 9.Nbd2 h6 10.h3 Be6 11.Ne4 Nd7 12.Ng3 a5 13.a4 Rb8 14.Bd2 Qc7 15.Rfe1 Kh7 16.c3 b5 17.axb5 cxb5 18.Bxb5 Nxe5 19.Nxe5 Bxe5 20.Qxe5 Qxe5 21.Rxe5 Rxb5 22.c4 Rxb2 23.cxd5 Bc8 24.Bxa5 e6 25.d6 Bd7 26.Bc7 Rd2 27.Ne4 Rd4 28.Nf6+ 1-0
2020.08.04 Titled Tue 4th Aug 10am
1908401 IM Nitin, S (2381) FM Elgersma, Onno (2298) 1-0
1.e4 c6 2.Nc3 d5 3.Nf3 dxe4 4.Nxe4 Nf6 5.Qe2 Bg4 6.Nxf6+ gxf6 7.g3 Nd7 8.d4 e6 9.Bg2 Bd6 10.O-O Qc7 11.c4 h5 12.c5 Be7 13.Bf4 Qa5 14.a3 Qa4 15.b4 h4 16.h3 Bxf3 17.Qxf3 a6 18.Rfe1 O-O-O 19.Rac1 Nf8 20.Bd6 Bxd6 21.cxd6 Rxd6 22.Qxf6 Rh7 23.d5 Nd7 24.Qe7 Rxd5 25.Bxd5 exd5 26.Qe8+ Kc7 27.Re7 c5 28.Rxd7+ Qxd7 29.Rxc5+ Qc6 30.Rxc6+ bxc6 31.Qe5+ Kb7 32.Qf5 Rh8 33.Qxf7+ Kb6 34.Qf6 Rc8 35.Qd4+ Kb7 36.Qxh4 Rc7 37.Qd4 Re7 38.a4 Re4 39.Qxe4 dxe4 40.a5 c5 41.bxc5 Kc6 42.h4 Kxc5 43.h5 Kb5 44.h6 Kxa5 45.h7 1-0
2020.08.04 Titled Tue 4th Aug 10am
1906357 FM Elgersma, Onno (2298) GM Iniyan, P (2506) 0-1
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.d3 b5 6.Bb3 Be7 7.O-O O-O 8.Nc3 d6 9.a3 Be6 10.Nd5 Bxd5 11.exd5 Nd4 12.Nxd4 exd4 13.f4 Qd7 14.Qf3 Rfe8 15.Bd2 Qf5 16.Rae1 Bf8 17.h3 h5 18.Ba5 Rxe1 19.Rxe1 Rc8 20.Kh2 g6 21.Bd2 Bh6 22.g3 Kf8 23.Rf1 Re8 24.a4 bxa4 25.Bxa4 Rb8 26.Bb3 Rb5 27.Ra1 Nxd5 28.Rxa6 h4 29.Ra8+ Kg7 30.g4 Bxf4+ 31.Kg2 Qf6 32.Bxd5 Bxd2 33.Qxf6+ Kxf6 34.Bb3 Bc1 35.Rf8 d5 36.Rd8 Ke6 37.Rc8 Bf4 38.Re8+ Kf6 39.Rh8 Kg5 40.Rf8 f6 41.Rd8 Bd6 0-1
2020.08.04 Titled Tue 4th Aug 10am
1907128 FM Elgersma, Onno (2298) CM Todev, Simeon (1971) 1-0
1.e4 c5 2.Nf3 a6 3.c3 d5 4.exd5 Qxd5 5.d4 cxd4 6.cxd4 Nc6 7.Nc3 Qh5 8.Be2 Bg4 9.Qb3 b5 10.d5 Ne5 11.Nxe5 Qxe5 12.Be3 Bxe2 13.Nxe2 Nf6 14.Rd1 g6 15.d6 exd6 16.Bd4 Qf5 17.O-O Be7 18.Ng3 Qe6 19.Qf3 O-O 20.Rfe1 Qd5 21.Rxe7 Qxf3 22.gxf3 Nh5 23.Nxh5 gxh5 24.Kh1 1-0
2020.08.04 Titled Tue 4th Aug 10am
1907417 GM Mons, L (2540) FM Elgersma, Onno (2298) 1-0
1.Nf3 d5 2.e3 Nf6 3.c4 e6 4.b3 c5 5.Bb2 Nc6 6.cxd5 exd5 7.Bb5 Bd6 8.O-O O-O 9.d4 cxd4 10.Nxd4 Bd7 11.Nc3 Bxh2+ 12.Kxh2 Ng4+ 13.Kg1 Qh4 14.Nf3 Qh5 15.Bxc6 Bxc6 16.Qd4 f6 17.Ne2 Rfe8 18.Ng3 Qg6 19.Qf4 Bd7 20.Rad1 Be6 21.Nd4 Bd7 22.Ndf5 Bc6 23.Nh4 Qg5 24.Qxg5 1-0
2020.08.04 Titled Tue 4th Aug 10am
1907951 FM Elgersma, Onno (2298) GM Jaracz, P (2456) 0-1
1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.e5 Ne7 5.a3 Bxc3+ 6.bxc3 Nf5 7.a4 b6 8.a5 Ba6 9.Ne2 Nc6 10.axb6 axb6 11.Rxa6 Rxa6 12.Ng3 Ra1 13.Bb5 Qd7 14.Nh5 O-O 15.O-O Rb1 16.Bd3 Kh8 17.Qg4 Nce7 18.Ba3 Rxf1+ 19.Kxf1 Rg8 20.Qg5 h6 21.Qh4 Ng6 22.Qg4 c5 23.Ng3 Nfh4 24.Bc1 c4 25.Qh5 Kh7 26.Qxh4 cxd3 27.Qg4 Qb5 28.Nh5 d2+ 0-1
2020.08.04 Titled Tue 4th Aug 2pm
1909238 FM Elgersma, Onno (2298) Tomiello, Mateus Costamilan (1969) 0-1
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.d3 Bc5 6.O-O d6 7.a3 h6 8.Nc3 O-O 9.Be3 Nd4 10.Bxd4 exd4 11.Ne2 Bg4 12.Ng3 d5 13.h3 Bxf3 14.Qxf3 dxe4 15.Nxe4 Nxe4 16.Qxe4 Bd6 17.Bb3 Rb8 18.Rfe1 c5 19.a4 b5 20.axb5 axb5 21.Ra7 Qb6 22.Rd7 Rbd8 23.Rxd8 Qxd8 24.Qf5 Qc7 25.Bd5 Bh2+ 26.Kh1 Qf4 27.Qxf4 Bxf4 28.Re7 Bc1 29.b3 Ba3 30.Rb7 Bb4 31.Rxb5 Rd8 32.Be4 Re8 33.Rb7 g6 34.g3 Kg7 35.Kg2 Kf6 36.Bd5 Re7 37.Rb6+ Ke5 38.Be4 Re6 39.Rb7 Kf6 40.Bd5 Re7 41.Rb6+ Ke5 42.Bc4 Kf5 43.Rd6 Ke5 44.Rd5+ Kf6 45.Rd8 Kg7 46.h4 h5 47.Kf3 Kf6 48.Rd6+ Kg7 49.g4 hxg4+ 50.Kxg4 Ra7 51.f4 Re7 52.f5 gxf5+ 53.Kxf5 Re1 54.Rd7 Rf1+ 55.Ke4 Be1 56.h5 Bh4 57.h6+ Kxh6 58.Bxf7 Be1 59.Bc4 Bb4 60.Kd5 Re1 61.Kc6 Kg5 62.Rg7+ Kf6 63.Rf7+ Kg5 64.Rf2 Re5 65.Bd5 Rf5 66.Rg2+ Kf6 67.Be4 Re5 68.Rf2+ Ke7 69.Bd5 Kd8 70.Rf7 Rg5 71.Be6 Rg6 72.Kd5 Rg5+ 73.Kd6 c4+ 74.Kc6 cxd3 75.cxd3 Rc5+ 76.Kb6 Rc3 77.Bc4 Rc1 78.Kb5 Bc3 79.b4 Rb1 80.Kc6 Rxb4 81.Be6 Ke8 82.Rh7 Ra4 83.Kd6 Ra6+ 84.Ke5 Kf8 85.Kf6 Rxe6+ 86.Kxe6 Kg8 87.Rd7 Kf8 88.Kd5 Ke8 89.Ke4 Kxd7 90.Kd5 Kc7 91.Kc4 Kd7 92.Kd5 Ke7 93.Ke5 Ba1 94.Kd5 Kf6 95.Ke4 Ke6 96.Kf4 Kd5 97.Kf3 Kc5 98.Ke2 Kb4 99.Kd2 Bc3+ 100.Kc2 Ka3 101.Kc1 Kb3 102.Kd1 Kb2 103.Ke2 Kc2 104.Kf3 Kxd3 0-1
2020.07.14 Titled Tuesday 14th July
1921031 WIM Petrova, I (2087) FM Elgersma, Onno (2298) 0-1
1.d4 d5 2.Nc3 c6 3.e4 dxe4 4.Nxe4 Nf6 5.Nxf6+ exf6 6.c3 Bd6 7.Bd3 O-O 8.Ne2 Re8 9.Be3 Nd7 10.Qc2 Nf8 11.O-O Be6 12.Ng3 Bxg3 13.hxg3 a5 14.Rfe1 Qd7 15.Rad1 a4 16.c4 b5 17.cxb5 cxb5 18.Qe2 Bg4 19.f3 Bf5 20.Bxb5 Rxe3 21.Bxd7 Rxe2 22.Bxf5 Rxb2 23.d5 g6 24.Bb1 Rd8 25.Re4 Rdb8 26.Ree1 Rd8 27.Re4 a3 28.d6 Rb6 29.Red4 Ne6 30.R4d3 Rdb8 31.Bc2 Nc5 32.R3d2 Rb2 33.Be4 Rxd2 34.Rxd2 Rd8 35.Kf2 f5 36.Bc6 Kg7 37.Rd5 Ne6 38.d7 Kf6 39.Ra5 Nd4 40.Ba4 Ne6 41.Ke3 Ke7 42.Bc6 Rb8 43.Rxa3 Nd8 44.Ba4 Ra8 45.Ke2 Nb7 46.Re3+ Kf6 47.Re8 Rxa4 48.d8=Q+ Nxd8 49.Rxd8 Rxa2+ 50.Kf1 h5 51.Rd6+ Kg7 52.f4 Ra3 53.Kf2 Ra2+ 54.Kg1 Kg8 55.Kh2 Kf8 56.Kh3 Ke7 57.Rb6 f6 58.Rb7+ Kf8 59.Rc7 Ra6 60.Kh2 Re6 61.Rb7 Re7 62.Rb8+ Kg7 63.Rb6 Rf7 64.Rc6 g5 65.Rc5 Kg6 66.Rb5 gxf4 67.gxf4 Re7 68.g3 Re3 69.Kh3 Re1 70.Rb8 Rh1+ 71.Kg2 Ra1 72.Rg8+ Kf7 73.Rh8 Kg6 74.Rg8+ Kh7 75.Rf8 Kg7 76.Rc8 Ra4 77.Rc7+ Kg6 78.Kh3 Ra1 79.Rc8 Rf1 80.Kg2 Re1 81.Kh3 Re4 82.Rg8+ Kf7 83.Rh8 Kg6 84.Rg8+ Kh7 85.Rf8 Kg7 86.Rc8 Re1 87.Rc7+ Kg6 88.Rc8 h4 89.gxh4 Re3+ 90.Kg2 Kh5 91.Rh8+ Kg4 92.h5 Re2+ 93.Kf1 Rh2 94.h6 Kxf4 95.h7 Kf3 96.Kg1 Rh6 0-1
2020.07.14 33rd Leon Blitz Open 2020
1918769 FM Elgersma, Onno (2298) IM Leiva, G (2391) 1-0
1.e4 c5 2.Nf3 d6 3.Bb5+ Nd7 4.d4 Nf6 5.Nc3 cxd4 6.Qxd4 e5 7.Qd3 h6 8.a4 Be7 9.Nd2 O-O 10.Bxd7 Bxd7 11.Nc4 Be6 12.Ne3 Rc8 13.O-O Qd7 14.a5 Rc6 15.Ncd5 Bxd5 16.exd5 Rc7 17.c4 Rfc8 18.Bd2 e4 19.Qe2 Nh7 20.b3 f5 21.Nc2 Bf6 22.Rad1 g5 23.Be3 Re8 24.Bxa7 f4 25.Qh5 Kg7 26.Bd4 Rcc8 27.Rfe1 Bxd4 28.Nxd4 Nf6 29.Qe2 f3 30.gxf3 Qh3 31.fxe4 Ng4 32.f3 Ne5 33.Qg2 Qh5 34.Nf5+ Kh7 35.Nxd6 Nxf3+ 36.Kh1 Nxe1 37.Rxe1 Qh4 38.Rf1 Rf8 39.Nxc8 Rxf1+ 40.Qxf1 Qxe4+ 41.Kg1 Qg4+ 42.Kf2 Qxc8 43.Qd3+ Kg7 44.d6 Qc5+ 45.Ke2 Qe5+ 46.Kd1 Qa1+ 47.Kc2 Qa2+ 48.Kc3 Qxa5+ 49.Kd4 b6 50.d7 Qc5+ 51.Ke4 Qe7+ 52.Kf3 Qf8+ 53.Kg2 Qd8 54.Qd6 Kf7 55.Kg3 h5 56.h3 g4 57.hxg4 hxg4 58.Kxg4 Qg8+ 59.Kf4 Qd8 60.Kf5 Kg8 61.Qg6+ Kf8 62.Qf6+ Qxf6+ 63.Kxf6 Kg8 64.d8=Q+ Kh7 65.Qe7+ Kh6 66.Qg7+ Kh5 67.Qg5# 1-0
2020.07.14 Titled Tuesday 14th July
1921337 FM Elgersma, Onno (2298) FM Koellner, Ruben Gideon (2376) 1-0
1.e4 d6 2.d4 Nf6 3.Nc3 e5 4.Nf3 Nbd7 5.Bc4 Be7 6.O-O c6 7.a4 O-O 8.Re1 b6 9.h3 a6 10.d5 cxd5 11.Nxd5 Nxd5 12.Bxd5 Rb8 13.c3 Nf6 14.Ba2 Bb7 15.Nd2 Qc7 16.Qe2 Rfe8 17.Bb1 Bf8 18.Nf1 d5 19.exd5 Bxd5 20.Bg5 Nd7 21.Qd3 g6 22.Qxd5 Bg7 23.Ng3 Nc5 24.Ne4 Nxe4 25.Bxe4 b5 26.Qc6 Qxc6 27.Bxc6 Rec8 28.axb5 axb5 29.Bd5 Rc7 30.Rec1 h6 31.Be3 Rd8 32.Rd1 Rb8 33.Rac1 b4 34.cxb4 Rxc1 35.Rxc1 Rxb4 36.b3 Rb8 37.Rc7 Rf8 1-0
2020.07.14 33rd Leon Blitz Open 2020
1918528 FM Elgersma, Onno (2298) WIM Divya, Deshmukh (2305) 1/2-1/2
1.e4 c5 2.Nf3 d6 3.Bb5+ Nd7 4.d4 cxd4 5.Qxd4 a6 6.Bxd7+ Bxd7 7.Nc3 e5 8.Qd3 h6 9.Nd2 b5 10.a4 b4 11.Nd5 a5 12.Nc4 Nf6 13.Nxf6+ Qxf6 14.Nb6 Rb8 15.Nxd7 Kxd7 16.O-O Be7 17.c3 Rhc8 18.cxb4 axb4 19.Be3 Qe6 20.Rfc1 Ke8 21.a5 Bg5 22.Bxg5 hxg5 23.Rxc8+ Rxc8 24.Qb5+ Qd7 25.Qxb4 Qc6 26.h3 Kd7 27.a6 Ra8 28.a7 Qc7 29.Qb5+ Ke7 30.b4 Rxa7 31.Rxa7 Qxa7 32.Qc6 Qa1+ 33.Kh2 Qd4 34.Qc7+ Kf6 35.b5 Kg6 36.b6 Qxf2 37.Qxd6+ Kh7 38.b7 Qf4+ 39.Kg1 Qe3+ 40.Kf1 Qf4+ 41.Kg1 Qe3+ 42.Kh2 Qf4+ 43.Kh1 Qc1+ 44.Kh2 Qf4+ 1/2-1/2
2020.07.14 Titled Tuesday 14th July
1920077 FM Elgersma, Onno (2298) GM Eljanov, P (2672) 0-1
1.e4 c6 2.Nf3 d5 3.Nc3 Bg4 4.h3 Bxf3 5.Qxf3 e6 6.Be2 Nf6 7.O-O Bc5 8.d3 Nbd7 9.Qg3 O-O 10.Bh6 Ne8 11.Bf4 Bd4 12.Be3 Bxe3 13.fxe3 Qb8 14.Qh4 Nef6 15.Bf3 a5 16.Rae1 b5 17.exd5 cxd5 18.e4 b4 19.Ne2 dxe4 20.Bxe4 Qb6+ 21.Kh1 Rac8 22.Rc1 Qe3 23.Qf2 Qxf2 24.Rxf2 Nxe4 25.dxe4 Ne5 26.Rff1 Nc4 27.c3 Nxb2 28.cxb4 axb4 29.Rb1 Nd3 30.Rb3 Rfd8 31.Nf4 Nxf4 32.Rxf4 Rd4 33.Kh2 e5 0-1
2020.07.14 33rd Leon Blitz Open 2020
1918289 IM Skliarov, V (2376) FM Elgersma, Onno (2298) 1-0
1.e4 c6 2.d4 d5 3.exd5 cxd5 4.Bd3 Nc6 5.c3 Qc7 6.Ne2 Bg4 7.O-O e6 8.Qe1 Bh5 9.f4 O-O-O 10.Qh4 Bg6 11.Bxg6 fxg6 12.Nd2 Nh6 13.Nf3 Nf5 14.Qh3 Be7 15.Bd2 h6 16.Rae1 h5 17.Nc1 Qd7 18.Nd3 Bf6 19.Nc5 Qf7 20.Nxe6 Rde8 21.Nfg5 Bxg5 22.Nxg5 Qd7 23.Qd3 a6 24.Nf3 Rxe1 25.Rxe1 Re8 26.Ne5 Nxe5 27.fxe5 Qb5 28.Qc2 Re6 29.Bg5 Qc6 30.Qe2 Kb8 31.g3 Ka8 32.Kg2 Qb6 33.h3 Qa5 34.g4 hxg4 35.hxg4 Nh6 36.a3 Qa4 37.Rf1 Qb3 38.Rf8+ Ka7 39.Bd8 Qa2 40.Ba5 Qb1 41.Bb4 b6 42.Bd6 a5 43.Ra8+ Kb7 44.Qa6+ Kc6 45.Rc8+ Kd7 46.Qb7# 1-0
2020.07.14 Titled Tuesday 14th July
1922132 IM Abarca Gonzalez, N (2412) FM Elgersma, Onno (2298) 0-1
1.e4 c6 2.d4 d5 3.exd5 cxd5 4.c4 Nf6 5.Nc3 g6 6.Nf3 Bg7 7.cxd5 O-O 8.Bc4 Nbd7 9.O-O Nb6 10.Bb3 Nbxd5 11.Bg5 Nxc3 12.bxc3 Ne4 13.Bd2 Bg4 14.Be1 Rc8 15.h3 Bf5 16.c4 Qc7 17.Bb4 Rfd8 18.Qe2 a5 19.Ba3 a4 20.Bxa4 Ra8 21.Bxe7 Qxe7 22.Bc2 Bxd4 23.Rae1 Bc3 24.Bxe4 Bxe1 25.Rxe1 Bxe4 26.Qxe4 Qxe4 27.Rxe4 Rxa2 28.Re7 Rc2 29.Rxb7 Rxc4 30.Ne5 Rf4 31.g3 Rf5 32.Nc6 Rd1+ 33.Kg2 Kg7 34.Rb2 Rc5 35.Nb8 Rdc1 36.Nd7 R1c2 37.Rxc2 Rxc2 38.Ne5 Rc7 39.Ng4 f6 40.Ne3 Rd7 41.h4 h5 42.Nc4 Kf7 43.Ne3 Ke6 44.Kf3 Ra7 45.Kg2 Ke5 46.Nc4+ Kd4 47.Nd6 Kd3 48.Ne8 Ra6 49.Nc7 Rc6 50.Nd5 Ke4 51.Nf4 Kf5 52.Ne2 Rd6 53.Nf4 g5 54.Nxh5 Kg6 55.g4 gxh4 56.f4 Rd3 57.Kh2 f5 58.gxf5+ Kxh5 59.f6 Kg4 60.f7 Rd8 61.f5 Rf8 62.f6 Rxf7 63.Kg2 Rxf6 64.Kh2 h3 65.Kg1 Ra6 66.Kf2 Ra2+ 67.Ke3 0-1
2020.07.14 Titled Tuesday 14th July
1920350 CM Christensen, Thom2 (2143) FM Elgersma, Onno (2298) 0-1
1.d4 d5 2.e4 c6 3.Nc3 dxe4 4.f3 exf3 5.Nxf3 Nf6 6.Bc4 g6 7.Ne5 Nd5 8.Qf3 f6 9.O-O Be6 10.Ne4 fxe5 11.Ng5 Qd7 12.dxe5 Bg7 13.Qg3 Na6 14.Bxa6 bxa6 15.c4 Nb6 16.b3 O-O-O 17.Be3 Rhf8 18.Ne4 Rxf1+ 19.Rxf1 Rf8 20.Rxf8+ Bxf8 21.Qf3 Bf5 22.Nc5 Qc7 23.g4 Qxe5 24.gxf5 Qxf5 25.Qxf5+ gxf5 26.Ne6 Nd7 27.Bxa7 Bh6 28.Kf2 Ne5 29.h3 Nd3+ 30.Kf3 Kd7 31.Nc5+ Nxc5 32.Bxc5 e5 33.Bf2 e4+ 34.Ke2 Ke6 35.Bh4 f4 36.Bd8 f3+ 37.Kf2 Kf5 38.Bc7 Bg7 0-1
2020.07.14 33rd Leon Blitz Open 2020
1918815 Budrewicz, K (2227) FM Elgersma, Onno (2298) 0-1
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 a6 5.Bg5 dxc4 6.e4 b5 7.e5 h6 8.Bh4 g5 9.exf6 gxh4 10.Ne5 Bb7 11.Nxf7 Qxf6 12.Nxh8 Qxh8 13.Qh5+ Kd8 14.Qxh4+ Be7 15.Qg4 Nc6 16.Rd1 Nb4 17.Be2 Nc2+ 18.Kf1 Qf6 19.Bf3 Bxf3 20.Qxf3 Qxf3 21.gxf3 Kd7 22.Rg1 Rf8 23.Ke2 Kc6 24.Rg6 Bd6 25.Rxe6 Rf4 26.Ne4 Kd5 27.Rxh6 Nxd4+ 28.Ke3 Rxf3+ 29.Kd2 Bf4+ 30.Ke1 Bxh6 31.Nc3+ Ke5 32.Kf1 Rd3 33.Re1+ Kd6 34.Kg2 Bd2 35.Ne4+ Kc6 36.Nxd2 Rxd2 37.Re4 Kc5 38.h4 b4 39.h5 c3 40.bxc3 bxc3 41.Re3 c2 42.Rc3+ Kb4 43.Rxc7 Rd1 44.h6 c1=Q 45.Rxc1 Rxc1 46.h7 Rc8 0-1
2020.07.14 Titled Tuesday 14th July
1921126 GM Preotu, Razvan (2487) FM Elgersma, Onno (2298) 1-0
1.e4 c6 2.Nc3 d5 3.Nf3 dxe4 4.Nxe4 Nf6 5.Qe2 Nxe4 6.Qxe4 Nd7 7.Bc4 Nf6 8.Ne5 e6 9.Qe2 Qc7 10.O-O Bd6 11.Re1 O-O 12.b3 b5 13.Bd3 Bb7 14.Bb2 c5 15.Bxb5 Nd5 16.Qg4 f5 17.Qg3 Nf6 18.d3 Kh8 19.Bc4 Nd5 20.Re2 f4 21.Qh3 Rf5 22.Nf3 Qd7 23.Rae1 Re8 24.Qxf5 Ne3 25.Qh5 1-0
2020.07.14 Titled Tuesday 14th July
1921932 CM Xie, Bryan (2050) FM Elgersma, Onno (2298) 0-1
1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Nf6 5.Nxf6+ exf6 6.Nf3 Bd6 7.c3 O-O 8.Bd3 Bg4 9.O-O Re8 10.h3 Bh5 11.Be3 Nd7 12.Qc2 Bg6 13.Rae1 b5 14.Nh4 Nb6 15.Nf5 Qc7 16.Nxd6 Qxd6 17.b3 Nd5 18.Bd2 Rad8 19.Bxg6 hxg6 20.Rxe8+ Rxe8 21.Re1 Rxe1+ 22.Bxe1 Qe6 23.Kf1 Nb6 24.Qe2 Kf8 25.Qxe6 fxe6 26.Ke2 a5 27.Kd3 a4 28.Bd2 Ke8 29.Bf4 Kd7 30.h4 Nd5 31.Bb8 axb3 32.axb3 Ne7 33.g4 Nd5 34.c4 Nb4+ 35.Kc3 Na2+ 36.Kb2 Nb4 37.Kc3 Na6 38.Bf4 bxc4 39.bxc4 c5 40.d5 e5 41.Be3 Kd6 42.Kb3 Nb4 43.Ka4 Nc2 44.Bc1 Nd4 45.Ba3 f5 46.gxf5 gxf5 47.Ka5 Nc2 48.Bc1 g6 49.Kb6 f4 50.Bd2 Nd4 51.Bc1 Nc2 52.Ka5 Nb4 53.Kb5 Nd3 54.Bd2 Nxf2 55.Ba5 Nd3 56.Bb6 f3 57.Ba7 f2 58.Bb8+ Kd7 59.Bxe5 Nxe5 60.Kxc5 f1=Q 61.Kd4 Nf3+ 62.Kc5 Qf2+ 63.Kb5 Kd6 64.c5+ Qxc5+ 65.Ka4 Qb6 66.Ka3 Nd4 67.Ka2 Qb3+ 68.Ka1 Nc2# 0-1
2020.07.14 33rd Leon Blitz Open 2020
1917838 GM Asadli, Vugar (2572) FM Elgersma, Onno (2298) 1-0
1.e4 c6 2.Nf3 d5 3.exd5 cxd5 4.c4 Nf6 5.cxd5 g6 6.Nc3 Bg7 7.Bc4 O-O 8.O-O Nbd7 9.d3 Nb6 10.Qb3 Bf5 11.Re1 Rc8 12.Be3 Nfd7 13.a4 Nc5 14.Bxc5 Rxc5 15.a5 Nd7 16.Qxb7 Rxa5 17.Nh4 Nc5 18.Qb4 Rxa1 19.Rxa1 Nxd3 20.Qb5 Ne5 21.Nxf5 gxf5 22.Rxa7 Qb8 23.Rb7 Qd6 24.g3 Ng4 25.Be2 Nf6 26.Bf3 Qe5 27.Kg2 Ne4 28.Bxe4 fxe4 29.Qb4 e3 30.Rxe7 Qd4 31.Qxd4 Bxd4 32.fxe3 Bf6 33.Rb7 Rc8 34.Ne4 Bg7 35.Ng5 Rc2+ 36.Kf3 Rxb2 37.Rxb2 Bxb2 38.Ke4 Kf8 39.Kf5 h6 40.Nf3 Ke7 41.e4 Kd6 42.g4 Bg7 43.g5 hxg5 44.Nxg5 Ke7 45.h4 Bh6 46.h5 Bg7 47.Nf3 Kd6 48.Nh2 Ke7 49.Ng4 Bh8 50.e5 Kd7 51.Nf6+ Ke7 52.h6 Kf8 53.d6 Bxf6 54.Kxf6 Kg8 55.d7 Kh7 56.d8=Q 1-0
2020.07.14 33rd Leon Blitz Open 2020
1918620 GM Thipsay, P (2376) FM Elgersma, Onno (2298) 1/2-1/2
1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Nf6 5.Nxf6+ exf6 6.Nf3 Bd6 7.Be2 O-O 8.O-O Bg4 9.h3 Bh5 10.Nh4 Bg6 11.Nxg6 hxg6 12.Bc4 Nd7 13.Qg4 Kh7 14.c3 f5 15.Qf3 Nf6 16.Bg5 Qc7 17.Bxf6 gxf6 18.h4 Kg7 19.Rfe1 Rae8 20.h5 a5 21.hxg6 fxg6 22.Re2 Rxe2 23.Qxe2 Bh2+ 24.Kf1 Bd6 25.Re1 Rh8 26.g3 Rh1+ 27.Kg2 Rxe1 28.Qxe1 Qe7 29.Qxe7+ Bxe7 30.f4 Bd6 31.Be6 Bc7 32.Kf3 g5 33.Bxf5 gxf4 34.gxf4 Kf7 35.Bc8 b6 36.Bb7 c5 37.dxc5 bxc5 38.Ke4 Ke6 39.f5+ Kd6 40.a4 Bb6 41.Bd5 Bd8 42.Bf7 Be7 43.Kd3 Bf8 44.Kc4 Kc6 45.Be8+ Kb6 46.Kd5 Bh6 47.Ke6 Bg5 48.Bb5 Bh4 49.Kf7 Bg5 50.Ke6 Bh4 51.Kd5 Bg5 52.Kc4 Bc1 53.b4 cxb4 54.cxb4 axb4 55.Kxb4 Bd2+ 56.Kc4 Ka5 57.Kd5 Bc3 58.Ke6 Ba1 59.Kf7 1/2-1/2
2020.07.14 Titled Tuesday 14th July
1921699 FM Elgersma, Onno (2298) GM Klekowski, M (2506) 0-1
1.e4 c6 2.d4 d5 3.e5 Bf5 4.Nf3 e6 5.Be2 h6 6.O-O Ne7 7.Nbd2 Nd7 8.Nb3 Nc8 9.a4 Be7 10.a5 a6 11.Bd2 Na7 12.Ne1 c5 13.dxc5 Nxe5 14.Nf3 Nxf3+ 15.Bxf3 Bg6 16.Bc3 O-O 17.Re1 Rc8 18.Bd4 Nc6 19.c3 Re8 20.Qd2 Qc7 21.Be3 Ne5 22.Be2 Nc4 23.Bxc4 dxc4 24.Bf4 Qc6 25.Nd4 Qxc5 26.Re5 Qa7 27.Rae1 Bf6 28.R5e2 Rc5 29.Be5 Bxe5 30.Rxe5 Rxe5 31.Rxe5 Qb8 32.Qe3 Rd8 33.f4 Qc7 34.g4 Bd3 35.f5 exf5 36.gxf5 Kh7 37.Re7 Rd7 38.Re8 Qxa5 39.Kg2 Bxf5 40.Re5 Rd5 41.Re8 Bg6 42.Qe7 Rg5+ 43.Kf2 Qc5 44.Qd8 Bd3 45.Rh8+ Kg6 46.Qe8 Rf5+ 47.Kg1 Rf1+ 48.Kg2 Qg5+ 49.Kh3 Rf3+ 50.Nxf3 Bf5# 0-1
2020.07.14 Titled Tuesday 14th July
1922238 FM Elgersma, Onno (2298) FM Turgut, Aydin (2269) 0-1
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.d3 d6 7.a3 b5 8.Bb3 Bb7 9.Nc3 O-O 10.Nd5 Na5 11.Nxf6+ Bxf6 12.Ba2 d5 13.Qe2 c5 14.b4 dxe4 15.dxe4 cxb4 16.axb4 Nc6 17.c3 Qc7 18.Be3 Nd8 19.Bc5 Re8 20.Rfd1 Ne6 21.Bd6 Qxc3 22.Rac1 Nf4 23.Qf1 Qa3 24.Bxf7+ Kxf7 25.Rc7+ Kg8 26.Rxb7 Rac8 27.Bc5 Red8 28.Rbd7 Rxd7 29.Rxd7 a5 30.Be7 Bxe7 31.Rxe7 Rc1 32.Ne1 Qxb4 33.Re8+ Kf7 34.Rxe5 Ne2+ 35.Qxe2 Qxe1+ 36.Qf1 Qxf1# 0-1
2020.07.14 33rd Leon Blitz Open 2020
1918406 Rosenberg, E (2125) FM Elgersma, Onno (2298) 0-1
1.Nf3 Nf6 2.c4 e6 3.Nc3 d5 4.d4 a6 5.Bg5 dxc4 6.e4 b5 7.e5 h6 8.Bh4 g5 9.exf6 gxh4 10.a4 b4 11.Ne4 Bb7 12.Nc5 Bxc5 13.dxc5 Qxf6 14.Bxc4 h3 15.O-O hxg2 16.Re1 Bxf3 17.Qb3 Nc6 18.Bxe6 O-O 19.Bd5 Nd4 20.Qc4 Rae8 21.Rxe8 Rxe8 22.Bxf7+ Qxf7 23.Qxd4 Qe7 24.Qxb4 Qe4 25.Qb3+ Qd5 26.Qxd5+ Bxd5 27.h4 Re2 28.b4 Rb2 29.b5 axb5 30.axb5 Rxb5 31.c6 Bxc6 32.Rc1 Bf3 33.Kh2 Rd5 34.Kg3 Rd1 35.Rxd1 Bxd1 36.Kxg2 c5 37.f4 c4 38.Kf2 c3 39.Ke1 c2 40.Kd2 Kf7 41.h5 Kf6 42.Kc1 Kf5 43.Kd2 Kxf4 44.Kc1 Ke3 45.Kb2 Kd2 46.Ka2 Be2 47.Kb2 c1=Q+ 48.Kb3 Qc3+ 49.Ka2 Bc4+ 50.Kb1 Qc1# 0-1
2020.07.14 33rd Leon Blitz Open 2020
1918930 FM Elgersma, Onno (2298) GM Sengupta, D (2527) 1-0
1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.Nc3 Nd4 5.Bc4 Bc5 6.O-O O-O 7.Nxe5 d6 8.Nf3 Bg4 9.Be2 Nxe2+ 10.Qxe2 Re8 11.d3 d5 12.Bg5 dxe4 13.dxe4 h6 14.Rad1 Bd6 15.Bh4 g5 16.Bg3 Nh5 17.Bxd6 cxd6 18.Qd3 Qf6 19.Qxd6 Re6 20.Qd3 Nf4 21.Qe3 Rae8 22.Rde1 Qg6 23.Nd4 Re5 24.f3 Bd7 25.Qf2 f5 26.exf5 Bxf5 27.Rxe5 Rxe5 28.Re1 Rxe1+ 29.Qxe1 Qb6 30.Qe3 Bg6 31.b3 Qc5 32.Kf2 Bf7 33.Ne4 Qb6 34.Nf5 Qe6 35.g4 Bg6 36.Nxh6+ Kh7 37.Nxg5+ Kxh6 38.Nxe6 1-0
2020.07.14 33rd Leon Blitz Open 2020
1918196 FM Elgersma, Onno (2298) GM Henderson de La Fuente, Lance (2491) 0-1
1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.e5 c5 5.a3 Ba5 6.Qg4 Kf8 7.dxc5 Bxc3+ 8.bxc3 Nd7 9.Nf3 Qc7 10.Qg3 Nxc5 11.Nd4 Ne4 12.Qe3 Qxc3+ 13.Qxc3 Nxc3 14.Bd2 Na4 15.Bb4+ Ne7 16.Bb5 Nb6 17.O-O Bd7 18.a4 a6 19.Bxd7 Nxd7 20.f4 Rc8 21.a5 Ke8 22.f5 Nxf5 23.Nxf5 exf5 24.Rxf5 Rxc2 25.Raf1 f6 26.exf6 Nxf6 27.Re5+ Kf7 28.Be7 d4 29.Bxf6 gxf6 30.Rd5 Re8 31.Rd7+ Re7 32.Rxd4 Ree2 33.Rg4 Rc5 34.Rb1 Rxa5 35.Rxb7+ Ke6 36.Rb1 Rae5 37.Kf1 Ra2 38.Rh4 h5 39.h3 Rf5+ 40.Ke1 a5 41.Re4+ Kf7 42.Re2 Rxe2+ 43.Kxe2 Kg6 44.Ra1 h4 45.Ke3 Kg5 46.Ra4 Rb5 47.Kf3 Rb3+ 48.Kf2 Rb2+ 49.Kf3 Rb3+ 50.Kf2 Rb5 51.Kf3 f5 52.Ra2 Rb3+ 53.Kf2 Rb5 54.Ra4 Rc5 55.Kf3 f4 56.Ke4 Rb5 57.Kf3 Rb3+ 58.Kf2 Rb5 59.Kf3 Rc5 60.Ke4 Rf5 61.Kf3 Rb5 62.Kf2 Kf5 63.Kf3 Rb3+ 64.Kf2 Rb5 65.Kf3 Ke5 66.Re4+ Kd5 67.Rxf4 Rb3+ 68.Kg4 Rb4 69.g3 Rxf4+ 70.gxf4 a4 71.Kg5 a3 72.f5 a2 73.f6 a1=Q 0-1
2020.07.14 Titled Tuesday 14th July
1920501 FM Elgersma, Onno (2298) GM Bauer, Ch (2623) 0-1
1.e4 g6 2.d4 Bg7 3.Nf3 d6 4.Bc4 Nc6 5.h3 Nf6 6.Qe2 e5 7.dxe5 dxe5 8.O-O O-O 9.Rd1 Nd4 10.Nxd4 exd4 11.c3 Re8 12.Rxd4 Qe7 13.Bg5 h6 14.Bxf6 Bxf6 15.Rd1 Qxe4 16.Qxe4 Rxe4 17.Nd2 Re8 18.Re1 Bf5 19.g4 Bd7 20.Ne4 Be7 21.Rad1 Rad8 22.Bd5 Bc8 23.Kg2 Kg7 24.Ng3 Bd6 25.Ne4 Bf8 26.Ng3 Rxe1 0-1
2020.06.27 Apeldoorn Lichess Inv
1945351 GM Ernst, S (2540) FM Elgersma, Onno (2298) 1/2-1/2
1.d4 d5 2.c4 e6 3.Nf3 Nf6 4.g3 Be7 5.Bg2 O-O 6.O-O dxc4 7.Qc2 a6 8.Qxc4 b5 9.Qc2 Bb7 10.Bg5 Nbd7 11.Nbd2 c5 12.dxc5 Bxc5 13.Bxf6 Qxf6 14.Ng5 Qxg5 15.Bxb7 Ra7 16.Bg2 Bb6 17.a4 Rc7 18.Qd1 Nc5 19.axb5 axb5 20.Nf3 Qe7 21.Nd4 Rd8 22.e3 e5 23.Nf5 Qf6 24.Qf3 e4 25.Qf4 g5 26.Qg4 h5 27.Qh3 Qg6 28.b4 g4 29.Qh4 Re8 30.bxc5 Bxc5 31.Rfd1 Qxf5 32.Rd8 Rf8 33.Rxf8+ Bxf8 34.Qd8 Rd7 35.Qa8 Qe5 36.Rc1 Rc7 37.Rd1 Kg7 38.Bxe4 Be7 39.Kg2 h4 40.gxh4 Bd6 41.Qd5 Qxh2+ 42.Kf1 Be5 43.Qd8 Bf6 44.Qd5 Rc2 45.Rd2 Rxd2 46.Qxd2 Qxh4 47.Qd5 Qg5 48.Qxg5+ Bxg5 49.Bf5 g3 50.fxg3 Bxe3 51.Ke2 Bd4 52.g4 Be5 53.Kd3 b4 54.Kc2 Bd6 55.Kb3 Bf8 1/2-1/2
2020.06.27 Apeldoorn Lichess Inv
1945352 FM Elgersma, Onno (2298) GM Ernst, S (2540) 0-1
1.Nf3 d5 2.d4 c6 3.e3 Bg4 4.Nbd2 e6 5.Bd3 Nd7 6.O-O f5 7.h3 Bh5 8.c4 Bd6 9.cxd5 cxd5 10.Qa4 a6 11.Qb3 Ngf6 12.Qxb7 O-O 13.Qc6 Qe7 14.Qa4 Ne4 15.Ne5 Nxe5 16.dxe5 Bxe5 17.Nb3 Bd6 18.Nd4 e5 19.Nc6 Qd7 20.Bc2 Be8 21.Nb4 Qxa4 22.Bxa4 Bxb4 23.Bb3 Bf7 24.a3 Be7 25.Rd1 Rfd8 26.Bd2 Rab8 27.Bc2 Rxb2 28.Bxe4 fxe4 29.Bc3 Rb3 30.Bxe5 Rxa3 31.Rxa3 Bxa3 32.Ra1 Bd6 33.Bd4 Ra8 0-1
2020.06.27 Apeldoorn Lichess Inv
1945262 Doornekamp, Chris FM Elgersma, Onno (2298) 0-1
1.c4 Nf6 2.Nc3 e6 3.g3 d5 4.cxd5 exd5 5.d4 c6 6.Bg2 Be7 7.e3 O-O 8.Nge2 Na6 9.a3 Nc7 10.O-O Bf5 11.b4 Qd7 12.Re1 a5 13.Na4 Ra6 14.Nc5 Bxc5 15.bxc5 Ne6 16.Nc3 Ng5 17.f3 h6 18.e4 dxe4 19.Bxg5 hxg5 20.fxe4 Bg4 21.Qd2 Rd8 22.d5 cxd5 23.exd5 Bh3 24.Qxg5 Bxg2 25.Kxg2 Qc7 26.Rac1 Qxc5 27.Ne4 Qxd5 28.Qxd5 Nxd5 29.Red1 Re6 30.Kf3 Rxe4 31.Kxe4 Nc3+ 32.Ke3 Rxd1 33.Rxd1 Nxd1+ 34.Ke2 Nb2 35.Kd2 Nc4+ 36.Kc3 Nxa3 37.Kb3 Nb5 38.Ka4 Nc7 39.Kxa5 b5 40.Kb4 Kf8 41.h3 Ke7 42.Kc5 Kd7 43.Kb4 Kc6 44.h4 Nd5+ 0-1
2020.06.27 Apeldoorn Lichess Inv
1945263 FM Elgersma, Onno (2298) Doornekamp, Chris 1-0
1.e4 c5 2.Nf3 Nc6 3.Bb5 a6 4.Bxc6 bxc6 5.O-O e6 6.d3 d6 7.Nbd2 Nf6 8.Re1 Be7 9.Qe2 O-O 10.h3 e5 11.Nc4 Re8 12.a4 a5 13.Bd2 Be6 14.Ne3 Rb8 15.b3 Qc7 16.Ng5 Bc8 17.Nc4 h6 18.Nf3 Ra8 19.Ne3 Be6 20.g4 Qd7 21.Nf5 Kh7 22.Kh1 Rh8 23.Rg1 g5 24.Kg2 Bxf5 25.gxf5 Nh5 26.Kh2 Nf4 27.Bxf4 exf4 28.c3 Bf6 29.d4 cxd4 30.cxd4 c5 31.e5 dxe5 32.dxe5 Bd8 33.Qe4 Bc7 34.e6 fxe6 35.fxe6+ 1-0
2020.06.27 Apeldoorn Lichess Inv
1945319 Shakhverdian, William (2089) FM Elgersma, Onno (2298) 0-1
1.d4 d5 2.c4 e6 3.Nf3 Nf6 4.Nc3 a6 5.cxd5 exd5 6.Bg5 Be6 7.e3 Bd6 8.Bd3 O-O 9.O-O c6 10.Bf4 Qc7 11.Ne5 Nbd7 12.Nxd7 Qxd7 13.Re1 Rfe8 14.Qc2 h6 15.Na4 Rad8 16.Nc5 Bxc5 17.Qxc5 Bf5 18.Qc2 Bxd3 19.Qxd3 Ne4 20.Rac1 Re6 21.f3 Nd6 22.e4 dxe4 23.fxe4 Nb5 24.d5 cxd5 25.a4 Nd6 26.exd5 Rxe1+ 27.Rxe1 Qxa4 28.Be5 Ne8 29.d6 Qb4 30.d7 Qxe1+ 0-1
2020.06.27 Apeldoorn Lichess Inv
1945320 FM Elgersma, Onno (2298) Shakhverdian, William (2089) 1/2-1/2
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.d3 d6 6.O-O b5 7.Bb3 Be7 8.a3 O-O 9.Nc3 Bg4 10.Be3 Nd4 11.Bxd4 exd4 12.Nd5 Nxd5 13.Bxd5 Rb8 14.h3 Bxf3 15.Qxf3 Qd7 16.Qg3 c6 17.Bb3 Kh8 18.f4 f5 19.exf5 Qxf5 20.Rae1 Bf6 21.Qf3 d5 22.g4 Qd7 23.Qg3 Rbe8 24.Kg2 c5 25.g5 Bd8 26.Rxe8 Rxe8 27.Re1 c4 28.Ba2 Ba5 29.Rxe8+ Qxe8 30.Qf2 Bb6 31.a4 Kg8 32.Kg3 Kf7 33.h4 Qe3+ 34.Qxe3 dxe3 35.Kf3 Kg6 36.axb5 axb5 37.dxc4 bxc4 38.c3 Kh5 39.Bb1 g6 40.f5 gxf5 41.Bxf5 Kxh4 42.Bxh7 Kxg5 43.Bg8 d4 44.cxd4 Bxd4 45.Bxc4 Bxb2 46.Kxe3 1/2-1/2
2020.06.27 Apeldoorn Lichess Inv
1945337 FM Elgersma, Onno (2298) Wedda, Dries (2172) 0-1
1.Nf3 Nf6 2.d4 c5 3.dxc5 e6 4.e3 Bxc5 5.a3 d5 6.b4 Be7 7.Bb2 O-O 8.Nbd2 b6 9.Be2 Bb7 10.O-O Nbd7 11.c4 Rc8 12.Rc1 a5 13.Qb3 dxc4 14.Bxc4 axb4 15.axb4 Nd5 16.Rfd1 Bf6 17.Bxf6 Qxf6 18.Bb5 Ne5 19.Nxe5 Qxe5 20.Nf3 Qe4 21.Bc4 Rfd8 22.Rd4 Qg6 23.Rcd1 Re8 24.Bd3 Qf6 25.Bb5 Rf8 26.Bc4 Qe7 27.e4 Nf6 28.e5 Nd5 29.b5 Qc5 30.Bf1 Ne7 31.Rd7 Bd5 0-1
2020.06.27 Apeldoorn Lichess Inv
1945338 Wedda, Dries (2172) FM Elgersma, Onno (2298) 0-1
1.c4 e6 2.Nc3 d5 3.d4 Nf6 4.Bg5 Be7 5.Nf3 h6 6.Bf4 O-O 7.e3 c5 8.dxc5 Nc6 9.a3 Bxc5 10.Qc2 Qe7 11.cxd5 exd5 12.b4 Bb6 13.b5 Na5 14.Be2 Bg4 15.O-O Rac8 16.Qb2 Bxf3 17.Bxf3 Nc4 18.Qa2 Nxe3 19.Bxe3 Bxe3 20.Nxd5 Nxd5 21.Qxd5 Bg5 22.Qxb7 Qxb7 23.Bxb7 Rc2 24.a4 Bf6 25.Rac1 Ra2 26.Rc4 Re8 27.Rc8 Rxc8 28.Bxc8 Rxa4 29.Bd7 Ra2 30.g3 Bd4 31.Kg2 Bb6 32.Bc6 g6 33.h4 Kg7 34.Bf3 f5 35.Bc6 Kf6 36.Be8 g5 37.hxg5+ hxg5 38.Bc6 g4 39.Bd7 Kg5 40.Bc8 Rb2 41.Bd7 f4 42.gxf4+ Kxf4 43.Bc6 g3 44.Bd7 gxf2 45.Bc6 Rd2 46.Ra1 Bd4 47.Ra3 Rd1 48.Rf3+ Ke5 49.Rxf2 Bxf2 50.Kxf2 Kd4 51.Ke2 Rb1 52.Be8 Rb2+ 53.Kf3 Rb3+ 54.Ke2 Re3+ 0-1
2020.06.27 Apeldoorn Lichess Inv
1945339 Wedda, Dries (2172) FM Elgersma, Onno (2298) 0-1
1.c4 e6 2.Nc3 d5 3.d4 a6 4.c5 Nf6 5.Nf3 b6 6.cxb6 cxb6 7.Bf4 Bd6 8.e3 O-O 9.Bd3 Nc6 10.O-O Bb7 11.Rc1 Rc8 12.Ne5 b5 13.Qf3 Qe7 14.Qh3 b4 15.Ne2 h6 16.Ng3 Nd7 17.Qh5 Bxe5 18.dxe5 f5 19.exf6 Qxf6 20.Bd6 Rfd8 21.Bc5 e5 22.Qg4 e4 23.Be2 Nce5 24.Nh5 Nxg4 0-1
2020.06.27 Apeldoorn Lichess Inv
1945340 FM Elgersma, Onno (2298) Wedda, Dries (2172) 1-0
1.Nf3 Nf6 2.b3 a5 3.Bb2 a4 4.e3 e6 5.bxa4 Rxa4 6.Be2 Be7 7.O-O O-O 8.c4 d5 9.Nc3 Ra8 10.d4 b6 11.Qc2 Nc6 12.Rac1 Bb7 13.Rfd1 Nb4 14.Qb1 dxc4 15.Bxc4 Bxf3 16.gxf3 Ra5 17.f4 Qa8 18.Bf1 c5 19.Bg2 Qa7 20.a3 Nbd5 21.Nxd5 Nxd5 22.dxc5 Bxc5 23.Bxd5 exd5 24.Rxd5 Qe7 25.Qd3 Qh4 26.Rg5 f6 27.Rg3 Ra4 28.Qb3+ 1-0
2020.04.19 Candidates FED U16 Online
1994372 FM Elgersma, Onno (2298) Zhu, Hengyi (2202) 1/2-1/2
1.d4 Nf6 2.Nf3 d5 3.c4 e6 4.g3 Be7 5.Bg2 O-O 6.O-O dxc4 7.Qc2 b6 8.Bg5 Bb7 9.Rd1 Nbd7 10.Nc3 a6 11.a4 Nd5 12.Bxe7 Qxe7 13.Ne4 Nb4 14.Qb1 h6 15.Ned2 b5 16.Ng5 Qxg5 17.Bxb7 Rab8 18.Bg2 c5 19.Ne4 Qe7 20.axb5 axb5 21.Ra7 Nc6 22.Rc7 Rfc8 23.Rxc8+ Rxc8 24.dxc5 Nxc5 25.Nd6 Rd8 26.Nxb5 Ne5 27.Nc3 Rxd1+ 28.Qxd1 Qc7 29.Qd4 Nb3 30.Qe4 Qd6 31.h3 Qc5 32.e3 f5 33.Qa8+ Kh7 34.g4 Nd2 35.gxf5 exf5 36.Qb7 Qd6 37.Qd5 Qxd5 38.Bxd5 Nef3+ 39.Kg2 Ne1+ 40.Kg3 g5 41.Ne2 Nd3 42.Nd4 Kg6 43.Be6 Ne4+ 44.Kg2 Nd6 45.Bd7 Nxb2 46.f4 Nd3 47.fxg5 hxg5 48.Ba4 c3 49.Kf1 Kf6 50.Ke2 Nb4 51.Bb3 Ke5 52.Nf3+ Kf6 53.Nd4 Ne4 54.Ba4 g4 55.hxg4 fxg4 56.Bb3 Ke5 57.Ba4 g3 58.Bb3 g2 59.Nf3+ Kf6 60.Ng1 c2 61.Bxc2 Nxc2 62.Kf3 Ke5 63.Kxg2 Nxe3+ 64.Kf3 Nf5 1/2-1/2
2020.04.19 Candidates FED U16 Online
1994387 IM Pogosyan, Stefan (2442) FM Elgersma, Onno (2298) 1/2-1/2
1.Nf3 Nf6 2.b3 d5 3.Bb2 e6 4.e3 c5 5.Bb5+ Nc6 6.O-O Bd7 7.d3 Bd6 8.Nbd2 O-O 9.e4 Be7 10.Bxc6 Bxc6 11.Ne5 Rc8 12.Qf3 Be8 13.a4 d4 14.Ndc4 b6 15.Bc1 a6 16.Bd2 Ra8 17.Qg3 b5 18.Ba5 Qb8 19.Nb6 Ra7 20.Ng6 Bd6 21.e5 hxg6 22.exd6 Rb7 23.axb5 axb5 24.d7 Bxd7 25.Nxd7 Nxd7 26.Qf3 Ne5 27.Qe4 Nd7 28.Bd2 Nf6 29.Qf3 Nd5 30.Ra6 Qc7 31.Rfa1 c4 32.bxc4 bxc4 33.dxc4 Qxc4 34.Qd3 Qxd3 35.cxd3 Rb3 36.R6a3 Rfb8 37.g3 Rb2 38.Ba5 Rc2 39.R3a2 Rxa2 40.Rxa2 Rb1+ 41.Kg2 Rd1 42.Ra3 g5 43.Kf3 f5 44.h3 Kf7 45.Ke2 Rh1 46.Bd2 f4 47.gxf4 gxf4 48.Ra7+ Kf6 49.Ra4 Rxh3 50.Rxd4 f3+ 51.Kd1 Rh2 52.Be3 Kf5 53.Kd2 Rh1 54.Re4 g5 55.Ra4 g4 56.Ra8 Nxe3 57.Kxe3 Re1+ 58.Kd4 Re2 59.Rf8+ Kg6 60.Rg8+ Kf7 61.Rxg4 Rxf2 62.Rf4+ Kg6 63.Ke3 Rf1 64.Rxf3 Rxf3+ 65.Kxf3 Kf5 66.Ke3 1/2-1/2
2020.04.18 Candidates FED U16 Online
1994332 FM Elgersma, Onno (2298) FM Razafindratsima, Timothe (2336) 0-1
1.d3 d5 2.Nf3 c5 3.g3 Nc6 4.Bg2 Nf6 5.O-O g6 6.Nbd2 Bg7 7.e4 O-O 8.exd5 Nxd5 9.Re1 e5 10.Nc4 Re8 11.c3 Rb8 12.a4 Bf5 13.Ng5 h6 14.Ne4 Bxe4 15.dxe4 Nc7 16.Be3 b6 17.Bh3 Ne6 18.Qe2 Qe7 19.Rad1 Red8 20.Bc1 Ng5 21.Bg2 Qc7 22.Ne3 Ne7 23.h4 Ne6 24.Bh3 Qc6 25.Qc4 Kh7 26.Nd5 Nc8 27.h5 Nd6 28.hxg6+ fxg6 29.Qe2 Nc7 30.Qg4 Nxd5 31.exd5 Qe8 32.Qh4 Qf7 33.Be6 Qf3 34.Bg4 Qf7 35.Bh3 Nf5 36.Qe4 Nd6 37.Qe2 Rf8 38.Be3 Nf5 39.Kg2 Nxe3+ 40.Qxe3 Rbd8 41.c4 Qb7 42.b3 a6 43.Bg4 b5 44.axb5 axb5 45.Be2 bxc4 46.Bxc4 Qc7 47.Qe4 Qd6 48.Re2 Ra8 49.Rh1 Ra3 50.Rd1 Rfa8 51.Qf3 Rf8 52.Qe4 Ra7 53.Rd3 Rf6 54.Rf3 Rxf3 55.Qxf3 Ra8 56.Qe4 Rf8 57.Re3 Ra8 58.Rf3 Kg8 59.Bd3 Ra1 60.Qxg6 Qxg6 61.Bxg6 Rd1 62.Be4 Rd4 63.Bf5 Kh8 64.Be6 e4 65.Rf7 Be5 66.Rf8+ Kg7 67.Rc8 Rd2 68.Kf1 Bd4 69.Ke1 Rxf2 70.Rg8+ Kh7 71.Re8 e3 72.d6 Bc3+ 73.Kd1 e2+ 74.Kc2 e1=Q+ 75.Kd3 Qd2+ 76.Kc4 Qxd6 0-1
2020.04.18 Candidates FED U16 Online
1994337 FM Elgersma, Onno (2298) GM Abdusattorov, Nodirbek (2627) 0-1
1.d4 d5 2.Nf3 Nf6 3.Bf4 e6 4.e3 Bd6 5.Bg3 c5 6.c3 O-O 7.Nbd2 Nc6 8.Bb5 Be7 9.Bd3 Nh5 10.Ne5 g6 11.Ndf3 Bd7 12.O-O Be8 13.Qe2 Rc8 14.Nxc6 bxc6 15.dxc5 Nxg3 16.hxg3 Bxc5 17.e4 Qb6 18.Rab1 Be7 19.g4 Bf6 20.e5 Bg7 21.c4 dxc4 22.Bxc4 c5 23.g5 Bc6 24.Nh2 Rfd8 25.Rfd1 Rd4 26.Rxd4 cxd4 27.Ng4 Qc5 28.Bd3 Bb7 29.f3 Bf8 30.Nf6+ Kh8 31.Kf2 Bg7 32.Rh1 h6 33.Ng4 Kg8 34.Nxh6+ Bxh6 35.gxh6 Kh7 36.Re1 Qe7 37.Rh1 Qg5 38.g3 Rc5 39.f4 Qd8 40.Rg1 Qd5 41.a3 Kxh6 42.g4 Kg7 43.g5 Rc8 44.Qg4 Rh8 45.Qg3 Qb3 46.Be2 Qxb2 47.Rd1 Ba6 48.Qf3 Bxe2 0-1
2020.04.18 Candidates FED U16 Online
1994362 IM Yoo, Christopher Woojin (2455) FM Elgersma, Onno (2298) 1-0
1.e4 c6 2.d4 g6 3.Nc3 d5 4.h3 Bg7 5.Nf3 dxe4 6.Nxe4 Nf6 7.Nxf6+ exf6 8.Be2 O-O 9.O-O Re8 10.Be3 f5 11.c4 Nd7 12.Qc2 Nf6 13.Rad1 Qc7 14.Rfe1 a5 15.Qc1 Ne4 16.Bf4 Qb6 17.Bd3 a4 18.Qc2 Bd7 19.Be5 Nf6 20.Qc1 Qb4 21.a3 Qb6 22.Re2 Rad8 23.Rde1 c5 24.d5 h6 25.Qf4 g5 26.Qc1 f4 27.Qc3 Nh5 28.Bxg7 Nxg7 29.Ne5 Qd6 30.Bc2 Bf5 31.Bxa4 Re7 32.Ng4 1-0
2019.12.30 57th Groningen Open 2019
2028686 WFM Harshini, A (2076) FM Elgersma, Onno (2319) 0-1
1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nf6 5.Bd3 Nc6 6.Nxc6 bxc6 7.O-O d5 8.Bg5 Be7 9.e5 Nd7 10.Bxe7 Qxe7 11.Qg4 O-O 12.Re1 Nc5 13.Nd2 Rb8 14.Qd4 Nxd3 15.Qxd3 f6 16.b3 c5 17.Nf3 f5 18.c3 a5 19.Nd2 g5 20.Re3 g4 21.f4 gxf3 22.Rxf3 Kh8 23.Rh3 Rg8 24.Rf1 Rg4 25.Rh5 Qg7 26.Qe2 Bb7 27.h3 Rg3 28.Rf3 Rg8 29.Rxg3 Qxg3 30.Nf1 Qg6 31.g3 d4 32.cxd4 cxd4 33.Rh4 Be4 34.Qd2 Qg7 35.Qxd4 Rc8 36.a4 Bd5 37.Qb2 Rb8 38.Qc3 Rxb3 39.Qc8+ Qg8 40.Qxg8+ Kxg8 41.Kf2 Ra3 42.Ne3 Be4 43.Rf4 Rxa4 44.g4 fxg4 45.Nxg4 Kg7 46.Ne3 Rb4 47.Rf6 Rb6 48.Nc4 Ra6 49.Nd6 Rxd6 0-1
2019.12.29 57th Groningen Open 2019
2035628 FM Elgersma, Onno (2319) Nicolai, Am (2108) 1/2-1/2
1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 e5 5.Nb5 d6 6.c4 Be7 7.N1c3 a6 8.Na3 Be6 9.Nc2 Rc8 10.b3 Nf6 11.Be2 b5 12.cxb5 Na7 13.Bd2 d5 14.exd5 Nxd5 15.Nxd5 Bxd5 16.Ne3 Nxb5 17.Nxd5 Qxd5 18.O-O O-O 19.Bc4 Qd6 20.Be3 Nd4 21.Qh5 g6 22.Qh3 Bf6 23.Rad1 Rcd8 24.Kh1 Qa3 25.Rd2 Nf5 26.Rxd8 Rxd8 27.Qf3 h5 28.Qb7 Nd6 29.Qb6 Kg7 30.Bd5 Qxa2 31.Bc5 Qe2 32.Ra1 Qd3 33.Bf3 Nc8 34.Qxa6 Qc3 35.Qa5 e4 36.Qxc3 Bxc3 37.Rd1 Rxd1+ 38.Bxd1 Kf6 39.b4 Ke5 40.Bb3 Nd6 41.Kg1 f6 42.Kf1 h4 43.Ke2 Nb7 44.Bf7 Nxc5 45.bxc5 g5 46.c6 Kd6 47.Be8 Bd4 48.g3 Bb6 49.gxh4 gxh4 50.h3 Bd4 51.Bg6 Kxc6 52.Bxe4+ 1/2-1/2
2019.12.28 57th Groningen Open 2019
2035600 WIM Krasenkova, I (2174) FM Elgersma, Onno (2319) 1/2-1/2
1.d4 d5 2.c4 e6 3.g3 Nf6 4.Bg2 Bb4+ 5.Bd2 Be7 6.Nf3 O-O 7.Qc2 c6 8.O-O Nbd7 9.Rd1 a5 10.b3 b6 11.Nc3 Bb7 12.e4 dxe4 13.Ng5 c5 14.dxc5 Nxc5 15.Be3 Qc7 16.Ncxe4 Ncxe4 17.Nxe4 Rfd8 18.Rab1 Rxd1+ 19.Rxd1 Bxe4 20.Bxe4 Rd8 21.Bf3 Bc5 22.Rxd8+ Qxd8 23.Qd2 Qxd2 24.Bxd2 Ne8 25.Kf1 f5 26.Bc6 Nf6 27.f3 Kf7 28.Bc3 h6 29.Be5 g5 30.Bc7 g4 31.Kg2 h5 32.h3 Ke7 33.Bf4 Bd6 34.Be3 Bc7 35.c5 gxf3+ 36.Kxf3 bxc5 37.Bxc5+ Bd6 38.Bb6 Bb4 39.a3 Bxa3 40.Bxa5 e5 41.b4 Ke6 42.b5 e4+ 43.Ke2 Bd6 44.Be1 Bb8 45.b6 h4 46.gxh4 f4 47.Bd2 Kf5 48.Bb7 f3+ 49.Kf2 Nh5 50.Bc8+ Kf6 51.Bg4 Ng3 52.Bg5+ Kg6 53.Be3 Nh1+ 54.Kg1 Ng3 55.Kf2 Nh1+ 56.Kg1 Ng3 57.Kf2 Be5 58.b7 Bb8 59.Bxf3 exf3 60.Kxf3 Nf5 61.Bf4 Nd4+ 62.Kg4 Nc6 63.h5+ Kh7 64.Bxb8 Nxb8 65.Kg5 Na6 66.Kf6 1/2-1/2
2019.12.27 57th Groningen Open 2019
2035577 FM Elgersma, Onno (2319) Van Hoorn, Geert (2032) 1/2-1/2
1.d4 Nf6 2.Nf3 g6 3.e3 Bg7 4.Be2 O-O 5.O-O d6 6.c4 c5 7.d5 e6 8.Nc3 exd5 9.cxd5 Re8 10.Nd2 Na6 11.e4 Nc7 12.a4 a6 13.a5 Nb5 14.Nxb5 axb5 15.Bxb5 Bd7 16.Bxd7 Qxd7 17.Nc4 Ra6 18.Qd3 Nxe4 19.Nb6 Qf5 20.Qb5 Re7 21.Be3 Nf6 22.Rad1 Ng4 23.h3 Nxe3 24.fxe3 Qe4 25.Kh1 Qb4 26.Qxb4 cxb4 27.Nc4 b3 28.Rf4 Bh6 29.Rf6 Rd7 30.Nb6 Rd8 31.Rdf1 Rxa5 32.Rxf7 Rb5 33.Nc4 Rc5 34.Nd2 Rxd5 35.Nxb3 Rb5 36.Nd4 Rxb2 37.Re7 Rf8 38.Rc1 Rbf2 39.Rcc7 R2f7 40.Rxb7 Bxe3 41.Ne6 Rxe7 42.Rxe7 Rc8 43.g3 d5 44.Kg2 d4 45.Kf3 Rc6 46.Ke4 Rd6 47.Ke5 Ra6 48.g4 d3 49.Rg7+ Kh8 50.Rd7 Ra8 51.Rxd3 Bf2 52.Kf6 Bh4+ 53.g5 h6 54.Kxg6 hxg5 55.Rd7 Kg8 56.Nc7 Rc8 57.Nd5 Rc6+ 58.Nf6+ Rxf6+ 59.Kxf6 g4+ 60.Kg6 gxh3 61.Rh7 Bd8 62.Rd7 Bh4 63.Rh7 Bd8 64.Rxh3 Kf8 65.Re3 Be7 66.Kf5 Kf7 67.Rb3 Bc5 68.Ke5 Bg1 69.Rb7+ Kg6 70.Ke6 Bc5 71.Rb5 Ba7 72.Rf5 Bb6 73.Rf8 Kg5 74.Rb8 Be3 75.Rb5+ Kf4 76.Rb4+ Kg5 77.Ke5 Bc5 78.Rb8 Kg6 79.Ke6 Kg7 80.Rb5 Be3 81.Rb3 Bc5 82.Rg3+ Kf8 83.Rg2 Ba3 1/2-1/2
2019.12.26 57th Groningen Open 2019
2035546 Berndt, Ma (2065) FM Elgersma, Onno (2319) 1/2-1/2
1.e4 e6 2.d4 d5 3.Nd2 Nf6 4.g3 c5 5.Bg2 Nc6 6.Ngf3 Be7 7.O-O O-O 8.Re1 Qc7 9.c3 b5 10.e5 Nd7 11.Qe2 b4 12.c4 Nb6 13.Nf1 Bb7 14.h4 Rfd8 15.N1h2 a5 16.b3 a4 17.Bf4 axb3 18.axb3 Rxa1 19.Rxa1 Ra8 20.Rxa8+ Bxa8 21.Ng5 Bxg5 22.hxg5 Nxd4 23.Qh5 dxc4 24.Bxa8 Nxa8 25.bxc4 Qb7 26.Qd1 Qe4 27.f3 Qf5 28.Qa1 Nc7 29.Qa7 Qb1+ 30.Kg2 Qc2+ 31.Kh3 Ne8 32.Qe7 h5 33.Qxe8+ Kh7 34.Qxf7 Qg6 35.Qxg6+ Kxg6 36.g4 Nb3 37.Nf1 Na5 38.Nd2 b3 39.Be3 b2 40.Nb1 Nxc4 41.Bxc5 hxg4+ 42.Kxg4 Nxe5+ 43.Kg3 Nd3 44.Be3 Kf5 45.Bd2 1/2-1/2
2019.12.23 57th Groningen Open 2019
2035475 FM Elgersma, Onno (2319) CM Mollema, Thomas (2207) 0-1
1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 a6 5.Be2 Nf6 6.Qd3 e5 7.Nf3 d5 8.Nbd2 Nc6 9.c3 Be6 10.O-O h6 11.Rd1 Bc5 12.h3 Qb6 13.Rf1 Rd8 14.Qc2 O-O 15.exd5 Bxd5 16.b4 Bxf2+ 17.Rxf2 e4 18.Nf1 exf3 19.Be3 Qc7 20.Bxf3 Bxf3 21.Rxf3 Nxb4 22.Qf5 Nbd5 23.Bd4 Qd7 24.Qe5 Rfe8 25.Qg3 Qd6 26.c4 Nf4 27.Qxf4 Qxd4+ 28.Qxd4 Rxd4 29.Rb1 Re7 30.Ne3 Rd2 31.Nf5 Ree2 32.Rg3 Nh5 33.Rg4 Rf2 34.Ne7+ Kh7 35.Rxb7 f5 36.Rg6 Rfe2 37.c5 Rxe7 38.Rxe7 Kxg6 39.Re6+ Kg5 40.Rxa6 Ng3 41.Rd6 Rxd6 42.cxd6 Kf6 43.Kf2 Ne4+ 44.Ke3 Nxd6 45.Kd4 Ke6 46.Kc5 Ke5 47.a4 g5 48.Kc6 Nc4 49.Kc5 Na5 50.Kb5 Nb3 51.Kc4 Nd4 52.a5 Nc6 53.a6 Kd6 54.g3 h5 55.h4 f4 56.gxf4 gxh4 57.f5 h3 58.f6 h2 59.f7 Ne5+ 60.Kb5 Nxf7 61.Kb6 h1=Q 62.Ka7 Ne5 63.Kb8 Nd7+ 64.Ka7 Kc6 65.Ka8 Kb6# 0-1
2019.12.22 57th Groningen Open 2019
2036961 GM Van Foreest, Lucas (2526) FM Elgersma, Onno (2319) 1-0
1.d4 d5 2.c4 e6 3.Nf3 Nf6 4.g3 Be7 5.Bg2 O-O 6.Nc3 dxc4 7.Ne5 Nc6 8.Bxc6 bxc6 9.Nxc6 Qe8 10.Nxe7+ Qxe7 11.Qa4 c5 12.dxc5 Qxc5 13.Be3 Qc7 14.f3 Bb7 15.Rd1 Nd5 16.Nxd5 exd5 17.Bd4 Rfe8 18.Kf2 Re6 19.Qb4 Rae8 20.Rde1 f6 21.Qd2 a6 22.g4 Qf7 23.Rhg1 R8e7 24.h4 Qg6 25.Rg2 Bc6 26.g5 f5 27.Qf4 Qh5 28.e3 Bd7 29.Rh1 Re8 30.Rc1 R6e7 31.b3 Be6 32.g6 h6 33.Rg3 Rb7 34.Kg2 a5 35.Rc2 Rc8 36.bxc4 dxc4 37.Rb2 Rxb2+ 38.Bxb2 Bd5 39.Qe5 Bxf3+ 40.Kf2 1-0
2019.12.21 57th Groningen Open 2019
2035461 FM Elgersma, Onno (2319) Boersma, J (2069) 1-0
1.Nf3 Nf6 2.d4 g6 3.Nbd2 Bg7 4.e4 d6 5.Bb5+ c6 6.Bd3 O-O 7.O-O c5 8.c3 Nc6 9.d5 Nb8 10.a4 e6 11.c4 Na6 12.a5 Re8 13.h3 Nb4 14.Bb1 Bd7 15.Ne1 Qe7 16.Nd3 Nxd3 17.Bxd3 Nh5 18.Nf3 e5 19.Re1 Qf8 20.Bd2 Bh6 21.b4 Bxd2 22.Qxd2 Rac8 23.Rab1 cxb4 24.Rxb4 Rc7 25.Qe3 Nf4 26.Bf1 a6 27.Rb6 Bc8 28.Qa3 Rd8 29.Nd2 Qe7 30.Kh2 Kg7 31.g3 Nh5 32.Qe3 Nf6 33.f4 Nd7 34.Rbb1 Nc5 35.fxe5 dxe5 36.Nf3 Rd6 37.Qa3 f6 38.Rb6 Rxb6 39.axb6 Rd7 40.Qb4 Qd6 41.Nd2 Nxe4 42.c5 Nxc5 43.Rc1 Qxd5 44.Bg2 Qxd2 45.Qxc5 Rd3 46.Qxc8 Rxg3 47.Rc7+ Kh6 48.Qxb7 Qf4 49.Rxh7+ Kg5 50.h4+ Kg4 51.Qd7+ f5 52.Qd1+ Rf3+ 53.Kh1 e4 54.b7 Kg3 55.Bxf3 exf3 56.Qg1+ Kh3 57.Qf1+ Kg3 58.Rh8 1-0
2019.10.26 23rd Hoogeveen Open 2019
2061648 Emans, Job (2028) Elgersma, Onno (2306) 0-1
1.d4 d5 2.c4 e6 3.Nf3 Nf6 4.g3 Be7 5.Bg2 O-O 6.O-O dxc4 7.Qc2 a6 8.Qxc4 b5 9.Qc2 Bb7 10.Bd2 Be4 11.Qb3 Nc6 12.e3 b4 13.Rc1 Bd5 14.Qc2 Rc8 15.Ng5 Bxg2 16.Kxg2 Nb8 17.a3 c5 18.Nf3 Qd7 19.Qb3 cxd4 20.Rxc8 Rxc8 21.Nxd4 bxa3 22.Nxa3 Ne4 23.Be1 Nc5 24.Qd1 Qb7+ 25.Kg1 Qxb2 26.Nc4 Qb7 27.Rb1 Qe4 28.Bb4 Nbd7 29.f3 Qd5 30.Qe2 Rb8 31.Qc2 h6 32.Kg2 Bf6 33.Ne2 a5 34.Rd1 Qc6 35.Bxa5 Nb3 36.Qe4 Qxe4 37.fxe4 Ndc5 38.Kf3 Nxa5 39.Nxa5 Ra8 40.Nc6 Ra6 41.Ncd4 Nd7 42.h3 Ne5+ 43.Kf2 Ra3 44.Nb5 Rb3 45.Nbd4 Rb2 46.Nf3 Nc4 47.Rd3 g6 48.Kf1 Kg7 49.Kf2 h5 50.Kf1 Rb4 51.Nfd4 Nxe3+ 52.Rxe3 Bxd4 53.Nxd4 Rxd4 54.e5 Rd2 55.Rf3 g5 56.Ke1 Rh2 57.Kf1 Rh1+ 58.Kf2 Ra1 59.Re3 Ra5 60.Kf3 Kg6 61.g4 h4 62.Ke4 Ra4+ 63.Kf3 Rf4+ 64.Ke2 Kg7 65.Ke1 Kf8 66.Ke2 Ke7 67.Kd2 Rf2+ 68.Kc3 Rg2 69.Kc4 Rg3 70.Kd4 Kd7 71.Ke4 Rxe3+ 72.Kxe3 Kc6 73.Kd4 Kb5 74.Ke3 Kc4 75.Ke4 0-1
2019.10.25 23rd Hoogeveen Open 2019
2061602 Elgersma, Onno (2306) IM Beerdsen, Thomas (2472) 0-1
1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 5.Nc3 Qc7 6.Be3 a6 7.Qd2 Nf6 8.f4 Bb4 9.Bd3 b5 10.a3 Be7 11.e5 Ng4 12.Bg1 Bb7 13.Ne4 f5 14.exf6 Nxf6 15.Ng5 O-O 16.O-O-O b4 17.a4 h6 18.h4 hxg5 19.hxg5 Nxd4 20.Bxd4 Ne4 21.Bxe4 Bxe4 22.Bxg7 Rxf4 23.Bd4 e5 24.g3 Rg4 25.Rh4 Rxh4 26.gxh4 exd4 27.Re1 d5 0-1
2019.10.24 23rd Hoogeveen Open 2019
2061570 IM Zwirs, Nico (2421) Elgersma, Onno (2306) 1/2-1/2
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 a6 5.cxd5 exd5 6.Bg5 Be6 7.e3 Nbd7 8.Bd3 Bd6 9.O-O c6 10.Rb1 h6 11.Bf4 Qc7 12.Bg3 O-O 13.b4 Bxg3 14.hxg3 b5 15.a4 Nb6 16.Nd2 Nc4 17.Nb3 Ng4 18.Bxc4 bxc4 19.Nc5 Qe7 20.Ne2 Bf5 21.Rc1 Rfb8 22.Qd2 Qg5 23.Nf4 Nf6 24.Nh3 Bxh3 25.gxh3 Qf5 26.Kg2 Ne4 27.Nxe4 Qxe4+ 28.f3 Qe7 29.Rb1 Ra7 30.Rb2 Rab7 31.Rfb1 Kf8 32.Qc3 h5 33.h4 Kg8 34.Kf2 Rb6 35.Kg2 Kh8 36.Kf2 f6 37.e4 dxe4 38.Qxc4 exf3 39.Qc5 Qe4 40.Qxh5+ Kg8 41.Qxf3 Qxd4+ 42.Qe3 Qd5 43.Qb3 Qxb3 44.Rxb3 c5 45.b5 c4 46.Rb4 c3 47.Rc1 axb5 48.Rxc3 bxa4 49.Rxa4 Rb2+ 50.Kf3 R2b3 51.Rxb3 Rxb3+ 52.Kf4 Kh7 53.Kg4 Kh6 54.Ra8 Rb4+ 55.Kh3 Kh7 56.h5 Rb5 57.g4 Rb3+ 58.Kh4 Rb4 59.Rf8 Rb1 60.Ra8 1/2-1/2
2019.10.23 23rd Hoogeveen Open 2019
2061542 Elgersma, Onno (2306) Sparenberg, E (2142) 1-0
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.d3 d6 7.c4 O-O 8.h3 Bd7 9.Be3 Nb8 10.Nc3 c5 11.a3 Nc6 12.b4 cxb4 13.Bxc6 bxc3 14.Bxb7 Rb8 15.Rb1 Qc7 16.Bxa6 Qa5 17.Bb7 Ba4 18.Qc1 c2 19.Rb4 d5 20.Bb6 Bxb4 21.Bxa5 Bxa5 22.Bc6 Bxc6 23.Qxc2 dxe4 24.Nxe5 exd3 25.Qxd3 Be4 26.Qd4 Rbd8 27.Qb2 Rd2 28.Qb5 Bc7 29.Nc6 Re8 30.Nb4 h6 31.c5 Red8 32.c6 Nd5 33.Nxd5 Bxd5 34.Qb7 Be5 35.Qb6 Bf6 36.c7 Rf8 37.Qd6 Rc8 38.Qd7 Rf8 39.c8=Q Rxc8 40.Qxc8+ Kh7 41.Qf5+ Kg8 42.Rb1 Kf8 43.Qf4 Rc2 44.Qd6+ 1-0
2019.10.22 23rd Hoogeveen Open 2019
2061505 Takawira, Erick (2101) Elgersma, Onno (2306) 0-1
1.e4 e6 2.d4 d5 3.Nd2 c5 4.Ngf3 Nc6 5.exd5 Qxd5 6.Bc4 Qd7 7.dxc5 Bxc5 8.O-O Nf6 9.Qe2 Qc7 10.Ne4 Be7 11.c3 a6 12.a4 b6 13.Re1 Bb7 14.Neg5 O-O 15.Bxe6 fxe6 16.Nxe6 Qc8 17.Nxf8 Bxf8 18.Qc4+ Kh8 19.Ng5 Nd8 20.Qh4 Qf5 21.Be3 Qg6 22.f3 Nd5 23.Bd2 h6 24.Qe4 Ne7 25.Qxg6 Nxg6 26.Ne6 Nxe6 27.Rxe6 Bc5+ 28.Kh1 Rd8 29.Rxg6 Rxd2 30.b4 Bf2 31.Rc1 b5 32.axb5 axb5 33.h3 Kh7 34.Re6 Bd5 35.Rd6 Bg3 36.Rd7 h5 37.h4 Bxh4 38.Kh2 Bg5 39.Re1 Bf4+ 40.Kg1 Bg3 41.Rc1 Kh6 42.Ra1 g6 43.Rd8 Kg5 44.Rc1 h4 45.Rd7 h3 46.gxh3 Bh2+ 0-1
2019.10.21 23rd Hoogeveen Open 2019
2064144 Elgersma, Onno (2306) WFM Kirchei, Viktoriia (2051) 0-1
1.e4 c5 2.Nf3 Nc6 3.Bb5 g6 4.O-O Bg7 5.c3 d6 6.h3 Bd7 7.Re1 e5 8.d3 Nge7 9.Nbd2 a6 10.Bxc6 Bxc6 11.a3 O-O 12.b4 b6 13.Nc4 Qc7 14.Bg5 f6 15.Be3 Rab8 16.Rc1 h6 17.a4 a5 18.Nfd2 f5 19.f3 f4 20.Bf2 Rfd8 21.Qe2 axb4 22.cxb4 Bxa4 23.Na3 Be8 24.bxc5 dxc5 25.Ndc4 Qd7 26.Red1 Nc6 27.Rb1 Nd4 28.Qa2 Bf7 29.Bxd4 Qxd4+ 30.Qf2 Qxf2+ 31.Kxf2 b5 32.Nb2 Bf8 33.Nc2 c4 34.dxc4 bxc4 35.Rxd8 Rxd8 36.Rd1 Rb8 37.Na4 Be8 38.Nc3 Rb2 39.Rd2 Bb4 40.Nd1 Ra2 41.Re2 Bc5+ 42.Ke1 Bb6 43.Nb4 Ra1 44.Ra2 Rxa2 45.Nxa2 Ba5+ 46.Ndc3 Kf7 47.Kd1 g5 48.Ke2 Bc6 49.Kf2 Ke6 50.Ke2 Kd6 51.Kd1 Kc5 52.Ne2 h5 53.Nac3 Kd6 54.Kc2 Ke6 55.Nd1 Ba4+ 56.Kc1 g4 57.hxg4 hxg4 58.Ndc3 Bc6 59.Kc2 gxf3 60.gxf3 Kd6 61.Kb2 Be8 62.Nd5 Be1 63.Nf6 Bc6 64.Ng4 Bd7 65.Nf6 Bh3 66.Kc1 Bg2 67.Kd1 Ba5 68.Kc2 Bxf3 69.Ng1 Bg2 70.Kd1 Ke6 0-1
2019.10.21 23rd Hoogeveen Open 2019
2064115 Noordenbos, Daan (2133) Elgersma, Onno (2306) 0-1
1.e4 c6 2.d4 d5 3.e5 Bf5 4.Nc3 a6 5.g4 Bd7 6.Bd3 c5 7.dxc5 e6 8.Qe2 Nc6 9.Nf3 Bxc5 10.Bd2 b5 11.a4 b4 12.Nd1 0-1
2019.10.20 23rd Hoogeveen Open 2019
2064066 Elgersma, Onno (2306) IM Schoppen, Casper (2508) 0-1
1.e4 c5 2.Nf3 Nc6 3.Bb5 g6 4.O-O Bg7 5.c3 e5 6.d4 cxd4 7.cxd4 exd4 8.Bf4 Nge7 9.Bd6 O-O 10.Nbd2 a6 11.Bc4 b5 12.Bd5 Nxd5 13.Bxf8 Qxf8 14.exd5 Ne7 15.Nb3 Bb7 16.Re1 Bxd5 17.Nfxd4 Nc6 18.Nf3 Be6 19.Nbd4 Bd5 20.Nc2 Be6 21.Nfd4 Bc4 22.b3 Nxd4 23.Nxd4 Qc5 24.bxc4 Bxd4 25.Qf3 Rd8 26.Rad1 bxc4 27.Qf4 Bg7 28.Re4 c3 29.Rc4 Qe7 30.Re4 Qf8 31.Rc4 d5 32.Qc7 Re8 33.Rxc3 Bxc3 34.Qxc3 Qd6 35.Qd4 Re2 36.a4 Qe6 37.h3 Re1+ 38.Rxe1 Qxe1+ 39.Kh2 Qe4 40.Qa7 Qf4+ 41.g3 Qf6 42.Kg2 d4 43.Qa8+ Kg7 44.Qd5 h5 45.a5 h4 46.f4 Kh7 47.Kf2 hxg3+ 48.Kxg3 Qe7 49.h4 Qe3+ 50.Qf3 Qc3 51.Kf2 Qxa5 52.Qb7 Qd2+ 53.Kf3 Qe3+ 54.Kg4 Qe6+ 55.Kg3 d3 0-1
2019.10.19 23rd Hoogeveen Open 2019
2064047 CM Dev, Shah (2025) Elgersma, Onno (2306) 0-1
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.cxd5 exd5 5.Bg5 c6 6.e3 Bd6 7.Bd3 O-O 8.Nge2 Re8 9.Qc2 h6 10.Bh4 a5 11.Bg3 Na6 12.a3 Nc7 13.O-O Ne6 14.f3 Qc7 15.Rae1 Bd7 16.Bxd6 Qxd6 17.Ng3 c5 18.dxc5 Nxc5 19.Bb5 Qb6 20.Bxd7 Ncxd7 21.Nf5 Ne5 22.Na4 Qd8 23.Qb3 b5 24.Nc3 b4 25.axb4 axb4 26.Nb5 Qb6 27.Nbd4 Nc4 28.Rd1 Re5 29.Rfe1 Rae8 30.Kf2 g6 31.Nxh6+ Kg7 32.Ng4 Nxg4+ 33.fxg4 Nxe3 34.Rxe3 Rxe3 35.Qxd5 Re2+ 36.Kf1 Qf6+ 0-1
2019.08.10 23rd HZ Open 2019
2335411 GM Ikonnikov, Vy (2497) Elgersma, Onno (2258) 1-0
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Bd2 b6 5.e3 Bb7 6.Nf3 O-O 7.Bd3 d5 8.O-O Bd6 9.cxd5 exd5 10.Nb5 Be7 11.Rc1 c5 12.Ne5 Nc6 13.Nxc6 Bxc6 14.dxc5 bxc5 15.Nd4 cxd4 16.Rxc6 Qd7 17.Qc2 Rac8 18.Rc1 Rxc6 19.Qxc6 Qg4 20.h3 Qh4 21.Qa4 Ne4 22.Bxe4 dxe4 23.exd4 Bg5 24.Qa5 Bxd2 25.Qxd2 Qe7 26.d5 Qd6 27.Rc6 Qd7 28.Qd4 f5 29.Qe5 Rc8 30.Re6 Qf7 31.d6 Kf8 32.Re7 Qg6 33.d7 Rd8 34.Re6 Qf7 35.Qd6+ Kg8 36.Re7 1-0
2019.08.09 23rd HZ Open 2019
2335361 Elgersma, Onno (2258) GM Hausrath, D (2467) 1/2-1/2
1.e4 c6 2.d4 d5 3.e5 Bf5 4.Nf3 e6 5.Be2 Nd7 6.O-O Bg6 7.Nbd2 Nh6 8.Nb3 Be7 9.a4 a5 10.Bd2 O-O 11.Rc1 Qb6 12.c4 dxc4 13.Bxc4 Bb4 14.Bg5 Qc7 15.Be2 Nf5 16.Nh4 Nxh4 17.Bxh4 Rfe8 18.h3 Be7 19.Bxe7 Rxe7 20.Qd2 Qb6 21.Qe3 Ree8 22.f4 Rad8 23.g4 Be4 24.Nc5 Bd5 25.Nd3 f6 26.Rc3 Rf8 27.Rf2 fxe5 28.fxe5 Rxf2 29.Kxf2 Rf8+ 30.Kg3 h6 31.Nf4 Qxb2 32.Nxd5 cxd5 33.Rb3 Qa1 34.Rxb7 Qe1+ 35.Kg2 Rf7 36.Rc7 Qa1 37.Bb5 Nf8 38.Rxf7 Kxf7 39.Qf2+ Ke7 40.Qh4+ Kf7 41.Qf2+ Ke7 42.Qc2 Kf7 43.Qf2+ 1/2-1/2
2019.08.08 23rd HZ Open 2019
2335316 FM Lacrosse, M (2160) Elgersma, Onno (2258) 0-1
1.d4 Nf6 2.c4 e6 3.Nf3 d5 4.Bg5 dxc4 5.Nc3 a6 6.a4 Nc6 7.e3 Na5 8.Nd2 c5 9.Nxc4 cxd4 10.Bxf6 Qxf6 11.Qxd4 Nxc4 12.Bxc4 Bd7 13.O-O Qxd4 14.exd4 Rc8 15.Bb3 Bb4 16.Rac1 O-O 17.Rfd1 Rfd8 18.Kf1 h6 19.Ke2 Ba5 20.Ne4 Bc6 21.Ke3 Bb6 0-1
2019.08.07 23rd HZ Open 2019
2335260 Elgersma, Onno (2258) GM Ortiz Suarez, I (2551) 1/2-1/2
1.e4 c5 2.Nf3 d6 3.Bb5+ Nc6 4.O-O Bd7 5.Re1 Nf6 6.c3 a6 7.Bc4 Bg4 8.d4 Bxf3 9.gxf3 Qc7 10.f4 cxd4 11.cxd4 e5 12.d5 Nd4 13.Bd3 g6 14.Be3 Bg7 15.Bxd4 exd4 16.Qf3 O-O 17.Nd2 Nh5 18.Nf1 Bh6 19.f5 Nf4 20.Ng3 Rac8 21.Ne2 Nxd3 22.Qxd3 Qc2 23.Qxc2 Rxc2 24.Nxd4 Rxb2 25.fxg6 hxg6 26.Rab1 Rxa2 27.Rxb7 Re8 28.Nc6 Bf4 29.Ra7 Kg7 30.Kg2 Ra3 31.h3 g5 32.Rb1 Rh8 33.Rbb7 Rhxh3 34.Rxf7+ Kg6 35.Rg7+ Kh5 36.Rh7+ Kg4 37.Rxa6 Rxa6 38.Rxh3 Ra2 39.Rh7 Rd2 40.Ne7 Be5 41.Rf7 Kh5 42.Nc6 Bf4 43.Rf6 Ra2 44.Nd8 Be5 45.Rf5 Ra4 46.Nf7 Bf4 47.Rf6 Ra2 48.Nxd6 Be5 49.Re6 Bd4 50.Nf5 Ba7 51.Ng3+ Kg4 52.Rf6 Bd4 53.Rf7 Rd2 54.Rf5 Bc5 55.Rf7 Bb6 56.Nh1 Bc5 57.Rf6 Bd4 58.Re6 Kf4 59.d6 Be5 60.Ng3 Rxd6 61.Rxd6 Bxd6 1/2-1/2
2019.08.06 23rd HZ Open 2019
2335216 Mijnster, N (2139) Elgersma, Onno (2258) 0-1
1.d4 Nf6 2.Bf4 d5 3.e3 e6 4.Nd2 c5 5.c3 Nc6 6.Ngf3 cxd4 7.exd4 Nh5 8.Bg5 f6 9.Bh4 Bd6 10.Bb5 O-O 11.O-O g6 12.Re1 a6 13.Bf1 b5 14.a4 Rb8 15.b4 g5 16.Bg3 Nxg3 17.hxg3 g4 18.Nh4 f5 19.axb5 axb5 20.Nb3 Qg5 21.Qd2 f4 22.Nc5 Qf6 23.Qd3 Rf7 24.Ra2 Kg7 25.Rae2 Nd8 26.Ra2 h5 27.Kh1 Kh6 28.Raa1 Kg7 29.Be2 Rb6 30.Rf1 Bb8 31.Rae1 Nc6 32.Bd1 Ne7 33.Bc2 Kh6 34.Ra1 Nf5 35.Nxf5+ exf5 36.Rfe1 fxg3 37.fxg3 f4 38.Re8 fxg3 39.Kg1 Qf2+ 40.Kh1 Qf6 41.Kg1 Qf2+ 42.Kh1 Bf5 43.Re2 Bxd3 44.Rxf2 gxf2 45.Bxd3 Re7 46.Rf1 Bg3 47.Nb3 Re1 48.Nc1 Rbe6 0-1
2019.08.05 23rd HZ Open 2019
2335171 Elgersma, Onno (2258) Le Clercq, Maxim (1970) 1-0
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.d3 d6 6.c3 Be7 7.O-O O-O 8.Re1 b5 9.Bc2 Bg4 10.Nbd2 d5 11.h3 Bh5 12.Qe2 Qd7 13.Nf1 d4 14.Ng3 Bxf3 15.Qxf3 dxc3 16.bxc3 b4 17.Ba4 g6 18.Bg5 Qd6 19.d4 exd4 20.Bxc6 Qxc6 21.cxd4 Rfe8 22.Rac1 Qb6 23.e5 Nd5 24.Bxe7 Nxe7 25.d5 Rad8 26.Red1 Qb7 27.Ne4 Rf8 28.d6 1-0
2019.08.04 23rd HZ Open 2019
2342726 GM L'Ami, E (2622) Elgersma, Onno (2258) 1-0
1.e4 c6 2.Nc3 d5 3.Nf3 dxe4 4.Nxe4 Nf6 5.Qe2 Nxe4 6.Qxe4 Qd5 7.Qf4 Qf5 8.Qe3 Qe6 9.b3 Qxe3+ 10.fxe3 c5 11.Bb2 Nc6 12.O-O-O Bf5 13.Bb5 Rc8 14.Rhf1 f6 15.Rde1 Bg6 16.e4 e5 17.g4 a6 18.Bc4 Nd4 19.Nh4 b5 20.Bd5 Rc7 21.Rf2 Kd8 22.Ref1 Be7 23.d3 Be8 24.c3 Nc6 25.Nf5 Bf8 26.Ne3 h6 27.h4 Be7 28.h5 Bf8 29.Be6 Ne7 30.c4 b4 31.Bxe5 fxe5 32.Rxf8 Rxf8 33.Rxf8 Nc6 34.Nd5 Rb7 35.Rg8 Nd4 36.Bf5 Nxf5 37.exf5 Rf7 38.Kd2 a5 39.Ke3 a4 40.bxa4 Ra7 41.f6 gxf6 42.Nxf6 1-0
2019.08.04 23rd HZ Open 2019
2335088 Elgersma, Onno (2258) Leentjens, G (1869) 1-0
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O b5 6.Bb3 Bb7 7.d3 Bc5 8.Nc3 d6 9.a3 h6 10.Nd5 Nd4 11.Nxd4 Bxd4 12.c3 Ba7 13.Nxf6+ Qxf6 14.Kh1 g5 15.a4 Bb6 16.Be3 c5 17.axb5 axb5 18.Rxa8+ Bxa8 19.Qg4 Bb7 20.Ra1 h5 21.Qxg5 Qxg5 22.Bxg5 c4 23.dxc4 Rg8 24.h4 Bxf2 25.Rf1 Bxh4 26.Bxh4 Rg4 27.Bf6 Bxe4 28.Rf2 bxc4 29.Bxc4 Bxg2+ 30.Rxg2 Rxc4 31.Rd2 Rf4 32.Rxd6 1-0
2019.08.03 23rd HZ Open 2019
2342708 Kunnavakkam, Sudarshanagopal Vin (1744) Elgersma, Onno (2258) 0-1
1.e4 c6 2.d4 d5 3.e5 Bf5 4.h4 h5 5.c4 e6 6.Nc3 Ne7 7.Bg5 Qb6 8.Qd2 Nd7 9.Nge2 dxc4 10.Ng3 Bd3 11.Bxd3 cxd3 12.Qxd3 Rd8 13.Qc4 Rc8 14.O-O Ng6 15.Rfe1 Qb4 16.Qd3 Nb6 17.f4 c5 18.f5 Qxd4+ 19.Qxd4 cxd4 20.Nb5 Rc5 21.Nxd4 exf5 22.e6 f6 23.Bd2 Rd5 24.Ngxf5 Bc5 25.Be3 O-O 26.Nb3 Bxe3+ 27.Nxe3 Re5 28.Nc2 Re8 29.Rxe5 Nxe5 30.Nc5 Nd5 31.Rd1 Nf4 32.Nxb7 Nxe6 33.Nd4 Nxd4 34.Rxd4 Kh7 35.Nd6 Rb8 36.Rd2 Ng4 37.Ne4 Re8 38.Re2 Kg6 39.Kf1 Rc8 40.Nc3 Ne5 41.Kf2 Kf5 42.Nb5 Rc1 43.Nd4+ Kg6 44.Ne6 Ng4+ 45.Kg3 Rd1 46.Nc5 Kf5 47.Kf3 Rf1+ 48.Kg3 g5 49.Nd3 Rh1 50.hxg5 fxg5 51.Nf2 h4+ 52.Kf3 Rf1 53.b3 Nxf2 54.Rxf2 g4+ 55.Ke3+ Rxf2 56.Kxf2 Ke4 57.Ke2 Kd4 58.b4 Ke5 0-1
2019.08.01 Dutch Open 2019
2345280 IM Lai, Hing Ting (2460) Elgersma, Onno (2232) 1/2-1/2
1.Nf3 Nf6 2.g3 d5 3.c4 e6 4.d4 Be7 5.Bg2 O-O 6.O-O dxc4 7.Ne5 Nc6 8.Nxc6 bxc6 9.Na3 Bxa3 10.bxa3 Ba6 11.Qd2 Rb8 12.Qa5 Qc8 13.a4 Rd8 14.e3 c5 15.Qxc5 Nd7 16.Qa5 c5 17.Rd1 Nf6 18.Ba3 cxd4 19.Be7 Rd7 20.Bxf6 gxf6 21.exd4 Bb7 22.Bxb7 Qxb7 23.Qc3 Qd5 24.Rac1 Rc8 25.Rb1 a6 26.Rb2 Rcd8 27.Rb4 Qh5 28.Rd2 e5 29.Rxc4 Qf5 30.Kg2 Qe4+ 31.Qf3 f5 32.Qxe4 1/2-1/2
2019.07.31 Dutch Open 2019
2345265 Elgersma, Onno (2232) Van Helvoort, R (2104) 1-0
1.e4 g6 2.d4 Bg7 3.Nf3 d6 4.Bc4 e6 5.O-O a6 6.a4 b6 7.Re1 Ne7 8.c3 h6 9.Nbd2 Nd7 10.Nf1 Bb7 11.Ng3 d5 12.exd5 Nxd5 13.Bd2 N7f6 14.Ne5 c5 15.dxc5 bxc5 16.Qe2 Qe7 17.a5 Nd7 18.Nxd7 Qxd7 19.Ne4 Qc7 20.Qf3 Qe7 21.Qg3 Rd8 22.Rad1 O-O 23.Be3 Nxe3 24.Qxe3 Bxe4 25.Qxe4 Qc7 26.Ra1 Rd2 27.Re2 Rd6 28.h4 h5 29.g3 Rfd8 30.Kg2 Kh7 31.Qf3 Kg8 32.Rc2 Kh7 33.Re2 Kg8 34.Ra2 Kh7 35.b3 Kg8 36.Rec2 Kh7 37.Qe2 Qb7+ 38.Qf3 Qc7 39.Be2 Qb8 40.Qxf7 R8d7 41.Qf3 Qxb3 42.Qe3 Qd5+ 43.Bf3 Bh6 44.Qe2 Qd3 45.Ra4 Qxe2 46.Rxe2 Bg7 47.Rc4 Rc7 48.Be4 Bf6 49.Rb2 Kg7 50.Rb7 Rxb7 51.Bxb7 Be7 52.Rxc5 Rd7 53.Bc8 Bxc5 54.Bxd7 Bd6 55.Bxe6 Bc7 56.Bc8 Bxa5 57.c4 Bb6 58.Bxa6 Kf6 59.Bb7 g5 60.hxg5+ Kxg5 61.f4+ Kg6 62.Kf3 Kf6 63.Bc6 Ke7 64.g4 hxg4+ 65.Kxg4 Kf6 66.Bb7 Bc5 67.Bc8 Bd6 68.Kf3 Ke7 69.Ke4 Kd8 70.Bh3 Ke7 71.f5 Bb4 72.Kd5 Bc3 73.Kc6 Bd4 74.c5 Be5 75.Kb7 Kd8 76.c6 Bd6 77.f6 Ke8 78.Be6 Kd8 79.f7 Ke7 80.Bd5 1-0
2019.07.29 Dutch Open 2019
2345225 Goswami, V (2046) Elgersma, Onno (2232) 1-0
1.d4 Nf6 2.Nf3 d5 3.e3 c5 4.c4 cxd4 5.exd4 g6 6.Nc3 Bg7 7.Qb3 O-O 8.cxd5 a5 9.Bb5 Na6 10.Bf4 Nb4 11.O-O Nbxd5 12.Be5 Nb6 13.Qa3 Be6 14.Ng5 Bc4 15.Rfe1 h6 16.Nf3 Bxb5 17.Nxb5 Qd7 18.Nc7 Rac8 19.Rac1 a4 20.Rc5 Rfd8 21.h3 Nbd5 22.Rec1 b6 23.R5c2 b5 24.b3 axb3 25.Qxb3 e6 26.Nxb5 Rxc2 27.Rxc2 Rc8 28.a4 Kh7 29.Rxc8 Qxc8 30.Nd6 Qc1+ 31.Kh2 Ne4 32.Nxe4 1-0
2019.07.27 Dutch Open 2019
2348487 Elgersma, Onno (2232) IM Bosboom, M (2418) 0-1
1.e4 d6 2.d4 Nf6 3.Nc3 e5 4.Nf3 Nbd7 5.Bc4 Be7 6.O-O O-O 7.Re1 a6 8.a4 b6 9.h3 Bb7 10.Qd3 c6 11.Ba2 b5 12.b4 a5 13.axb5 axb4 14.bxc6 Bxc6 15.Qc4 Rc8 16.Qxb4 Nxe4 17.Nxe4 Bxe4 18.dxe5 Bxf3 19.gxf3 dxe5 20.Qe4 Nf6 21.Qf5 Bb4 22.Rf1 g6 23.Qg5 Rxc2 24.Be3 Bc5 25.Bxc5 Rxc5 26.Rfc1 Rxc1+ 27.Rxc1 Qd6 28.Re1 Re8 29.Bb3 Kg7 30.Rd1 Qb4 31.Qe3 Re7 32.Kg2 Nh5 33.Rd5 Nf4+ 0-1
2019.07.26 Dutch Open 2019
2348474 De Jonge, Boris (2059) Elgersma, Onno (2232) 0-1
1.e4 c6 2.d4 d5 3.Nd2 dxe4 4.Nxe4 Nf6 5.Nxf6+ exf6 6.c3 Bd6 7.Bd3 O-O 8.Qc2 Re8+ 9.Ne2 h5 10.Be3 Nd7 11.O-O-O Nf8 12.Ng3 g6 13.Bh6 Be6 14.Kb1 b5 15.d5 Bxd5 16.Rhg1 Bxg3 17.hxg3 Qc8 18.Bxf8 Kxf8 19.f3 Kg7 20.Rh1 Qe6 21.b3 Rad8 22.Rh4 Qe3 23.g4 hxg4 24.Rxg4 Be6 25.Re4 Qg5 26.Rd4 Rxd4 27.cxd4 Bd5 28.Qd2 Qh4 29.Bc2 Qg3 30.Kb2 Rh8 31.Re1 Rh2 32.Re2 Qd6 33.a3 a5 34.Be4 Rh1 35.Bxd5 Qxd5 36.Qc3 a4 37.bxa4 bxa4 38.Qb4 c5 39.dxc5 Qd1 40.Qd2 Qb3# 0-1
2019.07.25 Dutch Open 2019
2348455 Elgersma, Onno (2232) Grutter, Tim (2091) 1/2-1/2
1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 5.Nc3 Qc7 6.Be3 a6 7.Qd2 Nf6 8.f4 Bb4 9.Bd3 Na5 10.a3 Bxc3 11.Qxc3 Qxc3+ 12.bxc3 d6 13.O-O Bd7 14.Nb3 Nxb3 15.cxb3 Bc6 16.e5 dxe5 17.fxe5 Nd5 18.Bd4 Rd8 19.Rad1 O-O 20.c4 Ne7 21.Bc5 Rd7 22.Bxh7+ Kxh7 23.Rxd7 Bxd7 24.Bxe7 Re8 25.Bd6 Kg6 26.Rf4 f6 27.Rg4+ Kf7 28.Rh4 Bc6 29.a4 Rd8 30.Rd4 Rh8 31.h4 Rh5 32.Rf4 Rf5 33.Rxf5 exf5 34.Kf2 Be4 35.exf6 Kxf6 36.b4 Bc2 37.a5 Bb3 38.c5 Bd5 39.Bf4 g6 40.g3 Bc6 41.Ke3 Ke6 42.Kd4 Bb5 43.Bg5 Bc6 44.Bd8 Bb5 45.Bb6 Bc6 46.Bc7 Bb5 47.Bd6 Bf1 48.Ke3 Kd5 49.Kf4 Be2 50.Bf8 Bd1 51.Kg5 Bh5 52.Kf6 Kc6 53.Ke6 Be2 54.Bg7 Bd1 55.Bc3 Be2 56.Be1 Bd1 57.Kf6 Bh5 58.Kg5 Kb5 59.g4 fxg4 60.Kf4 g3 61.Kxg3 Bd1 62.Kf4 Bc2 63.Kg5 Kc6 64.Kf6 Bb1 65.Ke7 Bc2 66.Kd8 Bf5 67.Bd2 Bg4 68.Be1 1/2-1/2
2019.07.14 Science Park Open A 2019
2364447 Elgersma, Onno (2232) Zwirs, Nico (2380) 0-1
1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 Qb6 5.Nb3 Nf6 6.Nc3 e6 7.Be3 Qc7 8.Bd3 Bb4 9.f4 d6 10.Qd2 Ne7 11.Bd4 e5 12.Bg1 d5 13.exd5 Nfxd5 14.Bb5+ Bd7 15.Bxd7+ Qxd7 16.O-O-O Qc7 17.fxe5 Nxc3 18.bxc3 Bxc3 19.Qd6 Bxe5 20.Qxc7 Bxc7 21.Bd4 f6 22.Rhe1 b6 23.Bb2 Rd8 24.Rxd8+ Bxd8 25.Nd4 Kf7 26.Ba3 Re8 27.Nb5 Nc8 28.Rd1 a6 29.Nc3 Be7 30.Bxe7 Rxe7 31.Rd8 Re8 32.Rd7+ Re7 33.Rd8 Rc7 34.Nd5 Rc5 35.Nb4 a5 36.Nd3 Rc7 37.Rh8 h6 38.Nf4 Ne7 39.Rb8 g5 40.Nh5 Nc8 41.g4 Ke6 42.Ng3 Kd7 43.Ra8 Rc4 44.Nf5 Rxg4 45.Nxh6 Rg1+ 46.Kb2 Kc7 0-1
2019.07.13 Science Park Open A 2019
2364438 Goes, S (2183) Elgersma, Onno (2232) 0-1
1.e4 c6 2.d4 d5 3.e5 Bf5 4.h4 h5 5.c4 e6 6.Nc3 Ne7 7.Nge2 Nd7 8.Ng3 Bg6 9.cxd5 cxd5 10.Bg5 Qb6 11.Bb5 Nc6 12.O-O Rc8 13.Rc1 a6 14.Bxc6 Rxc6 15.Nce2 f6 16.Rxc6 bxc6 17.Nf4 Bf7 18.Ngxh5 fxg5 19.hxg5 g6 20.g4 gxh5 21.gxh5 Rg8 22.Nh3 Bh6 23.f4 Nxe5 24.Kh1 Nc4 25.Re1 Nd6 26.g6 Ne4 27.Qg4 Qxd4 28.f5 exf5 29.Qxf5 Rf8 30.Qc8+ Ke7 31.Qc7+ Ke6 32.Qxc6+ Kf5 33.Rf1+ Kg4 34.Qd7+ Kg3 35.Qf5 Be6 36.Rf3+ Kh4 0-1
2019.07.12 Science Park Open A 2019
2364420 Elgersma, Onno (2232) GM Meskovs, N (2550) 0-1
1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.c4 Nb6 5.exd6 exd6 6.Bd3 Nc6 7.Ne2 Nb4 8.O-O Be7 9.Nbc3 Nxd3 10.Qxd3 O-O 11.b3 Re8 12.Nf4 c6 13.Re1 Bd7 14.Ba3 Bf8 15.Rxe8 Qxe8 16.Ne4 d5 17.Ng5 g6 18.Bxf8 Qxf8 19.cxd5 Qe7 20.Nf3 Nxd5 21.Nxd5 cxd5 22.Re1 Qb4 23.h3 Rc8 24.Qe3 Re8 25.Qd2 Rxe1+ 26.Qxe1 Qxe1+ 27.Nxe1 Bf5 28.Nf3 Bb1 29.a3 f6 30.h4 a5 31.Kh2 Bc2 32.Nd2 Kf7 33.g4 h6 34.Kg3 Ke6 35.Kf4 Bd1 36.f3 Kd6 37.Ke3 Kc6 38.Kd3 g5 39.hxg5 hxg5 40.Kc3 Be2 41.a4 b6 42.Kb2 Kd6 43.b4 Bd1 44.Ka3 Kc7 45.bxa5 bxa5 46.Kb2 Bxa4 47.Kc1 Bb5 48.Kd1 a4 49.Nb1 Bd3 50.Nc3 Bc4 51.Nb1 Kb6 52.Kd2 Ka5 53.Kc3 Be2 54.Nd2 Kb5 55.Kc2 Kb4 0-1
2019.07.11 Science Park Open A 2019
2364409 IM Bosboom, M (2418) Elgersma, Onno (2232) 1/2-1/2
1.c4 Nf6 2.Nf3 e6 3.g3 d5 4.Bg2 Be7 5.Qc2 c5 6.d3 Nc6 7.a3 O-O 8.O-O d4 9.b4 cxb4 10.axb4 Nxb4 11.Qb3 Nc6 12.Ba3 e5 13.Nbd2 Rb8 14.Rfb1 Bxa3 15.Qxa3 a6 16.Rb2 Qc7 17.Rab1 h6 18.Ne1 b6 19.Nc2 Rd8 20.Nb4 Nxb4 21.Rxb4 b5 22.h3 Bd7 23.Qxa6 bxc4 24.Nxc4 Be6 25.Rxb8 Rxb8 26.Rc1 Nd5 27.Kh2 Nc3 28.Rc2 Bxc4 29.dxc4 Rc8 30.Rd2 Qxc4 31.Qd6 Qc5 32.Qd7 Qc7 33.Qf5 Rd8 34.Rb2 Rb8 35.Rc2 g6 36.Qd3 Rd8 37.e3 Qb6 38.exd4 exd4 39.h4 h5 40.Qd2 Kg7 41.Bf3 Qf6 42.Kg2 Rd6 43.Qd3 Qe5 44.Rc1 Rf6 45.Ra1 Qf5 46.Qxf5 Rxf5 47.Ra7 Kf6 48.Rc7 Ke5 49.Rc5+ Ke6 50.Rc6+ Ke5 51.Rc5+ Ke6 52.Rc6+ Ke7 53.Rc7+ Kd8 54.Rc4 Nb5 55.Bc6 d3 1/2-1/2
2019.07.10 Science Park Open A 2019
2364401 Elgersma, Onno (2232) FM Van Baar, Esper (2108) 1-0
1.e4 c5 2.Nf3 d6 3.Bb5+ Nd7 4.d4 cxd4 5.Qxd4 a6 6.Bxd7+ Bxd7 7.Nc3 e5 8.Qd3 h6 9.Nd2 Nf6 10.Nc4 Be6 11.a4 Rc8 12.Ne3 Be7 13.O-O O-O 14.a5 Qc7 15.Rd1 Rfd8 16.Qe2 Qc5 17.Qf3 Re8 18.Bd2 Bd8 19.Nf5 Bxf5 20.Qxf5 Bxa5 21.Ra3 Bb4 22.Rb3 Re6 23.h4 a5 24.h5 Rc6 25.Qf3 Qc4 26.Nd5 Bxd2 27.Rxd2 Nxe4 28.Rxb7 Ng5 29.Qf5 Qa6 30.Rb8+ Rc8 31.Rxc8+ Qxc8 32.Ne7+ 1-0
2019.07.09 Science Park Open A 2019
2364384 GM Arnaudov, G (2478) Elgersma, Onno (2232) 1-0
1.Nf3 Nf6 2.c4 e6 3.e3 d5 4.b3 c5 5.Bb2 Nc6 6.cxd5 exd5 7.Bb5 Bd6 8.O-O O-O 9.d4 cxd4 10.Nxd4 a6 11.Be2 Re8 12.Nd2 Bd7 13.a3 Ne5 14.N4f3 Ng6 15.Ra2 Bf8 16.b4 Ne4 17.Ra1 Rc8 18.Rc1 Rxc1 19.Qxc1 Ba4 20.Bd3 Qd7 21.Qb1 Qe7 22.Bd4 Bc6 23.Rc1 Qd7 24.Nb3 Bd6 25.Qb2 f6 26.Qc2 Ba4 27.Qa2 Kh8 28.Nbd2 Bb8 29.Qb1 Bc6 30.a4 Qd6 31.g3 Qe6 32.b5 axb5 33.axb5 Bd7 34.b6 h5 35.Bf1 h4 36.Bg2 Bc6 37.Nb3 Bd7 38.Nc5 Nxc5 39.Qxg6 Nb3 40.Rb1 Nxd4 41.Qh5+ Kg8 42.Nxd4 Qe5 43.Bxd5+ 1-0
2019.07.08 Science Park Open A 2019
2364375 Elgersma, Onno (2232) FM Ballon, G (2089) 1-0
1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 a6 5.Qd3 Nc6 6.Nxc6 dxc6 7.Qg3 c5 8.a4 Bd7 9.Nc3 Ne7 10.Bg5 h6 11.Bxe7 Qxe7 12.Rd1 Bc6 13.h4 h5 14.Bc4 Rc8 15.O-O g6 16.Nd5 exd5 17.exd5 Qc7 18.Rfe1+ Kd7 19.Qh3+ Kd6 20.Qe6+ 1-0
2019.06.09 13th BPB Limburg Open
2383494 Elgersma, Onno (2173) GM Van Foreest, Lucas (2522) 0-1
1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 5.Nc3 Qc7 6.g3 a6 7.Bg2 Nf6 8.O-O h5 9.Nxc6 dxc6 10.Qe2 e5 11.h3 Be6 12.a4 a5 13.Nd1 Bc5 14.Ne3 g6 15.c3 h4 16.g4 Kf8 17.Bd2 Kg7 18.Kh1 Rhd8 19.f4 exf4 20.Rxf4 Rxd2 21.Qxd2 Rd8 22.Qf2 Qe5 23.Rf1 Bxe3 24.Qxe3 Nd5 25.Qd2 Nxf4 26.Qxd8 Nxg2 27.Qd2 Bc4 28.Qxg2 Bxf1 29.Qxf1 Qxe4+ 30.Kg1 Qxa4 31.Qf2 Qd1+ 32.Kg2 a4 33.Kh2 Qd6+ 34.Kh1 Qg3 35.Qf1 b5 0-1
2019.06.08 13th BPB Limburg Open
2383485 IM Leenhouts, K (2432) Elgersma, Onno (2173) 1/2-1/2
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qc2 O-O 5.Nf3 c5 6.dxc5 Na6 7.g3 Nxc5 8.Bg2 b6 9.O-O Bb7 10.Nb5 Be4 11.Qd1 Nb7 12.Bf4 Rc8 13.Rc1 a6 14.Nc3 Bxc3 15.Rxc3 d5 16.Qc1 d4 17.Ra3 b5 18.Be5 Rxc4 19.Qg5 h6 20.Bxf6 hxg5 21.Bxd8 Rxd8 22.Rxa6 Rc2 23.Nxg5 Bxg2 24.Kxg2 Rxe2 25.Rd1 e5 26.b3 g6 27.Kf1 Rc2 28.Ne4 Rdc8 29.Ra7 Nc5 30.Nd6 Rc6 31.Nxf7 Ne4 32.Nxe5 Rxf2+ 33.Kg1 Rcc2 34.Ra8+ Kg7 35.Ra7+ Kg8 1/2-1/2
2019.06.01 46th OKU 2019
2384791 GM Arnaudov, G (2482) Elgersma, Onno (2202) 1-0
1.e4 c6 2.d4 d5 3.e5 Bf5 4.h4 h5 5.Bg5 Qb6 6.Bd3 Bxd3 7.Qxd3 e6 8.Nd2 Qa6 9.c4 Nd7 10.Ngf3 Nh6 11.O-O Nf5 12.Qc3 dxc4 13.Nxc4 Nb6 14.Ne3 Ne7 15.Nd2 Ned5 16.Qb3 Qa4 17.Qd3 Rc8 18.Ne4 Qb5 19.Qc2 Nb4 20.Qd1 a5 21.a3 N4d5 22.Nc3 Qa6 23.Ncxd5 cxd5 24.Rc1 Rc6 25.Rxc6 bxc6 26.Qc2 Nd7 27.Rc1 Be7 28.Qxc6 Qxc6 29.Rxc6 Bxg5 30.hxg5 Ke7 31.b3 Rb8 32.Rc3 f6 33.gxf6+ gxf6 34.f4 fxe5 35.fxe5 Rb7 36.Nf1 Kf7 37.Nd2 Kg6 38.Kf2 Kf5 39.Rf3+ Kg6 40.Rg3+ Kh6 41.Rc3 Nf8 42.Rf3 Kg7 43.Ke2 Rc7 44.Kd3 Rc1 45.Rf1 Rc7 46.Nf3 Nh7 47.b4 axb4 48.axb4 Rb7 49.Kc3 Kg6 50.Kb3 1-0
2019.05.26 10th WLC Weekender 2019
2387118 Baselmans, Luuk (2270) Elgersma, Onno (2202) 1-0
1.e4 c6 2.d4 d5 3.exd5 cxd5 4.Bd3 Nc6 5.c3 Qc7 6.Ne2 Bg4 7.Qb3 Bxe2 8.Bxe2 e6 9.O-O Bd6 10.h3 Nge7 11.Nd2 O-O 12.Nf3 Rab8 13.a4 Ng6 14.Bd3 Nf4 15.Bxf4 Bxf4 16.Qc2 g6 17.g3 Bh6 18.Qe2 Rbe8 19.Rfe1 f6 20.Bb1 Qd7 21.Ba2 Kh8 22.Rad1 a6 23.h4 Nd8 24.a5 Qc7 25.h5 g5 26.Nh2 f5 27.c4 Qf7 28.cxd5 exd5 29.Qf3 Re4 30.g4 Qe7 31.Qc3 fxg4 32.Bxd5 Rxe1+ 33.Rxe1 Qd7 34.Bg2 Bg7 35.Re4 Rf4 36.Qe3 Rxe4 37.Qxe4 g3 38.Nf3 gxf2+ 39.Kxf2 Nf7 40.Bh3 Qd8 41.Qxb7 Nh6 42.Qc8 Qg8 43.Ne5 g4 44.Qxg8+ Kxg8 45.Bf1 g3+ 46.Kxg3 Nf5+ 47.Kf4 Nxd4 48.Bxa6 Ne6+ 49.Kf5 Nd4+ 50.Ke4 Bxe5 51.Kxe5 Nc6+ 52.Kd6 Nxa5 53.b4 Nb3 54.Bc4+ 1-0
2019.05.25 10th WLC Weekender 2019
2387092 GM Swinkels, R (2499) Elgersma, Onno (2202) 1-0
1.d4 Nf6 2.c4 e6 3.g3 d5 4.Nf3 Be7 5.Bg2 O-O 6.O-O dxc4 7.Qc2 a6 8.Qxc4 b5 9.Qc2 Bb7 10.Bd2 Be4 11.Qc1 c6 12.Rd1 Nbd7 13.Nc3 Bg6 14.Bg5 Rc8 15.a3 a5 16.Bh4 Nd5 17.Qd2 b4 18.axb4 axb4 19.Na4 Be4 20.Rdc1 f6 21.g4 Qe8 22.Bg3 h5 23.gxh5 Qxh5 24.Ne1 Bxg2 25.Nxg2 f5 26.f3 Bg5 27.Nf4 Bxf4 28.Bxf4 g5 29.Bd6 Rf6 30.Kh1 f4 31.Rg1 Kf7 32.Nc5 Rh8 33.Rg2 Rfh6 34.e4 Qxf3 35.Kg1 Nxc5 36.dxc5 Ne3 37.Rxg5 Rxh2 38.Ra7+ Ke8 39.Ra8+ Kf7 40.Ra7+ Ke8 41.Re7+ Kf8 42.Reg7+ Ke8 43.Re7+ Kf8 44.Rxe6+ Kf7 45.Re7+ Kf8 46.Reg7+ Ke8 47.Re5+ Kd8 48.Bc7+ Kc8 49.Qd7+ Kb7 50.Bd8+ Ka6 51.Qxc6# 1-0
2019.04.22 GRENKE Chess Open 2019
2401282 Abel, Tho (2336) Elgersma, Onno (2174) 1-0
1.d4 Nf6 2.c4 e6 3.Nf3 d5 4.g3 Be7 5.Bg2 O-O 6.O-O dxc4 7.Ne5 Nc6 8.Bxc6 bxc6 9.Nxc6 Qe8 10.Nxe7+ Qxe7 11.Qa4 e5 12.dxe5 Qxe5 13.Qxc4 Be6 14.Qc2 Bf5 15.Qc4 Be6 16.Qd3 Rad8 17.Qe3 Qh5 18.f3 Bc4 19.Nc3 Rfe8 20.Qf2 Nd5 21.g4 Qg6 22.Nxd5 Rxe2 23.Qxe2 Bxe2 24.Ne7+ 1-0
2019.04.22 GRENKE Chess Open 2019
2401167 Elgersma, Onno (2174) IM Thinius, M (2406) 0-1
1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 5.Nc3 Qc7 6.g3 a6 7.Bg2 Nge7 8.Nb3 Ne5 9.a4 b6 10.O-O Bb7 11.Qe2 Rc8 12.Rd1 N7g6 13.Nd4 Bb4 14.Bd2 Qc4 15.Be1 O-O 16.Kh1 Rfd8 17.Rab1 Qxe2 18.Ndxe2 Ne7 19.f4 Ng4 20.Rd3 Bc5 21.Bf3 Ne3 22.b4 Nxc2 23.bxc5 Nxe1 24.Rxe1 bxc5 25.Red1 Rc7 26.Bg2 f6 27.e5 Bxg2+ 28.Kxg2 c4 29.Rd4 Kf7 30.g4 fxe5 31.fxe5 Ng6 32.Rf1+ Ke7 33.Re4 Rc5 34.Nf4 Nxe5 35.h3 Rb8 36.Rd1 Rb2+ 37.Kf1 Nf3 38.Ncd5+ Kf7 39.Nxe6 dxe6 40.Rf4+ Ke8 41.Nc3 Nd2+ 42.Ke1 Re5+ 0-1
2019.04.21 GRENKE Chess Open 2019
2401093 IM Arnold, L (2351) Elgersma, Onno (2174) 0-1
1.e4 c6 2.d4 d5 3.e5 Bf5 4.Nf3 e6 5.Be2 Ne7 6.Nh4 Bg6 7.O-O c5 8.Nxg6 hxg6 9.c3 cxd4 10.cxd4 Nbc6 11.Be3 Nf5 12.Nd2 Nfxd4 13.Bxd4 Nxd4 14.Qa4+ Nc6 15.Bb5 Qb6 16.Rac1 Rc8 17.Rc3 Be7 18.Nf3 a6 19.Bxc6+ bxc6 20.Rfc1 O-O 21.Rb3 Qa7 22.Nd4 c5 23.Nc6 Qc7 24.Nxe7+ Qxe7 25.Rb6 Qg5 26.f4 Qg4 27.Rf1 Qe2 28.Qxa6 Qe3+ 29.Rf2 Ra8 30.Qe2 Qxe2 31.Rxe2 Rxa2 32.Kf2 Rc8 33.Rb7 Raa8 34.Rc2 Kf8 35.g3 Ke8 36.Ke3 Ra4 37.b3 Re4+ 38.Kf3 Kf8 39.Rb5 c4 40.bxc4 Rexc4 41.Rxc4 Rxc4 42.Rb8+ Ke7 43.Rb7+ Ke8 44.Rb8+ Kd7 45.Rg8 Rc3+ 46.Kg4 Ke7 47.h4 Re3 48.Ra8 f6 49.Ra7+ Kf8 50.Ra8+ Kf7 51.Ra7+ Kg8 52.Ra8+ Kh7 53.Re8 fxe5 54.Rxe6 e4 55.Rd6 Rd3 56.f5 gxf5+ 57.Kxf5 e3 58.Kf4 d4 59.Kf3 Rd2 60.Re6 Kg8 61.g4 Kf7 62.Re5 Rd1 63.Ke2 Rg1 64.Re4 Rg2+ 65.Ke1 Rd2 66.Kf1 Kf6 67.Ke1 g6 68.Kf1 g5 69.hxg5+ Kxg5 70.Ke1 Kh4 71.Kf1 Kg3 0-1
2019.04.19 GRENKE Chess Open 2019
2400648 FM Gschnitzer, Adrian (2380) Elgersma, Onno (2174) 1-0
1.e4 c6 2.d4 d5 3.e5 Bf5 4.Nf3 e6 5.Be2 Ne7 6.O-O c5 7.c4 Nbc6 8.dxc5 d4 9.Qa4 Qd7 10.Rd1 d3 11.Nc3 Ng6 12.g4 Ncxe5 13.Nb5 Rc8 14.gxf5 dxe2 15.Rxd7 Nxf3+ 16.Kg2 Nfh4+ 17.Kh3 e1=Q 18.Nc7+ Rxc7 19.Rxc7+ Kd8 20.Qd7# 1-0
2019.03.31 3rd ChessMates Paris 2019
2414400 Elgersma, Onno (2151) Murphy, Sean1 (1964) 1-0
1.e4 c5 2.Nf3 Nf6 3.Nc3 d5 4.exd5 Nxd5 5.Bb5+ Bd7 6.Bc4 Nb6 7.Be2 Nc6 8.O-O Bf5 9.Bb5 e6 10.Re1 Bd6 11.a4 a5 12.Ne4 O-O 13.Bxc6 bxc6 14.d3 Nd5 15.Nfd2 Bc7 16.Nc4 h6 17.Qf3 Qh4 18.g3 Qh3 19.Qg2 Qh5 20.f3 Bh3 21.Qe2 Qg6 22.Kh1 f5 23.Nf2 Qh5 24.f4 Bg4 25.Nxg4 fxg4 26.Qxe6+ Kh8 27.Bd2 Rf6 28.Qe2 Raf8 29.Rf1 g5 30.fxg5 hxg5 31.Rxf6 Rxf6 32.Re1 Kg7 33.Kg1 Rf3 34.Ne5 c4 35.d4 Bxe5 36.Qxe5+ Kh6 37.Qh8+ Kg6 38.Qxh5+ Kxh5 39.Re5 c3 40.bxc3 1-0
2019.03.30 3rd ChessMates Paris 2019
2414390 Lary, Damien (2083) Elgersma, Onno (2151) 1/2-1/2
1.Nf3 Nf6 2.g3 e6 3.Bg2 d5 4.c4 Be7 5.O-O O-O 6.b3 d4 7.e3 c5 8.exd4 cxd4 9.d3 Nc6 10.Bg5 e5 11.Bxf6 Bxf6 12.Na3 Re8 13.Nd2 g6 14.Nc2 a5 15.a3 Bg7 16.b4 axb4 17.axb4 Rxa1 18.Qxa1 Qe7 19.Rb1 f5 20.Qa2 Bh6 21.Nb3 Nxb4 22.Nxb4 Qxb4 23.Nxd4 Qe7 24.Bd5+ Kh8 25.Nb5 e4 26.Re1 Qb4 27.Re2 e3 28.fxe3 Rxe3 29.Rxe3 Bxe3+ 30.Kg2 Kg7 31.Qe2 f4 32.gxf4 Bxf4 33.Qf2 Qf8 34.Nd4 Qf6 35.Be6 Bxe6 36.Qxf4 Bd7 37.Kf3 Qe7 38.Qe4 Qf6+ 39.Ke2 b6 40.Kd2 h5 41.Kc3 Kh6 42.Kb3 Bg4 43.Qe3+ g5 44.Nb5 Bd1+ 45.Ka2 h4 46.d4 Qc6 47.Qd3 Qa8+ 48.Kb2 Qg2+ 49.Kc3 Be2 50.Qf5 Qc6 51.Na3 Qd6 52.Nc2 g4 53.Ne3 g3 54.hxg3 hxg3 55.Qh3+ Kg6 56.Qf5+ Kh6 57.Qe4 Qa3+ 58.Kd2 Qb2+ 59.Nc2 Bh5 60.Qf4+ Kh7 61.Qxg3 Bg6 62.Qh3+ Kg7 63.Qc3 Qb1 64.d5+ Kh7 65.Nd4 Qh1 66.Qf3 Qh2+ 67.Qe2 Qf4+ 68.Qe3 Qh2+ 69.Ne2 Qd6 70.Qh3+ Kg7 71.Qc3+ Kh7 72.Qh3+ Kg7 73.Qg4 Qb4+ 74.Ke3 Qc5+ 75.Qd4+ Qxd4+ 76.Kxd4 Kf6 77.Nc3 Be8 78.Ne4+ Ke7 79.Ke5 Ba4 80.Nd6 Kd7 81.Ne4 Bb3 82.Kd4 Kc7 83.Kc3 Bd1 84.Kb4 Bh5 85.Kb5 Be8+ 86.Ka6 Ba4 87.Nd2 Bc2 88.Kb5 Bg6 89.Nf3 Be8+ 90.Kb4 Kd6 91.Nd4 Bd7 92.Nb5+ Ke5 93.Na7 Kd6 94.Nb5+ Ke5 95.Nc7 Kd6 96.Na8 b5 97.cxb5 Bxb5 98.Nb6 Bc6 99.dxc6 Kxc6 1/2-1/2
2019.03.29 3rd ChessMates Paris 2019
2414350 Surkova, Sofya (1579) Elgersma, Onno (2151) 1-0
1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Nf6 5.Nxf6+ exf6 6.c3 Bd6 7.Bd3 O-O 8.Qc2 Re8+ 9.Ne2 h5 10.Be3 Be6 11.c4 Nd7 12.O-O-O Nf8 13.Nc3 Rc8 14.Kb1 Qa5 15.Qa4 Qxa4 16.Nxa4 h4 17.d5 cxd5 18.cxd5 Bxd5 19.Bc2 Bxg2 20.Rhg1 Be4 21.Bxe4 Rxe4 22.Rxd6 Rxa4 23.Rxf6 Ne6 24.Rf5 a6 25.Rd5 Rac4 26.h3 R8c7 27.b3 Re4 28.Kb2 Nf4 29.Rd8+ Kh7 30.Rg4 Ne6 31.Rxe4 Nxd8 32.Rxh4+ Kg8 33.Bb6 Rd7 34.Bxd8 Rxd8 35.Kc2 Rd5 36.Rf4 Rh5 37.Rf3 Rh4 38.Kd2 g6 39.Ke2 Kg7 40.Kd2 g5 41.Ke2 Kg6 42.a3 f6 43.b4 f5 44.Ke1 Kf6 45.Kf1 Ke5 46.Kg2 Rh7 47.Rg3 Kf6 48.Rd3 Rc7 49.Re3 Rc4 50.Rd3 Rc7 51.Re3 f4 52.Rd3 Kf5 53.Kf3 Rh7 54.Kg2 Ke4 55.Rc3 Rg7 56.Rb3 g4 1-0
2019.03.29 3rd ChessMates Paris 2019
2414331 Elgersma, Onno (2151) Ahluwalia, Amardip (2207) 1/2-1/2
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O b5 6.Bb3 Bc5 7.a4 Rb8 8.c3 d6 9.d4 Bb6 10.a5 Ba7 11.h3 h6 12.Be3 Ra8 13.Nbd2 O-O 14.Re1 Re8 15.Nf1 Bd7 16.Ng3 exd4 17.cxd4 Ne7 18.Qd2 Ng6 19.Bxh6 gxh6 20.Qxh6 Re6 21.Bxe6 Bxe6 22.d5 Bd7 23.e5 dxe5 24.Nxe5 Qf8 25.Qg5 Qg7 26.Nxd7 Nxd7 27.Nf5 Qf6 28.Ne7+ Kg7 29.Nf5+ Kg8 30.Ne7+ 1/2-1/2
2019.02.22 79th Noteboom Open
2425888 Cchung, Chi Yun (1840) Elgersma, Onno (2134) 0-1
1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Nf6 5.Nxf6+ exf6 6.c3 Bd6 7.Bd3 O-O 8.Ne2 Re8 9.O-O Qc7 10.g3 Bh3 11.Re1 Bg4 12.Qc2 h6 13.Bf4 g5 14.Bxd6 Qxd6 15.Bc4 Be6 16.Nc1 Kg7 17.Nd3 Nd7 18.Bb3 Bf5 19.Qd1 a5 20.Qf3 Bg6 21.Rxe8 Rxe8 22.Re1 Rxe1+ 23.Nxe1 b5 24.Ng2 a4 25.Bd1 c5 26.dxc5 Nxc5 27.Ne3 Nd3 28.b3 Qe5 29.c4 bxc4 30.Nxc4 Qe1+ 31.Kg2 Be4 0-1
2018.12.30 56th Groningen Open 2018
2449920 Maters, Arthur (2005) Elgersma, Onno (2192) 0-1
1.d4 Nf6 2.Bg5 Ne4 3.Bf4 c5 4.d5 Qb6 5.Bc1 g6 6.f3 Nf6 7.e4 d6 8.c4 Bg7 9.Ne2 O-O 10.Nec3 e6 11.Na3 a6 12.Nc2 Nbd7 13.a4 Re8 14.Be2 Rb8 15.Bd2 Qc7 16.Qc1 exd5 17.cxd5 c4 18.Na3 Ne5 19.Bf4 Nfd7 20.Qe3 f5 21.h4 fxe4 22.fxe4 Nc5 23.O-O-O Ned3+ 24.Bxd3 Nxd3+ 25.Rxd3 cxd3 26.Qxd3 Rf8 27.Qg3 Rxf4 28.Qxf4 b5 29.Kb1 b4 30.Nab5 axb5 31.Nxb5 Qe7 32.Nxd6 Be5 33.Nxc8 Rxc8 34.Qg4 Qc7 35.Qe2 b3 36.Rf1 Qc2+ 37.Qxc2 bxc2+ 38.Kc1 Bg7 39.g4 Be5 40.Rf3 Bxb2+ 0-1
2018.12.29 56th Groningen Open 2018
2449908 Elgersma, Onno (2192) Zwirs, Jasper (2127) 1-0
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.g3 e6 7.Bg2 Be7 8.O-O O-O 9.a4 Qc7 10.Kh1 Bd7 11.f4 Nc6 12.Nxc6 Bxc6 13.a5 b5 14.axb6 Qxb6 15.Qe2 Qb7 16.f5 exf5 17.Rxf5 Nd7 18.Nd5 Ne5 19.Nxe7+ Qxe7 20.Rxa6 Rxa6 21.Qxa6 Ra8 22.Qb6 h6 23.Rf1 Ra1 24.Qd4 Ra4 25.b4 Ra2 26.Bb2 Qb7 27.Ra1 Rxb2 28.Qxb2 Bxe4 29.c3 Ng4 30.Qe2 Bxg2+ 31.Qxg2 Qb6 32.Ra8+ Kh7 33.h3 Ne5 34.Qe4+ g6 35.Ra2 Qb5 36.Kg2 h5 37.Rd2 Qd7 1-0
2018.12.28 56th Groningen Open 2018
2457408 De Boer, Bas (2134) Elgersma, Onno (2192) 0-1
1.Nf3 Nf6 2.c4 e6 3.Nc3 d5 4.e3 c5 5.d4 dxc4 6.Bxc4 a6 7.O-O b5 8.Bb3 Bb7 9.Qe2 Nbd7 10.Rd1 Qc7 11.h3 Bd6 12.a3 O-O 13.e4 cxd4 14.Nxd4 Nc5 15.Bc2 Be5 16.Qe3 Rfd8 17.f4 Bxd4 18.Rxd4 Rxd4 19.Qxd4 Rd8 20.Qe3 Qc6 21.Qe2 Ncxe4 22.Nxe4 Nxe4 23.Be3 h6 24.Rc1 Ba8 25.Qg4 Qb7 26.f5 exf5 27.Qxf5 Nf6 28.Qf2 Re8 29.Bd4 Ne4 30.Qf3 Qd7 31.Rd1 Ng5 32.Qf2 Nxh3+ 33.gxh3 Qxh3 34.Qh2 Qxh2+ 35.Kxh2 Re2+ 36.Kg3 Rxc2 37.Bc3 Be4 38.Kf4 Re2 39.Rd6 f6 40.Rxa6 g5+ 41.Kg3 Kg7 42.Rxf6 Kh7 43.Rd6 Rg2+ 44.Kh3 h5 45.Rd7+ Kg6 46.Rd6+ Kf7 47.Rf6+ Ke7 48.Rb6 h4 49.Rxb5 Rg3+ 50.Kh2 Kf7 51.Rb6 Rg2+ 52.Kh1 Bf3 53.Rf6+ 0-1
2018.12.27 56th Groningen Open 2018
2457375 Elgersma, Onno (2192) Keuning, Selwin (2013) 0-1
1.e4 c5 2.Nf3 g6 3.c3 Nc6 4.d4 d5 5.e5 cxd4 6.cxd4 Bg4 7.Bb5 Qb6 8.Bxc6+ bxc6 9.Nbd2 f6 10.Qa4 Bd7 11.exf6 exf6 12.O-O Bd6 13.Qc2 Ne7 14.Nb3 Kf7 15.Be3 Rae8 16.Ne5+ Bxe5 17.dxe5 Qc7 18.exf6 Nf5 19.Bc5 Qf4 20.Bxa7 Re5 21.Qc1 Qxc1 22.Rfxc1 Ra8 23.Bd4 Nxd4 24.Nxd4 Re4 25.Rd1 Kxf6 26.f3 Re5 27.Kf2 c5 28.Ne2 d4 29.Rd2 Bb5 30.Ng3 Bc6 31.a3 h5 32.h4 Rb8 33.Rc1 Rb3 34.Ne2 Bb5 35.Ng3 Bc6 36.Re1 Rbe3 37.Ree2 Rxe2+ 38.Rxe2 c4 39.f4 Rb5 40.Nf1 c3 41.bxc3 dxc3 42.Ne3 Rb2 43.g3 Bb5 44.Nd5+ Kf5 45.Ne3+ Ke6 46.Rc2 Bd3 0-1
2018.12.26 56th Groningen Open 2018
2457346 Van Foreest, Machteld (1925) Elgersma, Onno (2192) 1-0
1.e4 e6 2.d4 d5 3.Nd2 c5 4.exd5 Qxd5 5.dxc5 Bxc5 6.Ngf3 Nf6 7.Bd3 Nc6 8.Nb3 Bb6 9.Qe2 Nb4 10.Bb5+ Bd7 11.Bxd7+ Qxd7 12.a3 Nc6 13.Be3 Bxe3 14.Qxe3 Nd5 15.Qe4 Qc7 16.O-O O-O 17.Rad1 Rad8 18.Rfe1 Nf6 19.Qe2 e5 20.h3 Rxd1 21.Rxd1 Re8 22.Qc4 h6 23.Re1 a6 24.Nbd2 Qb6 25.Qb3 Qxb3 26.Nxb3 Kf8 27.Kf1 Re7 28.Nfd2 Ke8 29.c3 Kd7 30.Nc4 Kc7 31.Nc5 Nd5 32.Rd1 Nf6 33.Nd6 Kb6 34.b4 Rc7 35.Na4+ Ka7 36.b5 axb5 37.Nxb5+ Kb8 38.Nxc7 Kxc7 39.Nc5 Na5 40.Re1 Nc4 41.a4 Nd5 42.g3 b6 43.Nd3 Kd6 44.Rc1 Nd2+ 45.Ke1 Nb3 46.Rc2 f6 47.c4 Nd4 48.Rb2 Nc3 49.Rxb6+ Kc7 50.a5 Nf3+ 51.Kf1 Nd2+ 52.Kg2 Nxc4 53.Rb3 Nd5 54.Rb5 Kd6 55.Rc5 Nd2 56.a6 Nb6 57.a7 e4 58.Nb2 e3 59.fxe3 Kxc5 60.Na4+ Nxa4 61.a8=Q Nc3 62.Qa7+ 1-0
2018.12.24 56th Groningen Open 2018
2457314 Elgersma, Onno (2192) FM Pel, B (2279) 0-1
1.e4 d6 2.d4 g6 3.Nf3 Bg7 4.Be2 Nf6 5.Nc3 O-O 6.O-O a6 7.a4 b6 8.Re1 e6 9.h3 Bb7 10.Bf1 h6 11.Bf4 Kh7 12.Bh2 Nc6 13.Qd2 Ne7 14.Rad1 Qd7 15.Qe3 Rad8 16.b4 Qc8 17.b5 a5 18.Bc4 d5 19.exd5 Nfxd5 20.Nxd5 Nxd5 21.Qb3 Ne7 22.Ne5 Qa8 23.Bf1 Nf5 24.Qc3 Qc8 25.Rd2 Ne7 26.Qd3 Nf5 27.Qb3 h5 28.c3 Qa8 29.Nc4 Rd7 30.Ne5 Re7 31.f3 Qd8 32.Kh1 Bh6 33.Rde2 Bd5 34.Nc6 Bxc6 35.bxc6 Ree8 36.Re4 h4 37.Bd3 Bg5 38.Re5 Bf6 39.R5e2 Ne7 40.Qb5 Nd5 41.Rc2 Be7 42.Rcc1 Ba3 43.c4 Bxc1 44.Rxc1 Ne7 45.Qe5 Nxc6 46.Qb5 Qxd4 47.Be4 Qd2 48.Qxc6 Qxc1+ 49.Bg1 Rd8 50.Qxc7 Rd1 51.Qxb6 f5 52.Qa7+ Kg8 53.Bc6 Rfd8 54.Kh2 Rxg1 55.Qxg1 Rd1 56.Qf2 Rh1# 0-1
2018.12.23 56th Groningen Open 2018
2457255 Elgersma, Onno (2192) GM Krasenkow, M (2630) 0-1
1.e4 g6 2.d4 Bg7 3.Nf3 d6 4.Nc3 Nf6 5.Be2 O-O 6.O-O Bg4 7.Be3 Nc6 8.d5 Bxf3 9.Bxf3 Ne5 10.Be2 c6 11.a4 Qa5 12.Qd2 Rfc8 13.f4 Neg4 14.Bxg4 Nxg4 15.Bd4 cxd5 16.exd5 Rc4 17.Bxg7 Kxg7 18.Kh1 Rac8 19.Qe2 Nf6 20.Qxe7 Qb4 21.Nb5 Re4 22.Qxd6 Rxc2 23.Qxb4 Rxb4 24.b3 Nxd5 25.f5 g5 26.Rf3 g4 27.Rg3 a6 28.Nd6 h5 29.h3 Nf6 30.hxg4 Nxg4 31.f6+ Kg6 32.Nc4 Kxf6 33.Rf1+ Kg5 34.Ne5 f5 35.Rgf3 f4 36.Nf7+ Kg6 37.Nd6 Rb2 38.Nc4 R2xb3 39.Rxf4 Rxc4 40.Rxc4 Ne3 41.Rfc1 Nxc4 42.Rxc4 a5 43.Rc5 b6 44.Rd5 h4 45.Kh2 Kf7 46.Rh5 Rb4 47.Rh6 Ke7 48.Kh3 Kd7 49.Rh7+ Kc6 50.Rh6+ Kb7 51.Rh7+ Ka6 52.Rxh4 Rxh4+ 53.Kxh4 b5 54.axb5+ Kxb5 55.g4 a4 56.g5 a3 57.g6 a2 58.Kh5 a1=Q 59.Kh6 Qh8+ 0-1
2018.12.23 56th Groningen Open 2018
2457291 Van de Pavoordt, Max (2042) Elgersma, Onno (2192) 0-1
1.Nf3 Nf6 2.d4 e6 3.c3 c5 4.Bg5 d5 5.e3 Nc6 6.Nbd2 Bd6 7.Bd3 O-O 8.Bb1 h6 9.Bh4 Re8 10.dxc5 Bxc5 11.O-O e5 12.Nb3 Be7 13.h3 Be6 14.Qc2 g6 15.Bxf6 Bxf6 16.Nc5 Qe7 17.Nxe6 Qxe6 18.a4 Rad8 19.Ba2 Qe7 20.Rad1 e4 21.Nd4 Nxd4 22.cxd4 Qb4 23.Qb3 a5 24.Rc1 b6 25.Rc3 0-1
2018.12.22 56th Groningen Open 2018
2457221 IM Beerdsen, Thomas (2477) Elgersma, Onno (2192) 1/2-1/2
1.e4 e6 2.b3 d5 3.Bb2 c5 4.Nf3 dxe4 5.Ne5 Nd7 6.Bb5 Nf6 7.Na3 Qc7 8.O-O a6 9.Bxd7+ Bxd7 10.Qe2 Bc6 11.Nac4 Bd5 12.a4 b6 13.Qe3 Rc8 14.Rae1 b5 15.axb5 axb5 16.Na3 Rb8 17.Qg5 h6 18.Qg3 h5 19.d3 h4 20.Qh3 exd3 21.Nxd3 c4 22.Ne5 c3 23.Bc1 Bd6 24.Nd3 Ne4 25.Re2 Bxa3 26.Bxa3 Ng5 27.Qe3 h3 28.f3 hxg2 29.Rxg2 Nh3+ 30.Kh1 Rh7 31.Bc5 g5 32.Nb4 Nf4 33.Rxg5 f6 34.Na6 Rxh2+ 35.Kxh2 Qh7+ 36.Kg1 fxg5 37.Nxb8 Qxc2 38.Rf2 Qb1+ 39.Rf1 Qc2 40.Rf2 Qb1+ 41.Rf1 Qc2 1/2-1/2
2018.10.27 22nd Hoogeveen Open 2018
2483070 Elgersma, Onno (2223) Vroombout, E (2132) 1/2-1/2
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.h3 g6 7.g4 Bg7 8.Be3 O-O 9.Qd2 b5 10.Bg2 Bb7 11.O-O Qc7 12.a4 e5 13.Nde2 b4 14.Nd5 Bxd5 15.exd5 Nbd7 16.a5 Rfc8 17.Rfc1 Qc4 18.Ra4 Rab8 19.c3 Qb5 20.Rxb4 Qxa5 21.g5 Ne8 22.Rxb8 Rxb8 23.b4 Qa4 24.Qb2 a5 25.Ra1 Qb5 26.Rb1 Qc4 27.Ng3 f5 28.gxf6 Nexf6 29.Qb3 Qxb3 30.Rxb3 axb4 31.cxb4 Rb5 32.Ne4 Nxe4 33.Bxe4 Nc5 34.Bxc5 dxc5 35.d6 Rxb4 36.d7 Bf6 37.Bd5+ Kg7 38.Rc3 Rb5 39.Bc6 Ra5 40.Rf3 Ra1+ 41.Kg2 Rd1 42.Rc3 Be7 43.Ra3 Rd6 44.Bb5 Kf6 45.Ra8 Kf5 46.Re8 Bh4 47.Rc8 Rd2 48.Rf8+ Ke6 49.Re8+ Kf7 50.Rxe5 Rxf2+ 51.Kh1 Rc2 52.Rd5 Bd8 53.Re5 Be7 1/2-1/2
2018.10.26 22nd Hoogeveen Open 2018
2483039 Jelic, B (2076) Elgersma, Onno (2223) 0-1
1.d4 Nf6 2.c4 e6 3.Nf3 d5 4.cxd5 exd5 5.Bg5 c6 6.Nc3 Be7 7.Qc2 O-O 8.e3 Nbd7 9.Bd3 Re8 10.O-O h6 11.Bh4 Ne4 12.Bxe7 Qxe7 13.Rab1 a5 14.Bxe4 dxe4 15.Nd2 Nf6 16.Nc4 Bf5 17.f4 b5 18.Ne5 Rac8 19.Qe2 h5 20.h3 h4 21.Rbc1 Kh7 22.Rc2 Rg8 23.Nb1 g5 24.fxg5 Rxg5 25.Nxc6 Qe6 26.Qxb5 Nd5 27.Re1 Bxh3 28.Qf1 Rxc6 29.Rxc6 Qxc6 30.Qxf7+ Rg7 31.Qh5+ Kg8 32.Re2 Bg4 0-1
2018.10.25 22nd Hoogeveen Open 2018
2482999 Elgersma, Onno (2223) Boersma, J (2047) 0-1
1.e4 c5 2.Nf3 g6 3.c4 Nc6 4.d4 cxd4 5.Nxd4 Nf6 6.Nc3 d6 7.Be2 Nxd4 8.Qxd4 Bg7 9.Be3 O-O 10.Qd2 Be6 11.f3 Rc8 12.Nd5 Bxd5 13.exd5 Nd7 14.O-O a5 15.Rab1 Nc5 16.b3 b6 17.Rfc1 Qd7 18.Bf1 Qf5 19.Re1 Rfe8 20.a3 Ra8 21.Kh1 Be5 22.Be2 h5 23.Rec1 a4 24.f4 Bg7 25.Bxc5 bxc5 26.Rf1 axb3 27.Rxb3 Reb8 28.Qd1 Bd4 29.Bd3 Qf6 30.f5 Rxb3 31.Qxb3 g5 32.Re1 Kg7 33.a4 g4 34.Qd1 Qh4 35.g3 Qg5 36.Re4 Rxa4 37.Bb1 Rb4 38.Bc2 Rxc4 39.f6+ exf6 40.Kg2 Qxd5 0-1
2018.10.24 22nd Hoogeveen Open 2018
2482950 WIM Tomilova, E (2328) Elgersma, Onno (2223) 1-0
1.Nf3 Nf6 2.c4 e6 3.g3 d5 4.b3 c5 5.Bg2 Be7 6.O-O O-O 7.Bb2 Nc6 8.e3 b6 9.Nc3 Ba6 10.d3 Qd7 11.Qe2 Rfd8 12.Rad1 Rac8 13.h3 Qe8 14.g4 h6 15.g5 hxg5 16.Nxg5 d4 17.Nb1 g6 18.h4 Nh5 19.Nd2 Bf8 20.Nde4 f6 21.Qxh5 fxg5 22.Qxg5 Bg7 23.h5 Kh7 24.Nf6+ Bxf6 25.Qxf6 Rc7 26.Be4 1-0
2018.10.23 22nd Hoogeveen Open 2018
2482904 Elgersma, Onno (2223) WIM Blagojevic, Tijana (2232) 0-1
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.h3 e5 7.Nde2 h5 8.Bg5 Be6 9.Bxf6 Qxf6 10.Nd5 Qd8 11.Nec3 g6 12.Bc4 Bh6 13.O-O O-O 14.a4 Nc6 15.Ba2 Rc8 16.Kh1 Qh4 17.Qd3 Qd8 18.b4 Nd4 19.a5 Bxd5 20.Bxd5 Qc7 21.Ra3 Kh8 22.Rb1 Qe7 23.b5 axb5 24.Nxb5 Rxc2 25.Nxd4 Rd2 26.Qf3 exd4 27.Rxb7 Qe5 28.Rxf7 Rxf7 29.Bxf7 Rc2 30.g3 Rc3 31.Rxc3 dxc3 32.Qd3 Qc5 33.Bb3 Qxf2 34.Qxc3+ Bg7 35.Qd3 Bd4 36.Qd1 h4 37.gxh4 Be5 38.Qg1 Qf3+ 39.Qg2 Qxb3 40.Qxg6 Qxh3+ 41.Kg1 Bd4# 0-1
2018.10.22 22nd Hoogeveen Open 2018
2487668 Elgersma, Onno (2223) Ojas, Kulkarni (2254) 1/2-1/2
1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.c4 Nb6 5.exd6 exd6 6.Nc3 Be7 7.Bd3 Nc6 8.Nge2 Bg4 9.Be3 Bh5 10.O-O O-O 11.b3 Re8 12.Qd2 Bg6 13.Nf4 Bxd3 14.Qxd3 Qd7 15.Rad1 Bf8 16.c5 Nc8 17.Ncd5 N8e7 18.Qb5 Nxd5 19.Nxd5 a6 20.Qc4 Ne7 21.cxd6 Nxd5 22.Qxd5 Rab8 23.Bf4 Bxd6 24.Rfe1 Rxe1+ 25.Rxe1 Re8 26.Rxe8+ Qxe8 27.Be5 Bf8 28.h3 c6 29.Qc4 Qd7 30.a4 b5 31.Qc3 Qd5 32.Bc7 1/2-1/2
2018.10.22 22nd Hoogeveen Open 2018
2487704 FM Colijn, S (2340) Elgersma, Onno (2223) 0-1
1.d4 Nf6 2.Nf3 e6 3.Bf4 d5 4.e3 c5 5.c3 Nc6 6.Bd3 Be7 7.h3 Bd6 8.dxc5 Bxc5 9.Nbd2 O-O 10.e4 e5 11.Bg5 Be6 12.O-O a5 13.Qe2 h6 14.Bxf6 Qxf6 15.exd5 Bxd5 16.Ne4 Qe7 17.Bc4 Bxe4 18.Qxe4 Kh8 19.Bd5 f5 20.Qh4 Rf6 21.Qh5 e4 22.Nh4 Qe8 23.Qxe8+ Rxe8 24.g4 fxg4 25.hxg4 Ne5 26.Bxe4 Nxg4 27.Bf5 Ne5 28.Kh1 g5 29.f4 Nc4 30.fxg5 hxg5 31.Bd3 Rh6 32.Kg2 0-1
2018.10.21 22nd Hoogeveen Open 2018
2487630 FM Buckels, Valentin (2413) Elgersma, Onno (2223) 1/2-1/2
1.Nf3 Nf6 2.g3 e6 3.Bg2 d5 4.O-O Be7 5.c4 O-O 6.b3 c5 7.Bb2 b6 8.cxd5 Nxd5 9.d4 Bb7 10.e4 Nf6 11.Nbd2 Nxe4 12.Ne5 Nd6 13.dxc5 bxc5 14.Qg4 f5 15.Qe2 Bxg2 16.Kxg2 Qc8 17.Rac1 Bf6 18.Ba3 Na6 19.Nd3 Nb5 20.Nxc5 Nac7 21.Nb1 Nd4 22.Qc4 Nd5 23.Qa6 Qe8 24.Rcd1 Nf4+ 25.gxf4 Qg6+ 26.Kh1 Nf3 27.h3 Qh5 28.Kg2 Nh4+ 29.Kh2 Qf3 30.Qb7 Qxf4+ 31.Kg1 Nf3+ 32.Kg2 Nh4+ 33.Kg1 Nf3+ 34.Kg2 Nh4+ 1/2-1/2
2018.10.20 22nd Hoogeveen Open 2018
2487611 Elgersma, Onno (2223) Brands, Kevin (1862) 1-0
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.h3 Bd7 7.g4 h6 8.Bg2 g6 9.Be3 Bg7 10.Qd2 Nc6 11.f4 Nxd4 12.Bxd4 e5 13.Be3 O-O 14.f5 Bc6 15.O-O-O Qa5 16.Bxh6 Rac8 17.Kb1 Bxh6 18.Qxh6 b5 19.g5 Nh5 20.fxg6 1-0
2018.08.11 22nd HZ Open 2018
2525094 Reichardt, Gert (1977) Elgersma, Onno (2171) 0-1
1.e4 e6 2.d4 d5 3.exd5 exd5 4.Nf3 Nf6 5.Bd3 Bd6 6.Bg5 O-O 7.O-O c5 8.c3 Nc6 9.dxc5 Bxc5 10.Nbd2 Bg4 11.Qc2 h6 12.Bh4 Qd6 13.Rae1 Rfe8 14.Bf5 Bxf5 15.Qxf5 Ne7 16.Qd3 Rad8 17.Nb3 Bb6 18.Nbd4 Ne4 19.Nd2 Bxd4 20.cxd4 g5 21.Bg3 Qg6 22.Nxe4 dxe4 23.Qxe4 Qxe4 24.Rxe4 f5 25.Re6 f4 26.Rd1 Kf7 27.Rxh6 Nf5 0-1
2018.08.10 22nd HZ Open 2018
2525048 Elgersma, Onno (2171) Van Rij, G (1968) 1-0
1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.e5 Ne7 5.a3 Bxc3+ 6.bxc3 c5 7.a4 Qa5 8.Bd2 Qc7 9.Nf3 Nbc6 10.Bd3 Bd7 11.O-O c4 12.Be2 O-O 13.Nh4 f5 14.f4 Be8 15.Bc1 Ng6 16.Nf3 Kh8 17.Qe1 Nd8 18.Ba3 Rg8 19.Ng5 Qd7 20.Bb4 Nf7 21.Nxf7+ Bxf7 22.Rf3 Rgc8 23.h3 Qd8 24.Rf1 Qh4 25.Qxh4 Nxh4 26.Kh2 Rc7 27.g4 Ng6 28.gxf5 exf5 29.Kg3 b6 30.Rg1 Kg8 31.Kf3 Nf8 32.Ke3 Be6 33.Bf3 Kf7 34.Rg3 g6 35.h4 Kg8 36.Rag1 Rg7 37.h5 Rd8 38.Bxf8 Kxf8 39.hxg6 hxg6 40.Rxg6 Rxg6 41.Rxg6 Kf7 42.Rh6 Rg8 43.Bh5+ 1-0
2018.08.09 22nd HZ Open 2018
2524980 GM Sandipan, C (2554) Elgersma, Onno (2171) 1-0
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Bd2 b6 6.Nf3 Bb7 7.Bd3 d6 8.O-O Nbd7 9.b3 Qe7 10.a3 Bxc3 11.Bxc3 Ne4 12.Bb2 f5 13.Nd2 Nxd2 14.Qxd2 Rf6 15.f3 Re8 16.b4 e5 17.d5 Ref8 18.a4 Qf7 19.a5 f4 20.axb6 axb6 21.Ra7 Rb8 22.exf4 Rxf4 23.Qe2 b5 24.Bc1 bxc4 25.Be4 Nb6 26.Bxf4 exf4 27.Re1 g6 28.Bb1 Bxd5 29.Qe7 Qxe7 30.Rxe7 Nc8 31.Re8+ Kf7 32.Rh8 Nxa7 33.Rxb8 Nc6 34.Rb7 Ke7 35.b5 Nd4 36.Rxc7+ Kd8 37.b6 c3 38.Rxh7 Kc8 39.Bxg6 Kb8 40.h4 c2 41.Bxc2 Nxc2 42.h5 Bc4 43.h6 Bd3 44.Rd7 Ne3 45.Rxd6 Bc2 46.Rd7 Nc4 47.Rc7 1-0
2018.08.08 22nd HZ Open 2018
2524950 Van Diermen, A (1922) Elgersma, Onno (2171) 1-0
1.e4 e6 2.d4 d5 3.exd5 exd5 4.c4 Bb4+ 5.Nc3 Nf6 6.a3 Bxc3+ 7.bxc3 O-O 8.Bg5 Re8+ 9.Be2 dxc4 10.Nf3 Qd6 11.Bxf6 Qxf6 12.O-O Nd7 13.Bxc4 Nb6 14.Ne5 Nxc4 15.Nxc4 b6 16.Re1 Rxe1+ 17.Qxe1 Bb7 18.Ne3 Re8 19.Qd2 Qg5 20.d5 f5 21.Rd1 Rd8 22.c4 f4 23.Nc2 c5 24.Ne1 Qf6 25.Nd3 g5 26.Qb2 Qxb2 27.Nxb2 Re8 28.Kf1 Kf7 29.Re1 Rxe1+ 30.Kxe1 Kf6 31.Nd3 Ba6 32.Nb2 Ke5 33.Kd2 Kd4 34.d6 Bc8 35.Nd3 a6 36.h4 h6 37.hxg5 hxg5 38.f3 Bd7 39.Ke2 b5 40.cxb5 axb5 41.Kd2 Kd5 42.Nf2 Kxd6 43.Ne4+ Kd5 44.Kc3 Bf5 45.Nxg5 Ke5 46.Nf7+ Ke6 47.Nd8+ Kd5 48.Nf7 Bb1 49.Ng5 Bg6 50.Nh3 Ke5 51.Nf2 Bf5 52.Nd1 Kd5 53.Nb2 Bb1 54.a4 b4+ 55.Kb3 Bf5 56.a5 Kd4 57.a6 Bc8 58.a7 Bb7 59.Na4 Bd5+ 60.Kb2 c4 61.Nb6 c3+ 62.Kc1 Bb7 63.a8=Q Bxa8 64.Nxa8 b3 65.Nb6 Kd3 66.Na4 b2+ 67.Nxb2+ cxb2+ 68.Kxb2 Ke3 69.Kc3 Kf2 70.Kd3 Kxg2 1-0
2018.08.07 22nd HZ Open 2018
2524898 Elgersma, Onno (2171) De Zwart, J (1982) 1/2-1/2
1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Nxd4 Nf6 5.Nxc6 bxc6 6.e5 Qe7 7.Qe2 Nd5 8.h4 f6 9.c4 Ba6 10.Rh3 Nb6 11.exf6 Qxe2+ 12.Bxe2 Bxc4 13.Bxc4 Nxc4 14.b3 Nb6 15.Bb2 Bb4+ 16.Kf1 gxf6 17.Bxf6 Rf8 18.Re3+ Kf7 19.Bd4 Nd5 20.Rf3+ Ke7 21.Rxf8 Kxf8 22.a3 Ba5 23.Ra2 Re8 24.Re2 Bb6 25.Bg7+ Kf7 26.Rxe8 Kxe8 27.Be5 Bc5 28.g4 Kf7 29.Ke2 Ke6 30.Bg3 Ke7 31.f4 h5 32.g5 Kf7 33.Kf3 Bd6 34.Bf2 a6 35.Nd2 Nxf4 36.Nc4 Nd3 37.Be3 Ne5+ 38.Nxe5+ Bxe5 39.Bf2 Bd6 40.a4 Be7 41.Bg3 Bd8 42.Bh2 d5 43.Bg1 Ke7 44.Bh2 Ke6 45.Bg1 Ke5 46.Bh2+ 1/2-1/2
2018.08.06 22nd HZ Open 2018
2524835 IM Grooten, H (2374) Elgersma, Onno (2171) 1-0
1.d4 Nf6 2.c4 e6 3.Nf3 Bb4+ 4.Nbd2 b6 5.a3 Bxd2+ 6.Qxd2 Bb7 7.e3 O-O 8.Be2 d6 9.O-O a5 10.b3 Nbd7 11.Bb2 Qe7 12.Qc2 c5 13.Nd2 Rfd8 14.f4 Rac8 15.Rae1 d5 16.Bd3 b5 17.Qb1 bxc4 18.bxc4 Ba6 19.cxd5 c4 20.d6 Qxd6 21.Ne4 Nxe4 22.Bxe4 f5 23.Bf3 c3 24.Bc1 Bxf1 25.Rxf1 Nf6 26.Qb5 Nd5 27.Qxa5 Qc6 28.g4 fxg4 29.Bxg4 Ra8 30.Qc5 Qa6 31.a4 Rdc8 32.Qb5 Qxb5 33.Bxe6+ Kf8 34.axb5 Rd8 35.Kf2 Ra1 36.Ke2 Ke7 37.f5 Nf6 38.Kd3 Rb8 39.Bc4 Rc8 40.e4 Ra4 41.Bb3 Ra5 42.Rg1 Ne8 43.Bc4 c2 44.e5 Kf8 45.Rg2 Rc7 46.Rxc2 1-0
2018.08.05 22nd HZ Open 2018
2529761 Welten, H (1911) Elgersma, Onno (2171) 0-1
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.a3 Bxc3+ 5.bxc3 d5 6.e3 c5 7.Qc2 O-O 8.Bd3 dxc4 9.Bxc4 Qc7 10.Nf3 b6 11.O-O cxd4 12.cxd4 Ba6 13.Bd3 Qxc2 14.Bxc2 Bxf1 15.Kxf1 Nc6 16.Bd2 Rfd8 17.Ke2 Rac8 18.Bd3 Ne7 19.h3 Rc7 20.e4 Ng6 21.g3 Rcd7 22.Ke3 Ne8 23.Bb5 Rc7 24.Bd3 Nd6 25.Bb4 Nc4+ 26.Ke2 Nb2 27.Ba6 Rc2+ 28.Kf1 Rc7 29.Ke2 Na4 30.Kd3 Nc5+ 31.Bxc5 bxc5 32.Rc1 Rdd7 33.Bb5 cxd4 34.Rxc7 Rxc7 35.Kxd4 Kf8 36.a4 f6 37.h4 Ke7 38.h5 Nf8 39.g4 e5+ 40.Kd3 Ne6 41.Nh4 Nf4+ 42.Kd2 g6 43.h6 Rc8 44.Nf3 Nh3 45.Ke1 Rc3 46.Nh4 Nf4 47.f3 Rc1+ 0-1
2018.08.05 22nd HZ Open 2018
2529781 Elgersma, Onno (2171) IM Timmermans, M (2383) 1/2-1/2
1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Nxd4 Nf6 5.Nxc6 bxc6 6.e5 Qe7 7.Qe2 Nd5 8.h4 f6 9.c4 Ba6 10.Rh3 fxe5 11.Bg5 Nf6 12.Re3 O-O-O 13.Nd2 Qf7 14.O-O-O h6 15.Bxf6 gxf6 16.Rf3 Qe6 17.Qe3 c5 18.Ne4 h5 19.Kb1 Bb7 20.Rxf6 Qg4 21.f3 Bxe4+ 1/2-1/2
2018.08.04 22nd HZ Open 2018
2529714 Elgersma, Onno (2171) De Bock, Martin (1680) 1-0
1.e4 e6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Bd7 5.Nf3 Bc6 6.Bd3 Nd7 7.O-O Ngf6 8.Ng3 h6 9.c4 Bxf3 10.Qxf3 c6 11.Rd1 Bd6 12.Be3 O-O 13.a3 Qc7 14.b4 a6 15.Rab1 Rfe8 16.a4 Bxg3 17.Qxg3 Qxg3 18.hxg3 e5 19.a5 Ng4 20.Bc1 exd4 21.Bb2 c5 22.bxc5 Nxc5 23.Bf5 Nf6 24.Bxd4 Ne6 25.Bxf6 gxf6 26.Rxb7 Rad8 27.Rxd8 Rxd8 28.Bxe6 fxe6 29.Rb6 Kf7 30.Rxa6 Rc8 31.Ra7+ Kg6 32.a6 Rxc4 33.Ra8 Rc1+ 34.Kh2 Ra1 35.g4 e5 36.Kg3 Kf7 37.Kf3 Ra4 38.Kg3 Ke7 39.a7 Kf7 40.Rh8 1-0
2018.08.01 Condigne Dutch Open 2018
2528697 FM Beukema, Jasper (2299) Elgersma, Onno (2150) 1-0
1.d4 Nf6 2.Nf3 e6 3.g3 d5 4.Bg2 Be7 5.O-O O-O 6.b3 c5 7.e3 Nc6 8.Bb2 b6 9.Nbd2 Ba6 10.Re1 Rc8 11.a3 Qc7 12.c4 dxc4 13.bxc4 Rfd8 14.Rc1 Na5 15.Ne5 Bb7 16.Ndf3 h6 17.Bh3 Nc6 18.d5 exd5 19.Nxc6 Bxc6 20.Bxc8 dxc4 21.Qe2 Qxc8 22.Ne5 Ba8 23.Qxc4 Bd5 24.Qe2 h5 25.f3 Qe6 26.Red1 h4 27.e4 Bb3 28.Rxd8+ Bxd8 29.f4 Bc7 30.Qf3 hxg3 31.hxg3 Ba2 32.Rd1 Qh3 33.Rd2 Bb1 34.Rh2 Qe6 35.f5 Qe8 36.Ng6 fxg6 37.Qb3+ Qf7 38.Rh8+ Kxh8 39.Qxf7 Bxg3 40.fxg6 1-0
2018.07.27 Condigne Dutch Open 2018
2536147 Elgersma, Onno (2150) IM Antonio, V (2404) 0-1
1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 a6 5.c4 Qc7 6.Nc3 Nf6 7.a3 b6 8.Be2 Bb7 9.f3 Be7 10.Be3 d6 11.O-O Nbd7 12.Qd2 Rc8 13.Rac1 O-O 14.b4 Qb8 15.Rfd1 Bd8 16.Nb3 Bc7 17.Bf4 Ne5 18.Bxe5 dxe5 19.Kh1 Nh5 20.c5 b5 21.a4 bxa4 22.Nxa4 Bc6 23.Nc3 Qxb4 24.Nd5 Qxb3 25.Ne7+ Kh8 26.Nxc6 Qa4 27.Nb4 Rfd8 28.Qb2 Rb8 29.Rb1 f6 30.Rxd8+ Bxd8 31.Bd1 Qb5 32.Be2 Qxc5 33.Rd1 Be7 34.Nxa6 Rxb2 35.Nxc5 Rxe2 36.Nxe6 Nf4 37.Nc7 h5 38.g3 Nh3 39.Rd7 Ng5 40.Kg1 Bc5+ 41.Kf1 Rf2+ 42.Ke1 Nxf3+ 43.Kd1 Bd4 44.Rd8+ Kh7 45.Re8 Bb2 46.Rd8 Nd4 47.Rd7 Bc3 48.Re7 Rf1# 0-1
2018.07.25 Condigne Dutch Open 2018
2536094 GM Anurag, M (2484) Elgersma, Onno (2150) 1-0
1.e4 e6 2.d4 d5 3.Nd2 Nf6 4.e5 Nfd7 5.Bd3 c5 6.c3 Nc6 7.Ngf3 cxd4 8.cxd4 f6 9.exf6 Nxf6 10.O-O Bd6 11.b3 O-O 12.Bb2 Nh5 13.g3 g6 14.Qe2 Bd7 15.Rac1 Rc8 16.Ne5 Nxe5 17.dxe5 Bc5 18.Nf3 Qe7 19.Rc2 Bb6 20.Rxc8 Rxc8 21.Bc1 Rf8 22.Be3 Bxe3 23.Qxe3 a6 24.Rc1 Rc8 25.Rxc8+ Bxc8 26.Qc1 Qd7 27.h4 Ng7 28.Nh2 b6 29.Ng4 Ne8 30.h5 gxh5 31.Qg5+ Qg7 32.Bxh7+ Kf8 33.Qxh5 d4 34.Bg6 Bd7 35.Qg5 d3 36.Qf4+ Ke7 37.Bxd3 Bc6 38.Be4 Kd7 39.Nf6+ Nxf6 40.exf6 Qf7 41.Bxc6+ Kxc6 42.g4 Kd5 43.g5 b5 44.Kg2 a5 45.Qb8 Qh5 46.Qxb5+ Ke4 47.Qc6+ Kf4 48.Qc4+ Kf5 49.Qd3+ Kf4 50.Qe3+ 1-0
2018.07.24 Condigne Dutch Open 2018
2536066 Elgersma, Onno (2150) IM Vrolijk, Liam (2419) 0-1
1.e4 c6 2.d4 d5 3.e5 Bf5 4.Nf3 e6 5.Be2 Ne7 6.O-O Ng6 7.Ne1 h5 8.c3 c5 9.Be3 Nc6 10.Nd2 h4 11.a3 Qb6 12.b4 cxd4 13.cxd4 f6 14.Nb3 Kf7 15.Qd2 a5 16.b5 a4 17.Nc5 Ncxe5 18.Nxe6 Qxe6 19.dxe5 fxe5 20.Nf3 Be7 21.Ng5+ Bxg5 22.Bxg5 Rhc8 23.Rac1 Kg8 24.Qb4 h3 25.g3 Kh7 26.g4 Be4 27.Rc3 Rxc3 28.Qxc3 Bg2 29.Rd1 Rf8 30.Qd3 Kh8 31.Rc1 e4 32.Qg3 d4 33.Bc4 Qe5 34.Qxe5 Nxe5 35.Be2 Bf3 36.Rc5 Nxg4 37.Be7 Re8 38.Rh5+ Nh6 39.Bxf3 exf3 40.Bb4 Rc8 41.Rc5 Rxc5 42.Bxc5 d3 43.Bb4 Ng4 44.Bc3 Kg8 0-1
2018.07.14 Science Park Open A 2018
2549653 FM Van Baar, Esper (2252) Elgersma, Onno (2150) 1/2-1/2
1.d4 Nf6 2.Nf3 e6 3.g3 d5 4.Bg2 Be7 5.O-O O-O 6.c4 dxc4 7.Qc2 a6 8.a4 Bd7 9.Qxc4 Bc6 10.Bg5 a5 11.Nc3 Nbd7 12.Rfd1 h6 13.Bc1 Nb6 14.Qb3 Ne4 15.Ne5 Nxc3 16.bxc3 Bxg2 17.Kxg2 Qd5+ 18.Qxd5 exd5 19.Ba3 Rfe8 20.Bxe7 Rxe7 21.e3 f6 22.Nd3 Nc4 23.Rab1 c6 24.Nc5 b6 25.Nb3 Rb8 26.Nd2 Nd6 27.Rdc1 b5 28.c4 Reb7 29.cxb5 cxb5 30.Rc5 bxa4 31.Rxb7 Rxb7 32.Rxd5 Nb5 33.Nc4 a3 34.Nxa3 Nxa3 35.Rxa5 Nc2 36.Ra2 Ne1+ 37.Kf1 Nd3 38.Ra3 Nb2 39.h4 Nc4 40.Ra4 Nd2+ 41.Kg2 Rb2 42.d5 f5 43.Rf4 g6 44.h5 Kg7 45.hxg6 Kxg6 46.d6 Rb8 47.g4 fxg4 48.Rxg4+ Kf5 49.Rg7 Ne4 50.Rh7 Rg8+ 51.Kf1 Rg6 52.d7 Rd6 53.Rxh6 Rxd7 54.Rh4 Rd2 55.Rf4+ Ke5 56.Ke1 Ra2 57.Kf1 Nd2+ 58.Kg2 Ra7 59.Rg4 Rf7 60.Rg3 Ne4 61.f4+ Kd5 62.Rg8 Nf6 63.Rg5+ Ke4 64.Re5+ Kd3 65.Kf3 Rh7 66.Rf5 Rh6 67.e4 Kd4 68.e5 Ne4 69.Rf8 Nd2+ 70.Kg4 Ke4 71.Rf6 Rh8 72.e6 Re8 73.f5 Ke5 74.Rf7 Ne4 75.Kh5 Nf6+ 76.Kg6 Rg8+ 77.Rg7 Rxg7+ 78.Kxg7 Kxf5 79.e7 Ke6 80.e8=N 1/2-1/2
2018.07.13 Science Park Open A 2018
2549644 Elgersma, Onno (2150) CM Theulings, PP (2088) 1-0
1.Nf3 Nf6 2.g3 c5 3.Bg2 d5 4.O-O g6 5.d3 Nc6 6.Nbd2 Bg7 7.e4 O-O 8.Re1 e6 9.Qe2 b6 10.a3 a5 11.c3 Ba6 12.Rd1 Re8 13.Ne1 Qc7 14.a4 Rad8 15.Rb1 h6 16.h3 Rd7 17.Qe3 Red8 18.exd5 Nxd5 19.Qe4 Ne5 20.Ndf3 Nxd3 21.Rxd3 Bxd3 22.Nxd3 Nf6 23.Qe5 Qc6 24.Nde1 Qxa4 25.Qe2 Qa2 26.Qc2 Rd1 27.Bf1 a4 28.Be2 R1d7 29.Ne5 Rd5 30.Bc4 Qxb1 31.Qxb1 Rxe5 32.Nf3 Rd1+ 33.Kg2 Rf5 34.Qc2 Rd8 35.g4 1-0
2018.07.12 Science Park Open A 2018
2549627 Hildenbrand, P (2226) Elgersma, Onno (2150) 1-0
1.e4 e6 2.Qe2 c5 3.g3 Nc6 4.Nf3 g6 5.Nc3 d6 6.b3 Bg7 7.Bb2 Nge7 8.h4 h6 9.Bg2 Rb8 10.Nd1 e5 11.Ne3 Be6 12.h5 Qd7 13.hxg6 fxg6 14.c3 b5 15.Rd1 b4 16.Ba1 bxc3 17.dxc3 O-O 18.Nd2 Nd8 19.Ndc4 Nf7 20.Rd2 Rbd8 21.O-O Nc8 22.Rfd1 Bh3 23.f4 Bxg2 24.Kxg2 exf4 25.gxf4 Qe6 26.Nd5 Rde8 27.Re1 Qd7 28.Rd3 Ne7 29.Nce3 Nd8 30.c4 Bxa1 31.Rxa1 Ne6 32.Rf1 Nxd5 33.Nxd5 Nd4 34.Qe3 Qg4+ 35.Kh2 Nf5 36.Qe1 Nd4 37.Rg3 Qh4+ 38.Kg2 Nf5 39.exf5 Rxe1 40.Rxe1 Rxf5 41.Rh1 Qd8 42.Rxh6 g5 43.Rgh3 Rf8 44.f5 Qa5 45.Rh8+ Kf7 46.R3h7+ Ke8 47.Re7+ Kd8 48.Rxf8# 1-0
2018.07.11 Science Park Open A 2018
2549619 Elgersma, Onno (2150) Spiler, Angelo (2049) 1-0
1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 g6 5.c4 Bg7 6.Be3 Nf6 7.Nc3 d6 8.Be2 O-O 9.O-O Bd7 10.Qd2 Ng4 11.Bxg4 Bxg4 12.f3 Bd7 13.b3 Qa5 14.Rfd1 Rfd8 15.Rac1 Nxd4 16.Bxd4 Bxd4+ 17.Qxd4 Bc6 18.Rb1 Qc5 19.Kh1 Qxd4 20.Rxd4 Kf8 21.Kg1 a6 22.a4 Rdb8 23.b4 b6 24.Kf2 Rc8 25.Ke3 Ra7 26.a5 bxa5 27.bxa5 Rb7 28.Rxb7 Bxb7 29.Na4 Rc6 30.Nb6 Ke8 31.Rd2 Rc5 32.Ra2 e6 33.Kd4 f5 34.exf5 gxf5 35.f4 h5 36.g3 Be4 37.Kc3 Rc7 38.Kb4 d5 39.cxd5 exd5 40.Rd2 d4 41.Rxd4 Rc2 42.Nc4 Ke7 43.Rd2 Rxd2 44.Nxd2 Bd3 45.Kc5 Ke6 46.Nb3 Kd7 47.Nd4 Ke8 48.Kd6 Kf7 49.Ke5 Kg6 50.Nf3 1-0
2018.07.10 Science Park Open A 2018
2549603 Cornelisse, J (2132) Elgersma, Onno (2150) 1-0
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Bd3 c5 6.Nf3 d5 7.O-O b6 8.cxd5 exd5 9.Ne5 Ba6 10.Ne2 Qe8 11.a3 Ba5 12.b4 cxb4 13.axb4 Bxb4 14.Bxa6 Nxa6 15.Rxa6 Ba5 16.Rxa5 bxa5 17.Ba3 Qb5 18.Bxf8 Rxf8 19.Qd3 Qb6 20.Rb1 Qc7 21.Qc3 Qd6 22.Qxa5 Rb8 23.Rxb8+ Qxb8 24.h3 h6 25.Nf4 Qb7 26.Qd8+ Kh7 27.Qf8 g5 28.Nfd3 a5 29.Nxf7 Qb1+ 30.Kh2 Qxd3 31.Qxh6+ Kg8 32.Qxf6 1-0
2018.07.09 Science Park Open A 2018
2555417 Elgersma, Onno (2150) FM Brink, B (2342) 1/2-1/2
1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Nxd4 Nf6 5.Nxc6 bxc6 6.e5 Qe7 7.Qe2 Nd5 8.h4 Bb7 9.c4 Nb6 10.Bg5 Qe6 11.Nd2 h6 12.Bf4 O-O-O 13.O-O-O Kb8 14.Nb3 Qf5 15.Qe3 Qe6 16.Nc5 Qe7 17.Nxb7 Kxb7 18.Rh3 Qc5 19.Rf3 Be7 20.Qxc5 Bxc5 21.Bg3 Rhf8 22.Kc2 Rde8 23.Rf5 Re6 24.h5 a5 25.Rd3 d5 26.exd6 cxd6 27.Rd2 Nd7 28.Rxc5 Nxc5 29.Bxd6 Rxd6 30.Rxd6 Re8 31.Rd2 Re1 32.Bd3 Rh1 33.Re2 Ne6 34.Re5 Kb6 35.Be4 Rf1 36.Kc3 Rxf2 37.Rf5 Rxf5 38.Bxf5 Nf4 39.g4 Kc5 40.a3 g6 41.b4+ axb4+ 42.axb4+ Kd6 43.hxg6 fxg6 44.Be4 h5 45.c5+ Kc7 46.g5 h4 47.Kd4 h3 48.Ke3 Nh5 49.Kf3 h2 50.Kg4 Kd7 51.Kh3 h1=Q+ 52.Bxh1 Nf4+ 53.Kg4 Nd3 54.Be4 Nxb4 55.Bxg6 Ke7 56.Kh5 Na6 57.Kh6 Nxc5 58.Bf5 Nb7 59.g6 Nd6 60.Bc2 Nf7+ 61.Kh7 Ng5+ 62.Kh8 Ne6 63.Bb3 Kf6 64.Bc2 c5 65.Bb3 1/2-1/2
2018.07.08 Science Park Open A 2018
2555411 Frans, Richard (2001) Elgersma, Onno (2150) 0-1
1.e4 e6 2.d4 d5 3.e5 c5 4.c3 Nc6 5.Nf3 Bd7 6.Be2 f6 7.Bf4 Qb6 8.Qd2 cxd4 9.cxd4 g5 10.exf6 gxf4 11.Qxf4 O-O-O 12.O-O Qxb2 13.f7 Qxa1 14.fxg8=Q Rxg8 15.Qd2 Bb4 16.Qc2 Kb8 17.Rd1 Rg4 18.a3 Ba5 19.Qa4 Qb2 20.Nbd2 Nxd4 21.Qxa5 Nxe2+ 22.Kf1 b6 0-1
2018.07.07 Science Park Open A 2018
2555403 Elgersma, Onno (2150) Hoekstra, Pe (2031) 1-0
1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.e5 c5 5.a3 Bxc3+ 6.bxc3 Ne7 7.Nf3 h6 8.h4 O-O 9.Bd3 b6 10.h5 Ba6 11.g4 Bxd3 12.cxd3 Nd7 13.Rg1 Kh8 14.Be3 cxd4 15.cxd4 Rc8 16.Qd2 Kh7 17.g5 Nf5 18.gxh6 gxh6 19.Bxh6 Rg8 20.Bg5 Qc7 21.Ke2 Qc2 22.Bf4 Qxd2+ 23.Kxd2 Rxg1 24.Rxg1 Kh8 25.a4 Nb8 26.Bg5 Nd7 27.Rg4 Rg8 28.Kc3 Kh7 29.Kb4 a6 30.Rg1 Nb8 31.Rc1 Nxd4 32.Nxd4 Rxg5 33.Rc7 Rg7 34.Rb7 Rg8 35.Rxf7+ Kh6 36.Rf6+ Kxh5 37.Rxe6 Nd7 38.f4 Rg4 39.Ne2 Nc5 40.Rxb6 Nxd3+ 41.Kb3 Nxf4 42.Nxf4+ Rxf4 43.Rxa6 Re4 44.e6 Kg6 45.a5 Kf6 46.Rc6 Re1 47.Ra6 Re4 48.Rc6 Re1 49.a6 Ra1 50.Kc2 Ra3 51.Kb2 Ra4 52.Kc3 Ke7 53.Kb3 Ra1 54.Kb4 Ra2 55.Kc5 Ra5+ 56.Kd4 Kf6 57.Rb6 Ke7 58.Ke5 d4+ 59.Kxd4 Kf6 60.Kc4 Ke7 61.Kb4 Ra1 62.Kb5 Ra2 63.Kc6 1-0
2018.06.24 HSG Open 2018
2563872 GM Arnaudov, G (2445) Elgersma, Onno (2113) 1-0
1.Nf3 Nf6 2.c4 e6 3.g3 d5 4.Bg2 Be7 5.O-O O-O 6.d4 dxc4 7.Ne5 Nc6 8.Nxc6 bxc6 9.Na3 Bxa3 10.bxa3 Rb8 11.Qd2 Ba6 12.a4 Qc8 13.Ba3 Re8 14.Bxc6 Nd7 15.Rac1 Rb6 16.Bg2 c6 17.Qa5 e5 18.dxe5 Rxe5 19.Qd2 c5 20.Bh3 Re7 21.Rfd1 Rb7 22.Qd6 1-0
2018.06.22 HSG Open 2018
2563829 FM De Ruiter, D (2303) Elgersma, Onno (2113) 1-0
1.Nf3 Nf6 2.g3 e6 3.Bg2 Be7 4.O-O O-O 5.c4 d5 6.b3 c5 7.Bb2 Nc6 8.e3 b6 9.Nc3 Bb7 10.cxd5 exd5 11.d4 a6 12.Qd3 Ra7 13.Rfd1 Qa8 14.Nh4 cxd4 15.exd4 Rd8 16.Nf5 Bf8 17.Bc1 Nb4 18.Qf3 Ne4 19.Na4 b5 20.Nb6 Qb8 21.Bf4 Nd6 22.a4 bxa4 23.Nxa4 Qc8 24.Bxd6 Bxd6 25.Rac1 Qe6 26.Re1 Qf6 27.Nxd6 Qxd6 28.Rc5 Bc6 29.Nc3 Nc2 30.Rd1 Nxd4 31.Rxd4 Qxc5 32.Qe3 Re7 33.Qd2 Red7 34.b4 Qb6 35.Bh3 Rd6 36.Bf1 Bb7 37.Na4 Qc7 38.Bd3 Bc8 39.Nc3 Qe7 40.Bf1 Qe5 41.Nd1 Be6 42.Ne3 R6d7 43.Bxa6 Qd6 44.Bf1 Qb6 45.Bg2 Qc6 46.Bf1 Rc7 47.Kg2 Qc1 48.Qd3 Qc3 49.Qd1 Rb7 50.b5 Qc5 51.Kg1 Ra7 52.Kg2 Qc8 53.b6 Ra5 54.Bd3 Qc5 55.b7 g6 56.Be2 Qb6 57.Qd2 Ra7 58.Bf3 Qxb7 59.Nxd5 Bxd5 60.Bxd5 Qe7 61.Bxf7+ Kxf7 62.Rxd8 Qb7+ 63.f3 Qb3 64.Qf4+ Ke7 65.Rd4 Ra2+ 66.Kh3 Ra6 67.Qc7+ Kf6 68.Rf4+ Kg5 69.Qe7+ Kh5 70.Rh4# 1-0
2018.06.01 45th OKU 2018
2573298 IM Vrolijk, Liam (2419) Elgersma, Onno (2113) 1-0
1.d4 Nf6 2.c4 e6 3.Nf3 Bb4+ 4.Bd2 Qe7 5.g3 Nc6 6.Nc3 O-O 7.Bg2 d6 8.O-O Re8 9.Rc1 Bxc3 10.Bxc3 Ne4 11.Be1 a5 12.d5 Nb8 13.dxe6 Qxe6 14.Nd4 Qe7 15.f3 Nc5 16.e4 Bd7 17.Bc3 Nc6 18.Nxc6 Bxc6 19.b3 f6 20.Qd2 b6 21.Rfe1 Kh8 22.Rcd1 Qf7 23.Re3 f5 24.exf5 Qxf5 25.Rde1 Qf7 26.Qd4 Rxe3 27.Rxe3 Re8 28.Rxe8+ Bxe8 29.f4 Bd7 30.h3 h5 31.Bf3 Qg6 32.Kh2 Qc2+ 33.Qd2 Qxd2+ 34.Bxd2 g6 35.g4 hxg4 36.Bc3+ Kg8 37.hxg4 Kf7 38.Kg3 Nd3 39.Bd2 a4 40.Kh4 axb3 41.axb3 Nc5 42.b4 Ne6 43.Be4 b5 44.cxb5 Bxb5 45.f5 gxf5 46.gxf5 Nd4 47.Kg5 1-0
2017.10.28 21st Hoogeveen Open 2017
2666154 Elgersma, Onno (1884) FM Clemens, A (2198) 1/2-1/2
1.e4 g6 2.d4 Bg7 3.Be3 c5 4.c3 cxd4 5.cxd4 d5 6.exd5 Nf6 7.Bb5+ Nbd7 8.Nc3 O-O 9.d6 exd6 10.Nf3 Nb6 11.O-O Nbd5 12.Nxd5 Nxd5 13.Bg5 Qb6 14.Bc4 Be6 15.Qd2 Nc7 16.d5 Bf5 17.Bb3 a5 18.Be3 Qb4 19.Qxb4 axb4 20.Rac1 Na6 21.Nd4 Bd7 22.Bc4 Nc5 23.Rfd1 Rfe8 24.Kf1 b6 25.Rc2 Ba4 26.b3 Bd7 27.Re1 Re4 28.Nb5 Bxb5 29.Bxb5 Bc3 30.Ree2 Ra7 31.f3 Re5 32.Bc4 g5 33.f4 gxf4 34.Bxf4 Rf5 35.Rf2 Be5 36.Bxe5 Rxe5 37.Rce2 Ne4 38.Rf4 Rae7 39.Bd3 f5 40.g4 Nc5 41.Bc4 fxg4 42.Rxg4+ Kf8 43.Rf4+ Rf7 44.Rxf7+ Kxf7 45.Rxe5 dxe5 46.Kf2 Ne4+ 47.Kf3 Nd6 48.Bd3 h6 49.h4 1/2-1/2
2017.10.27 21st Hoogeveen Open 2017
2666127 Boersma, J (2057) Elgersma, Onno (1884) 0-1
1.e4 e6 2.d4 d5 3.Nd2 Nf6 4.Bd3 c5 5.e5 Nfd7 6.c3 Nc6 7.Ngf3 cxd4 8.cxd4 Be7 9.O-O Qb6 10.a3 a5 11.Qa4 g5 12.Nb3 g4 13.Ne1 Qc7 14.Nd2 h5 15.Nc2 Nb6 16.Qb3 Bd7 17.Re1 h4 18.Nf1 O-O-O 19.Bf4 Kb8 20.Rac1 Rdf8 21.Be2 a4 22.Qe3 Rfg8 23.Nb4 Qd8 24.Nxc6+ Bxc6 25.Rc3 Nc4 26.Qc1 Na5 27.Ne3 Nb3 28.Qd1 Qb6 29.Nc2 Na5 30.Bc1 g3 31.hxg3 hxg3 32.fxg3 Nb3 33.Bf4 Rg7 34.Rf1 Rgh7 35.Kf2 Na5 36.Qc1 Rh2 37.g4 R2h4 38.Ke1 Rh1 39.Kf2 Bh4+ 40.Kf3 Rxf1+ 41.Bxf1 Be7 42.Kf2 Nb3 43.Qd1 Ka7 44.Qd3 Rh1 45.g5 Be8 46.Be3 Na5 47.Bc1 Nc4 48.Qg3 Nxb2 49.Qf3 Bb5 50.Bxb5 Nd1+ 51.Kg3 Nxc3 52.Qxc3 Qxb5 53.Be3 Bd8 54.Nb4 Ba5 0-1
2017.10.26 21st Hoogeveen Open 2017
2666093 French, Max (1991) Elgersma, Onno (1884) 1/2-1/2
1.d4 Nf6 2.c4 e6 3.Nf3 Bb4+ 4.Bd2 Qe7 5.g3 Nc6 6.Nc3 Bxc3 7.Bxc3 Ne4 8.Rc1 O-O 9.Bg2 d6 10.O-O Nxc3 11.Rxc3 e5 12.d5 Nb8 13.e4 Bg4 14.Qc2 Bxf3 15.Bxf3 c5 16.Bg4 g6 17.f4 Kg7 18.Rcf3 Na6 19.a3 Rab8 20.h4 exf4 21.Rxf4 Qe5 22.Qf2 f6 23.Bd7 Qe7 24.Ba4 Qe5 25.g4 Rf7 26.g5 Rbf8 27.Bd1 f5 28.Bg4 Qxf4 29.Qxf4 fxg4 30.Qxd6 Rxf1+ 31.Kg2 R1f2+ 32.Kg1 Rf1+ 33.Kg2 R1f2+ 1/2-1/2
2017.10.25 21st Hoogeveen Open 2017
2666059 Elgersma, Onno (1884) Fehr, A (2081) 1-0
1.e4 g6 2.d4 Bg7 3.Be3 d6 4.Qd2 c5 5.Ne2 Nc6 6.Nbc3 cxd4 7.Nxd4 Nxd4 8.Bxd4 Nf6 9.f3 O-O 10.O-O-O Be6 11.g4 Qa5 12.Kb1 Rfc8 13.a3 Nd7 14.Nd5 Qd8 15.Bxg7 Kxg7 16.h4 Bxd5 17.exd5 Ne5 18.h5 Qh8 19.hxg6 fxg6 20.f4 Nf7 21.g5 Rc7 22.Bh3 Rf8 23.Be6 h5 24.Qd4+ Kh7 25.Qe4 Kg7 26.Rdf1 b5 27.Rf3 Rc4 28.Qe3 Kh7 29.b3 Rc7 30.Qe4 b4 31.Rxh5+ 1-0
2017.10.24 21st Hoogeveen Open 2017
2666019 Nicolai, Am (2019) Elgersma, Onno (1884) 1-0
1.d4 Nf6 2.Nf3 e6 3.c4 Bb4+ 4.Bd2 Bxd2+ 5.Nbxd2 b6 6.e4 Bb7 7.Bd3 d6 8.O-O Nbd7 9.e5 dxe5 10.dxe5 Ng4 11.Qe2 Ndxe5 12.Nxe5 Nxe5 13.Qxe5 Qxd3 14.Qxc7 Qd7 15.Qf4 Rd8 16.Rfd1 O-O 17.Qg4 e5 18.Qxd7 Rxd7 19.Nf3 Re7 20.Rd6 f6 21.Rad1 Kf7 22.Nd2 Rc8 23.b3 Rc6 24.Ne4 Kg6 25.Nc3 h5 26.Rd7 Rc7 27.Rxc7 Rxc7 28.Nb5 Rc5 29.Rd7 Bc6 30.Rc7 a5 31.Nd6 e4 32.Nc8 Bd7 33.Ne7+ Kf7 34.Rxd7 Ke8 35.Rb7 e3 36.fxe3 Re5 37.Nd5 1-0
2017.10.23 21st Hoogeveen Open 2017
2668943 Elgersma, Onno (1884) CM Vistisen, L (2073) 0-1
1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.d3 Bc5 5.c3 d6 6.a4 a6 7.O-O Be6 8.Nbd2 O-O 9.h3 Ba7 10.Re1 Qd7 11.Qe2 Nh5 12.Nxe5 Nxe5 13.Qxh5 Bxc4 14.Nxc4 Nxd3 15.Rf1 Nxc1 16.Rfxc1 f5 17.e5 b5 18.axb5 axb5 19.Na3 dxe5 20.Rd1 Qe6 21.Nxb5 Bxf2+ 22.Kxf2 Rxa1 23.Rxa1 Qb6+ 24.Kg3 Qxb5 25.b4 e4 26.Kh2 Qe5+ 27.Kh1 Qxc3 28.Rf1 g6 29.Qe2 Qxb4 0-1
2017.10.22 21st Hoogeveen Open 2017
2668883 FM Roebers, J (2086) Elgersma, Onno (1884) 1-0
1.b3 Nf6 2.Bb2 e6 3.Nf3 b6 4.g3 Bb7 5.Bg2 Be7 6.O-O c5 7.d3 Nc6 8.Ne5 Qc7 9.Nxc6 Bxc6 10.e4 d6 11.Qe2 Qb7 12.a4 a6 13.Nd2 h5 14.h3 Rc8 15.Nc4 Kf8 16.f4 d5 17.Ne5 dxe4 18.Nxc6 Qxc6 19.dxe4 c4 20.Bd4 cxb3 21.cxb3 Bc5 22.Be3 Ke7 23.Rac1 Bxe3+ 24.Qxe3 Qb7 25.e5 Nd5 26.Bxd5 exd5 27.f5 Rc6 28.Qg5+ Ke8 29.Qxg7 Rf8 30.Rce1 Rc2 31.e6 1-0
2017.10.21 21st Hoogeveen Open 2017
2668845 Elgersma, Onno (1884) Stanetzek, C (2211) 0-1
1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.c3 Nf6 5.d3 O-O 6.O-O a6 7.Bb3 Ba7 8.Nbd2 d6 9.Bc2 Be6 10.h3 Ne7 11.Re1 Ng6 12.Nf1 c6 13.d4 b5 14.a4 Qc7 15.axb5 axb5 16.Be3 Bb6 17.Qd2 c5 18.d5 Bd7 19.Ng3 Rfb8 20.Bg5 Ne8 21.h4 f6 22.Be3 c4 23.Nf5 Bxf5 24.exf5 Ne7 25.g4 Ra7 26.Rxa7 Qxa7 27.g5 Nc7 28.Be4 Bxe3 29.fxe3 Qc5 30.Kf2 b4 31.gxf6 gxf6 32.Rg1+ Kf7 33.Qe2 Ke8 34.Rg7 bxc3 35.bxc3 Ncxd5 36.Bxd5 Qxd5 37.e4 Qc5+ 38.Kg3 Rb3 39.Qd2 d5 40.exd5 Kd7 41.Kh3 Kd6 42.Qh6 Nxd5 43.Rf7 Qc8 44.Kg4 Qg8+ 45.Rg7 Qd8 46.Ng5 Ne3+ 47.Kh5 Kc6 48.Nf3 Qe8+ 49.Rg6 hxg6+ 50.fxg6 Rxc3 51.Qg7 Nd5 52.Qf7 Qh8+ 53.Kg4 Qc8+ 54.Kh5 Rxf3 55.g7 Rg3 56.Kh6 Qg4 57.Qe8+ Kc5 0-1
2017.07.26 Dutch Open 2017
2710461 Elgersma, Onno (1992) De Boer, Bas (2079) 0-1
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.h4 e6 7.g4 b5 8.g5 b4 9.gxf6 bxc3 10.fxg7 Bxg7 11.bxc3 Qa5 12.Bd2 Bb7 13.Qg4 Qe5 14.Rg1 Bf6 15.Bd3 h5 16.Qg3 Qxg3 17.fxg3 Nd7 18.Rb1 Nc5 19.Bf4 e5 20.Nf5 exf4 21.Nxd6+ Ke7 22.Nxb7 Rab8 23.Nxc5 Rxb1+ 24.Kf2 fxg3+ 25.Kg2 Rxg1+ 26.Kxg1 a5 27.Kg2 Be5 28.a4 Rh6 29.Nb3 Rf6 30.Nxa5 Rf2+ 31.Kg1 Bxc3 32.Nb3 Rh2 33.a5 Be1 34.a6 Bf2+ 35.Kf1 Ba7 0-1
2017.05.26 Groninger Combinatie Open
2751953 FM Maatman, Nick (2385) Elgersma, Onno (2136) 1-0
1.d4 e6 2.e4 d5 3.Nd2 Nf6 4.e5 Nfd7 5.Bd3 c5 6.c3 Nc6 7.Ngf3 cxd4 8.cxd4 f6 9.exf6 Nxf6 10.O-O Bd6 11.b3 O-O 12.Bb2 a5 13.Ne5 a4 14.Ndf3 Nb4 15.Bb1 a3 16.Bc3 Ne4 17.Bxe4 dxe4 18.Nd2 e3 19.fxe3 Nd5 20.Rxf8+ Bxf8 21.Ne4 Nxe3 22.Qf3 Nf5 23.g4 Nh6 24.Rd1 Qe8 25.Rf1 Bd7 26.Bd2 Bb5 27.Rf2 Be7 28.Bxh6 gxh6 29.Nf6+ Bxf6 30.Qxf6 Rc8 31.Qxh6 Rc7 32.h3 Qc8 33.Kh2 b6 34.Qf6 Rg7 35.h4 Ba6 36.h5 h6 37.Qxh6 Qd8 38.Qxe6+ Kh8 39.Rf6 1-0
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