WORLDBASE

WORLDBASE Players FM Duijker, R

Stockfish
GameID: 0
FIDE Country B-Year Gender Standard Rapid Blitz
1010565 NED 1981 M 2222 0 2177
142 games
2026.08.08 Scheldemond Open 2026
3507666 FM Duijker, R (2195) FM Ronge, Tim (2331) 1/2-1/2
1.c4 e6 2.Nf3 d5 3.g3 Nf6 4.Bg2 Bd6 5.O-O O-O 6.b3 Re8 7.Bb2 dxc4 8.bxc4 e5 9.c5 Bxc5 10.Nxe5 Bd4 11.Nd3 Nc6 12.Nc3 Bg4 13.Re1 h5 14.Qb3 Bb6 15.Nd5 Nxd5 16.Bxd5 Qd7 17.Nf4 Nd4 18.Bxd4 Bxd4 19.Rab1 c6 20.Bf3 Bb6 21.Nxh5 Bxh5 22.Bxh5 Re5 23.Bf3 Qxd2 24.Red1 Qg5 25.Rd7 Re7 26.Rbd1 Rae8 27.Kg2 Qf5 1/2-1/2
2026.08.07 Scheldemond Open 2026
3507642 Lind, Jacco (2089) FM Duijker, R (2195) 0-1
1.d4 Nf6 2.c4 c5 3.d5 b5 4.cxb5 a6 5.bxa6 e6 6.dxe6 fxe6 7.Nc3 Bxa6 8.g3 d5 9.Bg2 Nbd7 10.Nh3 Bd6 11.O-O Rb8 12.Bf4 Qe7 13.Qa4 Rb6 14.Rfe1 O-O 15.e4 Bxf4 16.Nxf4 d4 17.e5 Ng4 18.Ncd5 exd5 19.Nxd5 Qf7 20.Nxb6 Qxf2+ 21.Kh1 Bb7 22.Nd5 Ndxe5 23.Rf1 Nf3 24.Qb3 Qg1+ 25.Rxg1 Nf2# 0-1
2026.08.06 Scheldemond Open 2026
3507614 FM Duijker, R (2195) Sievers, A (2119) 1-0
1.c4 Nf6 2.Nf3 g6 3.Nc3 Bg7 4.e4 e5 5.d4 exd4 6.Nxd4 O-O 7.Be2 Re8 8.f3 c6 9.Bg5 Qa5 10.Qd2 d5 11.Nb3 Qb4 12.cxd5 cxd5 13.Bxf6 Bxf6 14.Nxd5 Qxd2+ 15.Kxd2 Rd8 16.Kc2 Be5 17.Rad1 Nc6 18.Ne7+ Kf8 19.Nxc6 Rxd1 20.Rxd1 bxc6 21.Rd8+ Ke7 22.Rg8 Rb8 23.g3 h5 24.f4 Bf6 25.Ba6 Rxb3 26.Kxb3 Bxa6 27.e5 Bg7 28.Rxg7 Kf8 29.e6 1-0
2026.08.05 Scheldemond Open 2026
3507591 Drenthen, Arjan (1970) FM Duijker, R (2195) 0-1
1.Nf3 Nf6 2.g3 c5 3.Bg2 Nc6 4.d4 cxd4 5.Nxd4 g6 6.O-O Bg7 7.c4 O-O 8.Nc3 d6 9.Nxc6 bxc6 10.Bxc6 Rb8 11.b3 Bh3 12.Re1 Ng4 13.Bb2 Qb6 14.e3 Qxc6 15.f3 Ne5 0-1
2026.08.03 Scheldemond Open 2026
3507527 Skettos, Nicolas (2002) FM Duijker, R (2195) 1-0
1.e4 d6 2.d4 Nf6 3.Bd3 e5 4.c3 Be7 5.Nf3 Nbd7 6.O-O c6 7.Nbd2 Qc7 8.Qe2 h6 9.b3 Nf8 10.dxe5 dxe5 11.Nc4 Ng6 12.a4 O-O 13.Re1 Bg4 14.h3 Be6 15.Qc2 Rad8 16.Bf1 Nh7 17.Be3 Ng5 18.Nxg5 Bxg5 19.Bxg5 hxg5 20.g3 Rd7 21.Rad1 Rfd8 22.Ne3 Nf8 23.b4 a5 24.Rxd7 Rxd7 25.Kh2 Qd8 26.Rd1 Rxd1 27.Qxd1 Qxd1 28.Nxd1 Nd7 29.Nb2 axb4 30.cxb4 f6 31.Nc4 Bxc4 32.Bxc4+ Kf8 33.h4 gxh4 34.gxh4 Ke7 35.a5 Nf8 36.Kg3 Ng6 37.Kg4 Nf4 38.Kf5 g6+ 39.Kg4 Kd6 40.Bf7 Ke7 41.Bc4 Kf8 42.Kg3 Ke8 43.Kg4 Ke7 44.Kg3 Nh5+ 45.Kg4 Ng7 46.f3 Nh5 47.Bg8 Nf4 48.Bc4 Ke8 49.Kg3 Kd7 50.Bf7 Ke7 51.Bc4 Kd6 52.Bf7 Nd3 53.Bxg6 Ke7 54.Bf5 Nxb4 55.Bc8 c5 56.Bxb7 c4 57.Kf2 Nd3+ 58.Ke3 Kd6 59.h5 Nf4 60.h6 1-0
2026.08.02 Scheldemond Open 2026
3507465 Van der Borgt, P (1952) FM Duijker, R (2195) 0-1
1.e4 c5 2.c3 d5 3.exd5 Qxd5 4.d4 Nc6 5.Nf3 cxd4 6.cxd4 Bg4 7.Be2 e6 8.Nc3 Qa5 9.O-O Nf6 10.a3 Bd6 11.Qb3 Bxf3 12.Bxf3 Nxd4 13.Qd1 Nxf3+ 14.Qxf3 Qh5 15.Qxh5 Nxh5 16.Nb5 Bb8 17.Re1 a6 18.Nc3 Bd6 19.Be3 Nf6 20.Bb6 Rc8 21.g3 Bc5 22.Bxc5 Rxc5 23.Ne4 Nxe4 24.Rxe4 Ke7 25.Rd1 Rd8 26.Rxd8 Kxd8 27.Re2 Kd7 28.Kg2 b5 29.Kf3 Rf5+ 30.Kg2 Rd5 31.Rc2 Rd3 32.Kf1 e5 33.Ke2 e4 34.f4 g6 35.Kf2 f5 36.Ke2 h5 37.Kf2 h4 38.Kg2 Kd6 39.Kf2 h3 40.Ke2 Kd5 41.Rc8 Rb3 42.Rd8+ Kc5 43.Rc8+ Kb6 44.Rc2 Rd3 45.Rc8 Ka5 46.Rc6 Rb3 47.Rc2 Ka4 48.Rd2 Rd3 49.Rc2 Rd6 50.Rc3 a5 51.Rc5 b4 52.Re5 bxa3 53.bxa3 Rb6 0-1
2026.08.02 Scheldemond Open 2026
3507490 FM Duijker, R (2195) WFM Hng, Mei-Xian Eunice (2050) 0-1
1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 a6 5.Nd2 Qc7 6.Bd3 Nf6 7.O-O d6 8.Re1 Be7 9.c4 O-O 10.b3 Nbd7 11.Bb2 b6 12.Rc1 Bb7 13.h3 Ne5 14.Bf1 Ng6 15.g3 Rfe8 16.Bg2 Rad8 17.Qe2 e5 18.Nf5 Bf8 19.Ne3 Ne7 20.Nd5 Nexd5 21.cxd5 Qb8 22.Nc4 Nd7 23.b4 Rc8 24.Qe3 Ba8 25.Bf1 b5 26.Na5 Nb6 27.h4 f5 28.f3 Be7 29.Qb3 Kh8 30.Bh3 Rxc1 31.Rxc1 Rf8 32.Nc6 Bxc6 33.dxc6 Nc4 34.Rxc4 bxc4 35.Qxc4 Qb6+ 36.Kg2 Rc8 37.Bxf5 Rxc6 38.Qf7 Qd8 39.Qh5 Rc2+ 40.Kh3 Qg8 41.Bxh7 Qxh7 42.Qe8+ Qg8 43.Qh5+ Qh7 44.Qe8+ Bf8 45.Qxf8+ Qg8 46.Qf5 Qc8 47.Qxc8+ Rxc8 48.Kg4 Rc2 49.Ba3 Rxa2 50.Bc1 Rc2 51.Bg5 Rc4 52.Be7 d5 53.Kf5 d4 54.Kxe5 d3 55.Bg5 Rc2 56.Ke6 Kg8 0-1
2026.08.01 Scheldemond Open 2026
3494982 FM Duijker, R (2195) Uittenbogaard, Hans (1827) 1-0
1.e4 e5 2.f4 exf4 3.Nf3 d6 4.d4 Be7 5.Bxf4 Bd7 6.Bd3 Nf6 7.Nbd2 b5 8.Qe2 a6 9.O-O c5 10.dxc5 dxc5 11.c4 Qb6 12.e5 Nh5 13.Bg5 g6 14.Ne4 h6 15.Nd6+ Kf8 16.Bxe7+ Kxe7 17.Nh4 Be6 18.Bxg6 fxg6 19.Nxg6+ Kd7 20.Qxh5 Nc6 21.Nxh8 Rxh8 22.Rf7+ Bxf7 23.Qxf7+ Ne7 24.Rd1 1-0
2026.07.29 Dutch Open 2026
3495764 FM Duijker, R (2195) Botter, Simon (2170) 1-0
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 Nbd7 7.Be3 e5 8.d5 Ng4 9.Bg5 f6 10.Bh4 Nh6 11.Nd2 g5 12.Bg3 f5 13.f3 a5 14.h3 Nf6 15.Bf2 g4 16.hxg4 fxg4 17.Be3 gxf3 18.gxf3 Nf7 19.Qc2 Nh8 20.O-O-O Ng6 21.Rdg1 Rf7 22.Nf1 Bd7 23.Ng3 a4 24.a3 c6 25.Bd3 Rc8 26.Kb1 b5 27.dxc6 Bxc6 28.cxb5 Bb7 29.Bg5 Qd7 30.Nf5 d5 31.Bxf6 Rxf6 32.Qh2 Bf8 33.Nxd5 Bxd5 34.exd5 Bc5 35.Qxe5 Bxg1 36.Qxf6 Rf8 37.Nh6# 1-0
2026.07.28 Dutch Open 2026
3495727 FM Lont, A (2250) FM Duijker, R (2195) 1-0
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f3 O-O 6.Be3 c5 7.Nge2 Nc6 8.d5 Ne5 9.Ng3 h5 10.Be2 h4 11.Nf1 e6 12.Bg5 exd5 13.Nxd5 Be6 14.Nd2 b5 15.O-O h3 16.cxb5 hxg2 17.Rf2 c4 18.Nxc4 Bxd5 19.exd5 Nxc4 20.Bxc4 Qc8 21.Rc1 Qf5 22.Qd2 Nh5 23.Kxg2 Bf6 24.Bxf6 Nf4+ 25.Kh1 Qxf6 26.Bf1 Rae8 27.Rc4 g5 28.h4 Qf5 29.hxg5 Nxd5 30.Rh4 Re3 31.Qd4 Qe5 32.Qxe5 dxe5 33.Bc4 Re1+ 34.Rf1 Rxf1+ 35.Bxf1 Nf4 36.Rh2 Rd8 37.Kg1 Rd1 38.Rc2 Nh3+ 39.Kg2 Nxg5 40.Be2 Ra1 41.Bc4 Kf8 42.Bb3 Rb1 43.a4 Ke7 44.a5 Ra1 45.Rc7+ Kd6 46.Rxa7 Rb1 47.Bc4 Rxb2+ 48.Kg3 f5 49.Rg7 Ne6 50.Rg6 f4+ 51.Kh3 1-0
2026.07.27 Dutch Open 2026
3495705 FM Duijker, R (2195) Vlieger, Olaf (2115) 1-0
1.Nf3 d5 2.g3 Nc6 3.d4 Bf5 4.c4 e6 5.Qa4 Bxb1 6.Rxb1 Bb4+ 7.Bd2 Bxd2+ 8.Nxd2 Nf6 9.Bg2 O-O 10.e3 Ne7 11.O-O c6 12.Qc2 Qd7 13.b4 Rfc8 14.Nb3 b6 15.Rfc1 Nf5 16.a4 Nd6 17.Nd2 Rab8 18.c5 Nf5 19.Bf1 h5 20.b5 cxb5 21.c6 Qc7 22.axb5 h4 23.Nf3 hxg3 24.hxg3 g6 25.Ne5 Kg7 26.Bd3 Rh8 27.Kg2 Rh7 28.Rh1 Rbh8 29.Rxh7+ Rxh7 30.Rh1 Rxh1 31.Kxh1 Ne7 32.Kg2 Ne8 33.f4 Nd6 34.g4 Qc8 35.Qa2 Qc7 36.Kf3 f6 37.Nd7 Nec8 38.Qh2 Qd8 39.Qh4 Qe7 40.g5 fxg5 41.fxg5 Nf7 42.Kf4 Ncd6 43.Ne5 Nxe5 44.Qh6+ Kg8 45.dxe5 Qf7+ 46.Kg3 Nf5+ 47.Bxf5 exf5 48.Kf4 a6 49.bxa6 Qe8 50.a7 Qxc6 51.a8=Q+ Qxa8 52.Qxg6+ Kh8 53.Qf6+ Kg8 54.g6 Qa4+ 55.Kxf5 Qc2+ 56.e4 Qxe4+ 57.Ke6 Qg4+ 58.Ke7 Qb4+ 59.Kd8 Qf8+ 60.Qxf8+ Kxf8 61.e6 1-0
2026.07.26 Dutch Open 2026
3487368 FM Dessyn, Timothee (2257) FM Duijker, R (2195) 1-0
1.d4 d5 2.c4 c5 3.Nf3 Nf6 4.g3 dxc4 5.Bg2 Nc6 6.Qa4 cxd4 7.O-O Bd7 8.Qxc4 Rc8 9.Nxd4 e6 10.Nc3 Nxd4 11.Qxd4 Bc5 12.Qh4 Bc6 13.Bg5 Bxg2 14.Kxg2 Qd4 15.e4 Be7 16.Rad1 Qb4 17.Rd2 h6 18.a3 Qa5 19.e5 Qxe5 20.Qa4+ b5 21.Bxf6 Bxf6 22.Qxb5+ Qxb5 23.Nxb5 Rb8 24.Nd6+ Ke7 25.Rc1 Rhd8 26.Rc7+ Rd7 27.Nc8+ Rxc8 28.Rdxd7+ Ke8 29.Rxf7 1-0
2026.07.25 Dutch Open 2026
3487334 FM Han, Qixiang (2311) FM Duijker, R (2195) 1/2-1/2
1.d4 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 O-O 5.Nc3 d6 6.Nf3 c5 7.d5 Na6 8.O-O Nc7 9.e4 b5 10.cxb5 a6 11.bxa6 Bxa6 12.Re1 Nd7 13.Bf4 Nb5 14.Nxb5 Bxb5 15.e5 Nb6 16.Nd2 Bc4 17.exd6 exd6 18.Ne4 Re8 19.Qc2 Bxd5 20.Nxd6 Rxe1+ 21.Rxe1 Qf6 22.b3 Bxg2 23.Kxg2 Nd5 24.Be5 Qe6 25.Nc4 Nb4 26.Qd2 Bxe5 27.Nxe5 Rxa2 28.Qc3 Rc2 29.Qe3 f6 30.Nc4 Qxe3 31.Rxe3 Kf7 32.Nd6+ Kg7 33.Re7+ Kg8 34.Ne4 f5 35.Nf6+ Kf8 36.Rd7 h6 37.h4 Rb2 38.h5 gxh5 39.Kf3 Nc6 40.Rd5 Nd4+ 41.Kg2 h4 42.Nd7+ Ke8 43.Nxc5 Nxb3 44.gxh4 Nxc5 45.Rxc5 Rb4 46.Rxf5 Rxh4 47.f4 Ke7 1/2-1/2
2026.07.24 Dutch Open 2026
3487302 FM Duijker, R (2195) FM Nemegeer, Arne (2292) 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.Nxc6 bxc6 9.O-O-O Be7 10.Bxf6 gxf6 11.Bc4 Bb7 12.Rhe1 Qc7 13.Qe2 Qa5 14.Bb3 O-O-O 15.Rd3 h5 16.Kb1 Kb8 17.h4 d5 18.Red1 Qc7 19.g3 Qe5 20.f4 Qc7 21.a3 Ka8 22.Na4 dxe4 23.Qxe4 c5 24.Qc4 Rxd3 25.Rxd3 Kb8 26.f5 e5 27.Qxf7 e4 28.Rc3 Qe5 29.Nb6 Ka7 30.Nd7 Qd6 31.Nxc5 e3 32.Rxe3 Qd1+ 33.Ka2 Bxc5 34.Rd3 Qf1 35.Bd5 Rb8 36.Rb3 Bb6 37.Bxb7 Rxb7 38.Qxf6 Qf2 39.c4 Qc5 40.Rc3 Bc7 41.Qe6 Be5 42.Rb3 Rxb3 43.Kxb3 Qb6+ 44.Ka4 Qxb2 45.Qe7+ Kb8 46.Qd8+ Ka7 47.Qe7+ Kb8 48.Qd8+ Ka7 1/2-1/2
2026.07.23 Dutch Open 2026
3487278 FM Duijker, R (2195) CM Bus, T (2056) 1-0
1.e4 e5 2.f4 exf4 3.Nf3 Ne7 4.d4 d5 5.Bd3 dxe4 6.Bxe4 Nd5 7.Bxd5 Qxd5 8.O-O Bd6 9.Re1+ Kf8 10.Qe2 Qe6 11.Qb5 a6 12.Qf1 Qf5 13.c4 g5 14.Nc3 Nc6 15.Ne4 Be7 16.d5 g4 17.dxc6 gxf3 18.Qxf3 Rg8 19.Bxf4 Qg6 20.Ng3 bxc6 21.Bxc7 Be6 22.b3 Rc8 23.Qf4 h5 24.Bd6 Bxd6 25.Qxd6+ Kg7 26.Qe5+ Kh6 27.Rf1 h4 28.Rf6 hxg3 29.Qf4+ Kh5 30.Rxg6 gxh2+ 31.Kxh2 Rxg6 32.Rh1 Rg5 33.Qf6 Kg4 34.Qf3+ 1-0
2026.07.22 Dutch Open 2026
3487247 Hylarides, Charlie Ronald (2090) FM Duijker, R (2195) 1/2-1/2
1.d4 Nf6 2.Bg5 c5 3.Bxf6 gxf6 4.d5 f5 5.c3 d6 6.Nd2 Bg7 7.e4 fxe4 8.Nxe4 Nd7 9.Nf3 Nf6 10.Bd3 Qb6 11.Qd2 Rg8 12.O-O Bg4 13.Qf4 h5 14.Nfg5 O-O-O 15.h3 Bd7 16.b4 cxb4 17.cxb4 Nxe4 18.Nxe4 Bxa1 19.Rxa1 Qxb4 20.Rb1 Qa3 21.Qd2 Kb8 22.Rb3 Qa4 23.Rb4 Qa3 24.Rb3 Qa4 25.Rb4 Qa3 26.Rb3 1/2-1/2
2026.07.21 Dutch Open 2026
3487192 FM Duijker, R (2195) GM Sandipan, C (2468) 0-1
1.e4 d5 2.exd5 Qxd5 3.Nc3 Qa5 4.d4 Nf6 5.Nf3 Bf5 6.Bd2 e6 7.Ne5 Qb6 8.g4 Qxd4 9.Nf3 Qxg4 10.a3 Bxc2 11.Qxc2 Qxf3 12.Rg1 Bc5 13.Bg5 Nc6 14.Bg2 Qf5 15.Qxf5 exf5 16.Bxf6 gxf6 17.Bxc6+ bxc6 18.Rg3 O-O-O 0-1
2026.07.19 1st Amsterdam CF Open
3479532 Grooten, Tommy (2294) FM Duijker, R (2195) 1/2-1/2
1.Nf3 Nf6 2.g3 c5 3.Bg2 g6 4.c3 Bg7 5.d4 cxd4 6.cxd4 O-O 7.Nc3 d5 8.Ne5 Nc6 9.O-O Bf5 10.Nxc6 bxc6 11.Bf4 Nd7 12.Qd2 e5 13.dxe5 Nxe5 14.b3 Re8 15.Rac1 Rc8 16.Rfd1 Qe7 17.Be3 Ng4 18.Bd4 Nf6 19.Re1 h5 20.Qb2 Bh6 21.Rcd1 Ne4 22.Bxe4 dxe4 23.Ra1 e3 24.Nd1 exf2+ 25.Nxf2 Be3 26.Bxe3 Qxe3 27.Qc1 Qd4 28.e3 1/2-1/2
2026.07.18 1st Amsterdam CF Open
3479522 FM Duijker, R (2195) IM Bosboom, M (2328) 1-0
1.e4 b6 2.d4 Bb7 3.Bd3 Nf6 4.Qe2 Nc6 5.c3 e5 6.d5 Ne7 7.h4 Ng6 8.g3 Bc5 9.h5 Ne7 10.h6 gxh6 11.Bxh6 Rg8 12.b4 Bd6 13.Nd2 c6 14.Nc4 Qc7 15.dxc6 Qxc6 16.Nf3 Bc7 17.Bd2 O-O-O 18.b5 Qe6 19.Ng5 Rxg5 20.Bxg5 d5 21.Rh6 Ng6 22.exd5 Rxd5 23.Ne3 Rxd3 24.Qxd3 Ne4 25.Bh4 Nd6 26.Rd1 Be4 27.Qe2 f5 28.f3 Bb7 29.Rxh7 f4 30.gxf4 Qg8 31.Rxc7+ Kxc7 32.Qd3 Nc8 33.Qd8+ Qxd8 34.Bxd8+ Kb8 35.f5 Nh4 1-0
2026.07.17 1st Amsterdam CF Open
3479513 Van t Hoff, Tom (2056) FM Duijker, R (2195) 0-1
1.c4 c5 2.Nf3 Nc6 3.e3 Nf6 4.Nc3 e5 5.d4 e4 6.d5 exf3 7.dxc6 fxg2 8.cxd7+ Bxd7 9.Bxg2 Qc7 10.Qc2 g6 11.b3 Bg7 12.Bb2 O-O 13.O-O-O Bg4 14.Nd5 Bxd1 15.Nxc7 Bxc2 16.Nxa8 Be4 17.f3 Ng4 18.Bxg7 Kxg7 19.Nc7 Nxe3 20.Re1 Nxg2 21.Rxe4 h6 22.Nd5 g5 23.Re7 Rb8 24.Kd2 Nh4 25.Ke2 Nf5 26.Rc7 Nd4+ 27.Kf2 Ne6 28.Re7 a6 29.Kg3 b5 30.Ne3 Rd8 31.Ra7 Rd3 32.Nd5 bxc4 33.bxc4 Nd4 34.Rxa6 Nxf3 35.Ne7 Nd4+ 36.Kg4 Rd2 37.h4 Rg2+ 38.Kh3 Rg1 39.hxg5 hxg5 40.Rd6 Re1 41.Nd5 Rh1+ 42.Kg4 Rg1+ 43.Kh5 Ne6 44.a4 Rh1+ 45.Kg4 Rh4+ 46.Kf5 Rxc4 47.a5 Ra4 48.a6 c4 49.Nc3 Ra5+ 50.Kg4 Kg6 51.Rc6 f5+ 52.Kg3 Kf6 53.Rxc4 Rxa6 54.Ne2 Ra3+ 55.Kf2 g4 56.Rc6 Ke5 57.Rc2 f4 58.Rb2 g3+ 59.Kg2 f3+ 60.Kxg3 fxe2+ 61.Kf2 Nd4 62.Rb8 Rf3+ 0-1
2026.07.16 1st Amsterdam CF Open
3479495 FM Duijker, R (2195) FM Labruyere, Roger (2202) 0-1
1.e4 c5 2.d4 cxd4 3.Nf3 d6 4.Nxd4 Nf6 5.Bd3 Nc6 6.Nxc6 bxc6 7.O-O e5 8.c4 Be7 9.Nc3 O-O 10.h3 Be6 11.Qe2 a5 12.Be3 Nd7 13.Rad1 Qb8 14.b3 Qb4 15.Bd2 Qb7 16.Kh1 Nc5 17.Bc2 Rfd8 18.f4 f6 19.Be3 exf4 20.Bxf4 a4 21.Rb1 axb3 22.axb3 Na6 23.Rbd1 Nb4 24.Bb1 Bf7 25.Qf2 Bf8 26.Rd2 Na6 27.Bc2 Nc5 28.Rfd1 Qb4 29.Qg3 Bh5 30.Rb1 Ne6 31.Bd1 Nxf4 32.Qxf4 Qxc3 33.Bxh5 d5 34.exd5 Bd6 35.Qd4 Qg3 36.Qg1 Qg5 37.Qd1 Qe5 38.g3 g6 39.Bf3 Qxg3 40.Qf1 c5 41.Qg2 Qxg2+ 42.Kxg2 Re8 43.Rbb2 Ra3 44.Re2 Re5 45.Rxe5 Bxe5 46.Rd2 Ra6 47.Bg4 Kf7 48.Bd7 Ra3 49.Ba4 Ke7 50.h4 Kd6 51.h5 Ra1 52.hxg6 hxg6 53.Be8 Ra8 54.Bf7 f5 55.Kf3 g5 56.Be6 g4+ 57.Kg2 Rh8 58.Rf2 g3 59.Rxf5 Rh2+ 60.Kf1 g2+ 61.Kg1 Bd4+ 62.Rf2 Bxf2+ 63.Kxf2 g1=B+ 64.Kxg1 Rb2 65.Bg4 Ke5 66.Kf1 Rxb3 67.Kf2 Kf4 68.Bh5 Rb2+ 69.Ke1 Ke3 70.Kd1 Kd3 71.Bg6+ Kxc4 72.d6 Rb6 73.Bf7+ Kb4 74.Kc2 Rxd6 75.Bg8 c4 76.Bf7 Rf6 77.Bg8 Rf2+ 78.Kb1 Kc3 79.Be6 Rf4 80.Kc1 Rf1# 0-1
2026.07.15 1st Amsterdam CF Open
3479477 FM Albers, Sasa (2365) FM Duijker, R (2195) 1/2-1/2
1.c4 Nf6 2.g3 c5 3.Bg2 Nc6 4.Nc3 g6 5.a3 Bg7 6.Rb1 a5 7.d3 O-O 8.Nh3 e6 9.O-O h6 10.Bd2 d6 11.Qc1 Kh7 12.Nf4 Bd7 13.e3 Qe7 14.Qc2 Rfb8 15.b3 Ne8 16.Rfc1 Nc7 17.h4 Kg8 18.Nb5 Nxb5 19.cxb5 Ne5 20.a4 g5 21.hxg5 hxg5 22.Nh5 Bh8 23.Bc3 f5 24.d4 cxd4 25.exd4 Ng4 26.f3 Ne3 27.Qd2 Nd5 28.g4 Be8 29.Ng3 f4 30.Ne4 b6 31.Bb2 Nb4 32.Bf1 Bg6 33.Ra1 d5 34.Nf2 Bf6 35.Nd3 Bxd3 36.Bxd3 Rc8 37.Kg2 Nxd3 38.Qxd3 Qh7 39.Qe2 Kf7 40.Rh1 Qc2 41.Rae1 Rc7 42.Kg1 Qxe2 43.Rxe2 1/2-1/2
2026.07.14 1st Amsterdam CF Open
3479470 Schoehuijs, E (2111) FM Duijker, R (2195) 0-1
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.f3 d5 5.a3 Be7 6.e4 dxe4 7.fxe4 c5 8.d5 exd5 9.exd5 O-O 10.Nf3 Ng4 11.Be2 Bh4+ 12.g3 Bf6 13.O-O Re8 14.Qd3 Nd7 15.Ne4 Nde5 16.Nxe5 Bxe5 17.Ng5 Nf6 18.Be3 h6 19.Nxf7 Kxf7 20.Bh5+ Kg8 21.Bxe8 Qxe8 22.Bxc5 Bh3 23.Rf2 b6 24.Bb4 a5 25.Bd2 Ng4 26.Rf5 Qg6 27.Bc3 Bxc3 28.bxc3 Ne5 0-1
2025.12.30 61st Groningen Open 2025
2146259 FM Duijker, R (2148) FM Sydykov, Bayastan (2366) 1/2-1/2
1.e4 c5 2.Nf3 e6 3.c3 Nf6 4.Bd3 d5 5.e5 Nfd7 6.O-O Nc6 7.Bb5 a6 8.Bxc6 bxc6 9.Re1 Be7 10.d3 a5 11.c4 O-O 12.Nc3 Nb6 13.Na4 Nd7 14.b3 Kh8 15.Bb2 Ba6 16.Bc3 Rg8 17.h3 1/2-1/2
2025.12.29 61st Groningen Open 2025
2146233 FM Korchynskyi, Mykola (2418) FM Duijker, R (2148) 1-0
1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.d3 Bc5 5.Bxc6 dxc6 6.O-O Nd7 7.c3 O-O 8.d4 Bd6 9.Bg5 f6 10.Bh4 Qe8 11.Nbd2 a5 12.Qc2 a4 13.Bg3 b5 14.c4 exd4 15.Nxd4 Nc5 16.f4 Ne6 17.Nf5 Bc5+ 18.Kh1 g6 19.cxb5 Bb6 20.Nh4 Nd4 21.Qd3 cxb5 22.f5 g5 23.Nhf3 Nxf3 24.Nxf3 Bb7 25.e5 Rd8 26.Qe2 Qd7 27.e6 Qd3 28.Rae1 Rfe8 29.Nxg5 Qxe2 30.Rxe2 Bd5 31.Ne4 Kg7 32.Nxf6 Kxf6 33.Bh4+ Kg7 34.Bxd8 Rxd8 35.f6+ Kg6 36.f7 Bc5 37.e7 Bxe7 38.Rxe7 Rf8 39.a3 c6 40.Rc7 h5 41.h3 Kg5 42.Kh2 h4 43.g3 hxg3+ 44.Kxg3 Bc4 45.Rf4 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
2141206 FM Van Foreest, Machteld (2328) FM Duijker, R (2148) 0-1
1.e4 e6 2.d4 d5 3.Nd2 c5 4.exd5 Qxd5 5.dxc5 Nf6 6.Ngf3 Bxc5 7.Bc4 Qc6 8.O-O O-O 9.Qe2 Nbd7 10.c3 a6 11.a4 b6 12.Nb3 Bd6 13.Nbd4 Qc7 14.Bg5 Bb7 15.Rad1 Ne5 16.Nxe5 Bxe5 17.f4 Bxd4+ 18.Rxd4 Rfd8 19.Rxd8+ Rxd8 20.Bxa6 Bxa6 21.Qxa6 Qc5+ 22.Kh1 Rd2 23.Qa8+ Qf8 24.Qb7 Rxb2 25.a5 Qa3 26.f5 bxa5 27.Qc6 Qe7 28.Bxf6 gxf6 29.Qa8+ Kg7 30.Qe4 e5 31.h3 Qb7 32.Qg4+ Kf8 33.Rf3 Qb6 34.Qc4 Rb1+ 35.Kh2 Qg1+ 36.Kg3 Rb2 37.Kh4 Rxg2 38.Qe4 Rg6 39.Qe3 Qxe3 40.Rxe3 Rg5 41.Rf3 Ke7 42.Rf1 Rg8 43.Rb1 Ra8 44.Rb7+ Ke8 45.Kh5 a4 46.Kh6 a3 47.Rb1 a2 48.Ra1 Kf8 49.c4 Ra4 50.h4 e4 51.c5 e3 52.h5 e2 53.c6 e1=Q 54.Rxe1 a1=Q 55.Rxa1 Rxa1 56.Kxh7 Rc1 57.h6 Rxc6 58.Kh8 Rc1 59.h7 Ke7 60.Kg7 Rh1 61.Kg8 Kd6 62.Kxf7 Ke5 63.Kg6 Rxh7 64.Kxh7 Kxf5 0-1
2025.12.26 61st Groningen Open 2025
2141178 FM Duijker, R (2148) FM Smeets, Kobe (2301) 1/2-1/2
1.e4 c5 2.d4 cxd4 3.c3 Nf6 4.e5 Nd5 5.Qxd4 e6 6.Nf3 d6 7.exd6 Qxd6 8.Na3 Nc6 9.Bb5 Bd7 10.Bxc6 Bxc6 11.Nc4 Qc7 12.Nce5 Be7 13.Nxc6 Qxc6 14.Ne5 Qa6 15.Qd3 Qxd3 16.Nxd3 O-O-O 17.Ke2 f6 18.c4 Nc7 19.Be3 Kb8 20.Rhd1 e5 21.Nc5 b6 22.Ne4 f5 23.Bg5 Rde8 24.Rd7 Bd8 25.Rad1 Ne6 26.Bxd8 Nd4+ 27.Kf1 Rxd8 28.Rxd8+ Rxd8 29.Ng5 Rc8 30.b3 h6 31.Nf7 Nc6 32.Rd5 Re8 33.Nd6 Rf8 34.Nb5 Rf7 35.Rd6 Kb7 36.Rg6 Ne7 37.Re6 Kb8 38.Nd6 Rf6 39.Rxe7 Rxd6 40.Rxe5 g6 41.Ke2 Kb7 42.Re7+ Kb8 43.h4 h5 44.g3 a5 45.Kf3 Kc8 46.Ke3 Kb8 47.a3 Rd1 48.Kf4 Rd2 49.f3 Rd4+ 50.Ke3 Rd1 51.Re5 Kb7 52.Rb5 Kc6 53.a4 Rc1 54.Rd5 Rb1 55.Rd3 Kc5 56.Rd5+ Kc6 57.Rb5 Rc1 58.Kf4 Rc3 59.g4 fxg4 60.fxg4 Rh3 61.Kg5 hxg4 62.Kxg4 Rc3 63.Kf4 Rh3 64.Kg5 Rg3+ 65.Kf4 Rh3 66.Kg4 Rc3 67.Kg5 Rg3+ 68.Kf4 1/2-1/2
2025.12.24 61st Groningen Open 2025
2141150 FM Koster, R (2307) FM Duijker, R (2148) 1/2-1/2
1.d4 d5 2.c4 dxc4 3.Nf3 e6 4.e3 b5 5.a4 c6 6.axb5 cxb5 7.b3 Nf6 8.bxc4 bxc4 9.Bxc4 Be7 10.O-O O-O 11.Ba3 Bb7 12.Nbd2 Bxa3 13.Rxa3 a5 14.Qb3 Bd5 15.Rfa1 Nc6 16.Bxd5 Qxd5 17.Qxd5 Nxd5 18.Nb3 Rfb8 19.Nfd2 h5 20.h4 Rb5 21.Nc4 a4 22.Nc5 e5 23.Nd6 Rba5 24.Ndb7 R5a7 25.dxe5 Nxe5 26.Rxa4 Rxa4 27.Rxa4 Rxa4 28.Nxa4 f6 29.Nd6 Ng4 30.e4 Nf4 31.Nc5 g6 32.Nd7 Kg7 33.f3 Ne3 34.g3 Nd3 35.Ne8+ Kf7 36.Nexf6 Ke6 37.f4 Nc4 38.Kg2 Nd2 39.e5 Kf5 40.Nh7 Ne4 41.Ng5 Nxg5 42.fxg5 Ke6 43.Nf8+ Kf7 44.Nd7 Ke6 45.Nf8+ Kf7 46.Nh7 Nxe5 47.Nf6 Ke6 48.Kf2 Kf5 49.Ke3 Nc4+ 50.Kd4 Nd2 51.Nd5 Kg4 52.Ne7 Kxg3 53.Nxg6 Nf3+ 54.Ke4 Nxg5+ 55.hxg5 Kg4 56.Nf4 Kxg5 57.Nxh5 1/2-1/2
2025.12.23 61st Groningen Open 2025
2141121 FM Duijker, R (2148) FM Aakash, G (2300) 1/2-1/2
1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Be7 5.e5 Nfd7 6.h4 Bxg5 7.hxg5 Qxg5 8.Nh3 Qe7 9.Qg4 g6 10.Ng5 h6 11.Bd3 Nc6 12.Nxf7 Kxf7 13.Bxg6+ Kg8 14.Bh5+ Kf8 15.Rh3 Qg5 16.Qf3+ Qf5 17.Nxd5 Nxd4 18.Qxf5+ exf5 19.O-O-O Nc6 20.e6 Nb6 21.e7+ Nxe7 22.Nxc7 Nc6 23.Nxa8 Nxa8 24.Bf3 Ne5 25.Rd8+ Kg7 26.Rxh8 Kxh8 27.Rxh6+ Kg7 28.Rd6 Nb6 29.b3 1/2-1/2
2025.12.22 61st Groningen Open 2025
2129656 Lahaye, R (2390) FM Duijker, R (2148) 1-0
1.Nf3 d5 2.g3 Nc6 3.d4 Bf5 4.c4 e6 5.Bg2 Nf6 6.O-O Be7 7.Nc3 h6 8.Ne5 O-O 9.Bf4 dxc4 10.e4 Bh7 11.Nxc6 bxc6 12.Be3 Rb8 13.Qe2 Qc8 14.Rfc1 Qa6 15.f3 Nd7 16.Bf1 c5 17.Nd1 cxd4 18.Bxd4 c5 19.Bf2 Ne5 20.Ne3 Nd3 21.Rxc4 Nxb2 22.Rc2 Qxe2 23.Bxe2 f5 24.exf5 Bxf5 25.Nxf5 exf5 26.a4 Rb4 27.a5 c4 28.Bxa7 Nd3 29.Rd1 Ra8 30.Bb6 Bd8 31.Bxd8 Rxd8 32.Ra2 Rb3 33.Ra4 Rdb8 34.Rxc4 Nb2 35.Rb1 Kf8 36.Rc7 Na4 37.Rxb3 Rxb3 38.a6 Nc3 39.Bf1 Nd5 40.Rc8+ Ke7 41.a7 Nb6 42.Rb8 1-0
2025.12.21 61st Groningen Open 2025
2129637 FM Duijker, R (2148) FM Maris, Iv (2370) 1-0
1.e4 g6 2.d4 Bg7 3.Nc3 a6 4.h4 h5 5.Bc4 e6 6.Nf3 b5 7.Bd3 Nc6 8.e5 Bb7 9.a4 b4 10.Ne4 Nce7 11.Bg5 d6 12.Qd2 a5 13.Qf4 Bxe4 14.Qxe4 d5 15.Qe2 Nh6 16.O-O O-O 17.Nd2 Qe8 18.Nb3 Nef5 19.Rfe1 Qb8 20.f3 Qb6 21.Qf2 f6 22.exf6 Bxf6 23.Bxh6 Bxh4 24.g3 Bxg3 25.Qg2 Nxd4 26.Nxd4 Qxd4+ 27.Be3 Qh4 28.Bc5 Rf6 29.Be7 Bxe1 30.Bxf6 Qxf6 31.Rxe1 Kg7 32.f4 c5 33.Re5 Rg8 34.Qg5 Rf8 35.Kg2 c4 36.Be2 Qxf4 37.Qxf4 Rxf4 38.Rxe6 Rd4 39.Bf3 Rd2+ 40.Re2 Rxe2+ 41.Bxe2 Kf6 42.Kf2 Ke5 43.Ke3 d4+ 44.Kf3 d3 45.cxd3 c3 46.bxc3 bxc3 47.Ke3 c2 48.Kd2 Kd4 49.Kxc2 Ke3 50.Kd1 h4 51.Ke1 g5 52.Kf1 h3 53.Bg4 h2 54.Kg2 h1=N 55.Kxh1 1-0
2025.07.30 Dutch Open 2025
1213294 Jakhari, Ansh (2110) FM Duijker, R (2158) 1/2-1/2
1.Nf3 Nf6 2.d4 e6 3.e3 b6 4.c4 Bb4+ 5.Bd2 Bxd2+ 6.Nbxd2 Bb7 7.Bd3 d6 8.O-O Nbd7 9.e4 e5 10.d5 a5 11.Bc2 O-O 12.a3 c6 13.b4 c5 14.bxa5 Rxa5 15.a4 Qa8 16.Nh4 Re8 17.Ra3 Nf8 18.Nf5 Qd8 19.Rg3 Ng6 20.Ra3 Bc8 21.g3 Bxf5 22.exf5 Nf8 23.f3 N8d7 24.Re3 h6 25.Re2 Ra7 26.Rg2 Nb8 27.h4 Nh7 28.Ne4 Nf6 29.Nd2 Nh7 30.Qe1 Na6 31.Ne4 Nb4 32.Bb3 Nf6 33.Qe3 1/2-1/2
2025.07.29 Dutch Open 2025
1213275 FM Duijker, R (2158) Blok, Xaveer (1941) 1-0
1.Nf3 d5 2.e3 Nf6 3.b3 e6 4.Bb2 Be7 5.Ne5 Nbd7 6.f4 Nxe5 7.fxe5 Nd7 8.Qh5 O-O 9.Bd3 g6 10.Qh3 c5 11.O-O b6 12.Na3 Bb7 13.c4 a6 14.cxd5 exd5 15.Rf4 Rc8 16.Raf1 Rc6 17.e6 fxe6 18.Bxg6 Bh4 19.Bxh7+ 1-0
2025.07.28 Dutch Open 2025
1213245 De Wit, Evan (2003) FM Duijker, R (2158) 1/2-1/2
1.e4 e6 2.d4 d5 3.exd5 exd5 4.Bd3 Nc6 5.c3 Bd6 6.h3 Nge7 7.Ne2 Ng6 8.O-O O-O 9.Qc2 Qh4 10.f4 f5 11.Kh2 Bd7 12.g3 Qh5 13.Nd2 Rae8 14.Nf3 Re6 15.Bd2 Nge7 16.Kg2 Kh8 17.Ne5 Bc8 18.Rae1 Rh6 19.Rh1 Ng8 20.g4 Qe8 21.g5 Re6 22.Ng3 Nge7 23.h4 Bxe5 24.fxe5 f4 25.Nf5 Qh5 26.Kf2 Nxf5 27.Bxf5 Re7 28.Bxc8 Rxc8 29.Qd1 Qxd1 30.Rxd1 Nd8 31.b3 Ne6 32.Bc1 c6 33.Rh3 Rf7 34.a4 Kg8 35.Rf3 Kf8 36.Kg2 Kg8 37.Rdf1 Rcf8 38.Kh3 h5 39.Bd2 Kh7 40.Bc1 Kg6 41.Kg2 b6 42.b4 a6 43.R3f2 Rf5 44.Rf3 Kh7 45.R3f2 g6 46.Rf3 Kg8 47.R3f2 R8f7 48.Ba3 Ra7 49.Bc1 Raf7 50.Ba3 b5 51.a5 f3+ 52.Rxf3 Ng7 53.Rxf5 Nxf5 54.Kh3 Kf8 55.Bc1 Ke7 56.Bf4 Ng7 57.Rf3 Rf5 58.Kg3 Ke6 59.Bd2 Rxf3+ 60.Kxf3 Kf5 61.Be3 Ne6 62.Bd2 Ng7 63.Be3 Ne6 64.Bd2 Ng7 1/2-1/2
2025.07.27 Dutch Open 2025
1704 FM Duijker, R (2158) Van t Hoff, Tom (2047) 1/2-1/2
1.e4 c5 2.Nf3 Nc6 3.Bb5 g6 4.O-O Bg7 5.Re1 e5 6.Bxc6 dxc6 7.a4 a5 8.Na3 Qc7 9.d3 Ne7 10.Nc4 Be6 11.b3 h6 12.Be3 b6 13.Qc1 Bxc4 14.bxc4 f5 15.Bd2 f4 16.Qb2 g5 17.Rab1 Ra6 18.h4 Ng6 19.h5 Nf8 20.Bc3 Nd7 21.Nh2 O-O 22.Ng4 Raa8 23.Qc1 Qd8 24.Qd1 Rb8 25.Qf3 Qe7 26.Qh3 Rb7 27.Rb3 Rfb8 28.Reb1 Ra7 29.g3 Rf8 30.Bd2 Qd6 31.Re1 Raa8 32.Qg2 Qe6 33.Qh3 Rf7 34.Rbb1 Raf8 35.Kg2 fxg3 36.Rf1 gxf2 37.Be3 Rf3 38.Qxf3 Rxf3 39.Kxf3 Qf7+ 40.Kg3 Qxh5 41.Rh1 Qf7 42.Rbf1 h5 43.Nxf2 Qg6 44.Nh3 h4+ 45.Kh2 g4 46.Ng5 Nf6 47.Rf5 Nh5 48.Rg1 Ng3 49.Rxg3 hxg3+ 50.Kxg3 Qh5 51.Rf2 Bh6 52.Rh2 Qg6 53.Kxg4 Bxg5 1/2-1/2
2025.07.26 Dutch Open 2025
1666 FM Kurt, Sascha (2303) FM Duijker, R (2158) 1-0
1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 g6 5.c4 Nf6 6.Nc3 d6 7.f3 Nxd4 8.Qxd4 Bg7 9.Be3 O-O 10.Qd2 Be6 11.Rc1 Qa5 12.b3 a6 13.Nd5 Qxd2+ 14.Kxd2 Bxd5 15.cxd5 Rfc8 16.Rxc8+ Rxc8 17.g3 Nd7 18.Bh3 Bc3+ 19.Ke2 Rd8 20.Rc1 Ba5 21.a3 Kf8 22.b4 Bb6 23.Bxd7 Bxe3 24.Kxe3 Rxd7 25.Rc8+ Kg7 26.Kd4 e5+ 27.Kc4 Kf6 28.b5 Ke7 29.Kb4 h5 30.Ka5 axb5 31.Kxb5 h4 32.Kb6 hxg3 33.hxg3 Kf6 34.Rc7 Rd8 35.Kxb7 Rh8 36.Rc3 Rh3 37.g4 Rh1 38.Kc6 Ke7 39.a4 Ra1 40.Kb5 Rb1+ 41.Ka6 Kd7 42.a5 f6 43.Ka7 Ra1 44.a6 Rb1 45.Rc6 Rb3 46.Rb6 Rxf3 47.Kb7 1-0
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
1614 FM Duijker, R (2158) Gergin, Isafara (1968) 1-0
1.e4 c6 2.Nf3 d5 3.d3 dxe4 4.dxe4 Qxd1+ 5.Kxd1 Nf6 6.Nbd2 Nbd7 7.Ne1 g5 8.Nd3 h5 9.h3 Bh6 10.a4 Nf8 11.Be2 Bg7 12.a5 Ne6 13.c3 Bd7 14.Kc2 O-O-O 15.Re1 Be8 16.Bf1 Nd7 17.Nc4 f6 18.Ne3 Ndc5 19.Nf5 Bf8 20.Be3 Nxd3 21.Bxd3 Nf4 22.Bf1 e6 23.Nd4 Bf7 24.a6 c5 25.axb7+ Kxb7 26.Nb3 Kb8 27.Nxc5 Bxc5 28.Bxc5 Rd7 29.Red1 Rhd8 30.Bxa7+ Kc7 31.Rxd7+ Rxd7 32.Bb5 Rd6 33.Bc5 1-0
2025.07.23 Dutch Open 2025
1584 FM Duijker, R (2158) Breuker, D (2054) 1-0
1.e4 e5 2.f4 exf4 3.Nf3 Ne7 4.Nc3 d5 5.d4 dxe4 6.Nxe4 Nd5 7.Nc3 Ne3 8.Bxe3 fxe3 9.Bc4 Nd7 10.O-O f6 11.Qd3 Nb6 12.Rae1 Nxc4 13.Qxc4 Qd7 14.Rxe3+ Kd8 15.d5 Bd6 16.Nd4 Qf7 17.Ne4 Bd7 18.Nxd6 cxd6 19.Ne6+ Bxe6 20.Rxe6 Qc7 21.Qxc7+ Kxc7 22.Re7+ Kb6 23.Rxg7 Rac8 24.c3 Rc5 25.Rf4 Rxd5 26.Rb4+ Kc6 27.Rbxb7 Rd2 28.a4 Re8 29.Rgc7+ Kd5 30.Rb5+ Ke4 31.Rxh7 Rd1+ 32.Kf2 Rd2+ 33.Kf1 Rc2 34.Rh4+ Ke3 35.Rh3+ Ke4 36.Rg3 Rc1+ 37.Ke2 Kf4+ 38.Kd3 Rd1+ 39.Kc2 Ree1 40.Rf3+ Ke4 41.Rxf6 Rg1 42.Rb4+ Ke5 43.Rf2 Kd5 44.h4 Rh1 45.Rd2+ Rxd2+ 46.Kxd2 Rh2 47.Rg4 Ke5 48.Ke3 1-0
2025.07.22 Dutch Open 2025
1536 GM Flom, Gabriel (2455) FM Duijker, R (2158) 1-0
1.d4 Nf6 2.c4 c5 3.d5 b5 4.cxb5 a6 5.e3 axb5 6.Bxb5 Qa5+ 7.Nc3 Bb7 8.Bd2 Qb6 9.a4 Nxd5 10.Nf3 e6 11.O-O Be7 12.e4 Nb4 13.Bf4 O-O 14.Ne5 d5 15.exd5 exd5 16.Re1 Bf6 17.Qe2 c4 18.Bg3 Bxe5 19.Qxe5 N8c6 20.Nxd5 Nxd5 21.Qxd5 Nd4 22.Qd6 Ne2+ 23.Rxe2 Qxb5 24.Qa3 Qd5 25.f3 Rfe8 26.Rxe8+ Rxe8 27.a5 Re2 28.a6 Ba8 29.Bf2 h5 30.a7 Kh7 31.Qc3 Qb5 32.Rb1 Qf5 33.Rc1 Bd5 34.h4 Qg6 35.Kf1 Re8 36.Rd1 Qc6 37.Kg1 Re2 38.Ra1 Qe8 39.Ra5 Qd8 40.Ra1 Qc8 41.b3 Qf5 42.bxc4 Ba8 43.Rd1 1-0
2025.07.13 Science Park Open A 2025
18700 FM Duijker, R (2158) FM Van Hesselingen, Guido (2303) 1-0
1.e4 e5 2.f4 d5 3.exd5 exf4 4.Nf3 Qxd5 5.Nc3 Qe6+ 6.Be2 Bd6 7.O-O Ne7 8.d4 O-O 9.Ng5 Qd7 10.Bc4 Qf5 11.Nge4 Ng6 12.Nxd6 cxd6 13.Nd5 Be6 14.Rxf4 Qg5 15.Rxf7 Qh4 16.g3 Qd8 17.Rxf8+ Nxf8 18.Qh5 Nc6 19.c3 Qd7 20.Bd2 Re8 21.Rf1 Ng6 22.Bb3 Na5 23.Nf6+ gxf6 24.Qxa5 Bxb3 25.axb3 Kg7 26.Qh5 Re6 27.Bh6+ Kg8 28.Qg4 Qe7 29.h4 Re4 30.Qc8+ Kf7 31.h5 Nf8 32.Bxf8 Qxf8 33.Rxf6+ 1-0
2025.07.09 Science Park Open A 2025
18659 FM Duijker, R (2158) Van Batenburg, Mees (2198) 0-1
1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.e5 c5 5.a3 Bxc3+ 6.bxc3 Nc6 7.Qg4 g6 8.h4 h6 9.Qf4 Qa5 10.Bd2 c4 11.a4 Bd7 12.Ne2 Nge7 13.g4 O-O-O 14.Qxf7 Rdf8 15.Qg7 Qd8 16.h5 gxh5 17.Rxh5 Qe8 18.Rxh6 Rhg8 19.Qh7 Rf7 20.Ng1 0-1
2025.07.08 Science Park Open A 2025
18648 FM Van Baar, Esper (2232) FM Duijker, R (2158) 1-0
1.e4 c5 2.Nf3 Nc6 3.Bb5 d6 4.h3 Nf6 5.e5 dxe5 6.Bxc6+ bxc6 7.Nxe5 Qd5 8.Nf3 Qe4+ 9.Kf1 g6 10.d3 Qe6 11.Qe2 Bg7 12.Na3 Nd5 13.Qxe6 Bxe6 14.Ng5 Bf5 15.Ne4 Bxe4 16.dxe4 Nb6 17.c3 Rb8 18.Ke2 Na4 19.Nc4 Nb6 20.Bf4 Rc8 21.Nd2 Na4 22.Rab1 O-O 23.Kd3 Rfd8+ 24.Kc2 Rd7 25.Nb3 e5 26.Be3 Bf8 27.Na5 Rdc7 28.Nc4 f6 29.Rbd1 Rb8 30.Rd2 Rb5 31.Rhd1 Nb6 32.Nxb6 axb6 33.Rd8 Kf7 34.Ra8 c4 35.Rdd8 Bc5 36.Rh8 Ke6 37.Rae8+ Kd6 38.Bh6 Rd7 39.Bf8+ Kc7 40.a4 Ra5 41.Bxc5 Rxc5 42.Rc8+ Kd6 43.Rhf8 Ke6 44.Rce8+ Re7 45.Rxe7+ Kxe7 46.Rb8 Kd6 47.Rxb6 Kc7 48.Rb4 h5 49.h4 Kc8 50.Kb1 Kc7 51.Ka2 Kc8 52.Ka3 Kc7 53.f3 f5 54.Ka2 Kc8 55.Kb1 Kc7 56.Ka1 Kc8 57.Ka2 Kc7 58.Ka3 f4 59.Ka2 Kc8 60.Kb1 Kc7 61.Ka1 Kc8 62.Ka2 Kc7 63.Ka3 Ra5 64.Rxc4 Ra8 65.b4 Kd6 66.Rc5 g5 67.hxg5 Rg8 68.a5 Rxg5 69.a6 Rxg2 70.a7 Rg8 71.Ra5 Ra8 72.Kb3 h4 73.Kc4 h3 74.Ra2 h2 75.Rxh2 1-0
2025.07.07 Science Park Open A 2025
18635 FM Duijker, R (2158) IM Goudriaan, E (2322) 1/2-1/2
1.e4 c5 2.Nf3 d6 3.Bb5+ Nd7 4.c3 Nf6 5.Qe2 a6 6.Ba4 b5 7.Bc2 Bb7 8.O-O e6 9.d4 Be7 10.a4 O-O 11.Re1 Qb6 12.Bg5 e5 13.d5 c4 14.Nbd2 Nc5 15.h3 Rfb8 16.Be3 Qc7 17.Nh2 Bc8 18.Nhf1 Bd7 19.axb5 axb5 20.Ng3 Ra7 21.Rxa7 Qxa7 22.b4 cxb3 23.Nxb3 Qa2 24.Bxc5 dxc5 25.d6 Bxd6 26.Ra1 Qb2 27.Qd2 c4 28.Rb1 Qa3 29.Ra1 Qb2 30.Rb1 Qa3 31.Ra1 Qb2 1/2-1/2
2024.12.30 60th Groningen Open 2024
239122 FM Duijker, R (2146) FM Slagboom, Leandro (2370) 0-1
1.c4 Nf6 2.Nf3 g6 3.Nc3 Bg7 4.e4 d6 5.d4 O-O 6.Be2 Na6 7.O-O e5 8.Be3 Qe7 9.dxe5 dxe5 10.Nd5 Qd8 11.Bg5 c6 12.Nxf6+ Bxf6 13.Qxd8 Bxd8 14.Be3 Bb6 15.Bxb6 axb6 16.Nxe5 Re8 17.Nf3 Rxe4 18.Bd3 Re8 19.Rfe1 Be6 20.a3 Nc5 21.Bf1 Nb3 22.Rad1 Red8 23.h3 h6 24.g4 g5 25.Kg2 Kg7 26.Kg3 Kf6 27.h4 gxh4+ 28.Nxh4 Nd2 29.Be2 Ra4 30.Nf3 Nxf3 31.Kxf3 Rxd1 32.Rxd1 Bxc4 33.Rd7 Bd5+ 34.Kg3 Rd4 35.b4 Rd2 36.Bf1 Ra2 37.Rxb7 Rxa3+ 38.Kh4 b5 39.f4 Rb3 40.Bxb5 cxb5 41.Rxb5 Be6 42.f5 Bc4 43.Rb6+ Kg7 44.Kh5 Rh3# 0-1
2024.12.29 60th Groningen Open 2024
239095 FM Duijker, R (2146) FM Schoorl, R (2295) 1/2-1/2
1.d4 Nf6 2.Bf4 c5 3.e3 Qb6 4.Na3 Qxb2 5.Nb5 Nd5 6.Rb1 Qxa2 7.Ra1 Qb2 8.Rb1 Qa2 9.Ra1 Qb2 10.Rb1 Qa2 11.Ra1 1/2-1/2
2024.12.28 60th Groningen Open 2024
239061 Labruyere, Roger (2344) FM Duijker, R (2146) 1-0
1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.e5 c5 5.a3 Bxc3+ 6.bxc3 Ne7 7.Qg4 O-O 8.Bd3 Nbc6 9.h4 c4 10.Bh6 Ng6 11.Bxg6 fxg6 12.Be3 Qe8 13.h5 gxh5 14.Rxh5 Ne7 15.Ne2 Rf5 16.Rh3 Qg6 17.Qxg6 Nxg6 18.Kd2 Bd7 19.Rah1 h6 20.Ng3 Rff8 21.Nh5 Be8 22.Nxg7 Kxg7 23.Bxh6+ Kg8 24.Bxf8 Nxf8 25.Rh8+ Kg7 26.f4 Bg6 27.g4 Re8 28.R8h2 Nh7 29.Rf2 Rf8 30.Rhf1 Be4 31.Ke3 Kg6 32.Rb1 Rf7 33.a4 Nf8 34.f5+ exf5 35.gxf5+ Rxf5 36.Rxf5 Bxf5 37.Rxb7 Bxc2 38.Rxa7 Ne6 39.a5 Ba4 40.Re7 Ng7 41.Rb7 Nf5+ 1-0
2024.12.27 60th Groningen Open 2024
239038 FM Duijker, R (2146) IM Grooten, H (2183) 1-0
1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.c3 dxc3 5.Nxc3 a6 6.Be2 Nc6 7.O-O Nge7 8.Be3 b5 9.Qd2 Ng6 10.Rfd1 Be7 11.Rac1 O-O 12.h4 Nxh4 13.Nxh4 Bxh4 14.g3 Be7 15.Kg2 Qa5 16.a3 b4 17.axb4 Qxb4 18.Rh1 Bb7 19.Rh5 Bf6 20.Bc5 Qb3 21.Bd1 Qc4 22.b3 Bxc3 23.Rxc3 Qxe4+ 24.Bf3 Qg6 25.Bxf8 Rxf8 26.Qxd7 Nd8 27.Rhc5 Bxf3+ 28.Rxf3 f5 29.Rc8 Qg5 30.Rd3 Nf7 31.Rxf8+ Kxf8 32.Qc8+ Ke7 33.Rd7+ Kf6 34.Qf8 1-0
2024.12.26 60th Groningen Open 2024
239009 Ivanov, Dmytro FM Duijker, R (2146) 0-1
1.c4 Nf6 2.g3 c5 3.Bg2 Nc6 4.Nc3 g6 5.d3 Bg7 6.e4 d6 7.Nge2 h5 8.Bg5 Nh7 9.Be3 Nf8 10.h3 Ne6 11.f4 Ned4 12.O-O Nxe2+ 13.Qxe2 Bd4 14.f5 g5 15.f6 exf6 16.Bxd4 Nxd4 17.Qf2 Be6 18.Rae1 Rh6 19.h4 gxh4 20.Qf4 Rg6 21.Nd5 Bxd5 22.exd5+ Kd7 23.Qxh4 f5 24.Qxh5 Qf6 25.Re3 Rag8 26.Bh3 Rg5 27.Qd1 Rxg3+ 28.Rxg3 Rxg3+ 29.Bg2 Qg5 30.Rf2 a6 31.Qa4+ Kc7 32.Qe8 Rxd3 33.Qxf7+ Kb8 34.Qf8+ Ka7 35.Qxd6 Rd1+ 36.Rf1 Rxf1+ 37.Kxf1 Qc1+ 38.Kf2 Qxb2+ 39.Kg1 Qc1+ 40.Kh2 Qxc4 41.Qf4 Qe2 42.Qc7 Nf3+ 43.Kg3 Qe5+ 44.Qxe5 Nxe5 45.Kf4 Nc4 46.Bf1 b5 47.Bxc4 bxc4 48.Kxf5 c3 49.d6 Kb7 50.Ke6 c2 51.d7 c1=Q 52.d8=Q Qe3+ 53.Kf5 Qf3+ 54.Ke5 Qc6 55.Qf8 Kb6 56.Qb8+ Ka5 57.Qb2 Qa4 58.Kd5 Qb4 59.Qg7 Ka4 60.Qg1 c4 61.Qd1+ Kb5 62.Qc1 c3 63.Qf1+ Ka4 64.Ke6 Qe4+ 65.Kd6 Qd4+ 66.Kc6 Qe4+ 67.Kd6 c2 68.Qxa6+ Kb4 69.Qb6+ Kc3 70.Qb3+ Kd2 0-1
2024.12.24 60th Groningen Open 2024
238982 FM Duijker, R (2146) Groenewoud, Joel (2058) 1/2-1/2
1.d4 Nf6 2.Bg5 d5 3.e3 c5 4.Bxf6 gxf6 5.c4 dxc4 6.Bxc4 cxd4 7.exd4 Nc6 8.Nf3 Bg4 9.d5 Qa5+ 10.Nc3 O-O-O 11.Be2 Nb4 12.O-O Nxd5 13.Nxd5 Rxd5 14.Qc1+ Qc7 15.Qe3 Kb8 16.Rac1 Qd7 17.Qf4+ Rd6 18.Rfd1 e5 19.Nxe5 fxe5 20.Qxe5 f6 21.Bxg4 fxe5 22.Bxd7 Rxd1+ 23.Rxd1 Kc7 24.Bf5 Bd6 25.Rc1+ Kb6 26.Rc3 a5 27.Be4 a4 28.g3 h6 29.Rf3 Rf8 30.Rxf8 Bxf8 31.Kg2 a3 32.bxa3 Bxa3 33.Kh3 Kc7 34.Kg4 Bc5 35.Kh5 Bf8 36.h4 b6 37.g4 Kd7 38.g5 hxg5 39.hxg5 Ke6 40.f3 Bc5 41.Kg6 Be3 42.Bc2 Ke7 43.Bb3 Kf8 44.Bd5 Bd2 45.Kf6 Bc3 46.Be4 Bd2 47.g6 Bh6 48.Bd5 Bg7+ 49.Ke6 Bh6 50.Kxe5 Bg7+ 51.Ke6 Bc3 52.f4 Kg7 53.Be4 Bb2 54.a4 Bc3 55.Kd5 Bb2 56.Bd3 Ba1 57.Kd6 Bb2 58.Kc6 Bd4 59.Kb5 Be3 60.Kc6 Bd4 61.Kb5 Be3 1/2-1/2
2024.12.22 60th Groningen Open 2024
245357 Madularea, David (2245) FM Duijker, R (2146) 1-0
1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O Nxe4 5.Re1 Nd6 6.Nxe5 Nxe5 7.Rxe5+ Be7 8.Bf1 O-O 9.d4 Bf6 10.Bd3 g6 11.Nc3 Bg7 12.Qf3 Ne8 13.Bc4 d6 14.Bg5 Qd7 15.Re7 Qf5 16.Qe3 Bxd4 17.Qxd4 Qxg5 18.Bxf7+ Rxf7 19.Rxe8+ Rf8 20.Rxf8+ Kxf8 21.Qh8+ 1-0
2024.12.21 60th Groningen Open 2024
245321 FM Duijker, R (2146) WGM Dolzhykova, Kateryna (2322) 0-1
1.d4 Nf6 2.Bg5 Ne4 3.Bf4 c5 4.f3 Qa5+ 5.c3 Nf6 6.d5 e6 7.e4 exd5 8.exd5 d6 9.Qe2+ Be7 10.Bxd6 Nxd5 11.Bxe7 Nxe7 12.Qb5+ Qxb5 13.Bxb5+ Nbc6 14.Nd2 O-O 15.O-O-O Ne5 16.Nc4 a6 17.Nb6 axb5 18.Nxa8 Bf5 19.Nb6 Nd3+ 20.Rxd3 Bxd3 21.Nh3 Ng6 22.Rd1 Bf5 23.Rd5 Bxh3 24.gxh3 Nf4 25.Rd7 Re8 26.Rxb7 h5 27.Nd7 Re1+ 28.Kc2 Re2+ 29.Kb3 c4+ 30.Ka3 Rxh2 31.Rb8+ Kh7 32.Rxb5 Rxh3 33.Kb4 h4 34.a4 Rxf3 35.Ne5 Nd3+ 36.Nxd3 cxd3 37.Rh5+ Kg6 38.Rxh4 Kf5 39.a5 Rf4+ 40.Rxf4+ Kxf4 41.a6 d2 42.a7 d1=Q 43.a8=Q Qd6+ 44.Kc4 g5 45.b4 g4 46.b5 g3 47.Qc6 Ke5 48.Qf3 Qg6 49.Qe3+ Qe4+ 50.Qxe4+ Kxe4 51.b6 g2 52.b7 g1=Q 53.b8=Q Qf1+ 54.Kc5 Qf2+ 55.Kc4 Qa2+ 56.Kc5 Qd5+ 57.Kb4 f5 58.Qe8+ Kd3 59.Qc8 Qd6+ 60.Kb5 Qe5+ 61.Kb4 f4 62.Qh3+ Qe3 63.Qf1+ Ke4 64.Qc4+ Kf3 65.Qf1+ Kg3 66.c4 f3 67.Kb5 f2 68.c5 Kh2 69.Qd1 Qh3 70.Qd2 Qg2 71.Qh6+ Kg1 72.Qe3 Qb7+ 73.Ka5 Qd5 74.Kb6 Kg2 75.Qe2 Qb3+ 76.Ka6 Qa4+ 77.Kb7 Qb4+ 78.Kc6 Qd4 79.Qc2 Qf6+ 80.Kb7 Kg1 81.c6 f1=Q 82.Qc5+ Kg2 83.Qc2+ Kh3 84.Qh7+ Kg3 85.Qg8+ Kh4 86.Qh7+ Kg5 87.Qg8+ Kh6 88.Qb3 Q1f3 89.Qc4 Qe7+ 90.Kb6 Qfe3+ 0-1
2024.11.02 27th Hoogeveen Open 2024
306740 Kukushkin, Ivan (2084) FM Duijker, R (2154) 1/2-1/2
1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O Nxe4 5.d4 Nd6 6.dxe5 Nxb5 7.a4 Nbd4 8.Nxd4 Nxd4 9.Qxd4 d5 10.exd6 Qxd6 11.Qe4+ Qe6 12.Qd4 Qd6 13.Qe4+ 1/2-1/2
2024.11.01 27th Hoogeveen Open 2024
306706 FM Duijker, R (2154) FM Plukkel, S (2210) 1/2-1/2
1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.c3 dxc3 5.Nxc3 g6 6.Bc4 Bg7 7.O-O d6 8.e5 Nxe5 9.Nxe5 Bxe5 10.Qb3 e6 11.Re1 Bd7 12.Rxe5 dxe5 13.Be3 Rc8 14.Rd1 Nf6 15.Bg5 h6 16.Rxd7 Kxd7 17.Qb5+ Ke7 18.Qxb7+ Rc7 19.Qb4+ Ke8 20.Bb5+ Rd7 21.Bxf6 Qxf6 22.Qd6 Qe7 23.Qxe5 Rg8 24.Ne4 Kf8 25.Bxd7 Qxd7 26.Qb8+ Ke7 27.Qb4+ Kd8 28.Qb8+ Ke7 29.Qb4+ Kd8 30.Qb8+ 1/2-1/2
2024.10.31 27th Hoogeveen Open 2024
306678 Ten Dam, Bram (2006) FM Duijker, R (2154) 1/2-1/2
1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.d3 Bc5 5.c3 d6 6.O-O a5 7.h3 h6 8.d4 Bb6 9.Re1 O-O 10.dxe5 dxe5 11.Nbd2 Qe7 12.a4 Be6 13.Bxe6 Qxe6 14.Qb3 Qxb3 15.Nxb3 Rad8 16.Nbd2 Bc5 17.Nc4 Rfe8 18.g4 Rd3 1/2-1/2
2024.10.30 27th Hoogeveen Open 2024
306647 FM Duijker, R (2154) Emans, Job (2118) 1/2-1/2
1.c4 e6 2.Nf3 Nf6 3.g3 d5 4.Bg2 Be7 5.O-O O-O 6.b3 c5 7.Bb2 Nc6 8.cxd5 Nxd5 9.Nc3 Bf6 10.Qc1 b6 11.Nxd5 exd5 12.d4 Nxd4 13.Nxd4 cxd4 14.Qd2 Ba6 15.Rfe1 Re8 16.Bxd4 Bxd4 17.Qxd4 Rxe2 18.Rxe2 Bxe2 19.Re1 Ba6 20.Bxd5 Bb7 21.Rd1 Bxd5 22.Qxd5 Qxd5 23.Rxd5 a5 24.Rd7 Rb8 25.Kf1 g6 26.g4 h6 27.h4 Kg7 28.g5 hxg5 29.hxg5 Re8 30.Rd6 Re5 31.Rxb6 Rxg5 32.a4 Rc5 33.Rb5 Rc3 34.Ke2 Kh6 35.f4 f5 36.Rxa5 1/2-1/2
2024.10.29 27th Hoogeveen Open 2024
306588 FM Duijker, R (2154) IM Bosboom, M (2354) 1/2-1/2
1.c4 g6 2.Nc3 Bg7 3.Nf3 d6 4.d4 Nf6 5.e4 O-O 6.Be2 Nbd7 7.O-O e5 8.Be3 exd4 9.Nxd4 c6 10.Qc2 Re8 11.Rad1 a6 12.Rfe1 Qe7 13.Bf1 Ng4 14.Bf4 Be5 15.Qd2 Qf6 16.Bg5 Bxh2+ 17.Kh1 Qxf2 18.Qxf2 Nxf2+ 19.Kxh2 Nxd1 20.Rxd1 Nc5 21.Bd3 Bg4 22.Nf3 b5 23.b4 Nxd3 24.Rxd3 a5 25.a3 axb4 26.axb4 bxc4 27.Rxd6 Re6 28.Rd4 f6 29.Bf4 g5 30.Bc7 Ra3 31.Rxc4 Bxf3 32.gxf3 Rb3 33.Kg3 h5 34.Ne2 g4 35.Nc3 gxf3 36.Kxf3 Kf7 37.Kf4 h4 38.Kg4 Rxc3 1/2-1/2
2024.10.28 27th Hoogeveen Open 2024
306568 Vaupot, Kajetan (1870) FM Duijker, R (2154) 0-1
1.d4 Nf6 2.c4 e6 3.g3 Bb4+ 4.Bd2 c5 5.Nf3 Qb6 6.e3 Nc6 7.dxc5 Bxc5 8.Nc3 Qc7 9.Bg2 O-O 10.O-O a6 11.Qe2 d6 12.a3 Ba7 13.Rfd1 Na5 14.Bf1 Nb3 15.Rab1 e5 16.Qd3 Bg4 17.Nd5 Nxd5 18.Qxd5 Qc6 19.Qxc6 bxc6 20.Be2 Bf5 21.Bb4 Bxb1 22.Rxb1 Bc5 23.Bd1 a5 24.Bxb3 axb4 25.a4 f5 26.Bc2 f4 27.gxf4 exf4 28.e4 Ra7 29.b3 g5 30.Kg2 h6 31.Rd1 Re7 32.Rd2 Kg7 33.Rd1 Kf6 34.Rd2 Re6 35.Rd1 g4 36.Nd4 Bxd4 37.Rxd4 Ke5 38.Rd2 h5 39.Bd3 Kd4 40.c5 Kc3 41.Bc4 Rxe4 42.Rd3+ Kc2 43.Rxd6 Rxc4 44.bxc4 b3 45.Re6 b2 46.Re2+ Kc1 47.Re1+ Kd2 48.Kf1 f3 49.Rb1 Kc2 0-1
2024.10.27 27th Hoogeveen Open 2024
315546 FM Duijker, R (2154) Labruyere, Roger (2286) 0-1
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Bg5 e6 7.f4 h6 8.Bh4 Qb6 9.a3 Be7 10.Bf2 Qc7 11.Be2 Nbd7 12.Bf3 Rb8 13.O-O O-O 14.g4 Nh7 15.h4 Rd8 16.g5 hxg5 17.hxg5 Ndf8 18.Nf5 Ng6 19.Nxe7+ Qxe7 20.Qd2 b5 21.Be3 Bb7 22.Bg2 d5 23.exd5 Nh4 24.Bb6 Rd7 25.Rae1 b4 26.axb4 Nxg2 27.Qxg2 Qxb4 28.Ba7 Rbd8 29.g6 Nf6 30.gxf7+ Rxf7 31.Qg5 Bxd5 32.Be3 Qxb2 33.Nxd5 Rxd5 34.f5 Ne4 35.Qh4 exf5 36.Rb1 Qe5 37.c4 Nd2 38.cxd5 Qxe3+ 39.Kg2 Nxb1 40.Rxb1 Qd2+ 41.Kg1 Qxd5 42.Rb8+ Rf8 0-1
2024.10.26 27th Hoogeveen Open 2024
315534 Westerhof, Fleur (1904) FM Duijker, R (2154) 0-1
1.e4 e6 2.d4 d5 3.e5 c5 4.c3 Nc6 5.Nf3 Bd7 6.a3 f6 7.Be2 fxe5 8.Nxe5 Nxe5 9.dxe5 Qc7 10.Bf4 O-O-O 11.Nd2 Nh6 12.Bxh6 gxh6 13.f4 Rg8 14.g3 Bc6 15.Bf3 h5 16.Qc2 h4 17.O-O-O Qg7 18.c4 hxg3 19.Rhg1 g2 20.Rxg2 Qh8 21.Rxg8 Qxg8 22.cxd5 exd5 23.h3 Qg3 24.Qf5+ Kb8 25.Qg4 Qf2 26.f5 c4 27.Qf4 c3 28.bxc3 Bxa3+ 29.Kc2 d4 30.e6+ Ka8 31.Qc7 Ba4+ 32.Kb1 Rb8 33.e7 Bxe7 34.Qxe7 Bxd1 35.Bxd1 Qxd2 36.Bc2 dxc3 37.f6 Rg8 38.Qxh7 Rg1+ 39.Ka2 Qd5+ 40.Bb3 Qa5+ 0-1
2024.08.09 26th HZ Open 2024
419882 FM Duijker, R (2186) Ellenbroek, T (2001) 1-0
1.Nf3 c5 2.g3 d5 3.c4 e6 4.cxd5 exd5 5.d4 Nc6 6.Nc3 Nf6 7.Bg2 cxd4 8.Nxd4 Bc5 9.Nb3 Bb6 10.O-O d4 11.Na4 O-O 12.Bg5 h6 13.Bxf6 Qxf6 14.Nxb6 axb6 15.Bxc6 bxc6 16.Qxd4 Qxd4 17.Nxd4 c5 18.Nb5 Be6 19.Nc3 Rfd8 20.Rfd1 b5 21.Nxb5 Rxd1+ 22.Rxd1 Rxa2 23.Rd8+ Kh7 24.Rd2 g5 25.f3 h5 26.Kf2 Ra1 27.Nc3 Kg6 28.e4 Rh1 29.Kg2 Rc1 30.f4 gxf4 31.gxf4 Bc4 32.Kg3 Rf1 33.Rd6+ Kg7 34.Rc6 h4+ 35.Kxh4 Rxf4+ 36.Kg3 Rf1 37.Rxc5 Be6 38.b4 Rg1+ 39.Kf2 Rh1 40.Kg2 Rc1 41.h4 Rc2+ 42.Kf3 Rb2 43.b5 f6 44.Rc6 Bh3 45.b6 f5 46.Kg3 Bg2 47.Nd1 1-0
2024.08.07 26th HZ Open 2024
419800 FM Duijker, R (2186) WFM Hng, Mei-Xian Eunice (2019) 0-1
1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.Be3 Bg7 5.Qd2 c6 6.f3 b5 7.O-O-O b4 8.Nce2 a5 9.Kb1 Qc7 10.g4 h5 11.g5 Nfd7 12.f4 Nb6 13.Nc1 Ba6 14.f5 Bxf1 15.Rxf1 Nc4 16.Qe2 Nxe3 17.Qxe3 Nd7 18.Nge2 c5 19.fxg6 fxg6 20.Qb3 c4 21.Qh3 Nf8 22.Rf2 Qd7 23.Qe3 O-O-O 24.Rf7 Rg8 25.d5 Kb7 26.Nd4 Bxd4 27.Qxd4 Qc7 28.Ne2 Re8 29.c3 Nd7 30.cxb4 axb4 31.Qd2 Qb6 32.Rc1 Ne5 33.Rff1 Rgf8 34.Qd4 Rf3 35.Qxb6+ Kxb6 36.Nd4 Re3 37.Nc2 Rxe4 38.Nxb4 Rg4 39.Rg1 Rxg1 40.Rxg1 Rf8 0-1
2024.08.06 26th HZ Open 2024
419764 Gosman, T (2003) FM Duijker, R (2186) 1/2-1/2
1.d4 e6 2.e4 d5 3.Be3 dxe4 4.f3 Nf6 5.Nd2 Nd5 6.Qe2 c5 7.dxc5 Qa5 8.fxe4 Nxe3 9.Qxe3 Bxc5 10.Qb3 Bf2+ 11.Kxf2 Qxd2+ 12.Ne2 O-O 13.Qc3 Qxc3 14.Nxc3 Rd8 15.Be2 Nc6 16.Rhd1 Bd7 17.Rd2 Kf8 18.Rad1 Ke7 19.Na4 Ne5 20.Nc5 b6 21.Nxd7 Rxd7 22.Rxd7+ Nxd7 23.Bb5 Ne5 24.h3 h5 25.g3 Rc8 26.c3 h4 27.g4 g5 28.a4 a5 29.Ke3 Rc7 30.Rd4 Ng6 31.Rc4 Rc5 32.Rxc5 bxc5 33.b4 cxb4 34.cxb4 axb4 35.a5 Kd6 36.a6 Kc7 37.Kd2 Ne5 38.Kc2 Nf3 39.Kb3 Nd2+ 40.Kxb4 Kb6 41.Bd3 Nf3 42.Kc3 Ne5 43.Be2 Nc6 44.Bf1 1/2-1/2
2024.08.04 26th HZ Open 2024
419679 Verweij, David (2001) FM Duijker, R (2186) 1-0
1.Nf3 Nf6 2.g3 c5 3.Bg2 Nc6 4.O-O d6 5.d3 g6 6.e4 Bg7 7.Nbd2 O-O 8.c3 Rb8 9.a4 a6 10.Re1 Nd7 11.Nf1 b5 12.axb5 axb5 13.d4 b4 14.Bf4 e5 15.Bg5 Qc7 16.d5 Nd8 17.Bd2 f5 18.Ne3 f4 19.Nc4 Nb6 20.Na5 bxc3 21.Bxc3 Bd7 22.Ra3 Nb7 23.Nd2 Ra8 24.Qb3 Bh6 25.Rea1 fxg3 26.hxg3 Nxa5 27.Rxa5 Rxa5 28.Rxa5 Rb8 29.Qa2 Bg4 30.Nf1 Qf7 31.Nh2 Bd7 32.Ra7 Rf8 33.f3 Be3+ 34.Kh1 Bf2 35.Ng4 Nc8 1-0
2024.08.04 26th HZ Open 2024
432316 FM Duijker, R (2186) Den Heijer, Rolinde (1981) 1/2-1/2
1.c4 e6 2.Nf3 d5 3.g3 Nf6 4.Bg2 d4 5.d3 h6 6.O-O c5 7.e3 Nc6 8.exd4 cxd4 9.Re1 Bd6 10.Na3 O-O 11.Nc2 Re8 12.a3 a5 13.Ncxd4 Nxd4 14.Nxd4 Bxg3 15.hxg3 Qxd4 16.Qe2 e5 17.Be3 Qd8 18.b4 Ra6 19.Bc5 Bg4 20.Qe3 Qc8 21.Bb6 axb4 22.axb4 e4 23.b5 Rxa1 24.Rxa1 exd3 25.Qxd3 Be2 26.Qd4 Qxc4 27.Qxc4 Bxc4 28.Bd4 Bxb5 29.Bxf6 gxf6 30.Bxb7 Kg7 31.Rd1 Bc4 32.Bf3 Rb8 33.Kg2 Be6 34.Rd4 f5 35.Rh4 Rb6 1/2-1/2
2024.08.03 26th HZ Open 2024
432267 Nellen, Marcel (1864) FM Duijker, R (2186) 0-1
1.d4 Nf6 2.c4 c5 3.d5 b5 4.cxb5 a6 5.bxa6 g6 6.g3 d6 7.Nc3 Bg7 8.a7 Rxa7 9.e4 O-O 10.Nf3 Nbd7 11.Be2 Ba6 12.O-O Qb6 13.Qc2 Rb8 14.Rb1 Bxe2 15.Qxe2 Qa6 16.Qc2 Ng4 17.a3 Nge5 18.Ne1 Rab7 19.b3 Rb6 20.h3 Nf6 21.f4 Ned7 22.Rf3 Qb7 23.Ne2 e6 24.dxe6 fxe6 25.Re3 d5 26.e5 Ne4 27.Nf3 Bf8 28.Kg2 Be7 29.g4 Rf8 30.g5 Qa8 31.a4 Nb8 32.Ba3 Nc6 33.Rd3 Rfb8 34.Rdd1 Qb7 35.Nd2 Nxd2 36.Rxd2 c4 37.Bxe7 Nxe7 38.Nd4 Nf5 39.Nxf5 gxf5 40.a5 Rxb3 41.Rxb3 cxb3 42.Qb2 Qb4 43.a6 Kf7 44.a7 Qe4+ 45.Kh2 Qxf4+ 46.Kh1 Ra8 47.Qxb3 Rxa7 0-1
2024.07.21 Science Park Open A 2024
452929 Khatniuk, Anastasiia (2000) FM Duijker, R (2198) 0-1
1.e4 e6 2.d4 d5 3.Nd2 Nf6 4.e5 Nfd7 5.Nb3 b6 6.Nf3 c5 7.c3 Ba6 8.Bxa6 Nxa6 9.Qe2 Nc7 10.a4 Be7 11.Be3 O-O 12.h4 f6 13.exf6 gxf6 14.Bf4 e5 15.dxe5 fxe5 16.Bxe5 Nxe5 17.Qxe5 Qd7 18.Kf1 Bd6 19.Qg5+ Kh8 20.h5 Rf5 21.Qh4 Ne6 22.Re1 Nf4 23.g4 Qxa4 24.gxf5 Qc4+ 25.Kg1 Rg8+ 26.Ng5 h6 27.Nd2 Qd3 28.Re8 Rxe8 29.Nf7+ Kh7 30.Nf1 Re1 0-1
2024.07.20 Science Park Open A 2024
452912 FM Duijker, R (2198) Kanis, Sierk (2105) 0-1
1.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 d6 6.O-O e5 7.d3 Nge7 8.Ne1 Be6 9.Nc2 d5 10.cxd5 Nxd5 11.Ne3 Nde7 12.Rb1 Qd7 13.a3 O-O 14.Ne4 b6 15.Ng5 Rad8 16.b4 cxb4 17.Nxe6 Qxe6 18.axb4 Nd4 19.Bb2 f5 20.Nc4 e4 21.Bxd4 Rxd4 22.Qa4 f4 23.Qxa7 Nd5 24.Bxe4 Rxe4 25.dxe4 Nc3 26.Nd2 Nxe2+ 27.Kh1 fxg3 28.fxg3 Nxg3+ 29.Kg2 Nxf1 30.Rxf1 Qg4+ 31.Kh1 Rxf1+ 32.Nxf1 Qf3+ 0-1
2024.07.19 Science Park Open A 2024
452900 FM Wunnink, M (2154) FM Duijker, R (2198) 1/2-1/2
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 c5 5.Bd3 Nc6 6.Ne2 d5 7.cxd5 exd5 8.O-O cxd4 9.exd4 O-O 10.Bg5 Be7 11.h3 h6 12.Be3 Bd6 13.Ng3 Re8 14.Qf3 Be6 15.Rae1 Qb6 16.Nf5 Bxf5 17.Bxf5 Qxb2 18.Nxd5 1/2-1/2
2024.07.18 Science Park Open A 2024
452890 FM Duijker, R (2198) Groenewoud, Joel (2095) 1-0
1.b3 Nf6 2.Bb2 g6 3.Bxf6 exf6 4.c4 Bg7 5.Nc3 O-O 6.g3 f5 7.Bg2 d6 8.Rc1 Nd7 9.e3 Nf6 10.Nge2 c6 11.O-O Be6 12.d4 d5 13.cxd5 cxd5 14.Nf4 Qd7 15.Qe2 Rfd8 16.Qb5 Qd6 17.Na4 b6 18.Rc6 Bd7 19.Rxd6 Bxb5 20.Rxd8+ Rxd8 21.Rc1 g5 22.Nh3 h6 23.Rc7 Bf8 24.Nc3 Bd3 25.Bf1 Bxf1 26.Kxf1 Bb4 27.Nb1 Rd7 28.Rxd7 Nxd7 29.f4 f6 30.Nf2 Kf7 31.Nd3 Be7 32.Nc3 Ke6 33.Nb5 a5 34.Nc7+ Kd6 35.Ne8+ Kc6 36.Ng7 b5 37.Nxf5 Bf8 38.h4 a4 39.Ke2 b4 40.bxa4 Kb6 41.fxg5 fxg5 42.Ne5 Nf6 43.Ng6 Nh7 44.Kd3 Ka5 45.Kc2 Kxa4 46.Kb2 gxh4 47.gxh4 h5 48.Nf4 Nf6 49.Ne6 Nd7 50.Nf4 Nf6 51.Ng6 Nh7 52.Ne5 Nf6 53.Nd3 Ne4 54.Ne1 Nf6 55.Nc2 Ne4 56.Na1 Nd2 57.Nb3 Ne4 58.Nc1 Nd2 59.Ne2 Ne4 60.Kc1 Ka3 61.Kb1 b3 62.axb3 Kxb3 63.Kc1 Bb4 64.Nf4 Nf6 65.Kd1 Ba5 66.Ke2 Kc3 67.Ne7 Kc4 68.Nc6 Bb6 69.Ne5+ Kc3 70.Neg6 Bc7 71.Kf3 Bd6 72.Ne5 Kd2 73.Nc6 Kc3 74.Nd8 Kd2 75.Nde6 Kc3 76.Ng7 Be7 77.Nf5 Bb4 78.Ne6 Kc4 79.Kf4 Ne4 80.Neg7 Ba5 81.Nxh5 Bc7+ 82.Kf3 Kb5 83.Nf4 Nf6 84.h5 Kc6 85.h6 Ba5 86.Ne6 Nh7 87.Kf4 1-0
2024.07.17 Science Park Open A 2024
452881 In 't Veld, D (2106) FM Duijker, R (2198) 1/2-1/2
1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.d3 Bc5 5.O-O Nd4 6.Nxd4 Bxd4 7.c3 Bb6 8.d4 O-O 9.Bd3 d5 10.Bg5 dxe4 11.dxe5 exd3 12.exf6 Re8 13.Qf3 h6 14.Bxh6 Qxf6 15.Qxf6 gxf6 16.Nd2 Bf5 17.Be3 Rxe3 18.fxe3 Bxe3+ 19.Kh1 Bg6 20.Rad1 Kg7 21.g4 Re8 22.Kg2 Re6 23.Kg3 Bc5 24.Rde1 Ra6 25.a3 Rb6 26.Rb1 Re6 1/2-1/2
2024.07.16 Science Park Open A 2024
452868 FM Duijker, R (2198) Goudriaan, Rafael (2028) 1/2-1/2
1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 Qb6 5.Nb3 g6 6.c4 Bg7 7.Be3 Qd8 8.Qd2 Nf6 9.f3 d6 10.Nc3 O-O 11.Be2 a5 12.O-O a4 13.Nd4 Bd7 14.Ndb5 Qa5 15.Rab1 Ne5 16.Rfd1 Rfc8 17.b4 axb3 18.axb3 Bxb5 19.Nxb5 Qxd2 20.Rxd2 Ne8 21.f4 Nc6 22.Bg4 Rcb8 23.Bf3 Rc8 24.Bg4 Rcb8 25.Bf3 Rc8 1/2-1/2
2024.07.15 Science Park Open A 2024
464580 Emans, Job (2090) FM Duijker, R (2198) 1/2-1/2
1.d4 Nf6 2.c4 c5 3.d5 b5 4.cxb5 a6 5.bxa6 g6 6.Nc3 Bg7 7.e4 O-O 8.a7 Rxa7 9.Be2 d6 10.Nf3 Ba6 11.O-O Bxe2 12.Qxe2 Nbd7 13.a4 Qa8 14.Ra3 Ne8 15.Bg5 f6 16.Be3 Nc7 17.Rfa1 Qb7 18.R1a2 f5 19.Bg5 fxe4 20.Qxe4 Ne5 21.Nd2 Na6 22.Nb5 Raa8 23.Ra1 Nb4 24.Rd1 Rf5 25.Be3 Qxd5 26.Nc7 Qxe4 27.Nxe4 Rc8 28.Ne6 Nc4 29.Nxg7 Kxg7 30.Rb3 Re5 31.Rxb4 Nxe3 32.Rc1 Ra8 33.f4 Rf5 34.Rb7 Kf8 35.Ng5 h6 36.Nh7+ Kf7 37.Re1 Nd5 38.Rd1 Nxf4 39.g4 Rd5 40.Rf1 Rxa4 41.b4 g5 42.bxc5 Rxc5 43.h4 gxh4 44.Rb8 Kg6 45.Nf8+ Kg5 46.Ne6+ Kxg4 47.Nxc5 dxc5 48.Rg8+ Kf5 49.Rc8 Rc4 50.Re1 e6 51.Rf8+ Kg5 52.Rg8+ Kf6 53.Rh8 h5 54.Rf8+ Ke7 55.Rh8 Rd4 56.Rc8 c4 57.Kh1 Nd5 58.Rc6 c3 59.Rexe6+ Kf7 60.Red6 Ke7 61.Re6+ Kf7 62.Red6 Ke7 63.Re6+ 1/2-1/2
2024.07.13 Science Park Open A 2024
464558 Titus, Branco (2014) FM Duijker, R (2198) 1/2-1/2
1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 e5 5.Nb5 a6 6.Nd6+ Bxd6 7.Qxd6 Qf6 8.Qd2 Qg6 9.Nc3 Nge7 10.b3 d6 11.Bb2 Be6 12.O-O-O O-O 13.Qxd6 Rfd8 14.Qc5 Rxd1+ 15.Kxd1 Qg5 16.Qe3 Rd8+ 17.Kc1 Qxe3+ 18.fxe3 f6 19.Be2 Nc8 20.Rd1 Rxd1+ 21.Kxd1 Nd6 22.Ba3 Nf7 23.Na4 Ng5 24.Nc5 Bc8 25.Bc4+ Nf7 26.Bd5 Nd8 27.Bb4 h5 28.Ba5 Kf8 29.Bxd8 Nxd8 30.h4 Ke7 31.b4 Kd6 32.c4 a5 33.a3 axb4 34.axb4 Nc6 35.Bxc6 Kxc6 36.Kd2 b6 37.Na4 b5 38.Nb2 Bg4 39.c5 Kc7 40.Nd3 Be6 41.Nf2 Kc6 42.Ke2 Kd7 43.Kf3 Ke7 44.g4 g6 45.Kg3 Bd7 46.gxh5 gxh5 47.Nd1 Bc6 48.Nc3 Ke6 49.Kf2 Ke7 50.Ke2 Ke6 51.Kd3 f5 52.Ke2 1/2-1/2
2023.08.11 25th HZ Open 2023
854166 IM Zwirs, Nico (2442) FM Duijker, R (2198) 1-0
1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 e5 5.Nb5 a6 6.Nd6+ Bxd6 7.Qxd6 Qf6 8.Qd2 Nge7 9.Nc3 d6 10.b3 O-O 11.Bb2 Be6 12.O-O-O Nd4 13.Bd3 b5 14.Rhf1 Ng6 15.Nd5 Bxd5 16.exd5 Nf4 17.Be4 Qh6 18.Bxd4 exd4 19.Kb1 Rae8 20.Rfe1 f5 21.Bf3 d3 22.cxd3 Rxe1 23.Rxe1 Qxh2 24.Qe3 Ng6 25.g3 f4 26.Qe6+ Kh8 27.Rh1 fxg3 28.Rxh2 gxh2 29.Qh3 Ne5 30.Be4 1-0
2023.08.10 25th HZ Open 2023
854148 FM Duijker, R (2198) GM Vrolijk, Liam (2558) 1/2-1/2
1.c4 e5 2.Nc3 Bb4 3.Na4 a5 4.a3 Be7 5.e3 f5 6.d4 d6 7.dxe5 dxe5 8.Qxd8+ Bxd8 9.b3 Bf6 10.Bb2 Na6 11.O-O-O e4 12.Nh3 Bxb2+ 13.Kxb2 Nf6 14.Nf4 Bd7 15.Nc3 c6 16.Be2 Ke7 17.Na4 Rad8 18.c5 Nc7 19.Nb6 Be6 20.h4 Bf7 21.Rxd8 Rxd8 22.Rd1 Rxd1 23.Bxd1 Na6 24.Nc8+ Kf8 25.b4 axb4 26.axb4 Nxb4 27.Nd6 Nfd5 28.Be2 Nxf4 29.exf4 Nd5 30.g3 Be6 31.Nxb7 Ke7 1/2-1/2
2023.08.09 25th HZ Open 2023
854139 FM Rodriguez Fontecha, M (2309) FM Duijker, R (2198) 0-1
1.d4 Nf6 2.Nf3 c5 3.d5 b5 4.a4 b4 5.Bg5 Qb6 6.a5 Qd6 7.c4 Ne4 8.Bh4 Qh6 9.Nbd2 f5 10.Qc1 Nxd2 11.Qxd2 Qxd2+ 12.Nxd2 e5 13.dxe6 dxe6 14.g4 Bb7 15.Rg1 Nd7 16.gxf5 exf5 17.Bh3 g6 18.e4 Bh6 19.Bg5 Bxg5 20.Rxg5 Ne5 21.exf5 Nd3+ 22.Kf1 O-O 23.Rg3 Rad8 24.Nb3 Ba6 25.Kg1 Bxc4 26.Nd2 Bb5 27.Ne4 Nf4 28.Bg4 h5 29.Bxh5 Nxh5 30.Rxg6+ Kf7 31.Re1 Rfe8 32.Ng5+ Kf8 33.Nh7+ Kf7 34.Ng5+ Kf8 35.Ne6+ Kf7 36.Rg5 Nf4 37.Nxd8+ Rxd8 38.Rg4 Ne2+ 39.Kg2 Rd2 40.h4 Bc6+ 41.Kf1 Nd4 42.h5 Nf3 43.Rc1 Rxb2 44.Rg6 Bb5+ 45.Kg2 Nh4+ 46.Kg3 Nxg6 47.fxg6+ Kf6 48.Rxc5 a6 49.Rc7 Rb1 50.Rf7+ Ke6 51.Rf3 Bc6 52.Re3+ Kf6 53.Rd3 Rc1 54.Rd4 b3 55.Rb4 Bd5 56.Rb6+ Kg7 57.Kf4 Rc5 58.Ke3 Rxa5 59.Kd4 Rb5 0-1
2023.08.06 25th HZ Open 2023
854093 FM Duijker, R (2198) GM Ikonnikov, Vy (2447) 0-1
1.c4 e5 2.Nc3 d6 3.g3 Nc6 4.Bg2 g6 5.e3 Bg7 6.Nge2 h5 7.h3 Bd7 8.d4 Qc8 9.Nd5 Nf6 10.Nxf6+ Bxf6 11.d5 Ne7 12.Nc3 Bg7 13.e4 O-O 14.Be3 f5 15.Qd2 Rf7 16.c5 Qf8 17.cxd6 cxd6 18.h4 b5 19.Bh3 b4 20.Ne2 a5 21.Rc1 Bb5 22.Bg5 Kh7 23.Rc7 fxe4 24.O-O Nf5 25.Rfc1 Bd3 26.g4 hxg4 27.Bxg4 Rxc7 28.Rxc7 Rc8 29.Rc6 Rxc6 30.dxc6 Qc8 31.Ng3 Qxc6 32.Nxf5 gxf5 33.Bxf5+ Kg8 34.h5 Qe8 35.h6 Qf7 36.Bg4 Bf8 37.Qe3 Qg6 38.Kh2 Bxh6 39.Bxh6 Qxg4 40.Qg5+ Qxg5 41.Bxg5 Kf7 42.Bd2 Ke6 43.a3 bxa3 44.bxa3 a4 45.Kg3 Be2 46.Kh4 Kf5 47.Kg3 d5 48.Ba5 d4 49.Bb4 Bf3 50.Kh4 d3 51.Ba5 Bh1 52.Bd2 Ke6 53.Kg5 Kd5 54.Kf6 Kc4 55.Kxe5 Kb3 56.Kd4 Kxa3 57.Kc3 Ka2 58.Bc1 a3 59.Kb4 Kb1 60.Bxa3 d2 0-1
2023.08.03 Dutch Open 2023
863088 IM Maatman, Nick (2362) FM Duijker, R (2198) 1/2-1/2
1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 e5 5.Nb5 a6 6.Nd6+ Bxd6 7.Qxd6 Qf6 8.Qd1 Qg6 9.Nc3 d5 10.Nxd5 Qxe4+ 11.Be3 Nd4 12.Nc7+ Ke7 13.Be2 Qxg2 14.Rf1 Qc6 15.c3 Nxe2 16.Nxa8 Nf4 17.Bxf4 exf4 18.Qb3 Qe4+ 19.Kd2 Be6 20.Qa3+ Kf6 21.Nc7 Bf5 22.Qd6+ Kg5 23.Rg1+ Kh5 24.Rxg7 f3 25.Re1 Qc2+ 26.Ke3 Qe4+ 27.Kd2 Qc2+ 28.Ke3 1/2-1/2
2023.08.02 Dutch Open 2023
863070 FM Duijker, R (2198) Bus, T (2100) 1-0
1.d4 Nf6 2.Bg5 d5 3.e3 c5 4.dxc5 Qa5+ 5.Nd2 Nc6 6.Nf3 e6 7.a3 Qxc5 8.Bd3 Be7 9.O-O O-O 10.c4 dxc4 11.Nxc4 b5 12.Ncd2 Bb7 13.Rc1 Qb6 14.Qc2 g6 15.Bxf6 Bxf6 16.Ne4 Bg7 17.Nc5 Rfd8 18.Nxb7 Qxb7 19.Be4 Rac8 20.Bxc6 Qb6 21.Qe4 Rd6 22.Ba8 Rxc1 23.Rxc1 Bxb2 24.Rc8+ Rd8 25.Rxd8+ Qxd8 26.Nd4 Bxa3 27.g3 b4 28.Bc6 Bb2 29.Ba4 Qb6 30.Bb3 Bc3 31.h4 h5 32.Kg2 Kg7 33.Qe5+ Kh7 34.Qf4 Kg8 35.Qf6 Qb7+ 36.Kh2 Qd7 37.Qe5 Kh7 38.Qc5 Kg7 39.Qe5+ Kh7 40.Bc2 Kg8 41.Kg2 b3 42.Qb8+ Kh7 43.Nxb3 Qc6+ 44.Kh2 Be1 45.Nd4 Qc5 46.Qb7 Kg8 47.Kg2 a5 48.Be4 Bc3 49.Nf3 Bf6 50.Qc6 Qb4 51.Bc2 Kg7 52.Qe4 Qc5 53.Bb3 Qb5 54.Qc4 Qb7 55.Ba4 Qb2 56.Qc5 Qb4 57.Qxb4 axb4 58.Nd2 Be7 59.Kf3 f5 60.Ke2 g5 61.Nf3 gxh4 62.gxh4 Bf6 63.Ng5 e5 64.Bd7 Kg6 65.Be8+ Kh6 66.Nf7+ Kg7 67.Nd6 b3 68.Nxf5+ Kf8 69.Ba4 b2 70.Bc2 Bd8 71.Kd1 Kf7 72.Be4 Ba5 73.Kc2 Be1 74.f3 1-0
2023.08.01 Dutch Open 2023
863045 Labruyere, Roger (2191) FM Duijker, R (2198) 1-0
1.e4 c5 2.Nf3 Nc6 3.c3 e6 4.d4 d5 5.exd5 exd5 6.Bb5 Nf6 7.O-O Be7 8.Ne5 Bd7 9.Nxd7 Qxd7 10.dxc5 Bxc5 11.Re1+ Ne4 12.Be3 O-O 13.Nd2 Bxe3 14.Rxe3 Nd6 15.Ba4 Rfd8 16.Rh3 b5 17.Bc2 g6 18.Nf3 Ne4 19.Qc1 h5 20.Qh6 Ne7 21.Ng5 Qf5 22.Qh7+ Kf8 23.Rf3 Nxg5 24.Qh8+ Ng8 25.Bxf5 Nxf3+ 26.gxf3 gxf5 27.Qxh5 f4 28.Rd1 Ne7 29.Qh8+ Ng8 30.Qe5 Ne7 31.Qxf4 Ng6 32.Qh6+ Kg8 33.h4 Rd6 34.h5 Rad8 35.Kh1 d4 36.hxg6 Rxg6 37.Rg1 d3 38.Rxg6+ fxg6 39.Qxg6+ Kf8 40.Qh6+ Kf7 41.Qd2 a5 42.Kg1 b4 43.cxb4 axb4 44.Qf4+ Ke6 45.Qe4+ Kf7 46.Qf5+ Ke7 47.Qg5+ Ke8 48.Qxd8+ Kxd8 49.Kf1 d2 50.Ke2 d1=N 51.Kxd1 1-0
2023.07.31 Dutch Open 2023
869676 FM Duijker, R (2198) Koster, Chiel (2052) 1-0
1.g3 c5 2.Nf3 Nc6 3.Bg2 e5 4.d3 d6 5.O-O Nge7 6.c4 g6 7.Nc3 Bg7 8.Ne1 O-O 9.Nc2 Be6 10.Ne3 Qd7 11.Ned5 f5 12.Bg5 Nc8 13.Bd2 h6 14.e3 Rb8 15.a3 a6 16.b4 b5 17.cxb5 axb5 18.Rb1 c4 19.dxc4 bxc4 20.Qe2 e4 21.Qxc4 Ne5 22.Qc7 Qxc7 23.Nxc7 Bc4 24.Rfc1 Nb6 25.b5 Rbc8 26.Na6 Bd3 27.Ra1 d5 28.Nb4 Nec4 29.Be1 d4 30.exd4 Bxd4 31.Nc6 Bf6 32.a4 Nd6 33.Bf1 Nbc4 34.Ra2 Rfe8 35.Nd5 Kf7 36.Nxf6 Kxf6 37.Bc3+ Kf7 38.Bd4 Bxf1 39.Kxf1 g5 40.Rac2 Ke6 41.Rxc4 Nxc4 42.Rxc4 Kd5 43.Rc5+ 1-0
2023.07.29 Dutch Open 2023
869648 IM Zwirs, Nico (2443) FM Duijker, R (2198) 1-0
1.e4 e6 2.d4 d5 3.Nd2 Nf6 4.e5 Nfd7 5.f4 c5 6.c3 Nc6 7.Ndf3 Qb6 8.a3 a5 9.b3 cxd4 10.cxd4 f6 11.Bd3 Be7 12.Ne2 O-O 13.Bc2 fxe5 14.fxe5 Rxf3 15.gxf3 Bh4+ 16.Kf1 Ndxe5 17.Kg2 Ng6 18.Be3 Bf6 19.Bxg6 hxg6 20.Qd3 Bd7 21.Rhc1 Ne7 22.Ng3 Kf7 23.Rab1 Bb5 24.Qd2 Rh8 25.a4 Ba6 26.b4 axb4 27.Rxb4 Qa5 28.Bf4 Bc4 29.Rxb7 Qxa4 30.Be5 g5 31.Re1 Qa3 32.Re3 Qa1 33.Re1 Qa3 34.Re3 Qa1 35.Bxf6 Kxf6 36.Rxe6+ Kxe6 37.Qe3+ Kf6 38.Qxe7+ Kg6 39.Qxg7# 1-0
2023.07.28 Dutch Open 2023
869630 FM Duijker, R (2198) Op den Dries, J (2093) 1-0
1.c4 Nc6 2.Nc3 e5 3.g3 f5 4.Bg2 Nf6 5.e3 Bb4 6.Nge2 O-O 7.O-O d6 8.a3 Bxc3 9.Nxc3 f4 10.d4 fxg3 11.hxg3 Qe8 12.Nd5 Nxd5 13.cxd5 Nd8 14.dxe5 Qxe5 15.Bd2 Nf7 16.Bc3 Qg5 17.Qd4 Nh6 18.e4 Rf7 19.Rae1 Qh5 20.f3 Bh3 21.g4 Qh4 22.Re2 Bxg2 23.Rxg2 Kh8 24.Rff2 Ng8 25.g5 Ne7 26.g6 Rf6 27.Rg4 Qh3 28.gxh7 Raf8 29.Qd2 Qxg4+ 30.fxg4 Rxf2 31.Bxg7+ Kxg7 32.Qg5+ Kxh7 33.Qxe7+ R2f7 34.Qh4+ Kg8 35.Kg2 Re8 36.g5 Rg7 37.Kf3 Re5 38.Kf4 Rexg5 39.Qxg5 Rxg5 40.Kxg5 Kf7 41.b4 c6 42.a4 Ke7 43.Kf5 Kd7 44.Kf6 Kc7 45.Ke7 cxd5 46.exd5 a6 47.Ke6 1-0
2023.07.27 Dutch Open 2023
869611 Schuricht, Emil Frederick (2018) FM Duijker, R (2198) 1/2-1/2
1.d4 Nf6 2.c4 c5 3.d5 b5 4.cxb5 a6 5.bxa6 g6 6.Nc3 Bg7 7.e4 O-O 8.Nf3 Qa5 9.Bd2 Bxa6 10.Be2 Bxe2 11.Qxe2 Qa6 12.e5 Ng4 13.Bf4 d6 14.Qxa6 Rxa6 15.exd6 exd6 16.O-O Nd7 17.a4 Rb8 18.Ra2 Nge5 19.Nxe5 Nxe5 20.Bxe5 Bxe5 21.Rfa1 Rb3 22.Kf1 Bxc3 23.bxc3 Rxc3 24.Rb2 Rc4 25.Rb8+ Kg7 26.Rc8 Rcxa4 27.Rxa4 Rxa4 28.Rc6 Kf6 29.Rxd6+ Ke5 30.Rd7 f5 31.Rxh7 Kxd5 32.Rh6 Ra6 33.h4 Re6 34.h5 gxh5 35.Rxh5 Ke4 36.Ke2 c4 37.Rh4+ Kd5+ 38.Kd2 Rg6 39.Rh5 Ke4 40.Rh4+ Kd5 41.Rh5 Rxg2 42.Rxf5+ Ke4 43.Rf8 Kd4 1/2-1/2
2023.07.26 Dutch Open 2023
869589 FM Duijker, R (2198) Brouwer, Tim (2107) 1-0
1.Nf3 d5 2.g3 Nf6 3.Bg2 Bf5 4.c4 c6 5.b3 Qc8 6.O-O Bh3 7.d3 Bxg2 8.Kxg2 e6 9.Nbd2 Nbd7 10.e4 dxe4 11.dxe4 e5 12.Bb2 Qc7 13.Qc2 Bd6 14.Nh4 O-O 15.Nf5 Bc5 16.h3 g6 17.Nh6+ Kg7 18.Ng4 Nxg4 19.hxg4 Rad8 20.Nf3 f6 21.g5 Be7 22.Rad1 Kg8 23.gxf6 Bxf6 24.c5 Rf7 25.b4 Rdf8 26.Qc4 Kh8 27.Rd6 Bg7 28.Ng5 Rf6 29.Ne6 1-0
2023.07.25 Dutch Open 2023
869571 Van Kuijk, Vadim (1997) FM Duijker, R (2198) 1-0
1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 e5 5.Nb5 a6 6.Nd6+ Bxd6 7.Qxd6 Qf6 8.Qd1 Qg6 9.Nc3 d5 10.Nxd5 Qxe4+ 11.Be3 Nd4 12.Nc7+ Ke7 13.Be2 Nxc2+ 14.Kf1 Nxe3+ 15.fxe3 Nf6 16.Nxa8 Rd8 17.Qb3 Nd5 18.Bf3 Nxe3+ 19.Ke2 Rd2+ 20.Kxd2 Nc4+ 21.Kd1 Qd4+ 22.Ke2 Qd2+ 23.Kf1 Bf5 24.Rd1 Ne3+ 25.Kg1 Nxd1 26.Qxd1 Qe3+ 27.Kf1 Bd3+ 28.Be2 Bxe2+ 29.Qxe2 Qc1+ 30.Qe1 Qc4+ 31.Kf2 Qc2+ 32.Ke3 f5 33.Qb4+ Kf6 34.Qd6+ Kg5 35.h4+ Kg4 36.Qxe5 Qxg2 37.Qxg7+ 1-0
2022.07.24 43rd ATS Ghent Open 2022
1263832 FM Froeyman, H (2289) FM Duijker, R (2194) 0-1
1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 e5 5.Nb5 a6 6.Nd6+ Bxd6 7.Qxd6 Qf6 8.Qd1 Qg6 9.Nc3 d5 10.Nxd5 Qxe4+ 11.Be3 Nd4 12.Nc7+ Ke7 13.Be2 Nxc2+ 14.Kf1 Nxe3+ 15.fxe3 Nf6 16.Qb3 Bg4 17.Qa3+ Kd7 18.Rd1+ Kc8 19.Nxa8 Bxe2+ 20.Kxe2 Qxg2+ 21.Kd3 Rd8+ 22.Kc3 Ne4+ 23.Kb3 Nd2+ 24.Rxd2 Qxd2 25.Nb6+ Kb8 26.Ka4 Qc2+ 27.Ka5 Qc6 0-1
2022.07.23 43rd ATS Ghent Open 2022
1263812 Wubben, M (2012) FM Duijker, R (2194) 0-1
1.d4 Nf6 2.c4 c5 3.d5 b5 4.cxb5 a6 5.b6 d6 6.Nc3 Nbd7 7.e4 g6 8.Nf3 Bg7 9.Be2 Rb8 10.O-O O-O 11.a4 Nxb6 12.a5 Na8 13.e5 Ng4 14.exd6 exd6 15.Nd2 f5 16.Nc4 Ne5 17.Re1 Rb4 18.Ra4 Rxa4 19.Nxa4 Nxc4 20.Bxc4 Qxa5 21.Re7 Nb6 22.Nxb6 Qxb6 23.Qe2 f4 24.b3 Qd8 25.Ra7 Re8 26.Qd2 f3 27.Rxg7+ Kxg7 28.Bb2+ Kg8 29.Qc3 Re5 30.Qxf3 Re1+ 31.Bf1 Qe7 32.Qc3 Bf5 33.Qh8+ Kf7 34.Qxh7+ Ke8 35.Qh8+ Kd7 36.Qc3 Qe2 0-1
2022.07.23 43rd ATS Ghent Open 2022
1263823 FM Duijker, R (2194) Stuer, M (2045) 1-0
1.d4 f5 2.Bg5 h6 3.Bh4 g5 4.Bg3 Nf6 5.e3 Bg7 6.c4 d6 7.Nc3 O-O 8.h4 g4 9.Bd3 Nc6 10.Qb1 Nh5 11.Nge2 e5 12.d5 Nb4 13.f4 Qe7 14.Kd2 Bd7 15.a3 Na6 16.Bf2 Rae8 17.g3 Nc5 18.b4 exf4 19.exf4 Nxd3 20.Qxd3 Nf6 21.Bd4 c6 22.Rhe1 a6 23.Rad1 cxd5 24.Nxd5 Nxd5 25.Bxg7 Qxg7 26.Qxd5+ Be6 27.Qd4 Qc7 28.Rc1 Qc6 29.Qd3 Qg2 30.Kc3 Rc8 31.Kb2 Rfd8 32.Ka1 Qf3 33.Qxf3 gxf3 34.Nd4 Bxc4 35.Nxf3 Bd5 36.Nd4 Be4 37.Kb2 Kf7 38.g4 Rxc1 39.Kxc1 Rc8+ 40.Kd2 Rc4 41.Nxf5 Bxf5 42.gxf5 Rxf4 43.Re6 Rxh4 44.Rxd6 Rh3 45.a4 b5 46.a5 Rb3 47.Rxh6 Rxb4 48.Rxa6 Ra4 49.Ra8 Ke7 50.a6 Kd7 51.a7 Kc6 52.Rc8+ 1-0
2022.07.22 43rd ATS Ghent Open 2022
1263794 FM Duijker, R (2194) Stone, A ENG (2096) 0-1
1.d4 d5 2.Bg5 h6 3.Bh4 c5 4.e4 dxe4 5.d5 g5 6.Bg3 Bg7 7.Nc3 f5 8.f4 g4 9.Qd2 a6 10.Bf2 Qd6 11.a4 b6 12.Bc4 h5 13.Nge2 Nf6 14.Ng3 Bh6 15.Be3 h4 16.Nf1 Kf8 17.g3 h3 18.Qf2 Nbd7 19.Rd1 Ne8 20.Bc1 Bg7 21.Ne3 Qg6 22.d6 Bxc3+ 23.bxc3 Nxd6 24.Bd5 Ra7 25.a5 bxa5 26.Ba3 Rc7 27.Bb3 Nb6 28.Nd5 Nxd5 29.Rxd5 Bb7 30.O-O Bxd5 31.Bxd5 e6 32.Ba2 Nb7 33.Rb1 Qe8 34.Qd4 Rh6 35.Qe5 Qc6 36.Bc4 Qd6 37.Rxb7 Qxe5 38.Rb8+ Kg7 39.fxe5 Rh8 40.Rxh8 Kxh8 41.Bxe6 Rb7 42.Bb3 a4 43.Bxa4 Rb1+ 44.Kf2 Rh1 45.e6 e3+ 46.Ke2 Rxh2+ 47.Kxe3 Rh1 48.Kf4 Rf1+ 49.Kg5 h2 50.Bc6 f4 51.e7 Re1 52.gxf4 Rxe7 53.Bxc5 Re1 54.Kxg4 h1=Q 55.Bxh1 Rxh1 56.Kf5 Rh5+ 0-1
2022.07.20 43rd ATS Ghent Open 2022
1263737 FM Duijker, R (2194) Steegmans, Pieter (1763) 1/2-1/2
1.d4 d5 2.Bg5 Bf5 3.c4 c6 4.Nc3 h6 5.Bh4 g5 6.Bg3 Nf6 7.Qb3 Qb6 8.c5 Qxb3 9.axb3 Nbd7 10.b4 Ne4 11.Nxe4 Bxe4 12.f3 Bg6 13.e3 e5 14.b5 cxb5 15.Bxb5 exd4 16.exd4 f5 17.Ne2 f4 18.Bf2 a6 19.h4 Rh7 20.hxg5 hxg5 21.Rxh7 Bxh7 22.c6 bxc6 23.Bxc6 Rb8 24.Rxa6 Rxb2 25.Ra8+ Kf7 1/2-1/2
2019.06.02 Groninger Combinatie Open
2385132 FM Duijker, R (2164) Seijen, Henk (1750) 1/2-1/2
1.d4 g6 2.e4 Bg7 3.Nc3 d6 4.Be3 a6 5.Qd2 Nd7 6.O-O-O b5 7.f3 Nb6 8.Bd3 Nf6 9.g4 h5 10.g5 Nfd7 11.Nge2 c5 12.dxc5 dxc5 13.Nd5 O-O 14.Nxb6 Qxb6 15.f4 Bb7 16.Rhe1 Rfd8 17.e5 Qe6 18.Qa5 c4 19.Nd4 Qb6 20.Qxb6 Nxb6 21.Bf1 Nd5 22.Bd2 e6 23.c3 Bf8 24.Bg2 Rab8 25.Bxd5 Bxd5 26.Be3 b4 27.Ne2 Be4 28.Ba7 Rbc8 29.Bb6 Rxd1+ 30.Kxd1 Bd3 31.Ba5 Bxe2+ 32.Kxe2 bxc3 33.Bxc3 Rd8 34.Rd1 Rxd1 35.Kxd1 Bc5 36.Ke2 Kf8 37.a3 Ke8 38.Kf3 Kd7 39.Ke4 Bg1 40.h3 Kc6 41.Bd4 Bh2 42.Be3 Bg3 43.a4 Be1 44.Kd4 c3 45.bxc3 Bg3 46.Kd3 Be1 47.c4 Bb4 48.Bd2 Bc5 49.Kc3 Kb6 50.Kc2 Kc6 51.Kd3 Ba3 52.Be3 Bb4 53.Bf2 Ba3 54.Kc2 Bb4 55.Be3 Ba5 56.Kb2 Be1 57.Kb3 Ba5 58.Bc1 Be1 59.Be3 Ba5 60.Kc2 Be1 61.Kd3 Bb4 62.Bd4 Be1 63.Bc3 Bf2 64.Bb4 Bb6 65.Ke4 Bf2 66.Bc3 Bc5 67.Bd4 Bb4 68.Bb2 Bc5 69.Bc3 Ba3 70.Bd4 Bb4 1/2-1/2
2019.06.02 Groninger Combinatie Open
2385138 FM De Boer, Eelke (2333) FM Duijker, R (2164) 0-1
1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 e5 5.Nb5 a6 6.Nd6+ Bxd6 7.Qxd6 Qf6 8.Qd1 Qg6 9.Nc3 d5 10.Nxd5 Qxe4+ 11.Ne3 Nf6 12.Bd3 Qb4+ 13.c3 Qe7 14.O-O O-O 15.Bc2 Be6 16.Qf3 Rad8 17.Nf5 Bxf5 18.Qxf5 Qd7 19.Qf3 Qd5 20.Qe2 e4 21.Be3 Ne5 22.Rfd1 Qc4 23.Qxc4 Nxc4 24.Bd4 b5 25.b3 Na3 26.Bxf6 Rxd1+ 27.Rxd1 Nxc2 28.Be7 Rc8 29.Kf1 f5 30.Rd8+ Rxd8 31.Bxd8 b4 32.Ba5 bxc3 33.Bxc3 Na3 34.Ke2 Kf7 35.Ke3 g5 36.Kd4 Nb5+ 37.Kc4 f4 38.a4 Nc7 39.b4 Ke6 40.Bd4 g4 41.Bc3 Nd5 42.Kd4 e3 43.fxe3 Nxe3 44.Ke4 Nxg2 45.Be5 f3 46.Bg3 h5 47.b5 axb5 48.axb5 h4 49.Bf2 Kd6 50.Kd4 g3 51.hxg3 h3 52.g4 h2 53.Bg3+ Kd7 54.Bxh2 f2 55.b6 Kc6 0-1
2019.06.01 Groninger Combinatie Open
2385106 GM Ernst, S (2540) FM Duijker, R (2164) 1-0
1.Nf3 Nf6 2.c4 e6 3.Nc3 d5 4.d4 Be7 5.Bg5 O-O 6.e3 Nbd7 7.Bd3 dxc4 8.Bxc4 c5 9.O-O a6 10.a4 b6 11.Qe2 Bb7 12.Rfd1 Nd5 13.Bxe7 Nxc3 14.bxc3 Qxe7 15.e4 Nf6 16.Bd3 Bc6 17.Ne5 Qb7 18.f3 cxd4 19.cxd4 Rfc8 20.Rdb1 Nd7 21.Nc4 Qc7 22.e5 b5 23.Nd6 Rcb8 24.Qc2 Qb6 25.Bxh7+ Kf8 26.Kh1 g6 27.Bxg6 fxg6 28.Qxg6 Ke7 29.Qg5+ Kf8 30.Qh6+ Ke7 31.Qh4+ Kf8 32.a5 Qa7 33.Rc1 Rc8 34.Qh8+ Ke7 35.Nxc8+ Rxc8 36.Qxc8 1-0
2019.06.01 Groninger Combinatie Open
2385122 FM Duijker, R (2164) Pellikaan, Govert (1980) 1-0
1.d4 Nf6 2.Bg5 Ne4 3.Bf4 d5 4.e3 c5 5.Bd3 cxd4 6.exd4 Qb6 7.Nc3 Bf5 8.Nb5 Na6 9.f3 Rc8 10.c3 g5 11.Be3 Nb8 12.fxe4 dxe4 13.Be2 a6 14.Qb3 axb5 15.Qxb5+ Qxb5 16.Bxb5+ Nd7 17.Ne2 h6 18.Ng3 Bg6 19.h4 g4 20.h5 Bh7 21.Rf1 e6 22.Bxd7+ Kxd7 23.Rxf7+ Kc6 24.Rf6 Kd5 25.Ne2 Bf5 26.Ng3 Be7 27.Rxh6 Bh4 28.Kf2 Rxh6 29.Bxh6 e3+ 30.Bxe3 Rf8 31.Bf4 Be4 32.Ke3 Bxg2 33.Rg1 Bxg3 34.Bxg3 Rf3+ 35.Ke2 Rxg3 36.Kf2 Rh3 37.Rxg2 Rxh5 38.Rxg4 Kc4 39.Rg2 Kd3 40.Kf3 Rf5+ 41.Kg4 Rf8 42.Rh2 b5 43.a3 Ke4 44.Re2+ Kd3 45.Re5 Rb8 46.Rxe6 Kc2 47.Re2+ Kd3 48.Rh2 Ke4 49.Kg5 Kd3 50.Kf6 Ke4 51.Ke6 Rb6+ 52.Kd7 Rg6 53.Rh5 b4 54.axb4 Rg2 55.b5 Rxb2 56.Kc6 Rc2 57.Rc5 1-0
2019.05.31 Groninger Combinatie Open
2385100 FM Duijker, R (2164) De Boer, Rein (2053) 1-0
1.d4 Nf6 2.Bg5 d5 3.Bxf6 exf6 4.e3 Bd6 5.g3 O-O 6.Bg2 c6 7.Ne2 Nd7 8.O-O f5 9.Nd2 b5 10.a4 b4 11.c4 bxc3 12.bxc3 Ba6 13.c4 Nf6 14.Nc3 Bb4 15.Qb3 Rb8 16.Rfc1 Ne4 17.Ndxe4 Bxc4 18.Qc2 fxe4 19.Nxe4 f5 20.Nd2 Bxd2 21.Qxd2 Qb6 22.Bf1 Qb4 23.Qc2 Bxf1 24.Kxf1 Rf6 25.Rab1 Qf8 26.Rxb8 Qxb8 27.Rb1 Qc8 28.Kg2 g5 29.Qb3 Rf8 30.f3 Qe6 31.Kf2 g4 32.Qd1 Re8 33.Rb3 h5 34.Qe2 Kg7 35.a5 h4 36.Rb7+ Kf6 37.Rh7 hxg3+ 38.hxg3 Kg6 39.Rh4 Qf6 40.fxg4 fxg4+ 41.Kg2 Qf3+ 42.Qxf3 gxf3+ 43.Kxf3 Rf8+ 44.Ke2 Rb8 45.Rh1 Rb2+ 46.Kd3 Rb3+ 47.Kd2 Ra3 48.Rc1 Rxa5 49.Rxc6+ Kf5 50.Ke2 Ke4 51.Re6+ Kf5 52.Re7 Kg4 53.Rg7+ Kf5 54.Kf3 Ra1 55.Re7 Ra5 56.g4+ Kf6 57.Re5 Rb5 58.Kf4 a5 59.Re8 Rb1 60.g5+ Kg6 61.Re6+ Kf7 62.Rf6+ Ke7 63.Ra6 Rf1+ 64.Ke5 Rf3 65.Re6+ Kf7 66.Kxd5 a4 67.e4 a3 68.Ra6 Rg3 69.e5 Rxg5 70.Rxa3 Ke7 71.Ra7+ Kd8 72.Kd6 Rf5 73.Ra8# 1-0
2019.05.30 Groninger Combinatie Open
2385079 Oord, Raymon (1948) FM Duijker, R (2164) 0-1
1.d4 Nf6 2.Nf3 c5 3.c3 b6 4.Bf4 Bb7 5.e3 e6 6.Nbd2 Be7 7.Bd3 O-O 8.Qe2 d6 9.e4 cxd4 10.cxd4 Nc6 11.a3 e5 12.dxe5 Nh5 13.Bg3 Nxg3 14.hxg3 dxe5 15.Nc4 Nd4 16.Nxd4 exd4 17.Qh5 h6 18.Ne5 Rc8 19.Qg4 Rc5 20.f4 Qc7 21.Qe2 Rxe5 22.fxe5 Qxe5 23.O-O-O Qxg3 24.Rh3 Qe5 25.Rf1 Bc8 26.Rh5 Bg5+ 27.Kb1 Be6 28.Ba6 Rd8 29.Bd3 Rc8 30.Qf3 b5 31.Qd1 a5 32.Rf2 g6 33.Rh1 Rc1+ 34.Qxc1 Bxc1 35.Rxc1 Qg3 36.Rd2 Qe3 37.Rcd1 Bg4 38.Bxb5 Bxd1 39.Rxd1 Qxe4+ 40.Ka2 Qd5+ 0-1
2015.11.25 20th Cultural Village
2968579 FM Kevlishvili, Robby (2354) FM Duijker, R (2291) 1-0
1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 e5 5.Nb5 a6 6.Nd6+ Bxd6 7.Qxd6 Qf6 8.Qxf6 Nxf6 9.Nc3 Nb4 10.Kd2 d6 11.b3 Be6 12.Ba3 a5 13.Re1 Rc8 14.Bb2 Ke7 15.a3 Nc6 16.Kc1 Rhd8 17.Kb1 d5 18.exd5 Nxd5 19.Na4 Bf5 20.Bc4 b5 21.Bxb5 Bxc2+ 22.Kxc2 Nd4+ 23.Kb1 Nxb5 24.Rxe5+ Kf8 25.Rxd5 Rxd5 26.Nb6 Rcd8 27.Nxd5 Rxd5 28.Rc1 Nd6 29.Rc2 h5 30.Bc1 Ke7 31.Rd2 Rb5 32.Ka2 Rc5 33.Bb2 g5 34.b4 axb4 35.axb4 Rc4 36.Kb3 Rh4 37.h3 g4 38.hxg4 Rxg4 39.f3 Rg8 40.Bd4 Nf5 41.Bc5+ Ke6 42.b5 Nh4 43.b6 Nxg2 44.Bd6 Ne1 45.b7 Nxf3 46.Rd1 h4 47.Bc7 h3 48.Bd8 Nd4+ 49.Rxd4 Rg1 50.Kc2 Rg2+ 51.Kc3 h2 52.b8=Q h1=N 53.Qd6+ 1-0
2015.11.24 20th Cultural Village
2968571 FM Duijker, R (2291) WFM Khomeriki, N (2308) 0-1
1.d4 Nf6 2.Bg5 Ne4 3.Bf4 c5 4.f3 Nf6 5.dxc5 Nc6 6.e4 b6 7.cxb6 Qxb6 8.Nd2 Qxb2 9.Rb1 Qxa2 10.Nc4 Qa4 11.Bd2 Nd4 12.Bd3 e6 13.Ra1 Nxc2+ 14.Qxc2 Qxa1+ 15.Ke2 d5 16.Bc3 Qa6 17.Ne5 Qb7 18.Qa4+ Nd7 19.Nh3 Bd6 20.Rb1 Qc7 21.Ba5 Qc5 22.Bb4 Qb6 23.Ba3 Qxb1 24.Bxb1 Bxe5 25.f4 Bf6 26.Qc6 Rb8 27.Bd6 Rb2+ 28.Bc2 Bb7 29.Qc7 d4 30.Kd1 Bd8 31.Qc4 Be7 32.Bxe7 Kxe7 33.Qxd4 Rb6 34.Qxg7 Rd6+ 35.Ke2 Rc8 36.Bd3 Nc5 37.Bb1 Nxe4 38.Bxe4 Bxe4 39.Ng5 Bg6 40.f5 exf5 41.Qe5+ Kd7 42.Qb5+ Rcc6 43.Qb7+ Rc7 44.Qb5+ Kc8 45.Qe8+ Rd8 46.Qa4 Rd5 47.Nf3 f4 48.Nd4 a5 49.Kf3 Bd3 50.Qe8+ Kb7 51.Nb3 Bc4 52.Na1 Bb5 53.Qh8 a4 54.Qxh7 Rd1 55.Qg7 Rf1+ 56.Kg4 f5+ 0-1
2015.11.23 20th Cultural Village
2970570 GM Abasov, N (2544) FM Duijker, R (2291) 1-0
1.d4 Nf6 2.Nf3 g6 3.c4 Bg7 4.Nc3 O-O 5.e4 d6 6.h3 c5 7.d5 e6 8.Bd3 a6 9.a4 Re8 10.O-O b6 11.Be3 Ra7 12.Qd2 exd5 13.exd5 Rae7 14.Bf4 Nh5 15.Bg5 Bf6 16.Bh6 Bg7 17.Bg5 Bf6 18.g4 Bxg5 19.Nxg5 Nf6 20.Qf4 Kg7 21.Kg2 h6 22.Nf3 Qc7 23.Bc2 Nbd7 24.Qg3 Ne5 25.Nd2 g5 26.f4 Nexg4 27.hxg4 Nxg4 28.fxg5 Re2+ 29.Nxe2 Rxe2+ 30.Kg1 Rxd2 31.gxh6+ Kh8 32.Qe1 Rxc2 33.Qe8+ Kh7 34.Rxf7+ Qxf7 35.Qxf7+ Kh8 36.Qg7# 1-0
2015.11.22 20th Cultural Village
2970563 FM Duijker, R (2291) GM Hansen, Eric (2573) 0-1
1.c4 g6 2.Nc3 Bg7 3.g3 Nf6 4.Bg2 O-O 5.e4 e5 6.Nge2 Nc6 7.O-O Nh5 8.d3 d6 9.f4 exf4 10.gxf4 f5 11.Be3 Be6 12.Nd5 Qd7 13.Qd2 Rae8 14.Rae1 Kh8 15.b4 a6 16.a4 fxe4 17.dxe4 Bh3 18.b5 Bxg2 19.Kxg2 Nd8 20.Ndc3 Qg4+ 21.Ng3 Ne6 22.Ne2 Nxg3 23.Nxg3 Bh6 24.f5 Ng5 25.Qd4+ Re5 26.Bf4 Bg7 27.f6 Bxf6 28.Bxe5 dxe5 29.Qc5 Ne6 30.Qa3 Kg7 31.Rd1 Rf7 32.c5 axb5 33.axb5 h5 34.Qf3 Qxf3+ 35.Rxf3 Nxc5 36.Rdf1 h4 37.Ne2 Nxe4 38.Re3 Nd2 39.Rd1 Bg5 40.Rd3 Nc4 41.Rb1 e4 42.Rd4 Nd2 43.Rd1 e3 44.Nc3 Bf6 45.Rd3 Bxc3 46.Rxc3 Rf2+ 47.Kh3 e2 48.Rxc7+ Rf7 49.Rxf7+ Kxf7 50.Re1 Nf3 51.Rxe2 Ng1+ 0-1
2015.11.20 20th Cultural Village
2970560 GM Pruijssers, R (2498) FM Duijker, R (2291) 1-0
1.e4 e6 2.d4 d5 3.e5 c5 4.c3 Nc6 5.Nf3 Bd7 6.Be2 f6 7.O-O fxe5 8.Nxe5 Nxe5 9.dxe5 Qc7 10.c4 d4 11.Bf4 O-O-O 12.Bd3 Ne7 13.Re1 Nc6 14.Nd2 Be7 15.Ne4 Rdf8 16.Bg3 h5 17.h3 g5 18.a3 g4 19.h4 Kb8 20.Qd2 Ka8 21.Rab1 Qd8 22.b4 Bxh4 23.b5 Bxg3 24.bxc6 Bxf2+ 25.Nxf2 Bxc6 26.Be4 Bxe4 27.Nxe4 Rf5 28.Nd6 Qh4 29.Nxf5 exf5 30.Qf4 1-0
2015.11.19 20th Cultural Village
2970553 FM Duijker, R (2291) IM Kerigan, D (2388) 1/2-1/2
1.c4 g6 2.Nc3 Bg7 3.g3 Nf6 4.Bg2 d6 5.Nf3 O-O 6.O-O e5 7.d3 Re8 8.Rb1 c6 9.Bg5 Nbd7 10.Qc1 a5 11.b3 Nc5 12.a3 Ne6 13.Bh6 Bxh6 14.Qxh6 Ng4 15.Qd2 f5 16.b4 axb4 17.axb4 Nd4 18.e3 Nxf3+ 19.Bxf3 Qg5 20.Ra1 Be6 21.Qe2 e4 22.Bxg4 exd3 23.Qxd3 Qxg4 24.Qxd6 Qxc4 25.Qc5 Red8 26.Rfd1 Qxc5 27.bxc5 Rxd1+ 28.Rxd1 Ra5 29.Rd8+ Kg7 30.Rb8 Rxc5 31.Rxb7+ Kf6 32.Ne2 Bd5 33.Rb1 Rc2 34.Nd4 Ra2 35.Rc1 c5 36.Nb5 Bf3 37.Nc3 Rd2 38.Kf1 Ke6 39.Ke1 Rb2 40.Na4 Re2+ 41.Kf1 c4 42.Rxc4 Ra2 43.Nc5+ Kf6 44.Rc1 Kg5 45.h3 1/2-1/2
2015.11.18 20th Cultural Village
2970547 WIM Derakhshani, D (2365) FM Duijker, R (2291) 1/2-1/2
1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.e5 c5 5.a3 Bxc3+ 6.bxc3 Ne7 7.Qg4 O-O 8.Bd3 f5 9.exf6 Rxf6 10.Bg5 Nd7 11.Qh4 h6 12.Bxf6 Nxf6 13.dxc5 e5 14.f3 Nf5 15.Bxf5 Bxf5 16.O-O-O Qe7 17.Qb4 a5 18.Qb6 Ra6 19.Qb5 Rc6 20.Qxa5 Rxc5 21.Qb4 d4 22.Ne2 Nd5 23.Qb3 Kh7 24.g4 Nxc3 25.Nxc3 Rxc3 26.gxf5 Rxb3 27.cxb3 Qxa3+ 28.Kc2 Qa2+ 29.Kd3 Qxb3+ 30.Ke4 Qe3+ 31.Kd5 Qf4 32.Ke6 Qxf3 33.Kxe5 Qe3+ 34.Kd5 Qf3+ 35.Ke5 d3 36.Kd4 Qxf5 37.Rxd3 Qd7+ 38.Ke3 Qh3+ 39.Kd4 Qg4+ 40.Kc3 b5 41.Rhd1 Qc4+ 42.Kb2 Qb4+ 43.Kc2 Qc4+ 44.Kb2 h5 45.Rd4 Qc5 46.Kb3 g6 47.h4 Kg7 48.Re4 Qc6 49.Red4 Kf7 50.Re1 Qc5 51.Ree4 Kf6 52.Rf4+ Kg7 53.Rd7+ Kh6 54.Rfd4 Qc1 55.Kb4 Qb2+ 56.Kc5 Qb3 57.Rb7 Qc3+ 58.Kd5 Qf3+ 59.Re4 Qd3+ 60.Rd4 Qf3+ 61.Re4 Qf5+ 62.Kd4 Qf2+ 63.Kd5 Qf5+ 64.Kd4 Qf6+ 65.Kd5 Qf5+ 1/2-1/2
2015.11.17 20th Cultural Village
2970545 FM Duijker, R (2291) FM Lai, Hing Ting (2319) 0-1
1.d4 e6 2.e4 d5 3.Nc3 Nf6 4.exd5 exd5 5.Be3 c6 6.Qd2 Be7 7.O-O-O O-O 8.f3 b5 9.g4 Nbd7 10.Bd3 Nb6 11.Kb1 Nc4 12.Bxc4 dxc4 13.Qg2 b4 14.Ne4 Nd5 15.Bc1 a5 16.Ne2 a4 17.N2g3 b3 18.a3 c3 19.bxc3 bxc2+ 20.Qxc2 Rb8+ 21.Ka1 Rb3 22.c4 Ne3 23.Bxe3 Rxa3+ 24.Kb2 Qb6+ 25.Kc1 Qb4 26.Nf6+ Bxf6 0-1
2015.11.16 20th Cultural Village
2972513 IM Ris, R (2406) FM Duijker, R (2291) 1/2-1/2
1.Nf3 Nf6 2.g3 d5 3.Bg2 c6 4.O-O Bg4 5.d4 Nbd7 6.Bf4 Nh5 7.Qd2 Nxf4 8.Qxf4 Bxf3 9.Bxf3 Qb8 10.Qd2 e6 11.c4 dxc4 12.Rc1 Nb6 13.a4 a5 14.Na3 Bb4 15.Qg5 O-O 16.Nxc4 Nxc4 17.Rxc4 Qd8 18.Qg4 Qd6 19.Rd1 e5 20.Qf5 Rad8 21.Rd3 exd4 22.e3 g6 23.Qg4 f5 24.Qh3 Qe7 25.exd4 Rfe8 26.Kg2 Qf7 27.Rc1 Qf6 28.Rcd1 Re1 29.Rxe1 Bxe1 30.Qh6 Rxd4 31.Re3 Bb4 32.Re8+ Bf8 33.Qe3 Rd8 34.Qb3+ Kh8 35.Rxd8 Qxd8 36.Qxb7 Bc5 37.Qxc6 Qd4 38.Kh3 Kg7 39.Qc7+ Kh6 40.Qf4+ Qxf4 41.gxf4 1/2-1/2
2014.07.19 8th Leiden Open A 2014
3166803 IM Van Assendelft, F (2380) FM Duijker, R (2256) 1/2-1/2
1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.exd5 exd5 5.Bd3 Nc6 6.Ne2 Be6 7.O-O Qd7 8.Na4 O-O-O 9.c3 Bd6 10.Be3 Nge7 11.Nc5 Bxc5 12.dxc5 Bf5 13.Nd4 Nxd4 14.Bxd4 f6 15.Re1 Bxd3 16.Qxd3 Nc6 17.Re2 Rde8 18.Rae1 Rxe2 19.Rxe2 1/2-1/2
2014.07.18 8th Leiden Open A 2014
3166794 FM Duijker, R (2256) GM Van der Wiel, J (2424) 1/2-1/2
1.d4 Nf6 2.Bg5 c5 3.Bxf6 gxf6 4.d5 Qb6 5.Qc1 f5 6.c4 Bg7 7.Nc3 d6 8.e3 Nd7 9.Qc2 Qa5 10.Nf3 b5 11.cxb5 Nb6 12.Nd2 Bxc3 13.bxc3 Nxd5 14.c4 Qc3 15.Qxc3 Nxc3 16.a4 Ne4 17.Nxe4 fxe4 18.a5 Be6 19.Be2 Rg8 1/2-1/2
2014.07.15 8th Leiden Open A 2014
3166777 FM Duijker, R (2256) GM Sengupta, D (2533) 0-1
1.d4 e6 2.e4 d5 3.Nc3 Nf6 4.Bg5 Bb4 5.e5 h6 6.Bd2 Bxc3 7.bxc3 Ne4 8.Qg4 Kf8 9.Bd3 Nxd2 10.Kxd2 c5 11.Nf3 c4 12.Be2 Nc6 13.h4 Bd7 14.h5 Qe7 15.a4 Rb8 16.Qf4 a6 17.Rhb1 Ke8 18.Qg3 Rg8 19.Nh2 Kd8 20.Ng4 Kc7 21.f4 b5 22.axb5 axb5 23.Ke3 f5 24.exf6 gxf6 25.Qh4 Rgf8 26.Nxh6 Qh7 27.Ng4 Qxc2 28.Rc1 Qe4+ 29.Kf2 Qxf4+ 30.Kg1 f5 31.Rf1 Qd6 32.Nf6 Kb7 33.g4 Rxf6 34.Qxf6 Qg3+ 35.Kh1 Qh3+ 36.Kg1 Qxc3 37.Rad1 Qe3+ 38.Rf2 c3 39.Bd3 Rg8 40.Qf7 Rxg4+ 41.Kf1 Qh3+ 42.Ke1 Rg1+ 43.Bf1 Rxf1+ 44.Rxf1 Qe3# 0-1
2014.03.01 74th Noteboom Open 2014
3216491 Pijpers, A (2348) FM Duijker, R (2254) 1-0
1.e4 c5 2.Nc3 Nc6 3.Nge2 Nf6 4.d4 cxd4 5.Nxd4 d6 6.Be2 g6 7.Be3 Bg7 8.Qd2 O-O 9.O-O-O Nxd4 10.Bxd4 Be6 11.Kb1 Qa5 12.Bxf6 exf6 13.Nd5 Qc5 14.Qf4 Bxd5 15.Rxd5 Qb6 16.Rxd6 Qc7 17.Rhd1 Rfe8 18.Bb5 Re5 19.Rd7 Qc5 20.Ba4 f5 21.Bb3 Rf8 22.f3 b5 23.a3 a5 24.g4 a4 25.Ba2 b4 26.axb4 Qxb4 27.Rxf7 Rb5 28.Rxf5+ Kh8 29.Rxf8+ Qxf8 30.Qxf8+ Bxf8 31.c3 1-0
2014.03.01 74th Noteboom Open 2014
3216513 FM Duijker, R (2254) Peiter, A (2076) 1-0
1.d4 Nf6 2.Bg5 Ne4 3.Bf4 d6 4.f3 Nf6 5.e4 g6 6.Nc3 Bg7 7.Qd2 Nbd7 8.O-O-O c5 9.dxc5 Nxc5 10.e5 Nfd7 11.exd6 e6 12.b4 Na6 13.a3 Qf6 14.Nge2 h6 15.Be3 g5 16.Bd4 Qg6 17.Bxg7 Qxg7 18.Qd4 O-O 19.h4 Nab8 20.hxg5 hxg5 21.Ne4 f6 22.N2g3 Nc6 23.Qb2 Nce5 24.Nh5 Qg6 25.Bd3 Nxd3+ 26.Rxd3 b6 27.Rc3 Bb7 28.Rc7 Bxe4 29.Rxd7 Bd5 30.Rg7+ Qxg7 31.Nxg7 Kxg7 32.Qc3 Rac8 33.Qd3 f5 34.Qa6 1-0
2013.12.01 Cultural Village 2013
3244907 FM Duijker, R (2251) Van Foreest, Jorden (2330) 1/2-1/2
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nge7 5.O-O g6 6.d4 exd4 7.Nxd4 Bg7 8.Nxc6 Nxc6 9.Nc3 O-O 10.Be3 d6 11.Bxc6 bxc6 12.Bd4 f6 13.Ne2 Qe7 14.f3 a5 15.c4 a4 16.Bc3 Be6 17.b3 Rfd8 18.Nd4 Bd7 19.Re1 Qf7 20.Qd3 Re8 21.f4 f5 22.exf5 Bxf5 23.Nxf5 Qxf5 24.Qxf5 gxf5 25.Bxg7 Kxg7 26.b4 a3 27.Kf2 Kf6 28.Rxe8 Rxe8 29.Re1 Rb8 30.Rb1 d5 31.c5 d4 32.Ke2 Re8+ 33.Kd3 Re3+ 34.Kd2 Ke6 35.b5 cxb5 36.Rxb5 Kd5 37.c6+ Kxc6 38.Rxf5 Kd6 39.Rf6+ Kd5 40.f5 c5 41.Rf8 Re4 42.Rd8+ Kc4 43.g3 Re3 44.f6 Rf3 45.Rd6 h5 46.Ke2 Rf5 47.h3 Kc3 48.g4 hxg4 49.hxg4 Re5+ 50.Kd1 Re4 51.f7 Rf4 52.Rd7 d3 53.Ke1 c4 54.g5 Kc2 55.g6 c3 56.g7 d2+ 57.Ke2 Rxf7 58.g8=Q d1=Q+ 59.Rxd1 Re7+ 60.Kf3 Kxd1 61.Qb3+ c2 62.Qd3+ Kc1 63.Qxa3+ Kb1 64.Qb3+ Kc1 65.Qa3+ Kd1 66.Qxe7 1/2-1/2
2013.12.01 Cultural Village 2013
3244913 Pijpers, A (2366) FM Duijker, R (2251) 1/2-1/2
1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.e5 c5 5.a3 Bxc3+ 6.bxc3 Ne7 7.Qg4 O-O 8.Bd3 Nbc6 9.Bg5 Qe8 10.h4 f5 11.exf6 e5 12.Qg3 Nf5 13.Bxf5 exd4+ 14.Ne2 Bxf5 15.Bh6 Rf7 16.Bxg7 Bxc2 17.Ra2 d3 18.Bh6+ Kh8 19.Bg7+ Kg8 20.Bh6+ 1/2-1/2
2013.12.01 Cultural Village 2013
3244916 FM Duijker, R (2251) Lai, Hing Ting (2169) 1-0
1.d4 e6 2.c4 Nf6 3.g3 d5 4.Nf3 Be7 5.Bg2 O-O 6.O-O dxc4 7.a4 c5 8.Na3 cxd4 9.Qxd4 Qxd4 10.Nxd4 e5 11.Ndb5 Nc6 12.Nc7 Rb8 13.Nxc4 Nd4 14.Be3 Bg4 15.Nxe5 Nc2 16.Nxg4 Nxg4 17.Bxa7 Nxa1 18.Bxb8 Rxb8 19.Rxa1 Bf6 20.h3 Nh6 21.Nd5 Bxb2 22.Rb1 Ba3 23.a5 Bd6 24.Ne3 Bc7 25.Nc4 Nf5 26.Bxb7 Bxa5 27.Nxa5 Nd6 28.Rb6 Rd8 29.Nc6 Rd7 30.Ba6 g6 31.Rb8+ Kg7 32.Rd8 Rxd8 33.Nxd8 Kf6 34.Bd3 Ke7 35.Nc6+ Kd7 36.Ne5+ Ke6 37.Nc4 Ne8 38.Kg2 Ng7 39.Nd2 Ke7 40.h4 Ne6 41.Nf3 Nc5 42.Bc2 Na6 43.Ng5 Nb4 44.Bb1 h6 45.Ne4 1-0
2013.12.01 Cultural Village 2013
3244924 FM Erwich, Frank (2319) FM Duijker, R (2251) 1-0
1.e4 e6 2.d4 d5 3.exd5 exd5 4.c4 Nf6 5.Nc3 Be7 6.Nf3 O-O 7.cxd5 Nxd5 8.Bd3 Be6 9.O-O Nd7 10.Re1 c6 11.a3 Re8 12.Bc2 Qc7 13.Ng5 Bxg5 14.Bxg5 Nxc3 15.bxc3 Qa5 16.Qd2 Nb6 17.Re5 Bd5 18.Be7 Nc4 19.Qd3 g6 20.Re2 Qc7 21.Rae1 Be6 22.Bf6 Nd6 23.Qg3 Qd7 24.Qg5 Rec8 25.Rxe6 fxe6 26.Bxg6 hxg6 27.Qxg6+ Kf8 28.Qh6+ Kg8 29.Qh8+ Kf7 30.Qg7+ Ke8 31.Qg8# 1-0
2013.11.30 Cultural Village 2013
3244880 FM Duijker, R (2251) IM Ris, R (2416) 1-0
1.d4 Nf6 2.Bg5 d5 3.Bxf6 exf6 4.e3 Bd6 5.g3 c6 6.Bg2 f5 7.Ne2 Nd7 8.Nd2 Nf6 9.a3 O-O 10.O-O Be6 11.c4 Re8 12.cxd5 Bxd5 13.Nc3 Bxg2 14.Kxg2 c5 15.dxc5 Bxc5 16.Nb3 Bf8 17.Qf3 Qb6 18.Nd4 g6 19.b4 Ne4 20.Nxe4 fxe4 21.Qe2 Bg7 22.Rad1 Rad8 23.Nb3 h5 24.h4 Qc7 25.Rxd8 Rxd8 26.Rc1 Qe7 27.Qc4 b6 28.Rc2 Rd3 29.Nd2 Rxa3 30.Nxe4 Be5 31.Qd5 a5 32.Rc8+ Kg7 33.Qa8 axb4 34.Rg8+ Kh7 35.Qc8 Bf6 36.Re8 b3 37.Rxe7 Bxe7 38.Qe8 1-0
2013.11.30 Cultural Village 2013
3244889 FM Duijker, R (2251) Dijkhuis, Tycho (2206) 1-0
1.d4 g6 2.e4 Bg7 3.Nc3 d6 4.Be3 Nf6 5.f3 c6 6.Qd2 b5 7.O-O-O Nbd7 8.Kb1 Qc7 9.h4 h5 10.Nh3 Nb6 11.Bd3 Nfd7 12.Ng5 b4 13.Ne2 c5 14.dxc5 dxc5 15.Bb5 a6 16.Bxd7+ Bxd7 17.Nf4 O-O 18.Nd5 Nxd5 19.Qxd5 Bb5 20.Qxc5 Qa5 21.Qxe7 Bxb2 22.Rd6 Bg7 23.Rxg6 b3 24.Rxg7+ Kxg7 25.Ne6+ Kh7 26.Nxf8+ Rxf8 27.axb3 Qd8 28.Qe5 f5 29.Bd4 Qd7 30.exf5 Qf7 31.Re1 Re8 32.Qg3 Bd3 33.Kb2 Rxe1 34.Qxe1 Bxf5 35.Qe5 Bd7 36.g4 hxg4 37.h5 Qg8 38.Qe7+ Kh6 39.Qxd7 gxf3 40.Qf5 Qg5 41.Be3 1-0
2013.11.30 Cultural Village 2013
3244891 IM Riemersma, L (2443) FM Duijker, R (2251) 1-0
1.d4 Nf6 2.c4 c5 3.d5 b5 4.cxb5 a6 5.bxa6 Bxa6 6.Nc3 g6 7.e4 Bxf1 8.Kxf1 d6 9.Nf3 Bg7 10.g3 O-O 11.Kg2 Nbd7 12.a4 Ng4 13.Nd2 f5 14.exf5 gxf5 15.Qe2 Nb6 16.Nf3 Qd7 17.Rd1 Nxa4 18.Nxa4 Rxa4 19.Rxa4 Qxa4 20.Qe6+ Kh8 21.Re1 Qc2 22.Be3 Qe4 23.Bg5 Qxe6 24.Rxe6 Nf6 25.Rxe7 Nxd5 26.Rb7 Nf6 27.b3 d5 28.Nh4 Ne4 29.Be7 Rc8 30.Nxf5 c4 31.bxc4 dxc4 32.f3 Nf6 33.Ba3 Bf8 34.Bb2 c3 35.Bxc3 Rxc3 36.Rf7 1-0
2013.11.30 Cultural Village 2013
3244898 FM Duijker, R (2251) IM Van Delft, M (2424) 1/2-1/2
1.d4 d5 2.Bg5 h6 3.Bh4 c6 4.e3 Qb6 5.Qc1 e5 6.Nf3 exd4 7.exd4 Be7 8.Bxe7 Nxe7 9.Bd3 O-O 10.O-O Bf5 11.Bxf5 Nxf5 12.c3 Nd6 13.Nbd2 Nd7 14.Re1 Rfe8 15.Qc2 Nf8 16.Ne5 Re6 17.Re3 Rae8 18.Rae1 f6 19.Ng4 Rxe3 20.Rxe3 Rxe3 1/2-1/2
2013.11.30 Cultural Village 2013
3244902 IM Klein, Da (2489) FM Duijker, R (2251) 1-0
1.e4 c5 2.Nf3 Nc6 3.Bb5 Na5 4.c3 a6 5.Ba4 b5 6.Bc2 Bb7 7.O-O e6 8.d4 cxd4 9.cxd4 Rc8 10.Nbd2 Nf6 11.Re1 Be7 12.Bd3 O-O 13.Nf1 Nc4 14.Ng3 d6 15.b3 Nb6 16.Bd2 Nbd7 17.Qe2 d5 18.e5 Ne4 19.Nxe4 dxe4 20.Bxe4 Bxe4 21.Qxe4 Nb6 22.Ba5 Rb8 23.Rac1 Qd7 24.Bxb6 Rxb6 25.Rc2 f5 26.exf6 Bxf6 27.Rec1 Rd8 28.g3 Rd6 29.Rc7 Qe8 30.R1c6 a5 31.Kg2 a4 32.Rxd6 Rxd6 33.Qb7 Rd8 34.Rc5 axb3 35.axb3 Rb8 36.Qe4 Qd7 37.Qc6 Qxc6 38.Rxc6 Rd8 39.Rb6 Rd5 40.Rxe6 Bxd4 41.Re8+ Kf7 42.Rb8 Bf6 43.h4 h5 44.Ng1 Bc3 45.Ne2 b4 46.Rc8 Rd2 47.Nxc3 bxc3 48.Rxc3 Rb2 49.Rc5 Rxb3 50.Rxh5 Kg6 51.Rg5+ Kh6 52.Rg4 g6 53.Rf4 Kh5 54.Rc4 Rb2 55.Rc5+ Kh6 56.g4 Rb3 57.f3 Ra3 58.Kg3 Rb3 59.Rc6 Kh7 60.Rc7+ Kh6 61.g5+ 1-0
2012.12.30 Groningen Open A
3367824 Dijkhuis, Tycho (2062) FM Duijker, R (2242) 1/2-1/2
1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O Nxe4 5.d4 Nd6 6.Bxc6 dxc6 7.dxe5 Nf5 8.Qxd8+ Kxd8 9.Nc3 h6 10.h3 Bd7 11.b3 Kc8 12.Bb2 b6 13.Rad1 Ne7 14.Ne2 a5 15.a4 c5 16.c4 Bc6 17.Rd3 Ng6 18.h4 Be7 19.h5 Nf8 20.Nf4 Ne6 21.Nxe6 fxe6 22.Rfd1 Kb7 23.Kf1 Raf8 24.Ke2 Rf5 25.g4 Rf4 26.Rg1 Rhf8 27.Rg3 Bh4 28.Rh3 Bg5 29.Rg3 Re4+ 30.Kf1 Ref4 31.Ke2 Kc8 32.Ba1 Re4+ 33.Kf1 Ref4 34.Ke2 Be4 35.Rc3 Bb1 36.Bb2 Re4+ 37.Kf1 Ref4 38.Ke2 Kd7 39.Bc1 Re4+ 40.Be3 Bf4 41.Rg1 Bxe3 42.Rxe3 Rxe3+ 43.Kxe3 1/2-1/2
2012.12.29 Groningen Open A
3367796 FM Duijker, R (2242) Henseler, J (2076) 0-1
1.d4 Nf6 2.Bg5 d5 3.Bxf6 exf6 4.e3 Bd6 5.g3 c6 6.Bg2 O-O 7.Ne2 Be6 8.O-O f5 9.Nd2 Nd7 10.Rc1 Nf6 11.c4 Qe7 12.cxd5 Bxd5 13.Bxd5 Nxd5 14.Nc3 Nf6 15.Qc2 g6 16.a3 h5 17.Nc4 Bc7 18.b4 a6 19.Rfd1 Rfd8 20.h4 Qe6 21.Qe2 Re8 22.Na4 f4 23.Nc5 Qh3 24.Qf1 Qxf1+ 25.Kxf1 b6 26.Nd3 fxg3 27.Nce5 gxf2 28.Rxc6 Bxe5 29.Nxe5 Ne4 30.Rxb6 Re6 31.Rxe6 fxe6 32.Nxg6 Kh7 33.Nf4 Rg8 34.Nh3 Rg3 35.Ng5+ Nxg5 36.Kxf2 Ne4+ 37.Ke2 Nc3+ 38.Kf2 Nxd1+ 39.Kxg3 Nxe3 40.Kf4 Nc4 41.a4 Kg6 42.Ke4 Kf6 43.d5 e5 44.a5 Nd6+ 45.Kd3 Kf5 0-1
2012.12.23 Groningen Open A
3367645 FM Drozdowski, K (2426) FM Duijker, R (2242) 1-0
1.d4 Nf6 2.Nf3 b5 3.Bg5 Bb7 4.Nbd2 a6 5.Bxf6 gxf6 6.e4 Rg8 7.a4 b4 8.g3 e6 9.Bg2 c5 10.d5 exd5 11.Nh4 d4 12.O-O Nc6 13.Nf5 Qc7 14.Qh5 h6 15.f4 Ne7 16.Nxh6 Bxh6 17.Qxh6 a5 18.Qxf6 Ra6 19.Qe5 Qxe5 20.fxe5 Re6 21.Nb3 Rxe5 22.Nxa5 Ba6 23.Rf6 Rg6 24.Rxg6 Nxg6 25.Bf1 Bxf1 26.Kxf1 Kd8 27.Nc4 Rxe4 28.Re1 Rxe1+ 29.Kxe1 Kc7 30.h4 d5 31.Nd2 Ne5 32.h5 c4 33.h6 d3 34.Kd1 dxc2+ 35.Kxc2 Kb6 36.h7 Ng6 37.Nf3 b3+ 38.Kc3 Ka5 39.Ne5 Nh8 40.Nd7 Kxa4 41.Nb6+ Kb5 42.Nxd5 Kc5 43.Ne3 Ng6 44.Nxc4 Kd5 45.Kxb3 Ke6 46.Ka4 Kf6 47.b4 Kg7 48.b5 Nf8 49.b6 Nd7 50.Kb5 Kxh7 51.b7 f6 52.Kc6 Nb8+ 53.Kd6 Kg6 54.Na5 Kg5 55.Nc6 Na6 56.Nb4 Nxb4 57.b8=Q 1-0
2012.12.21 Groningen Open A
3369651 GM Ernst, S (2562) FM Duijker, R (2242) 1-0
1.d4 Nf6 2.Nf3 e6 3.c4 Bb4+ 4.Nc3 d5 5.g3 c5 6.Bg2 Nc6 7.O-O dxc4 8.dxc5 Qxd1 9.Rxd1 Bxc3 10.bxc3 Ne4 11.Bb2 Nxc5 12.Nd2 Na4 13.Ba3 Nxc3 14.Nxc4 Nxd1 15.Rxd1 Bd7 16.Nd6+ Kd8 17.Nxf7+ Kc7 18.Bd6+ Kb6 19.Bf4 e5 20.Rxd7 exf4 21.Nxh8 Rxh8 22.gxf4 g6 23.e3 a5 24.a4 h6 25.h4 Rb8 26.Rd6 Kc5 27.Rd5+ Kb4 28.Rb5+ Kxa4 29.Bxc6 Rc8 30.Bd7 Rc1+ 31.Kg2 1-0
2012.08.11 16th HZ Open
3427814 IM Haimovich, T (2388) FM Duijker, R (2219) 0-1
1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.e5 c5 5.Bd2 Ne7 6.a3 Bxc3 7.Bxc3 Nbc6 8.Nf3 cxd4 9.Nxd4 O-O 10.Qh5 Nxd4 11.Bxd4 Nf5 12.O-O-O Bd7 13.Bd3 Qh4 14.Qxh4 Nxh4 15.g3 Nf3 16.Bc5 Rfc8 17.Bd6 Ba4 18.Kb1 f6 19.exf6 gxf6 20.b3 Be8 21.Kb2 Bg6 22.Bf4 Rc6 23.Bxg6 hxg6 24.Rd3 Ne5 25.Bxe5 fxe5 26.f3 Rac8 27.c3 Kf7 28.Re1 Kf6 29.Re2 Rh8 30.a4 a5 31.h4 Rh5 32.Rh2 Rf5 33.Rc2 Ke7 34.c4 Kd6 35.Rcd2 Rc5 36.Re2 Rc7 37.Ka3 b6 38.Red2 Rc5 39.Kb2 Rh5 40.Re2 g5 41.hxg5 Rxg5 42.g4 Rc8 43.Rh2 Rg6 44.Rh5 Rf8 45.Re3 e4 46.fxe4 d4 47.Rg3 Rf2+ 48.Kc1 e5 49.Kd1 Rf4 50.Rh8 Rgxg4 51.Rd8+ Kc7 52.Rxg4 Rxg4 53.Rd5 Rxe4 54.c5 Re3 55.cxb6+ Kxb6 56.Kc2 Rc3+ 57.Kd2 Rc5 58.Rd8 Kc6 59.Rc8+ Kd5 60.Rd8+ Ke4 61.Rb8 Rc3 62.b4 axb4 63.Rxb4 Rh3 64.a5 Rh2+ 65.Kc1 Ke3 66.Ra4 d3 67.Ra3 Rc2+ 68.Kd1 Rh2 69.Kc1 Rh1+ 70.Kb2 Ke2 71.a6 d2 72.a7 d1=Q 73.a8=Q Qb1+ 74.Kc3 Rc1# 0-1
2012.08.10 16th HZ Open
3427778 FM Duijker, R (2219) Hulpia, F (2090) 1-0
1.Nf3 d5 2.g3 Nf6 3.Bg2 c6 4.O-O Bg4 5.d4 Nbd7 6.c4 e6 7.h3 Bxf3 8.Bxf3 dxc4 9.Qc2 Nb6 10.Rd1 Be7 11.a4 a5 12.Na3 O-O 13.Nxc4 Nxc4 14.Qxc4 Qb6 15.b3 Rfd8 16.Bb2 Rd7 17.e3 Nd5 18.Rac1 Nb4 19.Kg2 Rad8 20.h4 Qa6 21.Qxa6 Nxa6 22.Rc4 Nb4 23.Be4 Bf6 24.g4 h6 25.Rh1 Be7 26.Kg3 Nd5 27.Re1 Bb4 28.Re2 Rd6 29.f4 b6 30.Kf3 c5 31.g5 h5 32.Rec2 Ne7 33.dxc5 Bxc5 34.Be5 R6d7 35.Rxc5 bxc5 36.Rxc5 Nd5 37.Rxa5 Rb7 38.Rb5 Rxb5 39.axb5 f6 40.gxf6 gxf6 41.Bd4 Rb8 42.Bd3 Kf7 43.e4 Nb6 44.Ke3 Ke7 45.Bc5+ Kd7 46.Be2 Nc8 47.b4 Nd6 48.b6 Nc8 49.Bxh5 Nxb6 50.Bd1 Kc6 51.Bb3 Rh8 52.Bxe6 Rxh4 53.Be7 Rh6 54.Bf8 Rh7 55.Bf5 Rf7 56.Bc5 Ra7 57.Kf3 Ra3+ 58.Kg4 Nd7 59.b5+ Kxc5 60.Bxd7 Kd6 61.Bc6 Rb3 62.Kf5 Ke7 63.e5 fxe5 64.Kxe5 Re3+ 65.Kd4 Re1 66.b6 Kf6 67.Be4 Re2 68.Bd3 Rb2 69.Kc5 Rb3 70.Bb5 Rc3+ 71.Bc4 Rh3 72.b7 Rh8 73.Bd3 Ke6 74.Kc6 Rf8 75.Bf1 Ke7 76.Bh3 Rf6+ 77.Kc5 1-0
2012.08.09 16th HZ Open
3427731 Willemsma, A (2109) FM Duijker, R (2219) 1/2-1/2
1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 e5 5.Nb5 a6 6.Nd6+ Bxd6 7.Qxd6 Qf6 8.Qc7 Nge7 9.Nc3 Nb4 10.Bd3 d5 11.O-O d4 12.Na4 Qc6 13.Qxc6+ Nexc6 14.Nb6 Rb8 15.f4 f6 16.fxe5 Nxe5 17.Bf4 Be6 18.Bxe5 fxe5 19.a3 Nc6 20.Rf3 Rf8 21.Raf1 Rxf3 22.Rxf3 Ke7 23.Kf2 Kd6 24.Ke1 Re8 25.Bc4 Bxc4 26.Nxc4+ Kc5 27.b3 b5 28.Nb2 Nd8 29.Nd3+ Kd6 30.b4 Ne6 31.Rf5 Rc8 32.Kd2 Rc3 33.Nxe5 g6 34.Nf7+ Ke7 35.Rf2 Rxa3 36.Ne5 Ng5 37.Re2 Kd6 38.Nd3 a5 39.bxa5 Rxa5 40.e5+ Ke7 41.Nb4 Kd7 42.Nd5 Ne6 43.Nf6+ Kc6 44.Nxh7 d3 45.Re3 dxc2 46.Kxc2 Ra2+ 47.Kb3 Rxg2 48.Rg3 Rxh2 49.Rxg6 Rh3+ 50.Kb4 Rh4+ 51.Kb3 Kd5 52.Nf6+ Kxe5 53.Nd7+ Kd5 54.Nb6+ Kd6 55.Nc8+ Ke5 56.Ne7 Nc5+ 57.Kc2 Rc4+ 58.Kb1 Ne6 59.Rh6 Nd4 60.Rh5+ Ke6 61.Nd5 Nf5 62.Rxf5 Kxf5 63.Ne3+ Ke4 64.Nxc4 bxc4 65.Kc2 Kd4 66.Kd2 c3+ 67.Kc2 Kc4 68.Kc1 Kd3 69.Kd1 c2+ 70.Kc1 Kc3 1/2-1/2
2012.08.08 16th HZ Open
3427684 FM Duijker, R (2219) Boerkamp, Harry (1963) 1-0
1.d4 d5 2.Nf3 Nc6 3.Bf4 Bg4 4.e3 e6 5.c4 Bb4+ 6.Nc3 Nf6 7.Qb3 a5 8.Nd2 O-O 9.Bd3 a4 10.Qc2 Bd6 11.Bxd6 Qxd6 12.a3 e5 13.cxd5 exd4 14.Nc4 Qe7 15.dxc6 dxc3 16.cxb7 cxb2 17.Qxb2 Rab8 18.O-O c6 19.Rab1 Rfd8 20.Ne5 Bd7 21.Bc4 Be8 22.Bxf7+ Bxf7 23.Nxc6 Qc7 24.Nxd8 Qxd8 25.Rfd1 Bd5 26.Qe5 1-0
2012.08.07 16th HZ Open
3427610 IM Raznikov, D (2462) FM Duijker, R (2219) 1-0
1.d4 Nf6 2.Nf3 g6 3.c4 Bg7 4.Nc3 O-O 5.e4 d6 6.h3 c5 7.d5 e6 8.Bd3 exd5 9.cxd5 a6 10.a4 Nbd7 11.O-O Qe7 12.Re1 h6 13.Bf4 Nh5 14.Bh2 Ne5 15.Be2 Kh7 16.Nxe5 Bxe5 17.Bxh5 Bxh2+ 18.Kxh2 Qe5+ 19.g3 gxh5 20.f4 Qf6 21.Qxh5 Rg8 22.e5 dxe5 23.Ne4 Qb6 24.Qxf7+ Kh8 25.Qf6+ Qxf6 26.Nxf6 exf4 27.Nxg8 fxg3+ 28.Kxg3 Kxg8 29.Re8+ Kf7 30.Rae1 Be6 31.Rxa8 1-0
2012.08.06 16th HZ Open
3427581 FM Duijker, R (2219) Van de Groep, W (1994) 1-0
1.d4 e6 2.Nf3 f5 3.g3 Nf6 4.Bg2 Be7 5.c4 O-O 6.O-O d5 7.b3 c6 8.Ba3 Bxa3 9.Nxa3 Ne4 10.Nc2 Nd7 11.Nb4 Ndf6 12.Nd3 Qe8 13.Nfe5 Qh5 14.f3 Ng5 15.h4 Nf7 16.Nxf7 Rxf7 17.e4 Bd7 18.e5 Ne8 19.Nf4 Qh6 20.Qd2 g6 21.Rac1 g5 22.Nh3 f4 23.hxg5 Qg6 24.g4 h6 25.Qc2 Kg7 26.Qxg6+ Kxg6 27.gxh6 Kxh6 28.Rf2 a5 29.a3 a4 30.b4 dxc4 31.Rxc4 Nc7 32.Bf1 Nb5 33.Rh2 Nxa3 34.Bd3 Rh8 35.Ng5+ Kg7 36.Rxh8 Kxh8 37.Nxf7+ 1-0
2012.08.05 16th HZ Open
3431522 FM Duijker, R (2219) Lambregts, Frank (1935) 1-0
1.d4 d5 2.Bg5 Nf6 3.Bxf6 gxf6 4.c4 e5 5.Nc3 c6 6.e3 Be6 7.cxd5 cxd5 8.Nf3 e4 9.Nd2 f5 10.g3 h5 11.h4 Bd6 12.Be2 Nc6 13.Bxh5 Qb8 14.Rg1 Rg8 15.Qb3 f4 16.Ndxe4 Qd8 17.Qxb7 dxe4 18.Qxc6+ Ke7 19.Qxe4 1-0
2012.08.05 16th HZ Open
3431542 IM Zelbel, P (2387) FM Duijker, R (2219) 1-0
1.e4 e6 2.d4 d5 3.Nd2 c5 4.Ngf3 cxd4 5.exd5 Qxd5 6.Bc4 Qd6 7.O-O Nf6 8.Nb3 Nc6 9.Nbxd4 Nxd4 10.Nxd4 a6 11.Re1 Qc7 12.Qe2 Bc5 13.c3 b5 14.Bb3 O-O 15.Bg5 Bb7 16.Rad1 Nd5 17.Qg4 Rfe8 18.Rd3 g6 19.Rh3 e5 20.Nf5 h5 21.Qg3 Qb6 22.Ne3 Nf6 23.Bxf6 Qxf6 24.Rxh5 Kg7 25.Rf5 Reb8 26.Rxf6 1-0
2012.07.21 2nd Science Park Open A
3438397 FM Duijker, R (2195) Hovenga, A (2247) 1/2-1/2
1.d4 Nc6 2.e4 d5 3.exd5 Qxd5 4.Nf3 e5 5.Nc3 Bb4 6.Bd2 Bxc3 7.Bxc3 e4 8.Ne5 Nxe5 9.dxe5 Qxd1+ 10.Rxd1 Ne7 11.Rd4 Bf5 12.Be2 Rd8 13.Rxd8+ Kxd8 14.Kd2 Kc8 15.Bc4 Nd5 16.Bxd5 1/2-1/2
2012.07.19 2nd Science Park Open A
3438328 FM Duijker, R (2195) Zult, D (2252) 0-1
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Be2 e5 7.Nf3 Be7 8.O-O O-O 9.Re1 b5 10.Bf1 Bb7 11.a3 Nbd7 12.Bg5 h6 13.Bxf6 Nxf6 14.Bd3 Qb6 15.Nd2 Rac8 16.Nf1 g6 17.Ne3 h5 18.Qf3 Kh7 19.Ncd5 Bxd5 20.exd5 Rg8 21.Rad1 Rce8 22.c4 Bd8 23.Qh3 e4 24.Be2 Qb7 25.cxb5 axb5 26.g4 Qd7 27.Qf1 Re5 28.Bxb5 Qe7 29.h3 hxg4 30.hxg4 Kg7 31.Be2 Rh8 32.Qg2 Rg5 33.Rd4 Bb6 34.Rb4 Bxe3 35.fxe3 Rh4 36.Kf1 Nxg4 37.Bxg4 Rgxg4 38.Qf2 Qg5 39.Rb7 Rh1+ 40.Ke2 Rxe1+ 41.Kxe1 Rg1+ 42.Ke2 Qh5+ 43.Kd2 Qxd5+ 44.Kc3 Rc1+ 0-1
2012.07.18 2nd Science Park Open A
3438298 Ritsema, R (2054) FM Duijker, R (2195) 0-1
1.d4 Nf6 2.c4 c5 3.d5 b5 4.Nf3 Bb7 5.Qc2 e6 6.e4 bxc4 7.dxe6 fxe6 8.e5 Nd5 9.Bxc4 Nc6 10.O-O Qc7 11.Bxd5 Nb4 12.Qd1 Nxd5 13.Na3 c4 14.Nb5 Qb6 15.Nc3 Be7 16.Qe2 O-O 17.Nxd5 Bxd5 18.Be3 Qb7 19.Ne1 Rab8 20.Bd4 Rf4 21.Qd2 Rg4 22.f3 Rxd4 23.Qxd4 Qxb2 24.Qd1 Qxe5 25.Nc2 Bd6 26.g3 Rb2 27.Kh1 Bc5 28.a3 a5 29.Re1 Qc3 0-1
2012.07.17 2nd Science Park Open A
3438230 FM Klein, Da (2438) FM Duijker, R (2195) 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 Be7 9.Re1 O-O 10.Qe2 Bxf3 11.Qxf3 c5 12.dxc5 Nxc5 13.Bf1 Qd5 14.Qe2 Rfd8 15.Be3 b6 16.c3 Nce4 17.Nxe4 Qxe4 18.g3 Rac8 19.Qa6 Qa8 20.Bg2 Qb8 21.Rad1 Rxd1 22.Rxd1 Rd8 23.Rxd8+ Bxd8 24.h3 h6 25.a4 Nd7 26.Qd3 Nc5 27.Qb5 Qd6 28.Qe8+ Qf8 29.Qc6 Nd3 30.Qb5 Ne1 31.Be4 f5 32.Bb1 Nf3+ 33.Kg2 Ng5 34.Ba2 Qf7 35.Qc6 Kh7 36.h4 Ne4 37.Bxe6 Qf6 38.Qd7 1-0
2012.07.17 2nd Science Park Open A
3438268 FM Duijker, R (2195) GM Pruijssers, R (2525) 0-1
1.d4 f5 2.g3 Nf6 3.Bg2 g6 4.Nf3 Bg7 5.O-O O-O 6.c4 d6 7.Nc3 Qe8 8.e4 fxe4 9.Ng5 Bg4 10.Qb3 Nc6 11.Qxb7 Rb8 12.Qxc7 Rc8 13.Qb7 Nxd4 14.Ncxe4 Nxe4 15.Qxe4 Qd7 16.Be3 Bf5 17.Qh4 h6 18.Ne4 Rxc4 19.Bxh6 Bxh6 20.Qxh6 Ne2+ 21.Kh1 Rxe4 22.f3 Re6 23.g4 Bd3 24.f4 Rf7 25.Bd5 Qb5 26.Bxe6 Be4+ 27.Rf3 Bxf3# 0-1
2012.07.16 2nd Science Park Open A
3441832 FM Klein, Da (2438) FM Duijker, R (2195) 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 Be7 9.Re1 O-O 10.Qe2 Bxf3 11.Qxf3 c5 12.dxc5 Nxc5 13.Bf1 Qd5 14.Qe2 Rfd8 15.Be3 b6 16.c3 Nce4 17.Nxe4 Qxe4 18.g3 Rac8 19.Qa6 Qa8 20.Bg2 Qb8 21.Rad1 Rxd1 22.Rxd1 Rd8 23.Rxd8+ Bxd8 24.h3 h6 25.a4 Nd7 26.Qd3 Nc5 27.Qb5 Qd6 28.Qe8+ Qf8 29.Qc6 Nd3 30.Qb5 Ne1 31.Be4 f5 32.Bb1 Nf3+ 33.Kg2 Ng5 34.Ba2 Qf7 35.Qc6 Kh7 36.h4 Ne4 37.Bxe6 Qf6 38.Qd7 1-0
2012.07.15 2nd Science Park Open A
3438206 FM Duijker, R (2195) FM Schoorl, R (2362) 1/2-1/2
1.d4 d5 2.Bg5 c5 3.dxc5 f6 4.Bd2 e5 5.b4 a5 6.c3 b6 7.cxb6 Qxb6 8.a3 Be6 9.e3 Nd7 10.Bd3 f5 11.Ne2 Ngf6 12.O-O Be7 13.Be1 O-O 14.Nd2 Rfc8 15.Nb3 a4 16.Na5 Nc5 17.Bc2 Qb5 18.c4 dxc4 19.bxc5 Rxa5 20.Bxa5 Qxa5 21.Qb1 g6 22.Qb6 Qxb6 23.cxb6 Nd7 24.b7 Rb8 25.Bxa4 Rxb7 26.Rfd1 Nc5 27.Bc6 Rb2 28.Nc3 Nb3 29.Ra2 Rxa2 30.Nxa2 Bxa3 31.Nc3 Bb4 32.Nd5 Bd2 33.Ba4 Bxd5 34.Bxb3 cxb3 35.Rxd2 Be4 36.Kf1 Kf7 37.f3 Bc2 38.Rd7+ Ke6 39.Rb7 Kd5 40.Ke2 Kc4 41.Kd2 h5 42.Rc7+ Kb4 43.Kc1 f4 44.exf4 exf4 45.Kb2 Bd3 46.Rf7 Bf5 47.Rb7+ Kc4 48.Rxb3 Bd3 49.Rb6 Kd4 50.Re6 g5 51.Re1 Bb5 52.Kc2 Bc6 53.Kd2 g4 54.Ke2 Ke5 55.Rc1 Bd5 56.Rc5 Kd4 57.Rc7 h4 58.fxg4 Bxg2 59.Re7 h3 60.g5 1/2-1/2
2012.07.14 2nd Science Park Open A
3438190 Vereggen, L (2051) FM Duijker, R (2195) 0-1
1.d4 Nf6 2.c4 c5 3.Nf3 cxd4 4.Nxd4 Nc6 5.Nc3 e6 6.Ndb5 d5 7.Bf4 e5 8.cxd5 exf4 9.dxc6 bxc6 10.Qxd8+ Kxd8 11.Rd1+ Bd7 12.Nd4 Kc7 13.g3 Rb8 14.Nb3 Be6 15.Rd3 Bc4 16.Rf3 Bb4 17.Kd1 Bxb3+ 18.axb3 Bxc3 19.Rxc3 Ne4 20.Rf3 Rhd8+ 21.Ke1 Rb5 22.e3 Rbd5 23.exf4 Rd1+ 24.Ke2 R8d2+ 25.Ke3 Re1+ 0-1
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