WORLDBASE

WORLDBASE Players GM Koustav, Chatterjee

Stockfish
GameID: 0
FIDE Country B-Year Gender Standard Rapid Blitz
25073060 IND 2003 M 2484 2396 2435
472 games
2026.08.09 FIDE World Uni Teams KO
3511018 IM Kamalidenova, Meruert (2400) GM Koustav, Chatterjee (2484) 0-1
1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.b4 Bxb4 5.c3 Ba5 6.d4 b5 7.Bxb5 Nxd4 8.Nxd4 exd4 9.O-O Ne7 10.cxd4 O-O 11.Qc2 Rb8 12.a4 a6 13.Be2 d5 14.e5 Nf5 15.Rd1 Qh4 16.Bb2 Rb6 17.Ra3 Ne7 18.Nd2 Bf5 19.Bd3 Rfb8 20.Rb3 Bxd3 21.Qxd3 Ng6 22.Ba3 Qg4 23.Rxb6 Rxb6 24.Qf3 Qxf3 25.Nxf3 Nf4 26.Kf1 Rb3 27.Bc1 Ne6 28.Bd2 Bxd2 29.Rxd2 Rb1+ 30.Ne1 Rb4 31.Nc2 Rxa4 32.Ke2 c6 33.g3 g5 34.Rd1 Rc4 35.Kd3 c5 36.Rb1 cxd4 37.Nb4 Nc5+ 38.Ke2 d3+ 39.Kd2 Kg7 40.Nxd5 Rc2+ 41.Ke3 d2 42.Rd1 Nb3 43.Nb4 Rc3+ 44.Ke2 a5 45.Nd3 Nc1+ 46.Kxd2 Rxd3+ 47.Kxc1 Rxd1+ 48.Kxd1 g4 49.Kc2 Kg6 50.Kb3 Kf5 51.Ka4 Kxe5 52.Kxa5 Ke4 53.Kb4 Kf3 54.Kc4 Kxf2 55.Kd4 Kg2 0-1
2026.08.09 FIDE World Uni Teams KO
3511026 GM Koustav, Chatterjee (2484) IM Isanzhulov, Arystan (2385) 0-1
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Bd3 Re8 6.Ne2 d5 7.O-O Bf8 8.e4 dxe4 9.Nxe4 Nc6 10.Bg5 Be7 11.Be3 Ng4 12.a3 f5 13.N4g3 Nxe3 14.fxe3 Bg5 15.Nf4 e5 16.Nd5 g6 17.Re1 exd4 18.exd4 Rxe1+ 19.Qxe1 Nxd4 20.Qe5 c5 21.Re1 Nc6 22.Qe8+ Qxe8 23.Rxe8+ Kf7 24.Rh8 Kg7 25.Re8 Rb8 26.Nf1 Bc1 27.b4 Bd7 28.Re1 Bb2 29.Nd2 Re8 30.Rb1 Bxa3 31.b5 Nb4 32.Nxb4 Bxb4 33.Nf3 a5 34.Ra1 Kf6 35.Kf2 g5 36.g3 b6 37.Ra2 Rd8 38.h3 Be6 39.Be2 g4 40.hxg4 fxg4 41.Nh2 Rd4 42.Rc2 a4 43.Nf1 a3 44.Rc1 Ke5 45.Ke3 a2 46.Ra1 Re4+ 47.Kf2 Rxe2+ 0-1
2026.08.09 FIDE World Uni Teams KO
3511030 GM Koustav, Chatterjee (2484) IM Isanzhulov, Arystan (2385) 0-1
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Bd3 d5 6.Nf3 b6 7.cxd5 exd5 8.O-O Re8 9.Qc2 a6 10.Bd2 Bd6 11.Rac1 Bb7 12.Ne2 Nbd7 13.Ng3 g6 14.Rfd1 Ne4 15.Be1 Qe7 16.a3 h5 17.Bb4 c5 18.dxc5 bxc5 19.Be1 h4 20.Ne2 h3 21.g3 Qf6 22.Bxe4 Rxe4 23.Nd2 Rae8 24.Nc3 d4 25.Ncxe4 Bxe4 26.Qc4 Bb7 27.f4 g5 28.Qb3 Ba8 29.Nc4 Qe6 30.Qd3 Qd5 31.e4 Rxe4 32.Kf2 Re8 0-1
2026.08.08 FIDE World Uni Teams KO
3511003 GM Koustav, Chatterjee (2484) GM Kacharava, Nikolozi (2521) 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 Bd7 9.Qxc4 Bc6 10.Bg5 Nbd7 11.Nc3 h6 12.Bxf6 Nxf6 13.Rac1 a5 14.Rfd1 Bb4 15.Nb5 Bxf3 16.Bxf3 c6 17.Na3 Qe7 18.Qb3 Bxa3 19.bxa3 Rfd8 20.Qb2 Rd7 21.Rd3 Ne8 22.Rb3 Nd6 23.e3 Nf5 24.Rc5 g6 25.Qc3 Qd8 26.Qc2 h5 27.Qe4 Qc7 28.Qb1 Nd6 29.e4 Qd8 30.d5 cxd5 31.exd5 e5 32.Rbc3 Qe7 33.Qc1 e4 34.Be2 Qe5 35.Rc7 Rad8 36.Rxd7 Rxd7 37.Rc5 b6 38.Rc6 Qxd5 39.Rxb6 Kh7 40.Rb8 Qe5 41.Qc6 Re7 42.Rb6 Nf5 43.Qc8 e3 44.Rb8 exf2+ 45.Kg2 Qe4+ 46.Kh3 Qg4+ 47.Kg2 Nh4+ 48.Kh1 Qf3+ 49.Bxf3 f1=R# 0-1
2026.08.08 FIDE World Uni Teams KO
3511011 GM Gazik, Viktor (2549) GM Koustav, Chatterjee (2484) 1/2-1/2
1.e4 e5 2.Nf3 Nc6 3.Bb5 Bc5 4.O-O Nd4 5.Ba4 Nxf3+ 6.Qxf3 Ne7 7.Qc3 Bd4 8.Qg3 Ng6 9.c3 Bb6 10.Rd1 O-O 11.d4 Qe7 12.dxe5 Qxe5 13.Bc2 d6 14.Nd2 f5 15.Nf3 Qxg3 16.hxg3 Ne5 17.Nd4 fxe4 18.Bxe4 c6 19.Bf4 Bg4 20.Nf3 Nf7 21.Re1 d5 22.Bd3 Rfe8 23.Kf1 Rad8 1/2-1/2
2026.08.07 FIDE World Uni Teams KO
3510975 FM Ulhaq, Zacky Dhia (2338) GM Koustav, Chatterjee (2484) 1/2-1/2
1.d4 Nf6 2.c4 e6 3.Nf3 d5 4.Nc3 Bb4 5.cxd5 exd5 6.Bg5 h6 7.Bh4 g5 8.Bg3 Ne4 9.Nd2 Nxg3 10.hxg3 c6 11.e4 Qe7 12.Qc2 Be6 13.O-O-O Nd7 14.Re1 dxe4 15.Ndxe4 O-O-O 16.d5 Bxc3 17.Nxc3 cxd5 18.Nxd5+ Qc5 19.Qxc5+ Nxc5 20.Nc3 Kb8 21.Be2 Bf5 22.f3 Rc8 23.Kd2 Rhe8 24.Bb5 Red8+ 25.Ke3 a6 26.Be2 Nd3 27.Bxd3 Rxd3+ 28.Kf2 Rd2+ 29.Re2 Rxe2+ 30.Kxe2 Rc6 31.g4 Bg6 32.Ke3 Rb6 33.b3 Rc6 34.Rc1 h5 35.gxh5 Bxh5 36.Ne2 Re6+ 37.Kf2 Rd6 38.Ke3 Bg6 39.Nc3 Re6+ 40.Kd2 Rd6+ 41.Ke3 Re6+ 1/2-1/2
2026.08.07 FIDE World Uni Teams KO
3510991 GM Koustav, Chatterjee (2484) FM Mariano, Fabian Glen (2312) 1/2-1/2
1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Bg5 Ne4 5.Bh4 Nxc3 6.bxc3 dxc4 7.e3 Be6 8.Qb1 b6 9.Nf3 Bg7 10.Ng5 Bd5 11.e4 h6 12.exd5 hxg5 13.Qb5+ c6 14.dxc6 a6 15.Qxc4 Rxh4 16.c7 Qc8 17.cxb8=Q Qxb8 18.g3 Qb7 19.gxh4 Qxh1 20.hxg5 Kf8 21.Rd1 b5 22.Qc5 Qe4+ 23.Be2 Qh1+ 24.Bf1 Qe4+ 25.Be2 Qh1+ 26.Bf1 1/2-1/2
2026.08.06 FIDE World Uni Teams C
3510906 Alimbetov, Dias (2149) GM Koustav, Chatterjee (2484) 0-1
1.d4 Nf6 2.c4 e6 3.Nf3 d5 4.Nc3 Bb4 5.cxd5 exd5 6.Bg5 Nbd7 7.e3 h6 8.Bf4 Ne4 9.Qb3 c5 10.Rc1 Qa5 11.a3 Bxc3+ 12.bxc3 c4 13.Qb4 Qxb4 14.axb4 a5 15.b5 Ndf6 16.Nd2 Nxd2 17.Kxd2 a4 18.f3 Ra5 19.Rb1 Bf5 20.e4 Be6 21.Bc7 Ra8 22.e5 Kd7 23.Bb6 Nh5 24.Ke3 g5 25.g3 a3 26.Be2 a2 27.Ra1 Ra3 28.Rhc1 Rha8 29.Bd1 Rb3 30.Bc5 Bf5 31.Bb4 Rb2 32.Be2 Ng7 33.f4 g4 34.Rd1 Rb1 35.Kd2 h5 36.Rc1 Rb2+ 37.Ke1 Be4 38.Rd1 Nf5 39.Rd2 Rb1+ 40.Rd1 Bc2 0-1
2026.08.05 FIDE World Uni Teams C
3510887 Tsarsitalidis, Konstantinos (2275) GM Koustav, Chatterjee (2484) 0-1
1.e4 e5 2.Nf3 Nc6 3.Nc3 Bb4 4.Nd5 Nf6 5.Nxb4 Nxb4 6.c3 Nc6 7.Bb5 Nxe4 8.Qe2 Nd6 9.Bxc6 dxc6 10.Qxe5+ Qe7 11.d4 f6 12.Qxe7+ Kxe7 13.Bf4 g5 14.Bg3 Be6 15.O-O Kd7 16.Rfe1 h5 17.Nd2 h4 18.Bxd6 cxd6 19.f4 g4 20.f5 Bxf5 21.Rf1 Rh5 22.Rf4 Re8 23.Rd1 b5 24.a4 bxa4 25.d5 cxd5 26.Rxa4 Ra8 27.Rda1 a6 28.Rxa6 Rxa6 29.Rxa6 Bd3 30.Ra7+ Ke8 31.Nb3 Rf5 32.Ra1 g3 33.hxg3 hxg3 34.Rd1 Ba6 35.Nd2 Rf2 36.b4 f5 37.Nf3 Kd7 38.Nd4 Bc4 39.b5 f4 40.Rb1 Bd3 41.Re1 Kc7 42.Ne6+ Kb6 43.Ng5 Bf5 44.Rf1 Rxf1+ 45.Kxf1 Kxb5 46.Ke2 Bg4+ 47.Kd3 f3 48.gxf3 g2 49.Kd4 0-1
2026.08.05 FIDE World Uni Teams C
3510895 GM Koustav, Chatterjee (2484) Tsarsitalidis, Konstantinos (2275) 1-0
1.Nf3 d5 2.d4 Nf6 3.e3 e6 4.c4 c6 5.Nbd2 Nbd7 6.b3 Ne4 7.Nxe4 dxe4 8.Nd2 f5 9.Bb2 Nf6 10.Be2 Bd6 11.Qc2 O-O 12.O-O Bd7 13.a4 Qe7 14.a5 a6 15.Qc1 Be8 16.Ba3 g5 17.Bxd6 Qxd6 18.c5 Qe7 19.Nc4 Bg6 20.f3 Bh5 21.Ra2 exf3 22.gxf3 Nd5 23.Kh1 Kh8 24.Qe1 Rg8 25.Bd1 Raf8 26.Raf2 Qg7 27.b4 Rf6 28.Rg2 Rh6 29.Bb3 Nf6 30.Ne5 Nd7 31.Nd3 Bf7 32.Qg3 f4 33.Qf2 Qf6 34.exf4 gxf4 35.Rxg8+ Bxg8 36.Re1 Bf7 37.Re4 Rh4 38.Qe2 Nf8 39.Ne5 Bh5 40.Qf2 Rh3 41.Qg2 Rh4 42.Bc4 Bg6 43.Re1 Bf5 44.Qf2 Ng6 45.Nxg6+ hxg6 46.Bxe6 Rh3 47.d5 cxd5 48.Bxd5 Qc3 49.Bxb7 Qxb4 50.Be4 Bxe4 51.Rxe4 Qc3 52.Qd4+ Qxd4 53.Rxd4 Rxf3 54.Rc4 Rd3 55.c6 Rd8 56.c7 Rc8 57.h4 Kg7 58.Kg2 g5 59.hxg5 Kg6 60.Rc5 1-0
2026.08.04 FIDE World Uni Teams C
3510871 Arjun Gupta (1959) GM Koustav, Chatterjee (2484) 0-1
1.d4 Nf6 2.Nf3 e6 3.Bf4 Be7 4.Nbd2 Nh5 5.Bg3 c5 6.dxc5 Nxg3 7.hxg3 Bxc5 8.Ne4 Qe7 9.Qd3 f5 10.Neg5 h6 11.g4 O-O 12.gxf5 Rxf5 13.Ne4 Rd5 14.Qb3 Nc6 15.c3 Ne5 16.e3 b6 17.c4 Nxf3+ 18.gxf3 Bb4+ 19.Nc3 Rd6 20.Be2 Bb7 21.Rg1 Ba5 22.Qa3 Rc8 23.Kf1 Bxc3 24.Qxc3 e5 25.Qa3 Qf6 26.e4 Rf8 27.c5 Rd4 28.cxb6 axb6 29.Qe3 d5 30.Rc1 Qd6 31.exd5 Bxd5 32.Rg4 Qf6 33.Rc7 Rxg4 34.fxg4 Qh4 35.Ke1 Qh1+ 36.Kd2 Qh2 37.Kc3 e4 38.Qxb6 Rxf2 39.Kd4 Bf7 40.Bc4 Rd2+ 41.Kc5 Qf2+ 42.Kb5 Bxc4+ 43.Rxc4 Rxb2+ 0-1
2026.08.04 FIDE World Uni Teams C
3510879 GM Koustav, Chatterjee (2484) Arjun Gupta (1959) 1-0
1.Nf3 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 O-O 5.O-O d6 6.d4 Nc6 7.Nc3 a6 8.b3 e5 9.dxe5 dxe5 10.Bg5 Bf5 11.Qxd8 Rfxd8 12.e4 Bg4 13.Nd5 Nxe4 14.Bxd8 Rxd8 15.Rad1 Nd6 16.c5 Nf5 17.h3 Bxf3 18.Bxf3 Nfd4 19.Bg2 f5 20.Ne3 e4 21.Kh1 Re8 22.Rd2 Ne6 23.Rc1 Bd4 24.Bf1 Kg7 25.Bc4 Nxc5 26.Bd5 Nd3 27.Bxc6 bxc6 28.Rxc6 Rd8 29.Rxc7+ Kh6 30.Kg1 Rf8 31.Kf1 g5 32.Rdc2 Ne5 33.Re7 Ng6 34.Re8 Rf7 35.Rc7 Rf6 36.Ke2 Ne5 37.Ree7 1-0
2026.01.19 NY Marshall Winter GM B
2167172 GM Koustav, Chatterjee (2488) IM Ludwig, John (2344) 1/2-1/2
1.Nf3 d5 2.g3 Bg4 3.Bg2 c6 4.O-O Nd7 5.d4 e6 6.h3 Bxf3 7.exf3 g6 8.f4 Bg7 9.c3 Ne7 10.Nd2 O-O 11.Nf3 c5 12.dxc5 Nxc5 13.Be3 Ne4 14.Bd4 Bxd4 15.Nxd4 Nd6 16.Qe2 Qb6 17.Nf3 Rfc8 18.Kh2 Qb5 19.Qc2 a5 20.a4 Qe8 21.Rfe1 b5 22.axb5 Qxb5 23.Nd4 Qd7 24.Ra4 Nc6 25.Nxc6 Rxc6 26.Rea1 Qc7 27.h4 h5 28.Qe2 Rc5 29.R1a2 Rb8 30.Bf1 Rb3 31.Qc2 Qb6 32.Rd4 1/2-1/2
2026.01.19 NY Marshall Winter GM B
2167178 GM Schitco, Ivan (2490) GM Koustav, Chatterjee (2488) 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.h3 Bb7 9.d3 Na5 10.Nxe5 Nxb3 11.axb3 d5 12.exd5 Qxd5 13.Qf3 Bd6 14.Qxd5 Nxd5 15.Na3 c5 16.Bd2 Nc7 17.Bf4 Ne6 18.Bh2 Rfd8 19.Ng4 Bf8 20.Rac1 Nd4 21.Nb1 f6 22.Nd2 Kf7 23.f3 Rd7 24.Kf1 Rad8 25.Nf2 g6 26.Bf4 Ne6 27.Be3 f5 28.Nd1 Bd6 29.Nc3 1/2-1/2
2026.01.18 NY Marshall Winter GM B
2160389 GM Koustav, Chatterjee (2488) IM Hebbar, Eshaan (2233) 1/2-1/2
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5 7.O-O Nc6 8.d5 Ne7 9.b4 a5 10.Ba3 Nd7 11.bxa5 Rxa5 12.Bb4 Ra8 13.a4 Nc5 14.a5 Na6 15.Ba3 f5 16.Nd2 Rb8 17.Nb5 Bh6 18.Bd3 Bd7 19.Qe2 Nc8 20.Rfb1 Nc5 21.Bxc5 dxc5 22.Nb3 Bxb5 23.cxb5 fxe4 24.Bxe4 b6 25.Nd2 Bxd2 26.Qxd2 Nd6 27.Qe2 bxa5 28.Bf3 Qf6 29.Bg4 e4 30.Rxa5 Qd4 31.Rd1 Qc3 32.Qe1 Qxe1+ 33.Rxe1 Rf4 34.Be2 c4 35.g3 Rf6 36.Bf1 Kg7 37.Rc1 Rbf8 38.Ra2 Nxb5 39.Rxc4 R8f7 40.Bh3 Nd6 41.Rca4 Rf3 42.Rc2 e3 43.fxe3 Rxe3 44.Be6 Re7 45.Ra7 Ne8 46.Kg2 Re5 47.h4 h5 48.Kf2 Kh6 49.Kf3 Re1 50.Rc6 Ng7 51.Kf2 Re5 52.Raxc7 Rxc7 53.Rxc7 Nxe6 1/2-1/2
2026.01.18 NY Marshall Winter GM B
2160393 IM Fus, Jakub (2422) GM Koustav, Chatterjee (2488) 1/2-1/2
1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.d3 Bc5 5.O-O d6 6.c3 a5 7.Re1 O-O 8.Bg5 h6 9.Bh4 g5 10.Bg3 Ba7 11.Na3 g4 12.Nh4 Nh5 13.Nc2 Qg5 14.Ne3 Ne7 15.d4 Kh8 16.Rc1 Nxg3 17.hxg3 Bd7 18.Rc2 b5 19.Bf1 f6 20.a3 a4 21.Qd3 Rfe8 22.Rd2 Bb6 23.Rdd1 Rad8 24.Qb1 1/2-1/2
2026.01.17 NY Marshall Winter GM B
2160380 GM Koustav, Chatterjee (2488) FM Lin, Bryan Enming (2340) 1-0
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5 7.O-O Na6 8.Re1 Bg4 9.Be3 exd4 10.Nxd4 Bxe2 11.Qxe2 Re8 12.f3 c6 13.Rad1 Nd7 14.f4 Nac5 15.Qc2 Qa5 16.a3 Qa6 17.b4 Ne6 18.Nxe6 Rxe6 19.Qb3 Bxc3 20.Qxc3 Rxe4 21.Rxd6 Nb6 22.Bd4 Rxe1+ 23.Qxe1 Nxc4 24.Re6 Rf8 25.Re8 Qxa3 26.Bf6 Ne5 27.Rxf8+ Kxf8 28.Qxe5 Qc1+ 29.Kf2 Qd2+ 30.Kg3 Qd3+ 31.Kh4 Qd7 32.Qb8+ Qe8 33.Qxb7 h6 34.Qc7 g5+ 35.Kh5 a5 36.bxa5 Kg8 37.Qd8 Kh7 38.Qxe8 1-0
2026.01.17 NY Marshall Winter GM B
2160382 FM Kaplan, Avi Harrison (2372) GM Koustav, Chatterjee (2488) 1/2-1/2
1.d4 Nf6 2.c4 e6 3.Nc3 d5 4.cxd5 exd5 5.Bg5 Be6 6.e3 c6 7.Bd3 Nbd7 8.Nge2 h6 9.Bh4 g5 10.Bg3 Nh5 11.O-O Nxg3 12.Nxg3 Nf6 13.Re1 Bd6 14.Nf5 Bxf5 15.Bxf5 O-O 1/2-1/2
2026.01.16 NY Marshall Winter GM B
2160371 GM Koustav, Chatterjee (2488) GM Lenderman, A (2468) 1/2-1/2
1.Nf3 d5 2.e3 Nf6 3.c4 e6 4.Nc3 Bd6 5.b3 O-O 6.Bb2 c5 7.cxd5 exd5 8.Be2 Nc6 9.d4 cxd4 10.Nxd4 Re8 11.O-O Nxd4 12.Qxd4 Be5 13.Qd2 Be6 14.Rfd1 Rc8 15.Rac1 Qa5 16.h3 Ne4 17.Nxe4 Qxd2 18.Nf6+ Bxf6 19.Rxd2 Bxb2 20.Rxc8 Rxc8 21.Rxb2 Rc1+ 22.Kh2 Kf8 23.Rd2 1/2-1/2
2026.01.15 NY Marshall Winter GM B
2160370 FM Atwell, Rose (2290) GM Koustav, Chatterjee (2488) 1/2-1/2
1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.d3 Bc5 5.c3 O-O 6.O-O d6 7.a4 a5 8.h3 Bb6 9.Re1 h6 10.Nbd2 Ne7 11.Ba2 Ng6 12.Nc4 Re8 13.d4 Be6 14.Nxb6 cxb6 15.Bb1 Qc7 16.Be3 Rad8 17.d5 Bc8 18.Qb3 Nd7 19.Bd3 Nc5 20.Qc4 Qe7 21.b4 axb4 22.cxb4 Nxd3 23.Qxd3 Rf8 24.Nd2 f5 25.f3 Rf6 26.Rac1 Rdf8 27.Rc4 R6f7 28.Qc3 Bd7 29.Rc7 Qh4 30.Nc4 f4 31.Bf2 Qg5 32.h4 Nxh4 33.Bxh4 Qxh4 34.Nxd6 Re7 35.Nc4 Qg5 36.d6 Bh3 37.Re2 Re6 38.d7 Rg6 39.Qxe5 Qh4 40.Qd5+ Kh7 41.Qd2 Ra8 42.Ne5 Rg3 43.Nf7 Bxg2 44.Rxg2 Rh3 45.Rh2 Qg3+ 46.Qg2 Qe1+ 47.Qf1 Qg3+ 48.Qg2 Qe1+ 49.Qf1 Qg3+ 1/2-1/2
2026.01.14 NY Marshall Winter GM B
2160362 GM Koustav, Chatterjee (2488) IM De Silva, L M S T (2404) 1/2-1/2
1.d4 d5 2.c4 e6 3.Nc3 a6 4.cxd5 exd5 5.Qb3 c5 6.Qxd5 cxd4 7.Qxd8+ Kxd8 8.Nd5 Be6 9.e4 dxe3 10.Bxe3 Bxd5 11.O-O-O Ne7 12.Bc4 Kc7 13.Bxd5 Nxd5 14.Rxd5 Nc6 15.Bf4+ Kc8 16.Ne2 Be7 17.Nc3 b5 18.Re1 Ra7 19.Kb1 Rd8 20.Rc1 Kb7 21.Rh5 h6 22.Ne4 Raa8 23.Nc5+ Bxc5 24.Rhxc5 Rac8 25.h4 Rd7 26.h5 Ne7 27.Rxc8 Nxc8 28.Re1 Ne7 29.f3 Nd5 30.Bc1 Nc7 31.Re5 Ne6 32.Be3 Kc6 33.g4 Rd5 34.Re4 Kd7 35.a4 1/2-1/2
2026.01.05 Pan-Am Intercollegiate
2149632 GM Koustav, Chatterjee (2488) Zhang, Samuel (2115) 1/2-1/2
1.Nf3 Nf6 2.c4 e6 3.Nc3 d5 4.e3 Bd6 5.b3 O-O 6.Bb2 b6 7.cxd5 exd5 8.Rc1 a6 9.g3 Bb7 10.Bg2 Re8 11.O-O Nbd7 12.Re1 b5 13.d4 Ne4 14.Re2 f5 15.Ne1 Qg5 16.Nd3 Ndf6 17.Ne5 Qh6 18.f4 Re7 19.Qe1 Rae8 20.Rec2 g5 21.a4 b4 22.Nxe4 fxe4 23.fxg5 Qxg5 24.Rf2 Rg7 25.Bh3 Bc8 26.Bxc8 Rxc8 27.Qe2 Rf8 28.Rcf1 h5 29.Rf5 Qh6 30.R1f4 h4 31.g4 Rg5 32.Rxg5+ Qxg5 33.Qxa6 Nd7 34.Rxf8+ Nxf8 35.Qe2 c5 36.a5 cxd4 37.exd4 Ne6 38.a6 Nf4 39.Qb5 Bxe5 40.Qe8+ Kh7 41.Qd7+ Kh6 42.dxe5 Nh3+ 43.Kh1 Nf2+ 44.Kg2 Nxg4 1/2-1/2
2026.01.04 Pan-Am Intercollegiate
2149576 Guha, Rohit (2130) GM Koustav, Chatterjee (2488) 0-1
1.d4 Nf6 2.c4 e6 3.Nc3 d5 4.cxd5 exd5 5.Bg5 Bb4 6.e3 h6 7.Bh4 g5 8.Bg3 Ne4 9.Ne2 h5 10.h3 Nc6 11.a3 Bxc3+ 12.bxc3 h4 13.Bh2 Be6 14.f3 Nd6 15.Nc1 Qd7 16.Nb3 b6 17.Be2 Ne7 18.Nd2 O-O-O 19.Ba6+ Kb8 20.Kf2 f5 21.Rb1 Ka8 22.Be5 Rhg8 23.a4 Nc6 24.Bh2 g4 25.Bf4 Ne7 26.Nb3 Rb8 27.a5 Ng6 28.Bxd6 Qxd6 29.f4 Bd7 30.Bd3 Rbe8 31.Re1 gxh3 32.gxh3 Nxf4 33.exf4 Qxf4+ 0-1
2026.01.04 Pan-Am Intercollegiate
2149600 GM Koustav, Chatterjee (2488) FM Shen, Christopher (2338) 1/2-1/2
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 Na6 7.O-O e5 8.Re1 exd4 9.Nxd4 Re8 10.Bf1 Ng4 11.f3 Ne5 12.Be3 Nc5 13.Qd2 Be6 14.b3 Nc6 15.Rad1 Nxd4 16.Bxd4 Bxd4+ 17.Qxd4 Nd7 18.Nd5 a6 19.Qc3 Rc8 20.g3 Qg5 21.Rd2 Qe5 22.Qe3 Qg7 23.Nf4 Rcd8 24.Qf2 b6 25.Nd5 Rc8 26.b4 a5 27.a3 axb4 28.axb4 Bxd5 29.cxd5 Qc3 30.Rb2 Ne5 31.Re3 Qc1 32.Qd2 Qxd2 33.Rxd2 Ra8 34.Rc2 Ra1 35.Rxc7 Rb1 36.Ra3 Rxb4 37.Rc2 1/2-1/2
2026.01.03 Pan-Am Intercollegiate
2149524 Beh, Ryan M (1822) GM Koustav, Chatterjee (2488) 0-1
1.d4 Nf6 2.c4 e6 3.Nc3 d5 4.cxd5 exd5 5.Bg5 Be6 6.e3 Nbd7 7.Nf3 c6 8.Bd3 h6 9.Bh4 g5 10.Bg3 Nh5 11.Qc2 Nxg3 12.hxg3 Qe7 13.O-O-O O-O-O 14.Kb1 Kb8 15.Bf5 Bg7 16.g4 Nb6 17.Ne2 Bxf5 18.Qxf5 Nc4 19.Qd3 Qd7 20.Ng3 Qxg4 21.Qf5 Nxe3 22.fxe3 Qxg3 23.Qxf7 Rhg8 24.Ne5 Bxe5 25.dxe5 Qxe5 26.Rh3 h5 27.Rxh5 Qe4+ 0-1
2026.01.03 Pan-Am Intercollegiate
2149536 GM Koustav, Chatterjee (2488) GM Sonis, Francesco (2557) 1/2-1/2
1.d4 Nf6 2.c4 e6 3.g3 Bb4+ 4.Nd2 c5 5.a3 Bxd2+ 6.Qxd2 cxd4 7.Nf3 d5 8.Bg2 dxc4 9.Qxd4 Bd7 10.O-O Bc6 11.Qxc4 O-O 12.Qh4 Nbd7 13.b4 Rc8 14.Bb2 Bd5 15.Rfc1 Qb6 16.Qf4 a5 17.Bf1 axb4 18.Qxb4 Ne4 19.Qxb6 Nxb6 20.Ne5 Nd2 21.Rxc8 Rxc8 22.Rc1 Rxc1 23.Bxc1 Nxf1 24.Kxf1 f6 25.Ng4 Kf7 26.Ne3 Bb3 27.f4 Na4 28.Bd2 Nc5 29.Bb4 Ne4 30.Ng4 Bc4 31.Nf2 Nxf2 1/2-1/2
2026.01.02 Pan-Am Intercollegiate
2149508 GM Koustav, Chatterjee (2488) Shinn, Jungmin (1952) 1-0
1.Nf3 Nf6 2.c4 e6 3.Nc3 d5 4.e3 c6 5.b3 Bd6 6.Bb2 O-O 7.Be2 Nbd7 8.Qc2 Re8 9.O-O Ne5 10.Nxe5 Bxe5 11.d4 Bc7 12.Rad1 Ba5 13.Bd3 Qe7 14.Rfe1 Bc7 15.e4 dxc4 16.bxc4 e5 17.d5 Nh5 18.g3 Nf6 19.Rb1 h6 20.Kg2 Nh7 21.Qe2 Qd7 22.f3 Qh3+ 23.Kh1 c5 24.Nd1 Ng5 25.Ne3 b6 26.Rg1 Qh5 27.g4 Qg6 28.Rg3 Nh7 29.Nf5 Bd8 30.Qf2 Bxf5 31.gxf5 Qd6 32.Rbg1 Bf6 33.f4 Kf8 34.Rg4 Ke7 35.Rxg7 Nf8 36.fxe5 Bxe5 37.Qh4+ 1-0
2025.12.30 35th North American Open
2147005 GM Koustav, Chatterjee (2475) IM Katz, Alexander (2358) 1/2-1/2
1.Nf3 Nf6 2.g3 d5 3.Bg2 c5 4.O-O Nc6 5.d4 e6 6.c4 Be7 7.cxd5 exd5 8.Nc3 O-O 9.b3 Ne4 10.Bb2 Bf6 11.Nxe4 dxe4 12.Nd2 Bxd4 13.Bxd4 cxd4 14.Nxe4 b6 15.Ng5 Bb7 16.Rc1 Qxg5 17.Bxc6 Bxc6 18.Rxc6 Qe5 19.Qd3 Rfe8 20.Rc2 h5 21.h4 g6 22.Rfc1 Rad8 23.Qf3 Re7 24.Rc8 Rxc8 25.Rxc8+ Kg7 26.Qd3 Re6 27.b4 Qe4 28.Qd1 Kh7 29.b5 Qxe2 30.Qxd4 Re8 31.Rxe8 Qxe8 32.Qd5 Kg7 33.Qd4+ Kg8 34.a4 Qe7 35.Kg2 Qa3 36.Qd8+ Kg7 37.Qd4+ Kg8 38.Qe4 Qb3 39.Qe8+ Kg7 40.Qe5+ Kh7 41.Qc7 Qd5+ 42.Kh2 Qf3 43.Kg1 Qd1+ 44.Kh2 Qf3 45.Kg1 1/2-1/2
2025.12.29 35th North American Open
2146972 GM Koustav, Chatterjee (2475) GM Abdisalimov, Abdimalik (2561) 1/2-1/2
1.d4 Nf6 2.c4 e6 3.g3 c5 4.d5 exd5 5.cxd5 d6 6.Nc3 g6 7.Bg2 Bg7 8.Nf3 O-O 9.O-O Re8 10.Bf4 Na6 11.Re1 Bg4 12.h3 Bxf3 13.Bxf3 Nd7 14.Ne4 Ne5 15.Bg2 Rc8 16.b3 h6 17.Rc1 b5 18.a3 c4 19.b4 f5 20.Nc3 Nc7 21.Qd2 Kh7 22.Be3 Nd7 23.Bxa7 Ra8 24.Bd4 Bxd4 25.Qxd4 Rxa3 26.Ra1 Qa8 27.Rxa3 Qxa3 28.Rb1 Ra8 29.e4 Qa7 30.Qd2 Ne5 31.exf5 gxf5 1/2-1/2
2025.12.29 35th North American Open
2146988 IM Abdurakhmonov, Mukhammadali (2354) GM Koustav, Chatterjee (2475) 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 Nb8 1/2-1/2
2025.12.28 35th North American Open
2141380 GM Koustav, Chatterjee (2475) IM Lamaze, Simon (2466) 1-0
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5 7.O-O Bg4 8.dxe5 dxe5 9.Nxe5 Qxd1 10.Bxd1 Bxd1 11.Rxd1 Nxe4 12.Nxg6 Nxc3 13.Ne7+ Kh8 14.bxc3 Na6 15.Bg5 Bxc3 16.Rac1 Bg7 17.Nf5 f6 18.Be3 Rad8 19.g4 Kg8 20.Bd4 Rd7 21.Bc3 Rfd8 22.Rxd7 Rxd7 23.Re1 Nc5 24.Kg2 Nd3 25.Re4 Kf7 26.Nxg7 Kxg7 27.g5 Kg6 28.Bxf6 Kf5 29.Kf3 a6 30.a4 b6 31.h4 Nc5 32.Rf4+ Ke6 33.Bd4 Nxa4 34.h5 b5 35.g6 hxg6 36.hxg6 Rxd4 37.Rxd4 Kf6 38.cxb5 axb5 39.Rg4 Kg7 40.Kf4 1-0
2025.12.28 35th North American Open
2141393 GM Ghaem Maghami, E (2427) GM Koustav, Chatterjee (2475) 1/2-1/2
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Bxc6 dxc6 5.O-O Bd6 6.d4 exd4 7.Qxd4 f6 8.Be3 Ne7 9.Nbd2 Be6 10.Rfd1 Ng6 11.Nc4 Bxc4 12.Qxc4 Qe7 13.a4 O-O-O 1/2-1/2
2025.12.27 35th North American Open
2141361 GM Koustav, Chatterjee (2475) WIM Caglar, Sila (2280) 1-0
1.d4 d5 2.c4 e6 3.Nf3 h6 4.Nc3 Nf6 5.a3 c5 6.cxd5 exd5 7.Bf4 a6 8.e3 Nc6 9.Be2 Be6 10.O-O Rc8 11.dxc5 Bxc5 12.Rc1 Ba7 13.Ne5 O-O 14.Nxc6 Rxc6 15.Be5 Bb8 16.Bxb8 Qxb8 17.Qd4 Rfc8 18.Rcd1 b5 19.h3 Rc5 20.Bd3 a5 21.Ne2 Nd7 22.b4 axb4 23.axb4 R5c6 24.Nf4 Nf6 25.Ra1 Qb6 26.Ne2 Bd7 27.Ra5 Rd6 28.Rfa1 Ne8 29.Ra7 Qb8 30.Qf4 Be6 31.Nd4 g5 32.Qf3 Rd7 33.Bh7+ 1-0
2025.12.27 35th North American Open
2141371 IM Wang, Isaac (2370) GM Koustav, Chatterjee (2475) 0-1
1.d4 Nf6 2.c4 e6 3.Nc3 d5 4.Nf3 Bb4 5.cxd5 exd5 6.Bg5 Nbd7 7.e3 h6 8.Bxf6 Qxf6 9.a3 Bxc3+ 10.bxc3 O-O 11.Bd3 c5 12.O-O b6 13.e4 dxe4 14.Bxe4 Rb8 15.Re1 Bb7 16.Qa4 Rfd8 17.Rad1 cxd4 18.cxd4 Bxe4 19.Rxe4 Qd6 20.Rde1 Nf6 21.Re7 a5 22.h3 Rbc8 23.Rb7 Rc7 24.Rxc7 Qxc7 25.Qb5 g6 26.a4 Kg7 27.Rb1 Rd6 28.Qe5 Qc6 29.Qf4 Re6 30.Rb5 Nd5 31.Qd2 Rd6 32.Ne5 Qc3 33.Qd1 Nc7 34.Rb3 Rxd4 35.Rxc3 Rxd1+ 36.Kh2 Nd5 37.Rc6 Re1 38.Nf3 Re6 39.Rc4 Re2 40.Kg3 f5 41.Nd4 Rd2 42.h4 Rd3+ 43.Nf3 Rc3 44.Rd4 Nf6 45.Kf4 Kf7 46.Ke5 Ke7 47.Rd2 Rc4 48.Rd4 Nd7+ 49.Kf4 Rxd4+ 50.Nxd4 Kf6 51.h5 g5+ 52.Ke3 Nc5 53.Nc6 Nxa4 54.Kd4 Nc5 55.Kc4 Ne4 56.f3 Ng3 57.Kb5 Nxh5 58.Kxb6 a4 0-1
2025.12.26 35th North American Open
2141347 FM Yang, Jingyun (ryan) (2319) GM Koustav, Chatterjee (2475) 1/2-1/2
1.e4 e5 2.Nc3 Nf6 3.f4 d5 4.fxe5 Nxe4 5.Qf3 f5 6.d3 Nxc3 7.bxc3 d4 8.Qg3 dxc3 9.Be2 Be6 10.Bf3 Nc6 11.Bxc6+ bxc6 12.Ne2 Qd7 13.O-O h6 14.Qg6+ Qf7 15.Qxf7+ Kxf7 16.Be3 g6 17.Bd4 g5 18.Rab1 Be7 1/2-1/2
2025.11.30 US Chess Masters 2025
2109773 GM Zhou Jianchao (2591) GM Koustav, Chatterjee (2475) 1/2-1/2
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qc2 O-O 5.e4 d5 6.e5 Ne4 7.Bd3 c5 8.a3 Bxc3+ 9.bxc3 cxd4 10.cxd4 Qa5+ 11.Kf1 Bd7 12.Ne2 Ba4 13.Qb2 Nc6 14.Be3 f6 15.Bxe4 dxe4 16.exf6 Rxf6 17.Nc3 Qa6 18.Nxe4 Qxc4+ 19.Kg1 Rg6 20.Rc1 Qd5 21.Ng3 Ne7 22.Rc5 Qd7 23.h4 Nd5 24.Rh3 Rf8 25.h5 Rg4 26.Qe2 Nxe3 27.Qxe3 Bc6 28.h6 1/2-1/2
2025.11.30 US Chess Masters 2025
2109812 GM Koustav, Chatterjee (2475) GM Erenburg, S (2466) 1/2-1/2
1.Nf3 d5 2.e3 Nf6 3.c4 c6 4.Nc3 e6 5.b3 Bd6 6.Bb2 O-O 7.Be2 Re8 8.Qc2 e5 9.cxd5 cxd5 10.Nb5 Nc6 11.Nxd6 Qxd6 12.d4 e4 13.Ne5 Be6 14.Nxc6 Rec8 15.Qc5 Qxc6 16.Qxc6 Rxc6 17.Kd2 Rac8 18.Rhc1 Rxc1 19.Bxc1 Kf8 20.a4 Ke8 21.Ba3 Bg4 22.Bf1 Be6 23.h3 Nd7 24.Be2 Nb8 25.g4 Nc6 26.h4 Na5 27.Rb1 Bd7 28.g5 Nc6 29.h5 Na5 30.Bc5 Nc6 31.b4 Nd8 32.b5 b6 33.Bd6 Be6 34.g6 fxg6 35.hxg6 hxg6 36.Rg1 Bf5 37.Be5 Nb7 38.Rh1 Na5 39.Rh8+ Kd7 40.Rxc8 Kxc8 41.Bxg7 Be6 42.Bh6 Nc4+ 43.Kc3 Nd6 44.Bf4 Kd7 45.Kb4 Nb7 46.Kc3 Nd6 47.Bd1 Bf5 48.Bb3 Be6 49.Kd2 Nc4+ 50.Kc3 Nd6 51.Kd2 Nc4+ 52.Kc3 1/2-1/2
2025.11.29 US Chess Masters 2025
2109706 GM Koustav, Chatterjee (2475) GM Hong, Andrew (2568) 1/2-1/2
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Bd3 Nc6 7.d5 Nb4 8.Be2 e6 9.Be3 exd5 10.exd5 Re8 11.a3 Rxe3 12.fxe3 Ng4 13.axb4 Nxe3 14.Qd3 Qe7 15.Ne4 Nxg2+ 16.Kf2 Nf4 17.Qe3 Bh6 18.Qd4 Nxe2 19.Nf6+ Kg7 20.Nh5+ Kg8 21.Nf6+ Kg7 22.Nh5+ Kg8 23.Nf6+ 1/2-1/2
2025.11.29 US Chess Masters 2025
2109738 GM Rodrigue-Lemieux, Shawn (2521) GM Koustav, Chatterjee (2475) 1-0
1.c4 e6 2.g3 d5 3.Bg2 Nf6 4.Nf3 Be7 5.O-O O-O 6.b3 c5 7.Bb2 d4 8.e3 Nc6 9.exd4 cxd4 10.Re1 Bd6 11.Nxd4 Nxd4 12.Bxd4 Bxg3 13.hxg3 Qxd4 14.Nc3 Rd8 15.Nb5 Qxd2 16.Qxd2 Rxd2 17.Rad1 Rd7 18.c5 Rxd1 19.Rxd1 Nd5 20.Nc7 Rb8 21.Nxd5 exd5 22.Bxd5 Kf8 23.Rd4 Bd7 24.Bxf7 Bc6 25.Bc4 g5 26.f4 Re8 27.Kf2 gxf4 28.Rxf4+ Kg7 29.Rf7+ Kg6 30.Rc7 Rf8+ 31.Ke2 a5 32.Bd3+ Kf6 33.Rxh7 Ke5 34.Rh4 Rg8 35.g4 Kf4 36.Bf5 Rd8 37.Rh3 Bb5+ 38.Ke1 Bc6 39.Ke2 Bb5+ 40.Ke1 Bc6 41.Rh2 Re8+ 42.Re2 Rd8 43.Rd2 Re8+ 44.Kd1 Re5 45.Rd4+ Ke3 46.Rd3+ Kf4 47.Rc3 Bf3+ 48.Kc1 a4 49.Kb2 Bxg4 50.Bxg4 Kxg4 51.b4 1-0
2025.11.28 US Chess Masters 2025
2109649 GM Brodsky, David (2515) GM Koustav, Chatterjee (2475) 0-1
1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.d3 Bc5 5.c3 a6 6.O-O Ba7 7.Re1 d6 8.Nbd2 O-O 9.Nf1 Na5 10.Bb3 Nxb3 11.axb3 h6 12.Ng3 Re8 13.h3 Bd7 14.Be3 Bxe3 15.Rxe3 Nh7 16.d4 Ng5 17.Nxg5 hxg5 18.b4 g6 19.Nf1 Qe7 20.d5 Kg7 21.c4 Rh8 22.Rc3 Rh4 23.f3 Rah8 24.c5 Qf6 25.Qd2 Bxh3 26.gxh3 Rxh3 27.Kg2 R8h4 28.cxd6 cxd6 29.Rd1 Rh1 30.Qf2 g4 31.f4 exf4 32.Qd4 Qxd4 33.Rxd4 Kf6 34.Rc7 g3 35.Rd1 g5 36.e5+ dxe5 37.d6 R4h2+ 38.Nxh2 Rxd1 39.Ng4+ Ke6 40.Re7+ Kxd6 41.Rxe5 Rd2+ 42.Kh3 Rh2+ 43.Nxh2 Kxe5 44.Nf3+ Kf5 45.Kg2 g4 46.Nd2 Ke5 47.Nc4+ Kd5 48.Na5 b6 49.Nb7 f5 50.b3 Ke5 51.Nd8 Kd4 52.Ne6+ Ke3 0-1
2025.11.28 US Chess Masters 2025
2109676 GM Koustav, Chatterjee (2475) GM Xiong, Jeffery (2649) 1/2-1/2
1.d4 d5 2.c4 e6 3.Nf3 c6 4.Nbd2 Nf6 5.g3 Be7 6.Bg2 O-O 7.O-O b6 8.Qc2 Bb7 9.b3 Na6 10.a3 c5 11.Bb2 Rc8 12.dxc5 Nxc5 13.Ng5 Ncd7 14.Rac1 h6 15.Nh3 Bd6 16.Qb1 Qe7 17.Qa1 e5 18.cxd5 Bxd5 19.Bxd5 Nxd5 20.e4 N5f6 21.Kg2 Nc5 22.Qb1 Rfd8 23.Rfd1 b5 24.f3 Bc7 25.Nf2 Bb6 26.Ba1 Qe6 27.b4 Na4 28.Rxc8 Rxc8 29.Qb3 Qe7 30.Nf1 a6 31.Ne3 Qa7 32.Nfg4 1/2-1/2
2025.11.27 US Chess Masters 2025
2109609 Mcconnell, Sullivan (2258) GM Koustav, Chatterjee (2475) 0-1
1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.Nf3 Nb6 5.Be2 g6 6.O-O Bg7 7.exd6 cxd6 8.c4 O-O 9.Nc3 Bg4 10.Be3 Nc6 11.b3 d5 12.c5 Nc8 13.h3 Bxf3 14.Bxf3 e6 15.Qd2 N8e7 16.Rad1 Nf5 17.Ne2 b6 18.b4 bxc5 19.bxc5 Nh4 20.Bg4 h5 21.Bg5 Bf6 22.Bxh4 Bxh4 23.Bf3 Bg5 24.Qd3 Rb8 25.Rb1 Qc7 26.a4 Bf6 27.Rb5 a6 28.Rbb1 Rb4 29.Rxb4 Nxb4 30.Qd2 Nc6 31.Qd3 Nb4 32.Qd2 Nc6 33.Qd3 Rb8 34.Rd1 a5 35.Nc3 Nxd4 36.Bxd5 Bg7 37.c6 Nxc6 38.Nb5 Qb6 39.Bxc6 Qxc6 40.Qd2 Ra8 41.Qf4 Rc8 42.Nd6 Qc7 43.Qf3 Rf8 44.g3 Qc2 45.Ne4 Qxa4 46.Kg2 Qb5 47.g4 a4 48.Rd3 Bb2 49.Nd6 Qc5 50.Ne4 Qe5 51.Rd7 a3 52.Ra7 hxg4 53.hxg4 Kg7 54.Nd2 Qd4 55.Qe3 Qd5+ 0-1
2025.11.26 US Chess Masters 2025
2109585 GM Koustav, Chatterjee (2475) Crump, Alexander J (2119) 1-0
1.Nf3 d5 2.e3 Nf6 3.c4 c6 4.Nc3 e6 5.b3 Nbd7 6.Bb2 Bd6 7.Qc2 O-O 8.Be2 Qe7 9.O-O Rd8 10.Rac1 a6 11.d4 dxc4 12.bxc4 c5 13.Bd3 cxd4 14.exd4 b6 15.Ne4 Bf4 16.Rce1 Bb7 17.d5 Nxe4 18.Rxe4 Bh6 19.Rh4 Nf8 20.Re1 b5 21.Rxh6 gxh6 22.Qd2 f6 23.Nd4 Qg7 24.Nxe6 Nxe6 25.Rxe6 Rf8 26.Re3 Kh8 27.Rg3 Qe7 28.Qxh6 Rf7 29.h3 Raf8 30.Re3 Qd8 31.Re6 1-0
2025.10.26 Texas Collegiate Finals
2083132 GM Koustav, Chatterjee (2488) IM Bilych, Oleksii (2446) 1-0
1.d4 d5 2.c4 e6 3.Nf3 Nf6 4.g3 Bb4+ 5.Nbd2 dxc4 6.Bg2 a5 7.a3 Bxd2+ 8.Bxd2 b5 9.b3 Bb7 10.bxc4 bxc4 11.Qa4+ Nbd7 12.Qxc4 O-O 13.O-O Bd5 14.Qc2 c5 15.dxc5 Rc8 16.Qa4 Nxc5 17.Qf4 Nb3 18.Rad1 Qe7 19.Qa4 Qb7 20.Rb1 Ne4 21.Rfd1 Qa6 22.Be1 Qxe2 23.Rxd5 Nec5 24.Rxc5 Nxc5 25.Qb5 Qa2 26.Ne5 Qxa3 27.Bxa5 Qa2 28.Nc6 Kh8 29.Rf1 Nb3 30.Bb4 Rfe8 31.h4 Qc2 32.h5 h6 33.Re1 Qf5 34.Qxf5 exf5 35.Rxe8+ Rxe8 36.Bd5 Nc1 37.Bxf7 Re2 38.Kf1 f4 39.gxf4 Rb2 40.Bc4 Na2 41.Ba5 Rc2 42.Ne5 Nc3 43.Nf7+ Kg8 44.Nxh6+ Kh8 45.Nf7+ Kg8 46.Ng5+ Kh8 47.Bd3 Rc1+ 48.Kg2 Nd5 49.Kf3 Ra1 50.Bd2 Ra3 51.Ke2 Ra2 52.Nf7+ Kg8 53.Bc4 Nxf4+ 54.Ke3 Ng2+ 55.Kd3 Ra3+ 56.Ke4 Nh4 57.Bg5 Rh3 58.Kf4 Ng2+ 59.Kg4 Rc3 60.Nd6+ Kh8 61.Bd5 Ne1 62.Nf7+ Kg8 63.Ne5+ Kh8 64.Bd2 Rc5 65.Ng6+ Kh7 66.Be4 Nc2 67.f4 Kh6 68.Ne5 Rc7 69.Bg6 1-0
2025.10.25 Texas Collegiate Finals
2083108 IM Ozenir, Ekin Baris (2426) GM Koustav, Chatterjee (2488) 1-0
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.cxd5 exd5 5.Bg5 Be6 6.e3 c6 7.Bd3 Nbd7 8.h3 Be7 9.Nf3 Nh5 10.Bxe7 Qxe7 11.Qc2 g6 12.O-O O-O 13.b4 Rac8 14.Na4 b6 15.Qb2 Ng7 16.Rac1 Nf5 17.b5 c5 18.dxc5 bxc5 19.Rfd1 Nd6 20.Qa3 f6 21.Bf1 Nb6 22.Nd2 Rc7 23.Nb1 Ndc4 24.Bxc4 Nxc4 25.Qd3 Rd8 26.Rxc4 Bf5 27.e4 Rcd7 28.Rcc1 Bxe4 29.Qa3 c4 30.Qxe7 Rxe7 31.Nbc3 Bd3 32.Nc5 d4 33.Nxd3 dxc3 34.Nb4 Rd2 35.Nd5 Ree2 36.Nxc3 Rxf2 37.Rxd2 Rxd2 38.a4 Rb2 39.Nd5 1-0
2025.10.25 Texas Collegiate Finals
2083112 GM Koustav, Chatterjee (2488) GM Rodrigue-Lemieux, Shawn (2524) 0-1
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.a3 Bxc3+ 6.bxc3 d6 7.f3 c5 8.Bd3 Nc6 9.Ne2 b6 10.e4 Ne8 11.O-O Ba6 12.f4 f5 13.Ng3 Ne7 14.d5 exd5 15.exd5 g6 16.Re1 Ng7 17.Qf3 Kh8 18.a4 Ng8 19.Be3 Nf6 20.Nf1 Qd7 21.Bf2 Rae8 22.Nd2 Rxe1+ 23.Bxe1 Re8 24.Bh4 Ngh5 25.h3 Kg7 26.Kh1 Bc8 27.Bc2 Qe7 28.Re1 Qxe1+ 29.Bxe1 Rxe1+ 30.Kh2 Ng4+ 31.hxg4 fxg4 32.Qf1 Rxf1 33.Nxf1 Nxf4 34.Ng3 h5 35.Bd1 Bf5 0-1
2025.10.13 Texas Norm Super Swiss
2074380 GM Koustav, Chatterjee (2488) FM Tanenbaum, Zachary (2319) 1/2-1/2
1.Nf3 d5 2.g3 c6 3.Bg2 Bg4 4.O-O Nd7 5.d4 e6 6.h3 Bh5 7.c4 Ngf6 8.Nc3 dxc4 9.a4 Nd5 10.Nd2 Bb4 11.g4 Bg6 12.Nxc4 O-O 13.Qb3 a5 14.e4 N5b6 15.Nxb6 Nxb6 16.Be3 Qe7 17.f4 f6 18.Na2 Bf7 19.Nxb4 axb4 20.Bd2 c5 21.dxc5 Qxc5+ 22.Kh2 Rfc8 23.Rfc1 e5 24.Rxc5 Bxb3 25.Rxc8+ Rxc8 26.fxe5 fxe5 27.a5 Rc2 28.Bxb4 Nc4 29.Bc3 Ne3 30.Rg1 Bc4 31.Kg3 Bd3 32.Bxe5 Nxg2 33.Rxg2 Rxg2+ 34.Kxg2 Bxe4+ 35.Kf2 g5 36.Bf6 h6 37.h4 gxh4 38.Bxh4 Kf7 39.Ke3 Bc6 40.b4 Bd7 41.Kf4 Kg6 42.Be1 Kf7 43.Bc3 1/2-1/2
2025.10.12 Texas Norm Super Swiss
2074370 GM Budisavljevic, Luka (2517) GM Koustav, Chatterjee (2488) 1-0
1.d4 Nf6 2.c4 e6 3.Nc3 d5 4.cxd5 exd5 5.Bg5 Be7 6.e3 h6 7.Bh4 Bg4 8.Nf3 Nbd7 9.Bd3 O-O 10.O-O c6 11.Qc2 Nh5 12.Bxe7 Qxe7 13.Nd2 Be6 14.Rac1 Rac8 15.Na4 Nhf6 16.b4 b6 17.Qb2 Rfe8 18.Rfe1 Qd6 19.h3 Red8 20.Nc3 Nf8 21.a4 Bd7 22.Ne2 Ne6 23.Ng3 Qf8 24.Bb1 c5 25.bxc5 bxc5 26.dxc5 Bxa4 27.Qa3 Bb5 28.Qxa7 Rxc5 29.Rxc5 Qxc5 30.Qxc5 Nxc5 31.Nf3 Nfe4 32.Nf5 Nc3 33.N3d4 Bd7 34.Rc1 Nxb1 35.Rxc5 Bxf5 36.Nxf5 Kf8 37.Nd4 Nd2 38.Rc7 Ne4 39.Nc6 Re8 40.g4 g6 41.Kg2 Nf6 42.Kf3 Ne4 43.Kg2 Nf6 44.Ra7 Re6 45.Nd4 Rb6 46.f3 Ne8 47.Ra5 Nf6 48.h4 Rd6 49.Kg3 Rd7 50.Ra8+ Kg7 51.Ra6 Ne8 52.h5 Re7 53.Kf2 Nf6 54.Ke2 Rd7 55.hxg6 fxg6 56.Kd3 Kf7 57.Nc6 Kg7 58.Kd4 Rb7 59.Nd8 Re7 60.Nc6 Rb7 61.Ke5 Rf7 62.Nd8 Re7+ 63.Kd4 Rd7 64.Ne6+ Kf7 65.Nf4 Rb7 66.Nxd5 Nxd5 67.Kxd5 Rb3 68.Ke4 Rb4+ 69.Ke5 Rb5+ 70.Kf4 Rb4+ 71.e4 Rb3 72.Ra7+ Kf6 73.e5+ Ke6 74.Ra6+ Kf7 75.Ra4 Ke6 76.Ke4 Rb1 77.Ra6+ Kf7 78.Rf6+ Kg7 79.Rd6 Kf7 80.f4 Rg1 81.Rf6+ Kg7 82.Kf3 Re1 83.Rd6 g5 84.Rd7+ Kg8 85.Rd4 gxf4 86.Kxf4 Rf1+ 87.Ke4 Kf7 88.Rd7+ Kg6 89.Ra7 Rb1 90.Ra4 Kf7 91.Kd5 Rd1+ 92.Rd4 Re1 93.Rb4 Rd1+ 94.Ke4 Rc1 95.Kf5 Rf1+ 96.Rf4 Re1 97.Rf2 Re3 98.Rh2 Kg7 99.e6 Rf3+ 100.Ke4 Ra3 101.Re2 Kf6 102.Kf4 Ra4+ 103.Kg3 Ke7 104.Re5 Rb4 105.Kh4 Rb6 106.Kh5 Rb4 107.Re1 Rd4 108.Rg1 Kxe6 109.Kxh6 Kf7 110.Kh7 Rf4 111.Rg2 Kf8 112.g5 Rh4+ 113.Kg6 Rd4 114.Rb2 Rd6+ 115.Kh7 Rd7+ 116.Kh8 1-0
2025.10.12 Texas Norm Super Swiss
1930188 GM Koustav, Chatterjee (2488) FM Amburgy, Ryan (2309) 1-0
1.d4 Nf6 2.c4 e6 3.Nf3 d5 4.g3 dxc4 5.Bg2 a6 6.Ne5 Bb4+ 7.Nc3 Nd5 8.Bd2 Nb6 9.Ne4 Be7 10.Ba5 N8d7 11.Qc2 Nxe5 12.dxe5 Bd7 13.Rd1 Qc8 14.Rd4 O-O 15.h4 Ba4 16.b3 cxb3 17.axb3 Bc6 18.Ng5 g6 19.Bxc6 bxc6 20.Rg4 Qd7 21.Bc3 Qd5 22.f3 f5 23.exf6 Bxf6 24.Bxf6 Rxf6 25.Ne4 Rf5 26.h5 Qd4 27.hxg6 Qa1+ 28.Qd1 Qxd1+ 29.Kxd1 h5 30.Rxh5 Nd5 31.Rh7 Ne3+ 32.Ke1 Rb8 33.Rg5 Nd5 34.Rxf5 exf5 35.Ng5 Rxb3 36.Nf7 Kf8 37.Nh6 Ne7 38.Rf7+ Ke8 39.g7 Rb1+ 40.Kf2 Rh1 41.Rxe7+ Kxe7 42.g8=Q Rxh6 43.Qg7+ 1-0
2025.10.11 Texas Norm Super Swiss
1930167 GM Koustav, Chatterjee (2488) IM Putnam, Liam (2480) 1/2-1/2
1.Nf3 Nf6 2.g3 g6 3.Bg2 Bg7 4.O-O O-O 5.c4 d6 6.d4 Bf5 7.Qb3 Qc8 8.Nc3 Nc6 9.Rd1 a5 10.Bf4 Re8 11.Rac1 e5 12.dxe5 dxe5 13.Bg5 Ne4 14.Nd5 Nxg5 15.Nxg5 Nd4 16.Qe3 Qd8 17.c5 Bh6 18.h4 c6 19.Nb6 Rb8 20.Qd2 Bg4 21.f3 Be6 22.e3 Nf5 23.Qf2 Qe7 24.f4 exf4 25.gxf4 Rbd8 26.e4 Ng7 27.e5 Rxd1+ 28.Rxd1 Rd8 29.Rd6 Bxg5 30.hxg5 Nf5 31.Qd2 Rf8 32.Qxa5 h6 33.Qd2 hxg5 34.fxg5 Nxd6 35.exd6 Qd8 36.b4 f6 37.b5 fxg5 38.bxc6 bxc6 39.Qd4 g4 40.Qe5 Bxa2 41.Bxc6 Qh4 42.Qe2 Bf7 1/2-1/2
2025.10.11 Texas Norm Super Swiss
1930180 FM Jiang, Andrew (2297) GM Koustav, Chatterjee (2488) 0-1
1.Nf3 d5 2.b3 Nf6 3.Bb2 Bf5 4.g3 e6 5.Bg2 h6 6.O-O Be7 7.d3 O-O 8.Nbd2 a5 9.c4 Nbd7 10.Qc2 c6 11.Ne5 Nxe5 12.Bxe5 Bh7 13.Qb2 Re8 14.Nf3 Bf8 15.a3 Nd7 16.Bc3 Nc5 17.Nd2 b5 18.cxb5 cxb5 19.Rfc1 Qd7 20.Bd4 Rac8 21.Rc2 e5 22.Bxe5 f6 23.Bd4 Rxe2 24.Bxc5 Bxc5 25.Bf3 Bxf2+ 26.Kf1 Rce8 27.Bxe2 Qh3+ 28.Kxf2 Qxh2+ 29.Kf1 Rxe2 30.Rc8+ Kf7 31.Rc7+ Kg6 0-1
2025.10.10 Texas Norm Super Swiss
1930137 GM Koustav, Chatterjee (2488) GM Avila Pavas, Santiago (2490) 0-1
1.Nf3 Nf6 2.c4 e6 3.g3 d5 4.Bg2 dxc4 5.Qa4+ Bd7 6.Qxc4 c5 7.Ne5 Qc8 8.Nc3 Nc6 9.Nxd7 Qxd7 10.O-O Rc8 11.d3 Be7 12.a4 O-O 13.a5 Rfd8 14.a6 b6 15.Nb5 Nd5 16.Bd2 Ndb4 17.Qb3 Bf6 18.Rfd1 Nd5 19.Bc3 Ncb4 20.Qa4 Nc6 21.Bxf6 gxf6 22.d4 c4 23.Nc3 Nxc3 24.bxc3 Na5 25.Qxd7 Rxd7 26.Ra4 Rdc7 27.Rda1 Kf8 28.g4 Ke7 29.Rb4 Kd6 30.Rb5 Rg8 31.h3 Rg5 32.Rb4 Nb3 33.Rxb6+ axb6 34.a7 Rg8 35.a8=Q Rxa8 36.Rxa8 e5 37.dxe5+ fxe5 38.Rd8+ Rd7 39.Rb8 Kc7 40.Rb7+ Kd8 41.Rxd7+ Kxd7 42.Bd5 Nd2 43.Bxf7 b5 44.f3 b4 45.Bxc4 Nxc4 46.cxb4 Kc6 47.g5 Kb5 48.h4 Kxb4 49.h5 Nd6 50.Kg2 Kc5 51.Kg3 Kd5 52.g6 h6 53.Kg4 Ke6 54.e4 Ne8 55.Kg3 Nf6 56.Kh4 Ke7 57.f4 exf4 58.e5 Ne8 0-1
2025.10.10 Texas Norm Super Swiss
1930153 FM Colville, Julian (2294) GM Koustav, Chatterjee (2488) 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.a4 Rb8 9.axb5 axb5 10.c3 d6 11.d4 exd4 12.cxd4 d5 13.e5 Ne4 14.Nc3 Nxc3 15.bxc3 Bf5 16.Qe2 Qd7 17.Be3 h6 18.Nd2 Nd8 19.Ra7 Rb7 20.Rxb7 Nxb7 21.Ra1 c6 22.h3 Bg6 23.f4 c5 24.g4 c4 25.f5 cxb3 26.fxg6 fxg6 27.Nxb3 Qc6 28.Qd3 Nd8 29.Ra7 Rf7 30.Ra5 Ne6 31.Rxb5 Rf3 32.Qe2 Rxh3 33.Rb8+ Kh7 34.Bd2 Rxc3 35.Qf1 Rxb3 36.Rxb3 Nxd4 37.Rd3 Ne6 38.Bxh6 gxh6 39.Qf7+ Kh8 40.Qxe7 Qc1+ 41.Kf2 Qc2+ 42.Ke1 Qc1+ 43.Kf2 1/2-1/2
2025.10.09 Texas Norm Super Swiss
1930128 IM Atanasov, Anthony (2435) GM Koustav, Chatterjee (2488) 0-1
1.d4 Nf6 2.Nf3 d5 3.e3 c5 4.Nbd2 Nc6 5.Bb5 e6 6.O-O Bd6 7.b3 O-O 8.Bb2 a6 9.Bd3 Nb4 10.Be2 b6 11.a3 Nc6 12.Bd3 Bb7 13.Ne5 b5 14.Nxc6 Bxc6 15.dxc5 Bxc5 16.Nf3 Qe7 17.Qe2 Rfd8 18.Ne5 Bb7 19.Rfd1 Bd6 20.f4 Ne4 21.a4 f6 22.Ng4 b4 23.Bxe4 dxe4 24.Rd2 Bc5 25.Rad1 Bd5 26.Bd4 Rdc8 27.h3 a5 28.Kh2 Rc6 29.Ba1 Rac8 30.Rxd5 exd5 31.Rxd5 Qe6 32.Qd1 Rd6 33.Rxd6 Bxd6 34.Qe2 Be7 35.Qb5 Bc5 36.Qe2 Bb6 37.h4 h5 38.Nf2 Qd5 39.Nh1 Rc6 40.Ng3 g6 41.Qa6 Qe6 42.Qa8+ Qc8 43.Qxc8+ Rxc8 44.Nxe4 Bxe3 45.Nxf6+ Kf7 46.Kg3 Rxc2 47.Kf3 Bd2 48.Be5 Bc3 49.Nd7 Ke6 50.Nf8+ Kf5 51.Bd6 Bg7 52.Nd7 Rd2 0-1
2025.10.08 Texas Norm Super Swiss
1930117 GM Koustav, Chatterjee (2488) FM Lee, Megan (2183) 1-0
1.Nf3 d5 2.e3 Nf6 3.c4 e6 4.Nc3 Be7 5.b3 O-O 6.Bb2 c5 7.cxd5 exd5 8.d4 Nc6 9.Be2 cxd4 10.Nxd4 Qb6 11.Nxc6 bxc6 12.O-O Bb7 13.Rc1 Rac8 14.Na4 Qa5 15.Bd3 c5 16.Bc3 Qd8 17.Bxf6 Bxf6 18.Nxc5 Ba8 19.b4 Re8 20.Qg4 Rc7 21.Bb5 Ree7 22.Rfd1 g6 23.e4 d4 24.Bd3 h5 25.Qg3 Rc8 26.f4 Qb6 27.e5 Bg7 28.a3 a5 29.Qg5 Rec7 30.e6 axb4 31.axb4 1-0
2025.04.06 College Final Four 2025
129182 GM Cardoso Cardoso, Jose Gabriel (2505) GM Koustav, Chatterjee (2493) 1-0
1.d4 Nf6 2.c4 e6 3.Nf3 d5 4.Nc3 Bb4 5.cxd5 exd5 6.Bf4 Ne4 7.Rc1 Nc6 8.Nd2 g5 9.Be3 f5 10.Ndxe4 fxe4 11.a3 Bxc3+ 12.Rxc3 Rg8 13.g3 Bf5 14.h4 h6 15.b4 a6 16.Rc5 Kf7 17.Qb3 Ne7 18.hxg5 hxg5 19.Rh5 Kf6 20.Qc3 c6 21.Qc1 Rh8 22.Bxg5+ Ke6 23.Rh4 Qg8 24.Qf4 Ng6 25.Qc7 Qc8 26.Qg7 Kd6 27.Bf4+ Ke6 28.Rxh8 Nxh8 29.g4 Bg6 30.Bh3 1-0
2025.01.05 Pan-Am Intercollegiate
231616 GM Tiglon, Bryce (2530) GM Koustav, Chatterjee (2510) 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.a4 Bb7 9.d3 d6 10.Bd2 Qd7 11.h3 Nd8 12.axb5 axb5 13.Rxa8 Bxa8 14.Nc3 Ne6 15.Bxe6 fxe6 16.b4 Bb7 17.Qa1 Ra8 18.Qb2 h6 19.Ra1 Rxa1+ 20.Qxa1 c6 21.Qa7 Qc8 22.g4 d5 23.Nxe5 Bxb4 24.Nxb5 Bxd2 25.Nd6 Qc7 26.Qxb7 Qxd6 27.Qf7+ Kh7 28.Qg6+ Kg8 29.Qf7+ Kh7 30.Qg6+ Kg8 31.Qf7+ Kh7 32.Qg6+ Kg8 33.Qf7+ Kh7 34.Qg6+ Kg8 1/2-1/2
2025.01.04 Pan-Am Intercollegiate
231571 IM Nakada, Akira (2420) GM Koustav, Chatterjee (2510) 1/2-1/2
1.Nf3 d5 2.c4 e6 3.g3 Nf6 4.Bg2 d4 5.O-O c5 6.e3 Nc6 7.exd4 cxd4 8.d3 Bd6 9.Bg5 h6 10.Bxf6 Qxf6 11.Nbd2 Qd8 12.a3 a5 13.Rc1 O-O 14.c5 Be7 15.Re1 a4 16.Rc4 Bd7 17.Ne4 b5 18.Rc1 Qc7 19.Qe2 Rac8 20.Ned2 Rfe8 21.b3 axb3 22.Nxb3 Bf6 23.Nfd2 e5 24.Ne4 Be7 25.g4 Be6 26.Nbd2 Qd7 27.h3 h5 28.g5 g6 29.Qf3 Bf5 30.Qg3 Qe6 31.Nf3 Qb3 32.Nh4 Bxe4 33.Bxe4 Qxa3 34.Qf3 Bxg5 35.Nxg6 fxg6 36.Qg3 Kg7 37.Qxg5 Re6 38.Bf5 Rce8 39.Bxe6 Rxe6 40.Qg3 Rf6 41.Rc2 h4 42.Qxh4 Qxd3 43.Rce2 Rf4 44.Qg3 Qf5 45.Qg2 Rf3 46.Qg4 Rxh3 47.Qxf5 gxf5 48.Rxe5 Nxe5 49.Rxe5 Rc3 50.Rd5 Rc4 51.c6 b4 52.Kf1 Rxc6 53.Rb5 d3 54.Ke1 Rc4 55.Rxf5 Rd4 56.Kd2 Kg6 57.Rf8 Kg5 58.Rf7 Kg4 59.Rf8 Kh3 60.Rf3+ 1/2-1/2
2025.01.03 Pan-Am Intercollegiate
231536 GM Dudin, Gleb (2506) GM Koustav, Chatterjee (2510) 1-0
1.d4 Nf6 2.c4 e6 3.Nf3 d5 4.Nc3 Nbd7 5.cxd5 exd5 6.Bg5 c6 7.e3 h6 8.Bh4 Be7 9.Qc2 O-O 10.Bd3 Re8 11.Nd2 a6 12.O-O c5 13.dxc5 Nxc5 14.Nf3 Nxd3 15.Qxd3 Bg4 16.Nd4 Ne4 17.Bxe7 Rxe7 18.h3 Bh5 19.Rac1 Qd7 20.Nxe4 dxe4 21.Qc4 Rae8 22.Rc3 Kh7 23.Rfc1 f6 24.Qc5 Bf7 25.Qb6 Qd8 26.Rc7 Bd5 27.Rxe7 Qxb6 28.Rxe8 Bc6 29.Re7 Qxb2 30.Rc2 Qb4 31.Rc7 h5 32.g3 Qb6 33.Rc8 Bd7 34.R8c5 Kh6 35.Kh2 Qd6 36.Kg2 g6 37.Rc7 Ba4 38.Rc1 Bc6 39.Rc8 Qd7 40.Ra8 Bd5 41.Rh8+ Kg7 42.Rhc8 Bf7 43.R1c7 Qd5 44.a4 Qa2 45.Rxb7 Kh6 46.Rc2 Qd5 47.Rcc7 Bg8 48.Rb6 f5 49.h4 Qe5 50.Rcc6 Bf7 51.Rxa6 Qd5 52.Rc7 Bg8 53.a5 Qe5 54.Re7 Qc5 55.Raa7 f4 56.gxf4 Qc8 57.Rad7 Qa6 58.Rg7 1-0
2024.12.01 US Chess Masters 2024
276079 GM Koustav, Chatterjee (2510) IM Druska, J (2433) 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 Ne8 10.Bg3 Nd6 11.Qc2 Re8 12.O-O Bf8 13.Rad1 a5 14.Rfe1 Na6 15.a3 Nc7 16.Nc1 Ncb5 17.Nxb5 Nxb5 18.Bxb5 cxb5 19.Nd3 Bf5 20.Qb3 b4 21.axb4 a4 22.Qa3 Qb6 23.Rc1 Qb5 24.Red1 Rec8 25.Rxc8 Rxc8 26.Nc5 b6 27.Nxa4 Bxb4 28.Qa2 Ra8 29.b3 Rc8 30.h3 Rc2 31.Qa1 Bd2 32.Bf4 Qxb3 33.Rxd2 Rxd2 34.Nc3 Be6 35.e4 Rd3 36.Qa8+ Kh7 37.Nxd5 Bxd5 38.exd5 Rxd4 39.Be3 Rxd5 40.Qb7 b5 41.Kh2 Re5 0-1
2024.11.30 US Chess Masters 2024
276053 IM Wang, Tianqi (2323) GM Koustav, Chatterjee (2510) 1/2-1/2
1.d4 Nf6 2.Nf3 d5 3.c4 e6 4.e3 b6 5.b3 Bb7 6.Bd3 Bd6 7.O-O Nbd7 8.cxd5 exd5 9.Ba3 Bxa3 10.Nxa3 O-O 11.Rc1 c5 12.Qe2 a6 13.Rfd1 Qe7 14.Nb1 Ne4 15.Nc3 b5 16.dxc5 Ndxc5 17.Bb1 Rfd8 18.Nd4 g6 19.Qb2 b4 20.Nce2 Rac8 21.Bxe4 dxe4 22.Nf4 a5 23.Qd2 Qg5 24.Rc2 Nd3 25.Rxc8 Rxc8 26.Nde2 Ba6 27.h3 h5 28.a3 bxa3 29.Ra1 Qh4 30.g3 Qf6 31.Nd4 Nxf4 32.gxf4 Rc5 33.Rxa3 Qb6 34.Ra1 Bc8 35.Kh2 Qc7 36.Rg1 Kh7 37.b4 axb4 38.Qxb4 Rc4 39.Qb2 Rc5 40.Qb1 Qe7 41.Rc1 Rxc1 42.Qxc1 Qh4 43.Qf1 Qe7 44.Qg2 f6 45.Qg3 g5 46.f5 h4 47.Qb8 Qe5+ 48.Qxe5 fxe5 49.Nc6 Bxf5 50.Nxe5 Kg7 51.Nc6 Kf6 52.Nd4 Bc8 53.Kg2 Bb7 54.Kh2 Ke5 55.Kg2 Ba6 56.Nc6+ Kd6 57.Nd4 Kd5 58.Kh2 Bf1 59.Nf5 Bb5 60.Nd4 Bd7 61.Kg2 Kc4 62.Kh2 Kd3 63.Kg2 Kd2 64.Kh2 Bc8 65.Kg2 Ke1 66.Nc2+ Kd1 67.Nd4 Kd2 68.Kh2 Ke1 69.Kg2 Ba6 70.Ne6 Bf1+ 71.Kg1 Bxh3 72.Nxg5 Bf5 73.Kg2 Ke2 74.Nxe4 Bxe4+ 75.Kh3 Kxf2 76.Kxh4 Kxe3 1/2-1/2
2024.11.29 US Chess Masters 2024
275982 GM Koustav, Chatterjee (2510) IM Tokhirjonova, Gulrukhbegim (2385) 1-0
1.Nf3 Nf6 2.c4 e6 3.Nc3 d5 4.d4 c6 5.g3 dxc4 6.Bg2 b5 7.Ne5 Nd5 8.O-O Be7 9.a4 b4 10.Nb1 Ba6 11.e4 Nf6 12.Re1 O-O 13.Be3 Nfd7 14.Nf3 Qa5 15.Nbd2 Nb6 16.Bf1 c3 17.Nb3 Qh5 18.bxc3 bxc3 19.Ne5 Qxd1 20.Rexd1 Bxf1 21.Kxf1 N6d7 22.a5 f5 23.Rac1 Nf6 24.Rxc3 Nxe4 25.Rc2 Rd8 26.Rb1 Rd5 27.f3 Nf6 28.Nc5 Bxc5 29.Rxc5 Na6 30.Rxc6 Rxa5 31.Rb7 Re8 32.Rxa7 Nd5 33.Bf2 Ndb4 34.Rxe6 Rxe5 35.Rxe5 Rc8 36.Ree7 1-0
2024.11.29 US Chess Masters 2024
275993 GM Donchenko, Alexa (2617) GM Koustav, Chatterjee (2510) 1-0
1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.d3 Bc5 5.c3 d6 6.O-O a5 7.Re1 O-O 8.h3 Be6 9.Bb5 Ba7 10.d4 Ne7 11.Bf1 Ng6 12.Be3 exd4 13.cxd4 d5 14.e5 Ne4 15.Nc3 f5 16.exf6 Qxf6 17.Nxe4 dxe4 18.Ng5 h6 19.Nxe4 Qf7 20.Qh5 Bb6 21.Nc5 Bd5 22.Rac1 Rad8 23.b3 Rd6 24.Na4 Ba7 25.Nc3 c6 26.Nxd5 cxd5 27.Bd3 Rf6 28.Qg4 Nf4 29.Bb1 Ne6 30.Qe2 Qd7 31.Qd3 Nf4 32.Qh7+ Kf7 33.Bxf4 Rxf4 34.Rc7 Qxc7 35.Bg6+ Kf6 36.Bh5 Qf7 37.Bxf7 Rxf7 38.g3 Rf5 39.Rd1 Rf8 40.Kg2 Re8 41.Rd2 Rf8 42.Rd3 Bb6 43.Qxf5+ Kxf5 44.Rf3+ Ke4 45.Rxf8 Bxd4 46.Kf1 1-0
2024.11.28 US Chess Masters 2024
275938 GM Koustav, Chatterjee (2510) IM Petenyi, T (2303) 1/2-1/2
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.h3 O-O 6.Be3 c5 7.Nf3 cxd4 8.Nxd4 Nc6 9.Be2 Nxd4 10.Bxd4 Bd7 11.O-O Bc6 12.Qd3 a6 13.a4 a5 14.Rfe1 Nd7 15.Bxg7 Kxg7 16.Bf1 Nc5 17.Qc2 e5 18.Rad1 Qe7 19.Nd5 Bxd5 20.Rxd5 Rfd8 21.g3 Ne6 22.Red1 b6 23.h4 Nd4 24.R1xd4 exd4 25.Qd3 Rac8 26.Rxd4 Rc5 27.f4 f6 28.Bg2 Qc7 29.b3 Qe7 30.Bf3 h5 31.Kg2 Kh6 32.Bd1 Kg7 33.Bc2 Qe6 34.Kh2 Rd7 35.Kg2 Rd8 36.Qf3 Rd7 37.Rd2 Re7 38.Rf2 Qg4 39.Qd3 Qe6 40.Qd1 Rd7 41.Qd3 Re7 42.f5 gxf5 43.exf5 Qd7 44.Qd1 Qc6+ 45.Kh2 Qe8 46.Bd3 Re1 47.Qf3 Qe3 48.Kg2 Qxf3+ 49.Kxf3 Rce5 50.Rd2 d5 51.Kf2 Rc1 52.Bc2 dxc4 53.bxc4 Rc5 54.Rd7+ Kf8 55.Bd3 Ra1 56.Rd6 Ke7 57.Re6+ Kf7 58.Rxb6 Rxa4 59.Rb7+ Kf8 60.Ke3 Rc8 61.Rb6 Ke7 62.Rb7+ Kf8 63.Rb6 Ke7 64.Re6+ 1/2-1/2
2024.09.03 1000GM Labor Super Swiss
376406 IM Gongora Montes, B (2111) GM Koustav, Chatterjee (2524) 1/2-1/2
1.d4 Nf6 2.Nf3 d5 3.Bg5 c5 4.e3 Nc6 5.Nc3 Bg4 6.Be2 e6 7.O-O Bxf3 8.Bxf3 cxd4 9.exd4 Be7 10.Ne2 O-O 11.c3 Rc8 12.Nc1 Na5 13.Nd3 Nc4 14.Qe2 h6 15.Bf4 Bd6 16.Rad1 Re8 17.g3 Re7 18.Bg2 Bxf4 19.Nxf4 Qa5 20.Nd3 Rec7 21.Bh3 Ne4 22.f3 Ned6 23.Kh1 a6 24.a3 Qb5 25.Rf2 Re8 26.Re1 Rce7 27.Qc2 Qc6 28.Rfe2 a5 29.Bg2 b5 30.Qc1 Nb7 31.g4 Qd6 32.g5 hxg5 33.Qxg5 Qd8 34.Nf4 Rd7 35.Qg4 Qf6 36.Bh3 Rde7 37.Nh5 Qh6 38.Rg1 g6 39.Nf6+ Kg7 40.Nxe8+ Rxe8 41.Qg3 a4 42.Bf1 Nbd6 43.Qf2 Rh8 44.Re1 Nd2 45.Rg2 Nxf1 46.Rxf1 Nc4 47.Re1 Qf4 48.Rg4 Qf6 49.Kg1 Rh5 50.Re2 Qf5 51.Kg2 Qd3 52.Rg3 Qf5 53.Kh1 Qf6 54.Re1 Nd6 55.Qe2 Kg8 56.Rg2 Nc4 57.Reg1 Qf5 58.Rg4 Rh3 59.Rf1 Qh5 60.Rg2 Qh6 61.Rxg6+ fxg6 62.Qxe6+ Kh7 63.Qd7+ Kh8 64.Qc8+ Kg7 65.Qc7+ Kf6 66.Qd8+ Kg7 67.Qc7+ Kf6 68.Qd8+ Kg7 69.Qc7+ 1/2-1/2
2024.09.03 1000GM Labor Super Swiss
376421 GM Koustav, Chatterjee (2524) CM Montes Orozco, Miguel Angel (2155) 1-0
1.Nf3 d5 2.g3 Nf6 3.Bg2 e6 4.O-O Be7 5.c4 d4 6.e3 c5 7.exd4 cxd4 8.d3 O-O 9.Re1 Nc6 10.Na3 Nd7 11.Nc2 e5 12.b4 f6 13.Rb1 a5 14.a3 Re8 15.Nh4 Nf8 16.f4 g5 17.fxg5 fxg5 18.b5 Nb8 19.Rxe5 Nbd7 20.Rxe7 Qxe7 21.Nf5 Qf6 22.Qh5 Qg6 23.Bd5+ Kh8 24.Qxg6 Nxg6 25.Bxg5 Rf8 26.Ncxd4 Nf6 27.Bg2 Ne5 28.Rf1 1-0
2024.09.02 1000GM Labor Super Swiss
376361 GM Delgado Ramirez, N (2485) GM Koustav, Chatterjee (2524) 1/2-1/2
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.d3 b5 6.Bb3 Bc5 7.a4 b4 8.O-O d6 9.a5 O-O 10.Be3 Bxe3 11.fxe3 Ne7 12.Qe1 c5 13.Nbd2 Nc6 14.Nc4 Be6 15.Ba4 Qc7 16.Nb6 Rad8 17.Bxc6 Qxc6 18.Ng5 h6 19.Nxe6 fxe6 20.Qg3 Kh7 21.b3 Rf7 22.Rf3 Rdf8 23.Raf1 Qc7 24.Qh3 Qe7 25.Qg3 Qc7 26.Qh3 Qe7 27.Qg3 1/2-1/2
2024.09.02 1000GM Labor Super Swiss
376380 GM Koustav, Chatterjee (2524) GM Quesada Perez, Ya (2581) 0-1
1.Nf3 Nf6 2.g3 d5 3.Bg2 c6 4.O-O Bg4 5.d4 Nbd7 6.Nbd2 e6 7.Re1 Be7 8.e4 dxe4 9.Nxe4 Nxe4 10.Rxe4 Nf6 11.Re1 O-O 12.c3 Qb6 13.h3 Bxf3 14.Bxf3 Rfd8 15.Qc2 Rd7 16.Kg2 a5 17.h4 Rad8 18.a3 Qa6 19.Bg5 h6 20.Be2 Qb6 21.Bxf6 Bxf6 22.b4 Qc7 23.Qe4 Qd6 24.Bc4 b6 25.Re3 Ra7 26.Rae1 axb4 27.axb4 Ra3 28.Qc2 Re8 29.f4 h5 30.f5 e5 31.Qe2 b5 32.Ba2 Re7 33.Bb1 Qd5+ 34.Kh3 Rxc3 35.Rxc3 exd4 36.Be4 Rxe4 37.Qxe4 dxc3 38.Qxd5 cxd5 39.Kg2 d4 40.Kf3 d3 41.Ke3 d2 42.Ra1 Be7 43.Kd3 Bxb4 44.Kc2 Bd6 45.Ra8+ Kh7 46.Rd8 Bxg3 47.Kxc3 Bxh4 48.Rd7 Be1 0-1
2024.09.01 1000GM Labor Super Swiss
384952 FM Guo, Andrew (2207) GM Koustav, Chatterjee (2524) 0-1
1.d4 Nf6 2.c4 e6 3.g3 d5 4.Bg2 Bb4+ 5.Bd2 Be7 6.Nf3 O-O 7.O-O c6 8.Qc2 Nbd7 9.Bf4 a5 10.Rd1 a4 11.Nbd2 Nh5 12.Be3 f5 13.Nf1 Bd6 14.c5 Bc7 15.b4 f4 16.Bd2 e5 17.dxe5 Nxe5 18.Nxe5 Bxe5 19.Bc3 Qf6 20.Bxe5 Qxe5 21.Rac1 Bg4 22.Re1 Nf6 23.Nd2 Qh5 24.f3 Bf5 25.Qc3 Bh3 26.Nf1 fxg3 27.hxg3 Rae8 28.Qd4 Nd7 29.Kh2 Bxg2+ 0-1
2024.09.01 1000GM Labor Super Swiss
384971 GM Koustav, Chatterjee (2524) IM Macovei, Andrei (2466) 1/2-1/2
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.Nf3 Qc7 10.Be2 b6 11.Bb2 cxd4 12.cxd4 Ba6 13.O-O Bxe2 14.Qxe2 Nbd7 15.e4 Rfc8 16.Rfc1 Qb7 17.Re1 b5 18.Rab1 1/2-1/2
2024.08.31 1000GM Labor Super Swiss
384906 FM Sivakumar, Shaaketh (2307) GM Koustav, Chatterjee (2524) 1/2-1/2
1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.d3 Nf6 5.c3 d6 6.O-O a5 7.h3 h6 8.Nbd2 O-O 9.Re1 Be6 10.b3 Ba7 11.Bb2 Bxc4 12.bxc4 a4 13.Nf1 Nd7 14.Ng3 Ne7 15.Nh4 Kh7 16.Bc1 Nc5 17.Be3 Ne6 18.Rb1 Bxe3 19.fxe3 b6 20.Rf1 Ng8 21.Nf3 Ng5 22.Qe2 g6 1/2-1/2
2024.08.31 1000GM Labor Super Swiss
384929 GM Koustav, Chatterjee (2524) FM Garcia Guerrero, I (2291) 1/2-1/2
1.Nf3 d5 2.e3 Nf6 3.c4 e6 4.Nc3 c5 5.cxd5 exd5 6.d4 Nc6 7.Bb5 cxd4 8.Nxd4 Bd7 9.O-O Bd6 10.Nf3 a6 11.Bxc6 Bxc6 12.b3 O-O 13.Bb2 Qe7 14.Ne2 Ne4 15.Ng3 Nxg3 16.hxg3 Rad8 17.Rc1 Rfe8 18.Qd4 f6 19.Rfd1 Qe4 20.Qb6 Be5 21.Nd4 Bxd4 22.Bxd4 Rc8 23.Rc5 h5 24.a4 h4 25.gxh4 Qxh4 26.Rdc1 Re4 27.R5c2 Qh5 28.f4 Rce8 1/2-1/2
2024.08.30 1000GM Labor Super Swiss
384886 GM Koustav, Chatterjee (2524) CM Guo, Ethan (2189) 1-0
1.Nf3 Nf6 2.c4 g6 3.d4 Bg7 4.e3 O-O 5.Be2 c5 6.dxc5 Na6 7.O-O Nxc5 8.b4 Nfe4 9.Nd4 Ne6 10.Bb2 Qb6 11.a3 a5 12.Nd2 Nxd4 13.exd4 d5 14.Nxe4 dxe4 15.Qd2 Rd8 16.Rfd1 Bf5 17.c5 Qe6 18.Rac1 axb4 19.axb4 Bg4 20.Bc4 Qf5 21.Re1 Be5 22.d5 Bxb2 23.Qxb2 Qg5 24.Kh1 Qf4 25.Re3 Rac8 26.h3 Bf5 27.g4 Bd7 28.Rce1 Qh6 29.Kg2 Qg5 30.Rxe4 h5 31.f3 hxg4 32.hxg4 Bf5 33.Rh1 1-0
2024.08.03 SixDays July GMB 2024
433153 FM Pribelszky, Bence (2366) GM Koustav, Chatterjee (2525) 1/2-1/2
1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.d3 Bc5 5.c3 d6 6.O-O O-O 7.Nbd2 a5 8.h3 h6 9.Re1 Be6 10.Bb5 Ba7 11.Nf1 Ne7 12.Ng3 Ng6 13.d4 c6 14.Bd3 Re8 1/2-1/2
2024.08.02 SixDays July GMB 2024
433142 FM Ezra, Paul Chambers (2359) GM Koustav, Chatterjee (2525) 0-1
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Bc5 5.O-O Nge7 6.c3 Ng6 7.d4 Ba7 8.Bg5 f6 9.Be3 O-O 10.Nbd2 d6 11.Re1 Kh8 12.Bc2 a5 13.h3 f5 14.exf5 Bxf5 15.Ba4 exd4 16.cxd4 Nb4 17.Ng5 h6 18.Qh5 Bxd4 19.Nf7+ Rxf7 20.Bxd4 Qh4 21.Qxh4 Nxh4 22.g3 Ng6 23.g4 Bc2 24.a3 Bxa4 25.axb4 Bc6 26.bxa5 Kh7 27.Ra3 Rf4 28.Be3 Rb4 29.b3 Nf4 30.Kh2 Rf8 31.Rc1 Nd3 32.Rc4 Rxc4 33.bxc4 Nxf2 34.a6 b6 35.a7 Ba8 36.Bd4 c5 37.Be3 Nd1 38.Bg1 Re8 39.Kg3 Re2 40.Nf3 Rc2 41.Rd3 Nc3 42.Re3 Ne4+ 43.Kf4 Rxc4 44.Kf5 Bd5 45.Nh4 Ra4 46.g5 hxg5 47.Nf3 g6+ 48.Kg4 Be6# 0-1
2024.08.02 SixDays July GMB 2024
433149 GM Koustav, Chatterjee (2525) IM Yip, Carissa (2402) 1-0
1.d4 Nf6 2.c4 g6 3.Nf3 Bg7 4.e3 O-O 5.Be2 d6 6.O-O Nc6 7.d5 Nb8 8.Nc3 e5 9.e4 a5 10.Ne1 Na6 11.Nd3 b6 12.Be3 Nc5 13.Nxc5 bxc5 14.a3 Nd7 15.Rb1 f5 16.f3 f4 17.Bf2 g5 18.b4 axb4 19.axb4 cxb4 20.Rxb4 Rf6 21.Ra4 Rb8 22.Ra7 Rf7 23.Qa1 h5 24.Rb1 Nb6 25.c5 dxc5 26.Bxc5 Bf8 27.Bxf8 Qxf8 28.Nb5 Qc5+ 29.Kh1 g4 30.Qxe5 Nc4 31.Bxc4 Qxc4 32.Raa1 Qe2 33.Nd4 Qa2 34.Qe8+ Rf8 35.Qg6+ Kh8 36.Qxh5+ Kg8 37.Rc1 Qb2 38.Ne6 Bxe6 39.dxe6 g3 40.e7 Rfe8 41.Qg5+ Kh7 42.Qxf4 1-0
2024.08.01 SixDays July GMB 2024
433140 GM Koustav, Chatterjee (2525) IM Gedajlovic, Max (2386) 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.Nf3 Qc7 10.Be2 b6 11.Bb2 cxd4 12.cxd4 Ba6 13.Bxa6 Nxa6 14.Qe2 Nb8 15.O-O Qb7 16.Rfe1 Nbd7 17.e4 b5 18.Nd2 a6 19.Nf1 Ne8 20.d5 exd5 21.exd5 Nb6 22.Ne3 f5 23.Rad1 Nd6 24.Be5 Rad8 25.f4 Qf7 26.Rd3 Rd7 27.Rc1 Ndc4 28.d6 Re8 29.Nxc4 Nxc4 30.Qf3 h6 31.Rd5 Red8 32.Rcd1 Qe6 33.h3 Nb6 34.Rc5 Nc4 35.Qg3 Kh7 36.Rd4 Qg6 37.Qd3 Qe6 38.Kh2 Re8 39.Qf3 Red8 40.Qg3 Qg6 41.Qd3 Qe6 42.Qf3 Re8 43.Qc6 Na5 44.Qd5 Qxd5 45.Rdxd5 Red8 46.Rc7 Nb7 47.Rc6 Ra8 48.g4 fxg4 49.hxg4 Kg8 50.f5 Kf7 51.Kg3 Na5 52.Rc7 Rd8 53.Bd4 Nc4 54.Bc5 Ke8 55.Rc6 Ra8 56.Kf4 a5 57.Rd4 a4 58.Re4+ Kd8 59.Re6 Rb7 60.Ke4 Rab8 61.Kd5 Rf7 62.Rg6 Rbb7 63.Ke6 Rf8 64.d7 Rf7 65.Rc8# 1-0
2024.07.31 SixDays July GMB 2024
433130 GM Pacher, M (2384) GM Koustav, Chatterjee (2525) 1/2-1/2
1.d4 Nf6 2.c4 e6 3.Nf3 d5 4.Nc3 Bb4 5.Bg5 h6 6.Bxf6 Qxf6 7.e3 O-O 8.Rc1 Nc6 9.cxd5 exd5 10.Be2 Ne7 11.Qb3 Qb6 12.O-O c6 13.Na4 Qa5 14.Nc5 b6 15.Nd3 Bd6 16.Nde5 Bb7 17.Bd3 Rac8 18.a3 Ba6 19.Rfd1 c5 20.dxc5 bxc5 21.Bb1 Qc7 22.Qc2 f5 23.Nd3 c4 24.Nde1 Rf6 25.g3 Qb6 26.Qc3 Rb8 27.Rd2 Bc8 28.Ng2 Be6 29.Nf4 Bf7 30.Ne5 Bxe5 31.Qxe5 Nc6 32.Qc3 Ne7 33.Qe5 Nc6 34.Qc3 Ne7 35.Qe5 1/2-1/2
2024.07.31 SixDays July GMB 2024
433131 GM Koustav, Chatterjee (2525) Li, Guohao (2331) 1/2-1/2
1.Nf3 d5 2.e3 Nf6 3.c4 c6 4.Nc3 e6 5.b3 Nbd7 6.Bb2 Bd6 7.Qc2 O-O 8.Be2 Re8 9.O-O e5 10.cxd5 Nxd5 11.Ne4 Bf8 12.Ng3 g6 13.a3 Qe7 14.d3 a5 15.Rac1 Bg7 16.Rfe1 h6 17.Bf1 Nf8 18.h3 Bd7 19.Ne4 g5 20.g3 Ng6 21.Ned2 h5 22.e4 Nc7 23.d4 g4 24.hxg4 hxg4 25.Nxe5 Nxe5 26.dxe5 b5 27.a4 Ne6 28.Bg2 Ng5 29.e6 Qxe6 30.e5 Qh6 31.Re3 Rad8 32.Rce1 Be6 33.Ne4 Nh3+ 34.Bxh3 Qxh3 35.Nf6+ Bxf6 36.exf6 Rd6 37.Qc5 Rd5 38.Qxc6 Rh5 39.Re5 Qh2+ 40.Kf1 Rc8 41.Qe4 Rxe5 42.Qxe5 Qh1+ 43.Ke2 Qf3+ 44.Kf1 Bf5 45.Kg1 Kh7 46.Re3 Qd1+ 47.Re1 Qf3 48.Re3 Qd1+ 1/2-1/2
2024.07.30 SixDays July GMB 2024
433119 FM Chubakov, Sultan (2330) GM Koustav, Chatterjee (2525) 1/2-1/2
1.d4 Nf6 2.c4 e6 3.g3 c5 4.Nf3 cxd4 5.Nxd4 d5 6.Bg2 e5 7.Nf3 d4 8.O-O Nc6 9.e3 Be7 10.exd4 exd4 11.Bf4 Be6 12.Ne5 Rc8 13.Nd2 O-O 14.Re1 Qb6 15.Qb3 Nh5 16.Nxc6 bxc6 17.Be5 Rfd8 18.Qxb6 axb6 19.Nb3 Bf6 20.Rad1 Bxc4 21.Bxf6 Nxf6 22.Nxd4 c5 23.Nf5 Rxd1 24.Rxd1 Kf8 25.b3 1/2-1/2
2024.07.30 SixDays July GMB 2024
433122 GM Koustav, Chatterjee (2525) GM Fodor, T jr (2494) 0-1
1.d4 d5 2.c4 e6 3.Nc3 c6 4.e3 Nf6 5.Nf3 Nbd7 6.Qc2 Bd6 7.Bd3 dxc4 8.Bxc4 b5 9.Be2 Bb7 10.O-O O-O 11.e4 e5 12.dxe5 Nxe5 13.Nh4 g6 14.f4 Bc5+ 15.Kh1 Neg4 16.g3 b4 17.Na4 Bd4 18.e5 c5+ 19.Bf3 Nd5 20.Ng2 Qc8 21.Rb1 Ba6 22.Be2 Rd8 23.b3 Nc3 24.Nxc3 bxc3 25.f5 Nxe5 26.Bh6 Bb7 27.Bb5 a6 28.Ba4 Nf3 29.b4 c4 30.b5 Qxf5 31.Qxf5 gxf5 32.Bc2 Be4 33.Bxe4 fxe4 34.Rfc1 axb5 35.Nh4 Rxa2 36.Nxf3 exf3 37.Rxb5 c2 38.h4 Ra1 39.Rxa1 Bxa1 40.Kh2 Bg7 41.Bg5 h6 0-1
2024.07.29 SixDays July GMB 2024
433113 GM Koustav, Chatterjee (2525) IM Azarya, J (2370) 1-0
1.Nf3 d5 2.e3 Nf6 3.c4 e6 4.Nc3 c5 5.cxd5 exd5 6.d4 Nc6 7.Bb5 cxd4 8.Nxd4 Bd7 9.O-O Bd6 10.Nf3 Be6 11.b3 O-O 12.Bb2 a6 13.Be2 Ne4 14.Nxe4 dxe4 15.Nd4 Qc7 16.Nxc6 Bxh2+ 17.Kh1 bxc6 18.Qd4 f6 19.Qxe4 Be5 20.Bxe5 fxe5 21.Rac1 Bd7 22.Rc5 Rae8 23.Bd3 g6 24.Bxa6 Rf5 25.Be2 Ref8 26.Kg1 Qd6 27.Qc4+ R5f7 28.Qc3 Re7 29.Rd1 Qf6 30.Bf3 g5 31.Rd2 g4 32.Bxc6 g3 33.fxg3 Qf1+ 34.Kh2 Rf6 35.Bxd7 1-0
2024.07.25 57th Biel Master Open
440054 GM Koustav, Chatterjee (2525) WIM Nurmanova, Alua (2266) 1/2-1/2
1.Nf3 Nf6 2.g3 g6 3.b3 Bg7 4.Bb2 O-O 5.Bg2 d6 6.d4 a5 7.a4 Nc6 8.O-O Bf5 9.Re1 e5 10.dxe5 dxe5 11.Na3 Qe7 12.Nh4 Be6 13.Bxc6 bxc6 14.e4 Nd7 15.Qe2 Nb6 16.Rad1 Bh6 17.Nb1 Rfb8 18.Ba3 Qe8 19.Qf3 Nd7 20.Qc3 Ra6 21.Nd2 Bf8 22.Bxf8 Qxf8 23.Ng2 Qb4 24.Qa1 Rd8 25.Ne3 f6 26.Ndc4 Raa8 27.Rd3 Nb6 28.Nb2 Kf7 29.f3 Qc5 30.Kg2 Rd6 31.Qc1 Rad8 32.Red1 Qa3 33.h4 h5 34.Qb1 Qc5 35.Kf2 Rd4 36.Qc1 Qa3 37.Qb1 Qc5 38.Qa1 Kg7 39.c3 R4d7 40.Rxd7+ Nxd7 41.Nd3 Qb6 42.Qa3 Re8 43.b4 Kf7 44.Qc1 Ra8 45.Qc2 Qa7 46.Ra1 c5 47.b5 c4 48.Nb2 Qc5 49.Rd1 Nb6 50.Ke2 1/2-1/2
2024.07.24 57th Biel Master Open
439995 IM Rosen, Eric (2374) GM Koustav, Chatterjee (2525) 1/2-1/2
1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Nxd4 Nf6 5.Nxc6 bxc6 6.Nd2 d5 7.exd5 cxd5 8.Bb5+ Bd7 9.Bxd7+ Qxd7 10.O-O Be7 11.b3 O-O 12.Bb2 Rfe8 13.Qf3 Rad8 14.Rad1 c5 15.Nc4 Qe6 16.Ne3 Ne4 17.Qf5 Qxf5 18.Nxf5 Bf6 19.Bxf6 Nxf6 20.Rfe1 Ne4 21.Kf1 Re6 22.Re3 g6 23.Ng3 Nxg3+ 24.Rxg3 d4 25.Rc3 Rd5 26.Rc4 Rde5 27.g3 g5 28.c3 dxc3 29.Rc1 Re2 30.Rxc5 h6 31.a4 Rd2 32.Re1 Rf6 33.Re2 Rf3 34.Rxd2 cxd2 35.Rd5 Rxb3 36.Rxd2 Rb4 37.Rd6 1/2-1/2
2024.07.23 57th Biel Master Open
439930 GM Koustav, Chatterjee (2525) IM Madaminov, Mukhiddin (2512) 0-1
1.c4 e6 2.Nc3 d5 3.d4 Nf6 4.cxd5 exd5 5.Bg5 Be7 6.e3 O-O 7.Bd3 Re8 8.Nge2 c6 9.O-O a5 10.f3 Nbd7 11.a4 Nf8 12.Qc2 g6 13.Rad1 Ne6 14.Bh4 Qb6 15.Qd2 Bd7 16.Kh1 Rad8 17.Bb1 Bc8 18.Nf4 Nxf4 19.exf4 Qc7 20.g4 Kh8 21.Rg1 Ng8 22.Bg3 Bd6 23.Rg2 Re7 24.Rdg1 Rde8 25.Nd1 Bb4 26.Qd3 b6 27.f5 Bd6 28.Bh4 Rd7 29.Nc3 Bf4 30.Ne2 Re3 31.Qd1 Bd6 32.Nc3 Ba6 33.g5 Rde7 34.f6 R7e6 35.Be1 h6 36.h4 Qd7 37.Bg3 Bxg3 38.Rxg3 Qd6 39.h5 Re1 40.hxg6 Nxf6 41.Rxe1 Qxg3 42.Rxe6 Qh4+ 43.Kg2 Qxg5+ 44.Kh2 fxe6 45.Qe1 Nh5 46.Nd1 Qf4+ 47.Kg2 Qxd4 48.Nf2 Nf4+ 49.Kh2 Ne2 50.Ng4 h5 51.Qh4 Qg1+ 52.Kh3 Nf4# 0-1
2024.07.22 57th Biel Master Open
450763 Xue, Haowen (2452) GM Koustav, Chatterjee (2525) 1/2-1/2
1.d4 Nf6 2.c4 e6 3.Nf3 d5 4.Nc3 Bb4 5.Qa4+ Nc6 6.e3 O-O 7.Bd2 Re8 8.a3 Bf8 9.Rd1 a6 10.Qc2 b6 11.Bd3 Bb7 12.O-O Ne7 13.e4 dxc4 14.Bxc4 Ng6 15.Bg5 Qc8 16.Bxf6 gxf6 17.b4 Kh8 18.Rfe1 Bd6 19.g3 Rg8 20.d5 e5 21.Kh1 Qd7 22.Bf1 Bc8 23.Ng1 Qe7 24.Rb1 Bd7 25.Bh3 Bxh3 26.Nxh3 a5 27.Nb5 axb4 28.Nxd6 Qxd6 29.axb4 Ne7 30.Rec1 Ra7 31.Ng1 f5 32.f3 Rga8 33.b5 Qh6 34.Qc3 f6 35.Rb2 Rg8 36.Rg2 fxe4 37.fxe4 Nc8 38.Rgc2 Nd6 39.Qd3 Ra4 40.Re1 Rd4 41.Qf3 Rg7 42.Qg2 Ra4 43.Rce2 Nxb5 44.Nf3 Nd6 45.Nh4 Qg5 46.Rf2 Rc4 47.Nf5 Nxf5 48.Rxf5 Qh6 49.Ref1 Rg6 50.Qe2 Rc3 51.Kg2 Re3 52.Qc2 Qh4 53.R1f3 Qxe4 54.Qxe4 Rxe4 55.Rxf6 Re2+ 56.Rf2 Rxf2+ 57.Rxf2 Rd6 58.Rf7 Rxd5 59.Rxc7 Rd2+ 60.Kf3 Rxh2 61.Rb7 Rh6 62.Ke4 Kg8 63.Kxe5 Rc6 64.g4 h6 65.g5 hxg5 66.Kf5 Kf8 67.Kxg5 Ke8 68.Kf4 Kd8 69.Ke4 Kc8 70.Rh7 Rd6 71.Ke5 Rd1 72.Ke4 Rd7 73.Rxd7 1/2-1/2
2024.07.20 57th Biel Master Open
450698 GM Koustav, Chatterjee (2525) GM Sethuraman, S (2589) 1/2-1/2
1.d4 Nf6 2.c4 d6 3.Nf3 g6 4.Nc3 Bf5 5.Qb3 Qc8 6.g3 Bg7 7.Bg2 Nc6 8.d5 Nd8 9.O-O Bh3 10.e4 Bxg2 11.Kxg2 O-O 12.h3 Nd7 13.Be3 c5 14.Qc2 e5 15.Ne1 f6 16.Nd3 Nf7 17.Rae1 Re8 18.f4 exf4 19.gxf4 Nb6 20.b3 f5 21.e5 dxe5 22.fxe5 Nxe5 23.Nxc5 Nexc4 24.bxc4 Rxe3 25.Rxe3 Qxc5 26.Qe2 Rf8 27.Rff3 Nxc4 28.Re7 f4 29.Qe6+ Kh8 30.Ne4 Ne3+ 31.Kh2 Qxd5 32.Qxd5 Nxd5 33.Rd7 Ne3 34.Ng5 Rf5 35.Ne6 Bf6 36.Rxb7 Kg8 37.Rxa7 g5 38.Rf2 Rd5 39.Rb7 Rd1 40.Rb5 h6 41.Nxf4 gxf4 42.Rxf4 Kg7 43.Rb7+ Kg6 44.Rb6 Rd2+ 45.Kh1 Rd1+ 46.Kh2 Rd2+ 47.Kh1 1/2-1/2
2024.07.19 57th Biel Master Open
450633 GM Moiseenko, A1 (2570) GM Koustav, Chatterjee (2525) 1/2-1/2
1.d4 Nf6 2.c4 e6 3.Nf3 d5 4.Nc3 Bb4 5.cxd5 exd5 6.Bf4 Ne4 7.Rc1 Nc6 8.Nd2 Nxd4 9.Ncxe4 dxe4 10.Qa4+ Nc6 11.Rxc6 Bxd2+ 12.Bxd2 bxc6 13.Qxc6+ Bd7 14.Qxe4+ Be6 15.Qc6+ Bd7 16.Qe4+ Be6 17.Qc6+ Bd7 1/2-1/2
2024.07.18 57th Biel Master Open
450567 GM Koustav, Chatterjee (2525) GM Jumabayev, R (2565) 1/2-1/2
1.Nf3 d5 2.g3 c5 3.Bg2 Nf6 4.O-O g6 5.c4 Bg7 6.Qa4+ Bd7 7.Qb3 dxc4 8.Qxc4 Qb6 9.Ne5 Be6 10.Qa4+ Nbd7 11.Nc4 Qc7 12.d3 Bd5 13.Bf4 Qc8 14.e4 Bc6 15.Qb3 O-O 16.Nc3 Nh5 17.Bg5 Qd8 18.Nd5 Nhf6 19.a4 e6 20.Nc3 Qb8 21.h3 Ne5 22.Nxe5 Qxe5 23.Bf4 Qd4 24.Nb5 Qd7 25.Rfd1 Rfd8 26.Nc7 Rac8 27.Nb5 Ra8 28.Nc7 Rac8 29.Nb5 1/2-1/2
2024.07.17 57th Biel Master Open
450509 IM Sukandar, I (2338) GM Koustav, Chatterjee (2525) 0-1
1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.d3 Bc5 5.O-O d6 6.a4 a5 7.Be3 Bxe3 8.fxe3 O-O 9.Nbd2 Ne7 10.Nh4 c6 11.Qe1 d5 12.Bb3 Be6 13.Qg3 Nd7 14.Rf2 f6 15.Raf1 Kh8 16.d4 Qb8 17.exd5 cxd5 18.Ne4 Ra6 19.Nc3 g5 20.Nf5 Bxf5 21.Rxf5 Nxf5 22.Rxf5 exd4 23.exd4 Qxg3 24.hxg3 Nb6 25.Nxd5 Nxd5 26.Bxd5 Rd6 27.c3 b6 28.Bc4 Kg7 29.Kf2 h5 30.Be2 Kh6 31.Ke3 Re8+ 32.Kd2 Re7 33.Rf1 g4 34.Bd3 Rde6 35.Rf5 Re3 36.Rxf6+ Kg7 37.Rg6+ Kf7 38.Rxb6 Rxg3 39.Bc4+ Kg7 40.Bd5 h4 41.Rb8 Rd7 42.Be4 Rf7 43.d5 Re7 44.d6 Rxe4 45.d7 Rxg2+ 46.Kd1 Rg1+ 47.Kd2 Ree1 48.Rg8+ Kf7 49.Rf8+ Ke6 50.Re8+ Kxd7 51.Rxe1 Rg2+ 52.Ke3 h3 53.Kf4 h2 54.Rh1 g3 0-1
2024.07.16 57th Biel Master Open
450450 GM Koustav, Chatterjee (2525) IM Haimovich, T (2324) 1-0
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Bd3 d5 6.a3 Bxc3+ 7.bxc3 b6 8.cxd5 exd5 9.Ne2 Re8 10.O-O Ba6 11.Bxa6 Nxa6 12.Qd3 Nb8 13.Bb2 Nbd7 14.f3 Qe7 15.Kf2 c5 16.Ng3 Nf8 17.Rae1 Ne6 18.e4 c4 19.Qd2 dxe4 20.fxe4 Ng4+ 21.Kg1 Qh4 22.h3 Qxg3 23.hxg4 Qxg4 24.e5 Rad8 25.Re3 Rd7 26.Qf2 Nf8 27.a4 Qe6 28.Ba3 Ng6 29.Rf3 Nh8 30.Qh4 Qc6 31.Rh3 h6 32.Bd6 Re6 33.Rg3 Ng6 34.Qg4 Qd5 35.Rb1 h5 36.Qxh5 Rdxd6 37.Rb5 Qe4 38.exd6 Nf4 39.Qg5 Ne2+ 40.Kh2 Nxg3 41.d7 Rh6+ 42.Qxh6 gxh6 43.d8=Q+ Kg7 44.Kxg3 Qe3+ 45.Kh2 Qf4+ 46.Kh3 Qe3+ 47.g3 Qe6+ 48.g4 Qe3+ 49.Kh4 Qf2+ 50.Kh5 Qh2+ 51.Qh4 Qd6 52.Qf2 1-0
2024.07.15 57th Biel Master Open
450389 Rappazzo, Johannes (2169) GM Koustav, Chatterjee (2525) 0-1
1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.b4 Bxb4 5.c3 Ba5 6.d4 d6 7.Qb3 Qd7 8.O-O Bb6 9.Nbd2 Na5 10.Qc2 Ne7 11.dxe5 O-O 12.Ba3 Ng6 13.exd6 cxd6 14.Bd5 Qc7 15.c4 Nf4 16.g3 Nxd5 17.exd5 h6 18.Qe4 Bh3 19.Rfe1 Rac8 20.Qh4 Nxc4 21.Rec1 Nxd2 22.Nxd2 Qd7 23.Ne4 Rxc1+ 24.Rxc1 Re8 25.Re1 Re5 26.Bb2 Bd8 27.Qf4 Rxd5 28.Qf3 Qf5 29.Qc3 Re5 30.Re2 Ba5 31.Qd3 Rd5 32.Qb3 Bg4 33.Re3 Rd1+ 0-1
2024.03.31 College Final Four 2024
596692 IM Beradze, I (2507) GM Koustav, Chatterjee (2534) 1/2-1/2
1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.d4 exd4 5.Nxd4 Bb4 6.Nxc6 bxc6 7.Bd3 d5 8.exd5 O-O 9.O-O Bg4 10.f3 Bh5 11.Bg5 cxd5 12.Bxf6 Qxf6 13.Nxd5 Qxb2 14.Rb1 Bc5+ 15.Kh1 Qxa2 16.Rb5 c6 17.Nf6+ gxf6 18.Rxc5 Bg6 1/2-1/2
2024.03.30 College Final Four 2024
596673 GM Koustav, Chatterjee (2534) GM Gledura, B (2616) 0-1
1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nbd2 a6 5.e3 Bf5 6.Nh4 Be4 7.Qb3 Ra7 8.Nxe4 Nxe4 9.Nf3 e6 10.Bd3 f5 11.Ne5 Bd6 12.Qc2 Qa5+ 13.Ke2 Bxe5 14.dxe5 Nd7 15.f3 Nec5 16.Bd2 Qd8 17.Bc3 O-O 18.cxd5 cxd5 19.Bd4 b6 20.Rac1 Qb8 21.Qc3 Nxd3 22.Kxd3 Nc5+ 23.Bxc5 bxc5 24.Qxc5 Rb7 25.Qd6 Rxb2 26.Qxe6+ Kh8 27.Qxa6 Rxg2 28.Qa4 Qxe5 29.Qd4 Qe6 30.Qb4 Re8 31.Rhe1 Qa6+ 32.Kd4 Rxa2 33.Kc3 Ra4 34.Qb2 Ra3+ 35.Kd4 0-1
2024.03.30 College Final Four 2024
596684 GM Antipov, M2 (2573) GM Koustav, Chatterjee (2534) 1-0
1.d4 Nf6 2.c4 e6 3.Nf3 d5 4.Nc3 c6 5.Bg5 Nbd7 6.cxd5 exd5 7.e3 Be7 8.Bd3 h6 9.Bf4 O-O 10.h3 Ne8 11.Qc2 Nd6 12.g4 b5 13.Rg1 g5 14.Be5 Re8 15.h4 Nf8 16.hxg5 hxg5 17.O-O-O f6 18.Bxd6 Bxd6 19.Kb1 Be6 20.Bf5 Qd7 21.Rh1 Qg7 22.Rh5 Bf7 23.Rh3 Bg6 24.Rdh1 Bxf5 25.Qxf5 Qg6 26.Rh8+ Kg7 27.Qxg6+ Kxg6 28.R8h6+ Kg7 29.Nxg5 fxg5 30.Rxd6 Re6 31.Rxe6 Nxe6 32.Ne2 Rf8 33.Rh2 Kg6 34.Ng3 Ng7 35.Kc2 Rc8 36.Kd3 c5 37.dxc5 Rxc5 38.Ne2 b4 39.f4 Ra5 40.f5+ Kf7 41.Nd4 Rxa2 42.Nf3 a5 43.Nxg5+ Kf6 44.Nf3 Kf7 45.Ne5+ Kg8 46.f6 Ne6 47.g5 Nf8 48.g6 Nxg6 49.Rg2 1-0
2024.01.15 1000GM NY Winter GMB
670840 GM Koustav, Chatterjee (2546) FM Luo, Terry (2342) 1-0
1.Nf3 Nf6 2.d4 g6 3.c4 Bg7 4.e3 O-O 5.Be2 c5 6.dxc5 Qa5+ 7.Bd2 Qxc5 8.b4 Qc7 9.Nc3 b6 10.Rc1 Bb7 11.O-O d6 12.Qc2 Nbd7 13.e4 Rac8 14.h3 Qb8 15.Rfe1 Qa8 16.Bd3 Rfd8 17.Qb1 Nf8 18.Bf4 Ne6 19.Be3 Nd7 20.Nd5 Re8 21.Nd2 Nd4 22.Bf1 b5 23.cxb5 Bxd5 24.exd5 Qxd5 25.Qd3 Nb6 26.Red1 e5 27.Rxc8 Rxc8 28.Nb3 Na4 29.Nxd4 exd4 30.Bxd4 Nc3 31.Bxg7 Qxd3 32.Rxd3 Kxg7 33.Rxd6 Nxa2 34.Rc6 Rd8 35.Bc4 Nxb4 36.Rc7 Rd1+ 37.Kh2 Ra1 38.Rxf7+ Kh8 39.f4 Nc2 40.g4 Ne3 41.Be6 Rb1 42.Rb7 Rb4 43.Kg3 Nf1+ 44.Kh4 Rxf4 45.Kg5 Rf3 46.Rb8+ Kg7 47.Rg8# 1-0
2024.01.15 1000GM NY Winter GMB
670844 IM Levine, Joseph (2376) GM Koustav, Chatterjee (2546) 0-1
1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.d3 Bc5 5.c3 d6 6.O-O a5 7.Re1 O-O 8.h3 Be6 9.Bb5 Ba7 10.Nbd2 Ne7 11.d4 Ng6 12.Nf1 c6 13.Bd3 Nh5 14.g3 Nf6 15.Kg2 Qc8 16.h4 d5 17.exd5 Bxd5 18.c4 Bxf3+ 19.Qxf3 Bxd4 20.h5 e4 21.Bxe4 Ne5 22.Qf4 Qg4 23.Qxg4 Nexg4 24.Bf3 Rfe8 25.Rxe8+ Rxe8 26.Bd2 Nxf2 27.Bxa5 Bxb2 28.Rb1 Nd3 29.Bd2 Ne4 30.Bxe4 Rxe4 31.Ne3 Re7 32.Kf1 g6 33.hxg6 hxg6 34.Ke2 Rd7 35.a4 f5 36.a5 Be5 37.Nf1 Nc5 38.Be1 Kf7 39.Ne3 Ke6 40.Rb6 Bc7 41.Rb1 g5 42.g4 f4 43.Nf5 Rd3 44.Bb4 f3+ 45.Kf1 Nd7 46.Be1 Ne5 47.Rxb7 Nxg4 48.Ng7+ Kd7 49.Rb2 Be5 50.Rb7+ Kc8 51.a6 Bd4 0-1
2024.01.14 1000GM NY Winter GMB
676933 GM Koustav, Chatterjee (2546) FM Nakada, Akira (2374) 1-0
1.e4 c6 2.d4 d5 3.e5 c5 4.c3 Nc6 5.Be2 e6 6.Nf3 Bd7 7.O-O Nge7 8.dxc5 Ng6 9.Be3 Ngxe5 10.Nd4 Nxd4 11.cxd4 Nc6 12.a3 a5 13.Nc3 b6 14.Na4 bxc5 15.dxc5 Be7 16.Nb6 Rb8 17.Qa4 d4 18.Bb5 dxe3 19.Bxc6 exf2+ 20.Kh1 Bxc6 21.Qxc6+ Kf8 22.Rad1 1-0
2024.01.14 1000GM NY Winter GMB
676935 IM Griffith, Kyron (2367) GM Koustav, Chatterjee (2546) 1/2-1/2
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.Nf3 Ng6 11.O-O Be7 12.c4 dxe4 13.Bxe4 f5 14.Bc2 e5 15.c5 e4 16.Nd4 O-O 17.f3 Kh8 18.Nb3 a5 19.fxe4 a4 20.Nd2 f4 21.Kh1 Ne5 22.b4 axb3 23.Bxb3 Bxc5 24.Bb2 Bd6 25.Nf3 Bg4 26.Rac1 Rac8 1/2-1/2
2024.01.13 1000GM NY Winter GMB
676923 IM Lee, Alice (2379) GM Koustav, Chatterjee (2546) 0-1
1.Nf3 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.d4 O-O 6.Be2 e5 7.O-O Nc6 8.Be3 Ng4 9.Bg5 f6 10.Bc1 f5 11.exf5 gxf5 12.dxe5 dxe5 13.Qd5+ Kh8 14.Qxd8 Nxd8 15.Nb5 c6 16.Nd6 e4 17.Ng5 Ne5 18.Be3 h6 19.Nh3 Ne6 20.Nf4 Nxf4 21.Bxf4 Ng6 22.Bd2 Be6 23.Rad1 b6 24.Bc1 Rad8 25.Nb7 Rb8 26.Nd6 Rfd8 27.g4 Nh4 28.Bf4 fxg4 29.Bxg4 Rf8 30.Bxe6 Rxf4 31.Nf7+ Kh7 32.Nd8 Nf3+ 33.Kg2 Ne5 34.Bh3 Bf6 35.Ne6 Rf3 36.Rd6 Be7 0-1
2024.01.13 1000GM NY Winter GMB
676924 GM Koustav, Chatterjee (2546) FM Adewumi, Tanitoluwa (2280) 1/2-1/2
1.e4 c5 2.Nf3 e6 3.b3 Nc6 4.Bb2 d5 5.Bb5 Nf6 6.exd5 exd5 7.Qe2+ Be7 8.O-O O-O 9.Re1 Bd6 10.Bxc6 bxc6 11.d3 Bg4 12.Nbd2 Bf4 13.Qf1 Qa5 14.c3 Rfe8 15.h3 Rxe1 16.Qxe1 Re8 17.Qf1 Bxd2 18.Nxd2 Be2 19.Qb1 Nh5 20.Nf1 Nf4 21.Ng3 Bxd3 22.Qd1 c4 23.Qg4 Qc7 24.Ba3 Qe5 25.Qd7 h6 26.Bc5 a6 27.Bd4 Qe6 28.Qc7 g5 29.b4 Bg6 30.Be3 Qf6 31.Bd4 Qe6 32.Be3 d4 33.Bxd4 Qd5 34.f3 h5 35.Kh2 h4 36.Nf1 Ne6 37.Qe5 Qxe5+ 38.Bxe5 Nf4 39.Bxf4 gxf4 40.Nd2 Bd3 41.Ne4 Bxe4 42.fxe4 Rxe4 43.Rd1 1/2-1/2
2024.01.12 1000GM NY Winter GMB
676912 GM Nagy, Ga1 (2450) GM Koustav, Chatterjee (2546) 1/2-1/2
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 1/2-1/2
2024.01.12 1000GM NY Winter GMB
676915 GM Koustav, Chatterjee (2546) GM Paragua, M (2448) 1/2-1/2
1.e4 c5 2.Nf3 d6 3.Bb5+ Bd7 4.c4 g6 5.O-O Bg7 6.Nc3 Nf6 7.Bxd7+ Nfxd7 8.d3 Nc6 9.Rb1 O-O 10.Bd2 a6 11.a3 Rb8 12.b4 cxb4 13.axb4 b5 14.cxb5 axb5 15.Ne2 Nb6 16.d4 e6 17.Bf4 Qd7 18.Qd3 Nc4 19.Nd2 Rbc8 20.d5 N6e5 1/2-1/2
2024.01.11 1000GM NY Winter GMB
676906 GM Koustav, Chatterjee (2546) FM Graif, William (2302) 1-0
1.e4 c5 2.Nf3 Nc6 3.Bb5 g6 4.O-O Bg7 5.c3 Nf6 6.Re1 O-O 7.d4 d5 8.e5 Ne4 9.Bxc6 bxc6 10.Be3 Rb8 11.Qc1 cxd4 12.cxd4 Bf5 13.Nc3 f6 14.Nxe4 dxe4 15.Nd2 Qd5 16.Nc4 a5 17.Qc3 Rb4 18.Rac1 Rfb8 19.Bf4 R8b7 20.a3 R4b5 21.exf6 Bxf6 22.Be5 Bg5 23.Ne3 Bxe3 24.Qxe3 e6 25.h3 h5 26.Qg5 Rf7 27.g4 hxg4 28.hxg4 e3 29.Rxe3 Rh7 30.f3 Rxb2 31.gxf5 1-0
2024.01.07 Pan-Am Intercollegiate
691848 GM Liang, Awonder (2640) GM Koustav, Chatterjee (2546) 1/2-1/2
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Bxc6 dxc6 7.Re1 Nd7 8.d4 exd4 9.Qxd4 O-O 10.Bf4 Nc5 11.Qe3 Ne6 12.Bg3 Bd7 13.Nc3 Qe8 14.Rad1 Rd8 15.Ne5 Bc5 16.Qc1 Bc8 17.Nd3 Ba7 18.Kh1 f6 19.f4 Nc5 20.f5 Nxd3 21.cxd3 Qf7 22.a3 Rd7 23.Ne2 Rfd8 24.Nf4 Re7 25.Qc2 g6 26.fxg6 hxg6 27.Rf1 g5 28.Ne2 f5 29.exf5 Bxf5 30.Qd2 Qg6 31.d4 c5 32.d5 c4 33.Rde1 Rde8 34.d6 cxd6 35.Qd5+ Qf7 36.Qd2 Qg6 37.Bxd6 Re6 38.Ng3 Bd3 39.Rxe6 Rxe6 40.Rf8+ Kh7 41.Bb4 Bd4 42.Rd8 Qg7 43.Qd1 g4 44.Nf5 Bxf5 45.Rxd4 Re4 46.Rd8 Qxb2 47.h3 Qe2 48.Qa1 Re8 49.Rxe8 Qxe8 50.Qf6 Qe6 51.Qh4+ Kg6 52.Qg3 Kf7 53.h4 Kg6 54.Kh2 Qf6 55.Be1 b5 56.Bb4 Bd7 57.Bc3 Qe7 58.Bd2 Bf5 59.Bg5 Qe6 60.Qc7 Qd7 61.Qc5 Qe6 62.Bf4 Qf6 63.Kg3 Qc3+ 64.Be3 Qe1+ 65.Kf4 Qf1+ 66.Ke5 Qa1+ 67.Kf4 Qf1+ 68.Kg3 Qe1+ 69.Bf2 Qc3+ 70.Kh2 Qf6 71.Be1 c3 72.Bxc3 Qxh4+ 73.Kg1 Qd8 74.Qc6+ Kf7 75.Be5 Qe7 76.Qd5+ Qe6 77.Qb7+ Qe7 78.Qd5+ Qe6 79.Qd4 Qc4 1/2-1/2
2024.01.06 Pan-Am Intercollegiate
691827 GM Gazik, Viktor (2567) GM Koustav, Chatterjee (2546) 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 Bg4 9.c3 Na5 10.Bc2 c5 11.h3 Bh5 12.Bc1 O-O 13.Nbd2 Nc6 14.Re1 d5 15.Qe2 d4 16.g4 Bg6 17.Nf1 Nd7 18.Bb3 Nb6 19.cxd4 Nxd4 20.Nxd4 cxd4 21.f4 exf4 22.Bxf4 Bg5 23.Qd2 Bxf4 24.Qxf4 Qb8 25.Qxb8 Raxb8 26.Nh2 a5 27.Rec1 a4 28.Bd1 f6 29.Nf3 Rfd8 30.Rc7 Bf7 31.a3 Nd7 32.Rac1 Nf8 33.Kf1 Ne6 34.Ra7 Ra8 35.Rxa8 Rxa8 36.Ke1 Nf4 37.Kd2 Rd8 38.h4 Be6 39.g5 fxg5 40.Nxg5 Bd7 41.Rc5 h6 42.Nf3 Be8 43.Ne5 Rd6 44.Bg4 h5 45.Bf5 Kf8 46.Rc8 Ke7 47.Rc7+ Kf8 48.Rc8 Ke7 49.Nf3 b4 50.axb4 g6 51.e5 Rb6 52.Be4 Rxb4 53.Kc2 Bb5 54.Rc7+ Ke8 55.Rc8+ Ke7 56.Rc7+ Ke8 57.Ng5 Rb3 58.e6 Bxd3+ 59.Bxd3 Nxd3 60.Ne4 Nb4+ 61.Kc1 Re3 62.Nd6+ Kf8 63.Rf7+ Kg8 64.e7 1-0
2023.12.30 33rd North American Open
698274 GM Koustav, Chatterjee (2546) GM Mikaelyan, A (2519) 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.Nf3 Qc7 10.Be2 b6 11.Bb2 Bb7 12.O-O Nbd7 13.c4 Rac8 14.Rc1 Rfd8 15.Re1 cxd4 16.exd4 Nc5 17.Ne5 Ba8 18.Bf1 Qb8 19.Re3 Nce4 20.Bd3 Qb7 21.Ng4 Nxg4 22.Qxg4 f5 23.Qh4 Qf7 24.f3 Nd6 25.d5 Re8 26.Rce1 b5 27.Rxe6 bxc4 28.Re7 Rxe7 29.Rxe7 cxd3 30.Rxf7 Kxf7 31.Qd4 d2 32.Qxg7+ Ke8 33.Qg8+ 1-0
2023.12.29 33rd North American Open
698239 GM Koustav, Chatterjee (2546) FM Furfine, Jacob (2308) 1-0
1.Nf3 Nf6 2.c4 e6 3.Nc3 d5 4.e3 Bd6 5.b3 O-O 6.Bb2 c5 7.cxd5 exd5 8.d4 Nc6 9.Be2 Re8 10.dxc5 Bxc5 11.O-O Bb6 12.Na4 Bc7 13.Rc1 Ne4 14.Nc3 Nxc3 15.Bxc3 Qd6 16.g3 Bh3 17.Re1 Rad8 18.Nd4 Bb6 19.Qd2 Re4 20.Nxc6 bxc6 21.Bf3 Ree8 22.b4 Bf5 23.a4 a5 24.bxa5 Ba7 25.Bb4 c5 26.Ba3 Qc6 27.Qd4 Be4 28.Bxc5 Bxf3 29.Bxa7 Qd7 30.Qf4 Bh5 31.Rc7 Qh3 32.Bd4 h6 33.f3 Re6 34.g4 Bg6 35.Rec1 Kh7 36.Rxf7 Bxf7 37.Qxf7 Rg6 38.Rc7 Rg8 39.Qf5 Qh4 40.Rc6 Qe1+ 41.Kg2 Qd2+ 42.Kh3 1-0
2023.12.29 33rd North American Open
698253 GM Zierk, S (2475) GM Koustav, Chatterjee (2546) 0-1
1.Nf3 d5 2.g3 Nd7 3.Bg2 e5 4.d3 Ngf6 5.O-O Bd6 6.c4 c6 7.cxd5 cxd5 8.Nc3 O-O 9.Nd2 Nb6 10.a4 Be6 11.d4 e4 12.a5 Nbd7 13.f3 exf3 14.exf3 Re8 15.Re1 a6 16.Nf1 Nb8 17.Bg5 Nc6 18.f4 h6 19.Bh4 Be7 20.Ne3 Qd7 21.Na4 Qd6 22.f5 Bd7 23.Nc5 Qc7 24.Bxd5 Rad8 25.Rc1 Bc8 26.Bxf6 Bxf6 27.Ne4 Qe7 28.Kg2 Bxd4 29.Rxc6 bxc6 30.Qxd4 cxd5 31.Nxd5 Qb7 32.Nef6+ gxf6 33.Rxe8+ Rxe8 34.Kf2 Bxf5 35.Nxf6+ Kf8 36.Nd5 Kg8 37.Nf6+ Kf8 38.Nd5 f6 39.Nxf6 Rb8 40.Qc5+ Kf7 41.Qxf5 Qxb2+ 42.Kg1 Qb1+ 0-1
2023.12.28 33rd North American Open
698203 GM Koustav, Chatterjee (2546) FM Tang, Zoey (2284) 1-0
1.Nf3 d5 2.e3 c5 3.b3 Nc6 4.Bb2 f6 5.d4 cxd4 6.exd4 Bg4 7.Be2 e6 8.Nbd2 Bd6 9.O-O Nge7 10.Re1 O-O 11.Nf1 Bh5 12.Ne3 Rc8 13.a3 Bf7 14.c4 dxc4 15.bxc4 e5 16.c5 Bb8 17.dxe5 Nxe5 18.Nxe5 Bxe5 19.Bxe5 fxe5 20.Rb1 Qc7 21.Qa4 Nd5 22.Qxa7 Nxe3 23.fxe3 Bd5 24.e4 Bc6 25.Bc4+ Kh8 26.Qb6 Qe7 27.Bd5 Qh4 28.Qb2 Bxd5 29.exd5 Rxc5 30.Qxe5 Qf2+ 31.Kh1 Rc2 32.Qe4 h6 33.h3 Rd2 34.Rbd1 Rf4 35.Qg6 Rxd1 36.Rxd1 Qe2 37.Rc1 Rf1+ 38.Rxf1 Qxf1+ 39.Kh2 Qf4+ 40.Qg3 Qd4 41.Qd6 Kh7 42.Qe6 Qf4+ 43.Kg1 Qc1+ 44.Kf2 Qf4+ 45.Ke2 Qg3 46.Qf5+ Kh8 47.Qf8+ Kh7 48.Qf3 Qe5+ 49.Kd3 Qb2 50.Ke4 Qc2+ 51.Ke5 Qc7+ 52.d6 Qa5+ 53.Ke6 Qe1+ 54.Kf7 Qb1 55.d7 Qg6+ 56.Ke7 Qg5+ 57.Ke6 Qd8 58.Qe4+ Kh8 59.Qf5 Qb6+ 60.Kf7 Qd4 61.Qe6 Qf4+ 62.Ke8 Qa4 63.g3 Qb5 64.g4 Qa4 65.h4 Qb5 66.Kf7 Qf1+ 67.Ke7 1-0
2023.12.28 33rd North American Open
698220 IM Macovei, Andrei (2460) GM Koustav, Chatterjee (2546) 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.a4 Rb8 9.axb5 axb5 10.c3 d6 11.d4 exd4 12.cxd4 d5 13.e5 Ne4 14.Nc3 Nxc3 15.bxc3 Bf5 16.Bc2 Qd7 17.Bxf5 Qxf5 18.Ra6 Nd8 19.Qb3 Qd3 20.Qxd5 b4 21.Ra7 Ne6 22.cxb4 Bxb4 23.Qe4 Qxe4 24.Rxe4 Rfd8 25.g3 Bc3 26.Be3 Rb4 27.Ng5 Nxg5 28.Bxg5 Rc8 29.Be3 c5 30.Rd7 Re8 31.Rf4 cxd4 32.Bxd4 g5 33.Bxc3 Rb1+ 34.Kg2 gxf4 35.gxf4 Rbb8 36.Ba5 Ra8 37.Rd5 h5 38.Kf3 Kh7 39.Ke4 Rg8 40.Kf5 Rg2 41.h4 Rxf2 42.Bd8 Rfa2 43.Kg5 R8a4 44.Bf6 Rg2+ 45.Kf5 Rg6 46.Bg5 Kg7 47.Rd7 Raa6 48.Rd5 Rac6 49.Bf6+ Rcxf6+ 50.exf6+ Rxf6+ 51.Kg5 Ra6 52.Kxh5 Rb6 53.Kg4 Ra6 54.Rg5+ Kh7 55.h5 Rb6 56.Rf5 Kg7 57.Kg5 Ra6 1/2-1/2
2023.12.27 33rd North American Open
698182 GM Bitoon, R (2348) GM Koustav, Chatterjee (2546) 1-0
1.c4 Nf6 2.Nc3 e5 3.g3 Bb4 4.Bg2 O-O 5.e4 Bxc3 6.dxc3 d6 7.Qe2 a6 8.Nf3 b5 9.O-O bxc4 10.Qxc4 a5 11.Rd1 Nbd7 12.Qe2 Bb7 13.Nh4 Ra6 14.Nf5 Qa8 15.f3 g6 16.Nh6+ Kg7 17.Bh3 Nc5 18.Be3 Ne6 19.Bxe6 fxe6 20.Bg5 Rb6 21.Be3 Ba6 22.Qg2 Rb7 23.Rd2 Qe8 24.Re1 a4 25.Qh3 Bc4 26.a3 Rb3 27.Rf2 Rb5 28.Qh4 Nd7 29.Ng4 Rf7 30.Nh6 Rf8 31.Ng4 Kh8 32.Bh6 Rf7 33.Rd1 Rb8 34.Bg5 Qf8 35.Kg2 h5 36.Bh6 Qc8 37.Bg5 Nc5 38.Nh6 Rd7 39.g4 Qe8 40.gxh5 gxh5 41.Kh1 Nd3 42.Rg2 Rxb2 43.Bd2 Nf4 44.Qf6+ Kh7 45.Rg8 Qxg8 46.Nxg8 Rg7 47.Bxf4 Be2 48.Bxe5 1-0
2023.11.26 US Chess Masters 2023
735806 GM Daggupati, Balaji (2477) GM Koustav, Chatterjee (2547) 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.a3 Na5 11.Ba2 c5 12.Be3 Re8 13.Nc3 c4 14.b4 cxb3 15.cxb3 b4 16.axb4 Nc6 17.d4 Nxb4 18.Bb1 Rc8 19.Qd2 Qc7 20.Rc1 exd4 21.Bxd4 Qb8 22.Ra4 Ba8 23.Re1 Nd7 24.Nd1 d5 25.e5 Nf8 26.Bc3 Nc6 27.e6 f6 28.Rg4 Kh8 29.Rh4 d4 30.Nxd4 Nxd4 31.Qxd4 Qxb3 32.Bxh7 Nxh7 33.Qd3 f5 34.Bxg7+ Kxg7 35.Rxh7+ Kxh7 36.Qxb3 Rg8 37.Ne3 Bc5 38.g3 f4 39.Ng4 fxg3 40.Qxg3 Be7 41.Kh2 Rcf8 42.Re5 Rg6 43.Rh5+ Kg8 44.Nh6+ Kg7 45.Qc3+ Rgf6 46.Nf5+ Kg6 47.Qg3+ Kxh5 48.Qg4# 1-0
2023.11.26 US Chess Masters 2023
735835 GM Koustav, Chatterjee (2547) FM Putnam, Liam (2332) 1-0
1.Nf3 d5 2.g3 g6 3.Bg2 Bg7 4.d4 c6 5.O-O Nf6 6.b3 O-O 7.c4 a5 8.Nc3 Ne4 9.Bb2 Bf5 10.e3 Nxc3 11.Bxc3 Be4 12.Qe2 a4 13.Bh3 axb3 14.axb3 Rxa1 15.Rxa1 c5 16.Nd2 Nc6 17.Nxe4 dxe4 18.Rd1 cxd4 19.exd4 Bxd4 20.Bxd4 Nxd4 21.Qxe4 e5 22.Bg2 Qd6 23.Re1 Nc6 24.Qe3 Qb4 25.Rd1 Qa5 26.h4 Rd8 27.Rxd8+ Nxd8 28.Bd5 Nc6 29.Qf3 Qc7 30.Qf6 Na5 31.c5 Nc6 32.h5 gxh5 33.Qg5+ Kf8 34.Qh6+ Kg8 35.Be4 Nd8 36.Bxh7+ Kh8 37.Be4+ Kg8 38.b4 Nc6 39.b5 Nd4 40.b6 1-0
2023.11.25 US Chess Masters 2023
735755 GM Molner, M (2461) GM Koustav, Chatterjee (2547) 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.Bd2 O-O 9.h3 Bb7 10.Re1 Qd7 11.a3 Nd8 12.c4 bxc4 13.Bxc4 a5 14.Nc3 Ne6 15.Nd5 a4 16.Rc1 Rfb8 17.Be3 Nxd5 18.exd5 Nf8 19.d4 Ng6 20.Qd3 Bc8 21.Bd2 f6 22.Bb4 Bd8 23.Qe3 Qf7 24.Kh2 Bb7 25.Red1 h6 26.g3 Kh8 27.Kg2 Ne7 28.dxe5 fxe5 29.Qe4 Ng8 30.Qd3 Nf6 31.Nh4 e4 32.Qd4 Qh5 33.Bc3 g5 34.g4 Qe8 35.Nf5 Kh7 36.Re1 Ba6 37.Bxa6 Rxa6 38.Ng3 Qf7 39.Qc4 Ra7 40.Rcd1 Be7 41.Rxe4 Rf8 42.Re2 Bd8 43.Nf5 Nh5 44.Re6 Nf6 45.Rde1 Qg6 46.Qd4 Rb7 47.Ne7 Bxe7 48.Rxe7+ Kg8 49.R1e6 c5 50.Rxf6 1/2-1/2
2023.11.25 US Chess Masters 2023
735790 GM Koustav, Chatterjee (2547) FM Lee, Alice (2406) 1-0
1.Nf3 d5 2.e3 Nf6 3.c4 dxc4 4.Bxc4 e6 5.Nc3 a6 6.O-O c5 7.d4 b5 8.Bb3 Bb7 9.e4 c4 10.Bc2 Nbd7 11.a3 Be7 12.Qe2 O-O 13.e5 Nd5 14.Qe4 g6 15.Qg4 Qb6 16.Bh6 Rfe8 17.Ng5 a5 18.Rfe1 Nxc3 19.bxc3 b4 20.Rad1 b3 21.Bb1 Qc6 22.d5 exd5 23.Nxf7 Bf8 24.e6 Nf6 25.Qg5 Ne4 26.Bxe4 Qxe6 27.Bxf8 Qxf7 28.Bh6 dxe4 29.Rd6 Ra6 30.Rd8 Re6 31.Red1 e3 32.fxe3 Qf5 33.Qg3 Qe5 34.Qf2 Qf5 35.Qg3 Qe5 36.Qf2 Qf5 37.Qd2 Qc2 38.Rf1 1-0
2023.11.24 US Chess Masters 2023
735716 IM Juksta, Karolis (2392) GM Koustav, Chatterjee (2547) 1/2-1/2
1.d4 Nf6 2.c4 e6 3.Nc3 d5 4.cxd5 exd5 5.Bg5 c6 6.e3 Bf5 7.Qf3 Bg6 8.Bxf6 Qxf6 9.Qxf6 gxf6 10.Nf3 1/2-1/2
2023.11.24 US Chess Masters 2023
735739 GM Koustav, Chatterjee (2547) IM Hilby, Craig (2402) 1-0
1.d4 d5 2.c4 e6 3.Nc3 c5 4.cxd5 exd5 5.Nf3 Nf6 6.e3 Nc6 7.Bb5 cxd4 8.Nxd4 Bd7 9.O-O Be7 10.Nf3 a6 11.Bxc6 bxc6 12.b3 O-O 13.Bb2 Bg4 14.h3 Bh5 15.Rc1 Rc8 16.Ne2 Bxf3 17.gxf3 Qd7 18.Kg2 Ne8 19.Qd3 a5 20.Rc2 Nd6 21.Ng3 Rfd8 22.Rfc1 Bf8 23.Qd4 Nb5 24.Qg4 c5 25.Nh5 Rc6 26.Qxd7 Rxd7 27.Nf4 a4 28.bxa4 Nc7 29.Nd3 Rd8 30.Nxc5 Na6 31.Nd3 Rxc2 32.Rxc2 Ra8 33.a3 f6 34.Rc6 Kf7 35.a5 Ke8 36.Rb6 Nc7 37.a4 Rxa5 38.Rb8+ Kf7 39.Rb7 Bd6 40.Bd4 Rxa4 41.Bc5 Ke6 42.Rb6 Ra6 43.Bxd6 Rxb6 44.Bxc7 Rb5 45.Bg3 Ra5 46.Nf4+ Kf7 47.Ne2 Rb5 48.Nd4 Rb1 49.f4 Kg6 50.f5+ Kf7 51.Kf3 Rb4 52.h4 Ra4 53.Bd6 Ra6 54.Bc7 Ra4 55.Bg3 Rb4 56.Nc6 Ra4 57.Nd8+ Ke7 58.Ne6 Kf7 59.h5 Ra1 60.Nf4 Rh1 61.Kg4 Rd1 62.Bh4 d4 63.Kf3 dxe3 64.fxe3 h6 65.e4 Ra1 66.Bf2 Ra3+ 67.Be3 Ra1 68.Bd4 Rd1 69.Ke3 Rh1 70.Bc5 Re1+ 71.Kd4 Rd1+ 72.Kc4 Rh1 73.Kd5 Rd1+ 74.Bd4 Rf1 75.Be3 Rd1+ 76.Kc4 Re1 77.Kd3 Rh1 78.Bc5 Rd1+ 79.Ke2 Rh1 80.Bd4 Rb1 81.Kf3 Rf1+ 82.Bf2 Rh1 83.Kg4 Rf1 84.Kg3 Rh1 85.Kg2 Ra1 86.Ne6 Ra2 87.Kf3 Ra3+ 88.Kg4 Ra4 89.Bd4 Rb4 90.Kf4 Rb1 91.e5 Rf1+ 92.Kg4 fxe5 93.Bxe5 Rg1+ 94.Kf4 Rf1+ 95.Ke4 Re1+ 96.Kd5 Rd1+ 97.Bd4 Rh1 98.Nxg7 Rh4 99.Be5 Rh1 100.f6 Rh3 101.Nf5 Rxh5 102.Nd6+ Kf8 103.Ke6 Rh1 104.Nf5 Re1 105.Ne7 Rg1 106.f7 Rg5 107.Kf6 1-0
2023.11.23 US Chess Masters 2023
735674 IM Ippolito, D (2356) GM Koustav, Chatterjee (2547) 1/2-1/2
1.d4 Nf6 2.c4 e6 3.g3 c5 4.d5 exd5 5.cxd5 d6 6.Nc3 g6 7.Bg2 Bg7 8.Nf3 O-O 9.O-O Re8 10.Re1 a6 11.a4 Nbd7 12.Qc2 Ng4 13.h3 Nge5 14.Nd2 f5 15.f4 Nf7 16.Nc4 Nf6 17.a5 Bd7 18.b3 Qc7 19.Bb2 Re7 20.e4 fxe4 21.Nxe4 Nxe4 22.Bxg7 Kxg7 23.Rxe4 Rxe4 24.Qxe4 Re8 25.Qc2 Qd8 26.Qc3+ Qf6 27.Qxf6+ Kxf6 28.Kf2 Bf5 29.Ne3 Bd7 30.Re1 1/2-1/2
2023.11.23 US Chess Masters 2023
735704 GM Koustav, Chatterjee (2547) FM Kunka, Harshid (2336) 1-0
1.Nf3 d5 2.e3 Nf6 3.c4 e6 4.Nc3 Nbd7 5.b3 b6 6.Bb2 Bb7 7.cxd5 exd5 8.Ne2 Bd6 9.Ng3 g6 10.Be2 Qe7 11.Rc1 a6 12.Rc2 O-O 13.O-O Ne4 14.Qa1 f6 15.Rfc1 Rac8 16.Nf1 Ne5 17.Ne1 Nd7 18.d3 Nec5 19.Nd2 Ne6 20.Ndf3 Rf7 21.Bf1 Ng7 22.d4 Nf8 23.Nd3 a5 24.g3 g5 25.Bg2 Ng6 26.Nd2 g4 27.Nb1 c6 28.Nc3 Rff8 29.Na4 Bc7 30.Rxc6 Bxc6 31.Rxc6 Qd7 32.Nxb6 Bxb6 33.Rxb6 Rc2 34.Qd1 Rfc8 35.Nc5 Qf5 36.Rxf6 Qxf6 37.Bxd5+ Kh8 38.Qxc2 Ne7 39.Be4 Qd6 40.Qc3 Nd5 41.Qxa5 Nf6 42.Bg2 h5 43.e4 Nd7 44.Nxd7 Qxd7 45.Qd2 Kg8 46.d5 Qa7 47.Bf1 Qxa2 48.Qd4 Rc7 49.d6 Rd7 50.Bb5 h4 51.gxh4 1-0
2023.11.22 US Chess Masters 2023
735655 GM Koustav, Chatterjee (2547) WGM Paramzina, A (2183) 1-0
1.d4 Nf6 2.Nf3 g6 3.e3 Bg7 4.c4 d5 5.cxd5 Nxd5 6.e4 Nb6 7.a4 a5 8.Be3 O-O 9.Be2 Bg4 10.Nbd2 f5 11.Qb3+ Kh8 12.Ng5 Bxe2 13.Kxe2 f4 14.Ne6 Qc8 15.Bxf4 Rxf4 16.Nxf4 Nc6 17.Nf3 Qg4 18.Ne6 Qxe4+ 19.Kf1 Nb4 20.h4 N6d5 21.Re1 Qf5 22.h5 Nd3 23.hxg6 Nxe1 24.Rxh7+ Kg8 25.Rxg7+ Kh8 26.Rh7+ Kg8 27.Nf4 1-0
2023.09.17 Texas Collegiate Finals
815935 GM Koustav, Chatterjee (2546) GM Sorokin, Aleksey (2547) 1/2-1/2
1.Nf3 Nf6 2.c4 c5 3.Nc3 e6 4.g3 Nc6 5.Bg2 Qb6 6.O-O Be7 7.b3 d5 8.cxd5 Nxd5 9.Bb2 Nxc3 10.dxc3 O-O 11.Qc2 e5 12.Nd2 Be6 13.Nc4 Qa6 14.Bxc6 bxc6 15.Nxe5 f6 16.Nf3 c4 17.Nd4 Bh3 18.Rfd1 Rfe8 19.Nf5 Bf8 20.Ne3 cxb3 21.axb3 Qb7 22.c4 Rab8 23.Rd3 Bc5 24.Bd4 Bxd4 25.Rxd4 Qxb3 26.Qxb3 Rxb3 27.Rh4 Bc8 28.Rxa7 c5 29.Nd5 Bb7 30.e3 Ra8 31.Rxa8+ Bxa8 32.Re4 Bxd5 33.cxd5 Rd3 1/2-1/2
2023.09.17 Texas Collegiate Finals
815943 IM Beradze, I (2502) GM Koustav, Chatterjee (2546) 1/2-1/2
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qc2 d5 5.Bg5 h6 6.Bxf6 Qxf6 7.Nf3 dxc4 8.e3 c5 9.Bxc4 cxd4 10.exd4 O-O 11.O-O Nc6 12.d5 Na5 13.Ne4 Qe7 14.a3 Nxc4 15.Qxc4 exd5 16.Qxd5 Rd8 17.Qc4 Ba5 18.Nc5 Bb6 19.Rac1 Bf5 20.Rfe1 Qf6 21.Qb4 Rab8 22.Na4 Rd6 23.Nxb6 Rxb6 24.Qf4 Rd8 25.b4 Be6 26.Qxf6 gxf6 27.Rc3 a5 28.bxa5 Rb5 29.h3 1/2-1/2
2023.09.16 Texas Collegiate Finals
815907 GM Koustav, Chatterjee (2546) Moor, Nathaniel Philip (2082) 1-0
1.Nf3 d5 2.g3 Nc6 3.d4 Bf5 4.Bg2 Nb4 5.Na3 e6 6.O-O h5 7.c3 Nc6 8.Nc2 Be7 9.h4 Nf6 10.Ng5 Ne4 11.Nxe4 Bxe4 12.f3 Bh7 13.e4 Qd7 14.Ne3 O-O-O 15.b4 Rhg8 16.exd5 exd5 17.Kh2 g5 18.hxg5 Rxg5 19.f4 Rg7 20.Bh3 f5 21.Qxh5 Bg6 22.Qxf5 Bxf5 23.Bxf5 Rdg8 24.Bxd7+ Kxd7 25.Nf5 Rf7 26.Ne3 Rfg7 27.Rf3 Bxb4 28.Nxd5 Be7 29.Be3 Na5 30.Bf2 Nc4 31.Re1 Bd8 32.Nb4 Nd6 33.Nd3 Bf6 34.Nc5+ Kc8 35.Ne4 Rh8+ 36.Kg2 Nf5 37.Rh1 Bh4 38.Ng5 Bxg5 39.Rxh8+ Bd8 40.Kh3 Nd6 41.g4 Kd7 42.Bh4 Bxh4 43.Kxh4 Re7 44.f5 Re1 45.Rh7+ Kc6 46.Kg5 Ne4+ 47.Kg6 Rg1 48.Rh4 Nd2 49.Rf4 1-0
2023.09.16 Texas Collegiate Finals
815919 GM Gazik, Viktor (2547) GM Koustav, Chatterjee (2546) 0-1
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.Nc3 Be7 6.O-O b5 7.Bb3 d6 8.a4 Bg4 9.axb5 Nd4 10.bxa6 Qc8 11.Ba4+ Kf8 12.Nb5 Nxf3+ 13.gxf3 Bh5 14.d4 Rxa6 15.Qd3 Qh3 16.Ra3 Rxa4 17.Rxa4 Bxf3 18.Ra8+ Ne8 19.Qxf3 Qxf3 20.Nxc7 Bd8 21.Rxd8 Ke7 22.Rb8 Kd7 23.Nb5 Qg4+ 24.Kh1 Qh3 25.Rg1 Qf3+ 26.Rg2 Qxe4 27.dxe5 dxe5 28.Be3 f5 29.Nc3 Qf3 30.Kg1 f4 31.Bb6 Rf8 32.Rg5 Rf5 33.Rd8+ Kc6 0-1
2023.04.16 II Menorca Open 2023
982229 GM Niemann, Hans Moke (2706) IM Koustav, Chatterjee (2520) 1/2-1/2
1.d4 Nf6 2.c4 e6 3.g3 c5 4.d5 exd5 5.cxd5 d6 6.Nc3 g6 7.Nf3 Bg7 8.Bg2 O-O 9.O-O Re8 10.Re1 a6 11.a4 Nbd7 12.Bf4 Ng4 13.Bg5 Qb6 14.Qc2 c4 15.Rf1 Nc5 16.a5 Qb4 17.Bd2 Bf5 18.e4 Bd7 19.h3 Ne5 20.Nxe5 Bxe5 21.Ra3 Nb3 22.Be3 1/2-1/2
2023.04.15 II Menorca Open 2023
982207 IM Koustav, Chatterjee (2520) GM Xu, Yi (2505) 1-0
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Bd3 d5 6.a3 Bxc3+ 7.bxc3 dxc4 1-0
2023.04.15 II Menorca Open 2023
982218 IM Koustav, Chatterjee (2520) GM Fier, A (2599) 1-0
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 O-O 5.Nf3 d6 6.Bd3 c5 7.d5 e6 8.h3 exd5 9.exd5 Re8+ 10.Be3 Rxe3+ 11.fxe3 Qe7 12.e4 Nbd7 13.O-O Nh5 14.Qd2 Ne5 15.Nxe5 Bxe5 16.Ne2 Bd7 17.Rf3 Qh4 18.Qe1 Qg5 19.Qf2 Be8 20.Rf1 Qd2 21.Kh1 b6 22.Qh4 f6 23.g4 g5 24.Qf2 Nf4 25.Nxf4 Qxf2 26.R1xf2 gxf4 27.Rxf4 Bxf4 28.Rxf4 Kg7 29.h4 h6 30.Kg2 Bd7 31.Kg3 a6 32.Rf1 b5 33.Kf4 b4 34.Rg1 a5 35.Be2 a4 36.a3 Rb8 37.g5 hxg5+ 38.hxg5 bxa3 39.bxa3 Rb2 40.gxf6+ Kxf6 41.Bh5 Rf2+ 42.Ke3 Ra2 43.Kf4 Rf2+ 44.Bf3 Be8 45.Rh1 Kg7 46.Rg1+ Kf6 47.Rh1 Kg7 48.Rh3 Bg6 49.e5 Rc2 50.exd6 Kf6 51.Rh6 Rxc4+ 52.Kg3 1-0
2023.04.13 II Menorca Open 2023
982161 IM Koustav, Chatterjee (2520) GM Gukesh, D (2730) 0-1
1.d4 Nf6 2.c4 e6 3.Nf3 d5 4.g3 Bb4+ 5.Bd2 Be7 6.Bg2 O-O 7.O-O c6 8.Qc2 Nbd7 9.Rd1 a5 10.b3 b5 11.Bf4 Ba6 12.c5 Nh5 13.Be5 Rc8 14.Bh3 f5 15.Bf1 g5 16.h3 g4 17.hxg4 fxg4 18.Nh2 Bxc5 19.e3 Nxe5 20.Qxc5 Nf3+ 21.Nxf3 gxf3 22.Bh3 Rc7 23.Bxe6+ Kh8 24.Bg4 Nxg3 25.fxg3 Rg7 26.Kf2 Rxg4 27.Rg1 Rfg8 28.Nd2 Qc7 29.Nxf3 Qf7 30.Raf1 b4 31.Rg2 Qf5 0-1
2023.04.09 Fagernes GM Open 2023
991270 GM Ter Sahakyan, S (2613) IM Koustav, Chatterjee (2520) 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.a4 Bb7 9.d3 d6 10.Bd2 Qd7 11.Nc3 Na5 12.Ba2 b4 13.Ne2 c5 14.Ng3 Rab8 15.Nh4 Nxe4 16.dxe4 Bxh4 17.Nf5 Bf6 18.Qg4 Kh8 19.Re3 g6 20.Rh3 Rbd8 21.Rxh7+ Kxh7 22.Qh3+ Kg8 23.Nh6+ Kg7 24.Ng4 Qxg4 25.Qxg4 Bc6 26.Qe2 Bb7 27.Rd1 Nc6 28.Qe3 Rh8 29.Bd5 Rd7 30.Qd3 Ra8 31.Qh3 1-0
2023.04.08 Fagernes GM Open 2023
991225 IM Koustav, Chatterjee (2520) GM Raja, Rithvik R (2472) 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.Nf3 Qc7 10.Be2 b6 11.Bb2 Bb7 12.O-O Nbd7 13.c4 Rfd8 14.Re1 Rac8 15.Bf1 Nf8 16.h3 Ng6 17.a4 Bc6 18.Ra3 Qb7 19.Nd2 Nh4 20.f3 Qc7 21.Qe2 Nf5 22.Qf2 cxd4 23.exd4 Qf4 24.Nb3 h5 25.Bd3 Bb7 26.d5 Ne8 27.a5 b5 28.Nc5 bxc4 29.Bxf5 Rxd5 30.Nxb7 Rd2 31.Bc1 Rxf2 32.Bxf4 Rb2 33.Rb1 c3 34.Bc1 Rxb1 35.Bxb1 c2 36.Bxc2 Rxc2 37.Be3 a6 38.Rd3 Nc7 39.Rd2 1-0
2023.04.07 Fagernes GM Open 2023
991180 IM Koustav, Chatterjee (2520) GM Rozentalis, Eduardas (2504) 1/2-1/2
1.d4 Nf6 2.c4 e6 3.Nf3 Bb4+ 4.Nbd2 b6 5.a3 Bxd2+ 6.Qxd2 O-O 7.e3 d5 8.b4 c5 9.dxc5 bxc5 10.cxd5 exd5 11.bxc5 Ne4 12.Qc2 Qa5+ 13.Bd2 Nxd2 14.Nxd2 Ba6 15.Bxa6 Qxa6 16.Nf3 Nd7 17.Qe2 Qa5+ 18.Qd2 Qxd2+ 19.Kxd2 Nxc5 20.Nd4 Ne4+ 21.Ke2 Rab8 22.Rhc1 Rb2+ 23.Rc2 Rfb8 24.Rc1 g6 25.Nc6 R8b3 26.Nxa7 Nc3+ 27.Kf3 Rxc2 28.Rxc2 d4 29.Rd2 Rxa3 30.Nc6 dxe3 31.Kxe3 Nd5+ 32.Ke4 Nf6+ 33.Kd4 Kg7 34.Ne5 Ra5 35.Nc4 Rd5+ 36.Ke3 Ng4+ 37.Ke2 Rc5 38.Rd4 Ne5 1/2-1/2
2023.04.06 Fagernes GM Open 2023
991131 GM Puranik, A (2599) IM Koustav, Chatterjee (2520) 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.c3 Na5 9.Bc2 c5 10.a4 Bd7 11.d4 Qb8 12.Bg5 Ra7 13.h3 Qc7 14.Nbd2 O-O 15.Be3 cxd4 16.cxd4 Rb7 17.d5 Rc8 18.Bd3 Nc4 19.Rc1 1/2-1/2
2023.04.05 Fagernes GM Open 2023
991041 IM Koustav, Chatterjee (2520) GM Sanal, V (2582) 0-1
1.d4 d5 2.Nf3 Nf6 3.c4 e6 4.g3 Bb4+ 5.Bd2 Bxd2+ 6.Qxd2 O-O 7.Bg2 c6 8.O-O Nbd7 9.Qc2 b6 10.Nbd2 Bb7 11.e4 dxe4 12.Nxe4 c5 13.Nd6 Bc6 14.dxc5 bxc5 15.Rad1 Rb8 16.Qc3 Rb6 17.Rd3 Qb8 18.Rfd1 Rxb2 19.Ng5 Bxg2 20.Kxg2 Rxa2 21.Rf3 Qb2 22.Qxb2 Rxb2 23.Ngxf7 h6 24.h3 e5 25.Kg1 e4 26.Rf5 Rb3 27.Ne5 Nxe5 28.Rxe5 Rd8 29.Rxc5 Rd3 30.Ra1 R8xd6 31.Rc8+ Kh7 32.Rxa7 e3 33.Rcc7 exf2+ 34.Kxf2 Ne4+ 0-1
2023.04.05 Fagernes GM Open 2023
991088 WIM Savitha, Shri B (2411) IM Koustav, Chatterjee (2520) 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.Bd2 O-O 9.h3 Bb7 10.Re1 Qd7 11.a3 Nd8 12.Nc3 Ne6 13.Ne2 c5 14.Ng3 Rfc8 15.Ba2 Bf8 16.Bg5 Nxg5 17.Nxg5 c4 18.Qe2 h6 19.Nf3 Qc7 20.dxc4 bxc4 21.Nd2 c3 22.bxc3 d5 23.exd5 Nxd5 24.Bxd5 Bxd5 25.Qxe5 Qc6 26.Nge4 Ra7 27.c4 Bxc4 28.Nxc4 Qxc4 29.Nd6 Bxd6 30.Qxd6 Qxc2 31.Rab1 Qc6 32.Rb6 Qxd6 33.Rxd6 Rc5 34.Re3 Ra5 35.Rc3 Ra4 36.Rb6 Rd7 37.Rc8+ Kh7 38.Ra8 Rd1+ 39.Kh2 Rd2 40.Raxa6 Rf4 41.Rb3 Rfxf2 42.Rg3 h5 43.Ra4 Kh6 44.h4 Rf1 45.Rc3 Rdd1 46.Kg3 Rh1 47.Ra7 Rd4 48.Rxf7 Rhxh4 49.Rf8 g6 50.Rcf3 Rh1 51.Re8 h4+ 52.Kf2 Rdd1 53.Re2 Ra1 54.Rc3 Kh5 55.Rb3 g5 56.Rd3 Rhf1+ 57.Ke3 Rf4 58.Rc3 Kg4 59.Rb3 Kh5 60.Rc3 Kg4 61.Rb3 Rf5 62.Kd4 Ra5 63.Re4+ Kf5 64.Ree3 g4 65.Rb8 Ra4+ 66.Kd5 Kf4 67.Rc3 Ra5+ 68.Ke6 Re5+ 69.Kf6 Rae1 70.Rb6 R1e3 71.Rb4+ R3e4 72.Rb1 Re6+ 73.Kf7 Re7+ 74.Kf8 Re3 75.Rc4+ R7e4 76.Rc6 Rxa3 77.Rh1 Kg3 78.Rh6 Kxg2 79.R1xh4 Rh3 80.Rxh3 gxh3 81.Rg6+ Kf3 82.Rh6 Kg3 0-1
2023.04.04 Fagernes GM Open 2023
990997 FM Dotzer, Lukas (2416) IM Koustav, Chatterjee (2520) 1-0
1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.e5 b6 5.a3 Bf8 6.f4 c5 7.Nf3 Nc6 8.Be3 Nge7 9.Bd3 c4 10.Be2 Nf5 11.Bf2 h5 12.Qd2 Rb8 13.Nd1 Be7 14.Ne3 g6 15.O-O b5 16.b3 Kf8 17.Nxf5 gxf5 18.Ng5 h4 19.Be3 cxb3 20.cxb3 Na5 21.Bd1 b4 22.a4 Ba6 23.Rf3 Rc8 24.Bf2 Qb6 25.Rh3 f6 26.Nf3 Rc3 27.exf6 Bxf6 28.Ne5 Bxe5 29.fxe5 Rxh3 30.gxh3 Nc6 31.Kh1 Nd8 32.Rc1 Nf7 33.Bf3 Bb7 34.Rc5 a5 35.Qc1 Qa6 36.Qe1 Qd3 37.Bg2 Qxb3 38.Rxa5 Bc6 39.Ra6 Bd7 40.Rb6 Qxa4 41.Rxb4 Qc2 42.Rb7 Be8 43.Be3 f4 44.Bxf4 Rh5 45.Rb1 Qc4 46.Qd1 Rh7 47.Rc1 Qa2 48.Rc2 Qb3 49.Qd2 Rg7 50.Rc1 Rg6 51.Qf2 Bb5 52.Rc8+ Kg7 53.Rc7 Qd1+ 54.Qg1 Qe2 55.Rc1 Bd3 56.Re1 Qc2 57.Rc1 Qe2 58.Qf1 Qxf1+ 59.Rxf1 Bxf1 60.Bxf1 Ng5 61.Bg2 Kf7 62.Be3 Rg8 63.Bf2 Ra8 64.Bf1 Ra1 65.Kg2 Ra2 66.Bd3 Nxh3 67.Kxh3 Rxf2 68.Kxh4 Rxh2+ 69.Kg5 Rd2 70.Bg6+ Ke7 71.Kf4 Rxd4+ 72.Ke3 Rg4 73.Bd3 Kd7 74.Bb5+ Kc7 75.Bd3 Kb6 76.Kf3 Rg7 77.Kf4 Kc5 78.Ke3 Rg3+ 79.Ke2 Kd4 1-0
2023.04.03 Fagernes GM Open 2023
997175 IM Koustav, Chatterjee (2520) IM Vestby-Ellingsen, Mads (2387) 1-0
1.d4 Nf6 2.c4 e6 3.Nf3 d5 4.g3 dxc4 5.Bg2 Nbd7 6.O-O Rb8 7.a4 a6 8.a5 Bd6 9.Nbd2 b5 10.axb6 Nxb6 11.Qc2 O-O 12.Nxc4 Nxc4 13.Qxc4 Rb5 14.Qc2 Bb7 15.Ne1 Qa8 16.Bxb7 Qxb7 17.Nd3 Nd7 18.b4 e5 19.Nc5 Bxc5 20.bxc5 Qd5 21.e4 Qxd4 22.Be3 Qb2 23.Qxb2 Rxb2 24.Rxa6 Nb8 25.Ra7 Rc8 26.Ra8 Rd8 27.Rfa1 Rb7 28.c6 Rb3 29.R1a7 Rxe3 30.fxe3 Kf8 31.Rxc7 Nxc6 32.Rac8 1-0
2023.04.02 Fagernes GM Open 2023
997131 FM Sourath, Biswas (2265) IM Koustav, Chatterjee (2520) 0-1
1.Nf3 Nf6 2.c4 e6 3.b3 d5 4.Bb2 Bd6 5.g3 c5 6.cxd5 exd5 7.Bg2 Nc6 8.O-O d4 9.e3 O-O 10.Na3 Bg4 11.Qb1 Re8 12.Re1 Qd7 13.exd4 cxd4 14.Qd3 Bf5 15.Qc4 Be4 16.Nh4 Bxa3 17.Bxa3 Ne5 18.Qa4 b5 19.Qa6 Re6 20.Qa5 Bxg2 21.Kxg2 Qb7+ 22.Kg1 Nc6 0-1
2023.03.28 Titled Tue 28th Mar Early
999734 GM Bluebaum, M (2661) IM Koustav, Chatterjee (2520) 1-0
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Bd2 c5 6.a3 Bxc3 7.Bxc3 Ne4 8.Ne2 b6 9.d5 Ba6 10.Qd3 Nxc3 11.Nxc3 e5 12.d6 Nc6 13.Qf5 g6 14.Qh3 f5 15.Nd5 Rc8 16.Qh6 Rf7 17.h4 Qf8 18.Qg5 Qxd6 19.O-O-O Qe6 20.h5 Ne7 21.hxg6 hxg6 22.Rh6 Rg7 23.Be2 Bb7 24.Bf3 Bxd5 25.cxd5 Qd6 26.Rdh1 Kf7 27.e4 Qf6 28.Qd2 fxe4 29.d6 exf3 30.dxe7 Kxe7 31.g3 c4 32.Rd1 Qe6 33.Qg5+ Kf7 34.Qe3 e4 35.Rh4 d5 36.Rf4+ Ke7 37.Rd4 Rf7 38.Rfxe4 dxe4 39.Rxe4 Qxe4 40.Qxe4+ Kf8 41.Qxg6 Rcc7 42.Qh6+ Ke7 43.g4 c3 44.g5 cxb2+ 45.Kxb2 Kd8 46.Qh8+ Kd7 47.g6 Re7 48.g7 Rxg7 49.Qxg7+ 1-0
2023.03.28 Titled Tue 28th Mar Early
1000002 IM Tica, Sven (2439) IM Koustav, Chatterjee (2520) 1-0
1.e4 e5 2.f4 exf4 3.Nf3 Nf6 4.e5 Nh5 5.d4 d6 6.Qe2 Be7 7.exd6 Qxd6 8.Qb5+ Nc6 9.Qxh5 O-O 10.Bd3 g6 11.Qh6 Re8 12.O-O g5 13.Qxh7+ 1-0
2023.03.28 Titled Tue 28th Mar Early
998223 IM Koustav, Chatterjee (2520) IM Hnydiuk, A (2364) 1-0
1.Nf3 Nf6 2.d4 e6 3.Bf4 c5 4.e3 b6 5.Nbd2 Be7 6.h3 O-O 7.Bd3 cxd4 8.exd4 Ba6 9.Bxa6 Nxa6 10.c3 d6 11.O-O Nc7 12.Re1 b5 13.Qe2 Qd7 14.Ne4 Qc6 15.Nfd2 Nxe4 16.Nxe4 Nd5 17.Bh2 Rfc8 18.Rac1 a5 19.Qh5 a4 20.a3 Nb6 21.Rc2 Nc4 22.Rce2 Qd5 23.Qxd5 exd5 24.Ng3 Bf8 25.Nf5 g6 26.Ne3 Nb6 27.Ng4 h5 28.Nf6+ Kh8 29.Bf4 Nc4 30.Nxd5 Bg7 31.Ne3 b4 32.Nxc4 Rxc4 33.axb4 a3 34.Re8+ Rxe8 35.Rxe8+ Kh7 36.bxa3 Rxc3 37.Re3 Rc1+ 38.Kh2 Bxd4 39.Rd3 Rc4 40.Bxd6 Bxf2 41.Rf3 Rc2 42.Rxf7+ Kg8 43.Rf8+ Kg7 44.Rf3 h4 45.b5 Bb6 46.Be5+ Kg8 47.Rf6 Rc1 48.Rxb6 1-0
2023.03.28 Titled Tue 28th Mar Early
999540 IM Koustav, Chatterjee (2520) GM So, Wesley (2761) 0-1
1.Nf3 c5 2.c4 Nc6 3.Nc3 g6 4.g3 Bg7 5.Bg2 d6 6.O-O Rb8 7.a3 e6 8.Rb1 Nge7 9.d3 O-O 10.Bd2 b6 11.b4 Bb7 12.h4 h6 13.e4 Qd7 14.Qe2 f5 15.Rfe1 Rbe8 16.bxc5 dxc5 17.Rbd1 Rd8 18.exf5 exf5 19.Bf1 Rfe8 20.Qe6+ Qxe6 21.Rxe6 Kf7 22.Rde1 Bc8 23.R6e3 Nd4 24.Rd1 f4 25.Rxe7+ Rxe7 26.Nxd4 Bxd4 27.gxf4 Bg4 28.Rc1 Bxc3 29.Bxc3 Be2 30.Bg2 Rxd3 31.Bd5+ Kf8 32.Bf6 Rd7 33.Re1 Rd1 34.Rxd1 Bxd1 35.Be6 Rd6 0-1
2023.03.28 Titled Tue 28th Mar Early
998778 IM Koustav, Chatterjee (2520) GM Bortnyk, Olexandr (2605) 1-0
1.Nf3 Nf6 2.d4 b6 3.g3 Bb7 4.Bg2 g6 5.O-O Bg7 6.c4 O-O 7.d5 Na6 8.Nc3 Nc5 9.Nd4 e5 10.Nc2 a5 11.b3 Ne8 12.Rb1 Nd6 13.Ba3 Qe7 14.Qd2 f5 15.Rfd1 e4 16.Nd4 Ba6 17.Rbc1 Rae8 18.Qe3 Nf7 19.Qd2 e3 20.Qxe3 Qxe3 21.fxe3 Bh6 22.Nc2 d6 23.Rf1 Re7 24.Rcd1 Rfe8 25.Bc1 Bg7 26.Nd4 Bh6 27.e4 Bxc1 28.Rxc1 fxe4 29.Nc6 Bc8 30.Nxe7+ Rxe7 31.Rf6 Kg7 32.Rcf1 Nh6 33.R6f4 g5 34.Rf8 Bg4 35.h3 Bh5 36.g4 Bg6 37.R8f6 Nf7 38.Nb5 Ne5 39.R6f2 a4 40.Nd4 axb3 41.axb3 Kh6 42.Rf6 Kg7 43.b4 Ncd7 44.Ne6+ Kh6 45.R6f2 e3 46.Rf6 Nxf6 47.Rxf6 Nxc4 48.h4 Rxe6 49.dxe6 Kg7 50.hxg5 Ne5 51.e7 Bf7 52.Bd5 Be8 53.Rf8 Bb5 54.Rg8# 1-0
2023.03.28 Titled Tue 28th Mar Early
998036 FM Salman, P (2287) IM Koustav, Chatterjee (2520) 0-1
1.d4 Nf6 2.Nc3 d5 3.Bf4 e6 4.Nb5 Na6 5.e3 c6 6.Nc3 Nc7 7.g4 Bd6 8.g5 Bxf4 9.gxf6 Bh6 10.fxg7 Bxg7 11.Nf3 Qe7 12.Bd3 Bd7 13.Rg1 f6 14.Qe2 O-O-O 15.O-O-O e5 16.e4 f5 17.exd5 e4 18.Bc4 Rhe8 19.Ne1 Bh6+ 20.Kb1 Qd6 21.dxc6 Bxc6 22.d5 Bd7 23.Bb3 Na6 24.Ng2 Nc5 25.Ne3 Nxb3 26.axb3 Kb8 27.Nc4 Qf6 28.b4 Bf4 29.b5 Rc8 30.b6 axb6 31.d6 Qd8 32.Nd5 Bb5 33.Nxf4 Bxc4 34.Qh5 Qd7 35.b3 Bg8 36.Qh6 Red8 37.Rg7 Qc6 38.Rd2 Bxb3 39.Qxh7 Bxc2+ 40.Kc1 Bd3+ 41.Kb2 Qc1+ 42.Ka2 Bc4# 0-1
2023.03.28 Titled Tue 28th Mar Early
999064 GM Svane, Rasmus (2620) IM Koustav, Chatterjee (2520) 0-1
1.Nf3 d5 2.g3 Nf6 3.Bg2 c6 4.O-O Bf5 5.c4 e6 6.Qb3 Qb6 7.d3 Nbd7 8.cxd5 exd5 9.Qc2 Be7 10.Nc3 O-O 11.e4 dxe4 12.dxe4 Bg6 13.Nh4 Rad8 14.h3 Rfe8 15.Kh2 Bb4 16.Be3 Qa5 17.Nxg6 hxg6 18.f3 Qh5 19.Rad1 Ne5 20.Rxd8 Rxd8 21.Ne2 Neg4+ 22.fxg4 Nxg4+ 23.Kh1 Nxe3 24.Qd1 Rxd1 0-1
2023.03.28 Titled Tue 28th Mar Early
998588 FM Kuzmin, Roman (2274) IM Koustav, Chatterjee (2520) 0-1
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.a4 Bb7 9.Nc3 Na5 10.Ba2 b4 11.Nd5 d6 12.d4 Nxd5 13.Bxd5 Bxd5 14.exd5 exd4 15.Qxd4 Rb8 16.Qd3 Ra8 17.Bd2 c5 18.dxc6 Nxc6 19.Rad1 Qd7 20.Bf4 Rfd8 21.h3 h6 22.b3 a5 23.Re2 Bf8 24.Red2 Qe6 25.Qd5 Qf6 26.Be3 Rac8 27.Bb6 Re8 28.Bxa5 Nxa5 29.Qxa5 Re4 30.Qd5 Rce8 31.a5 Qc3 32.a6 Qc7 33.Ra1 Qa7 34.Qb7 Qxb7 35.axb7 Rb8 36.Ra7 Re7 37.Rd4 Rexb7 38.Rxb7 Rxb7 39.Nd2 d5 40.Nf1 Ra7 41.Ne3 Ra1+ 42.Kh2 Bd6+ 43.g3 Bc5 44.Rxd5 Bxe3 45.fxe3 Re1 46.Rd4 Rxe3 47.Kg1 Re2 48.Rxb4 Rxc2 49.Rb8+ Kh7 50.b4 Rb2 51.h4 h5 52.b5 Kg6 53.Kf1 f6 54.Kg1 Kf5 55.b6 g5 56.hxg5 fxg5 57.b7 Kg4 58.Kf1 Kxg3 59.Rg8 Rb1+ 60.Ke2 Rxb7 61.Rxg5+ Kh4 62.Rg8 Rf7 63.Ke3 Kh3 64.Ke2 h4 65.Ke3 Kh2 66.Ke2 h3 67.Ke3 Ra7 68.Kf2 Ra2+ 69.Kf1 Rg2 70.Rh8 Rg1+ 71.Kf2 Ra1 72.Rh7 Ra2+ 73.Kf1 Kg3 74.Rg7+ Kf3 75.Rf7+ Kg3 76.Rg7+ Kh2 77.Rh7 Ra3 78.Kf2 Ra6 79.Rh8 Rf6+ 80.Ke1 Rf4 81.Ke2 Kg3 82.Rg8+ Rg4 83.Rh8 h2 84.Kf1 Rf4+ 85.Ke2 Kg2 86.Rg8+ Kh3 87.Rh8+ Rh4 88.Ra8 h1=Q 89.Ra3+ Kh2 90.Re3 Qg2+ 91.Kd3 Rh3 0-1
2023.03.28 Titled Tue 28th Mar Early
998871 IM Koustav, Chatterjee (2520) GM Le Tuan Minh (2542) 0-1
1.Nf3 d5 2.d4 Nf6 3.Bf4 c5 4.e3 Qb6 5.Qc1 Nc6 6.c3 Bf5 7.Nbd2 e6 8.Be2 h6 9.h3 Be7 10.O-O O-O 11.a4 Rac8 12.dxc5 Bxc5 13.b4 Be7 14.a5 Qd8 15.Qb2 Bd6 16.Rfd1 Bxf4 17.exf4 Qc7 18.g3 Bxh3 19.c4 Bg4 20.Rac1 Qe7 21.a6 Nxb4 22.axb7 Qxb7 23.Rb1 a5 24.Qa3 Qb6 25.Nb3 Ne4 26.c5 Rxc5 27.Nxc5 Qxc5 28.Rf1 Nxg3 0-1
2023.03.28 Titled Tue 28th Mar Early
999411 IM Makarian, Rudik (2557) IM Koustav, Chatterjee (2520) 0-1
1.d4 Nf6 2.c4 e6 3.Nf3 d5 4.Nc3 Bb4 5.Qa4+ Nc6 6.Bd2 O-O 7.a3 Bxc3 8.Bxc3 Ne4 9.e3 Nxc3 10.bxc3 dxc4 11.Bxc4 Ne7 12.O-O c5 13.Ne5 Qc7 14.Bd3 b6 15.Qc2 h6 16.Bh7+ Kh8 17.Be4 Rb8 18.Qe2 Bb7 19.Bxb7 Rxb7 20.a4 Kg8 21.Rfc1 Rc8 22.h4 cxd4 23.cxd4 Qxc1+ 24.Rxc1 Rxc1+ 25.Kh2 Rbc7 26.Qf3 Nd5 27.h5 Nf6 28.Qa8+ Kh7 29.Qf8 Nd7 30.Qxf7 Nxe5 31.Qxe6 Nd7 32.d5 Nf6 33.e4 Re1 34.f3 Rcc1 35.g4 Re2+ 36.Kg3 Rc3 37.e5 Ne4+ 38.Kf4 Rxf3+ 39.Kxf3 Ng5+ 40.Kxe2 Nxe6 41.dxe6 Kg8 42.Kd3 Kf8 43.Kc4 a6 44.Kd5 Ke7 45.Kc6 b5 46.axb5 axb5 47.Kxb5 Kxe6 48.Kc6 Kxe5 49.Kd7 Kf4 50.Ke6 Kxg4 51.Kf7 Kxh5 52.Kxg7 Kg5 0-1
2023.03.28 Titled Tue 28th Mar Early
999935 IM Koustav, Chatterjee (2520) GM Santos Ruiz, Miguel (2591) 1-0
1.Nf3 d5 2.d4 c6 3.c4 Nf6 4.e3 e6 5.b3 Nbd7 6.Bd3 b6 7.O-O Bb7 8.Nbd2 c5 9.Bb2 Rc8 10.Qe2 Be7 11.cxd5 exd5 12.Bf5 O-O 13.Ne5 Rc7 14.Ndf3 g6 15.Bxd7 Nxd7 16.Nxd7 Qxd7 17.dxc5 bxc5 18.Rac1 Qe6 19.Rfd1 d4 20.Nxd4 Qd5 21.Nf3 Qf5 22.Ba1 Rfc8 23.Ne5 h5 24.Nc4 h4 25.h3 Qg5 26.f3 Bf6 27.f4 Qf5 28.Nd6 Qe6 29.Bxf6 Qxf6 30.Nxc8 Rxc8 31.Rd2 Be4 32.Rcd1 Re8 33.Rd6 Qe7 34.Qd2 Kh7 35.Rd8 Bc6 36.Rxe8 Qxe8 37.Qf2 Qe7 38.f5 g5 39.f6 Qe4 40.Qf3 Qxf3 41.gxf3 Bxf3 42.Rd7 Kg6 43.Rxa7 Kxf6 44.a4 Kg6 45.a5 f5 46.a6 g4 47.Rc7 gxh3 48.a7 Kg5 49.Rc8 Kg4 50.Kh2 1-0
2023.01.03 59th ch-IND 2022-23
1071917 Hari, Madhavan N B (2385) IM Koustav, Chatterjee (2508) 1/2-1/2
1.d4 Nf6 2.c4 e6 3.Nc3 d5 4.cxd5 exd5 5.Bg5 c6 6.e3 Be7 7.Bd3 O-O 8.Qc2 Nbd7 9.Nge2 Re8 10.O-O Nf8 11.Bxf6 Bxf6 12.b4 a6 13.a4 g6 14.b5 a5 15.bxc6 bxc6 16.Rad1 Ne6 17.e4 Nxd4 18.Nxd4 Bxd4 19.Ne2 Bf6 20.Qxc6 Bd7 21.Qc2 Rc8 22.Qa2 Rb8 23.Nf4 Rb4 24.Bb5 Bxb5 25.axb5 d4 26.Nd5 Rxb5 27.Qa4 Rxd5 28.exd5 Re7 29.Ra1 Qxd5 30.Qxa5 Qd7 31.Rae1 Kg7 32.Rxe7 Qxe7 33.Re1 Qd7 34.Qd2 h5 35.Qd3 Qc6 36.g3 Qd5 37.h4 Qc6 38.Qe4 Qd7 39.Rd1 Qd8 40.Rd3 Qd7 41.Kg2 Qd6 42.f3 Qd7 43.Rd2 Qc8 44.Rc2 Qd7 45.Rc1 Qb5 46.Rb1 Qc4 47.Rf1 Qc8 48.Qd3 Qe6 49.f4 Qd5+ 50.Qf3 Qe6 51.f5 Qe3 52.fxg6 Qxf3+ 53.Kxf3 fxg6 54.Ke4 Be7 55.Ke5 g5 56.hxg5 Kg6 57.Ke6 Bb4 58.Ke5 Kxg5 59.Rf7 Kg4 60.Rg7+ Kf3 61.Kxd4 Bd6 62.Rh7 Bxg3 63.Rxh5 Kg2 64.Ke3 Bf2+ 65.Ke2 Bg1 66.Rg5+ Kh1 67.Kf1 Bh2 68.Rg6 1/2-1/2
2023.01.02 59th ch-IND 2022-23
1082973 IM Koustav, Chatterjee (2508) GM Karthik, V4 (2503) 0-1
1.d4 Nf6 2.Nf3 d5 3.c4 e6 4.g3 dxc4 5.Bg2 Bd7 6.Ne5 Bc6 7.Nxc6 Nxc6 8.O-O Qd7 9.e3 O-O-O 10.Nc3 h5 11.b3 Bb4 12.Qc2 cxb3 13.axb3 Bxc3 14.Qxc3 Nd5 15.Qb2 a6 16.Bd2 f5 17.Rfc1 Kb8 18.Rc5 Na7 19.h4 Nb5 20.Rac1 Rc8 21.Qb1 Nf6 22.Qd3 Rhe8 23.Qe2 g6 24.Ba5 Nd5 25.Bd2 c6 26.Rd1 Qg7 27.Rcc1 Rcd8 28.Kf1 e5 29.dxe5 Qxe5 30.Ba5 Nbc3 31.Rxd5 Nxe2 32.Rxe5 Nxc1 33.Bxd8 Rxe5 34.b4 Re6 35.e4 Rd6 0-1
2023.01.01 59th ch-IND 2022-23
1082906 IM Srihari, L R (2429) IM Koustav, Chatterjee (2508) 1/2-1/2
1.d4 Nf6 2.c4 e6 3.g3 d5 4.Bg2 Be7 5.Nf3 O-O 6.O-O c6 7.Nc3 a5 8.Ne5 Nfd7 9.Nxd7 Nxd7 10.b3 f5 11.a4 Bf6 12.Ba3 Re8 13.e3 Kh8 14.Qc2 Nb8 15.Rad1 Na6 16.Rfe1 Be7 17.Bb2 Nb4 18.Qb1 Rf8 19.Ne2 g5 20.Nc1 Bd7 21.Nd3 Nxd3 22.Qxd3 g4 23.h3 gxh3 24.Bxh3 Rg8 25.Bg2 Bd6 26.c5 Bc7 27.Kf1 Rb8 28.Ke2 b5 29.Bc3 Bc8 30.Kd2 Ba6 31.Rh1 Ra8 32.Qc2 Bxg3 33.fxg3 Rxg3 34.Kc1 Qg5 35.Bf1 bxa4 36.Bd2 axb3 37.Qxb3 f4 38.Bxa6 fxe3 39.Qb7 exd2+ 40.Kb2 Qg8 41.Rxh7+ Qxh7 42.Qxa8+ Rg8 43.Qxc6 Rb8+ 44.Kc3 Qh3+ 45.Kc2 Qb3+ 46.Kxd2 Qb2+ 47.Ke3 Qg2 48.Bb5 Rf8 49.Be2 Qe4+ 50.Kd2 Qxd4+ 51.Kc2 Qe3 52.Bd3 Kg7 53.Rd2 Rf2 54.Qc7+ Kf6 55.Qd8+ Kf7 56.Qc7+ Kf6 1/2-1/2
2022.12.31 59th ch-IND 2022-23
1082836 IM Koustav, Chatterjee (2508) GM Mitrabha, G (2487) 1/2-1/2
1.c4 e6 2.Nc3 d5 3.d4 Nf6 4.cxd5 exd5 5.Bg5 c6 6.e3 Bf5 7.Qf3 Bg6 8.Bxf6 Qxf6 9.Qxf6 gxf6 10.Nf3 Nd7 11.Nh4 Be7 12.Ne2 Nb6 13.Ng3 Bb4+ 14.Kd1 Na4 15.Ngf5 b5 16.Rb1 a5 17.Bd3 Kd7 18.Ke2 Rhe8 19.g4 Nb6 20.Ng2 Nc4 21.Nf4 Kc7 22.Nh5 Bxh5 23.gxh5 Bf8 24.h6 Nd6 25.Ng7 Bxg7 26.hxg7 f5 27.Rhg1 Rg8 28.Rg5 h6 29.Rh5 Rxg7 30.Rxh6 Re8 31.Rh4 Rg4 32.Rxg4 fxg4 33.f3 Rh8 34.Rh1 f5 35.Kf2 Rh3 36.Be2 g3+ 37.Kg2 Rxh2+ 38.Rxh2 gxh2 39.Kxh2 f4 40.Bd3 fxe3 41.Kg3 Nc4 42.b3 Nb2 43.Be2 c5 44.dxc5 d4 45.Bxb5 d3 46.f4 d2 47.Be2 Kc6 48.f5 Kxc5 49.f6 Kd6 50.f7 Ke7 51.Kf3 d1=Q 52.Bxd1 Nxd1 53.Ke2 Nc3+ 54.Kxe3 Kxf7 55.Kd4 Nxa2 56.Kc4 Nc1 57.Kb5 Nxb3 58.Ka4 Nd4 59.Kxa5 1/2-1/2
2022.12.30 59th ch-IND 2022-23
1082768 GM Sethuraman, S (2642) IM Koustav, Chatterjee (2508) 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 Qb6 9.Qd2 Qxb2 10.Rb1 Qa3 11.Bb5 Nxd4 12.Bxd4 a6 13.Bxd7+ Bxd7 14.Rb3 Qe7 15.Rxb7 Rc8 16.O-O Qd8 17.Qe3 Rc4 18.Rfb1 Be7 19.h3 O-O 20.Kh2 Bc8 21.Ra7 f6 22.Rd1 fxe5 23.Bxe5 Bf6 24.Rd2 Bxe5 25.Qxe5 Qf6 26.Qxf6 gxf6 27.Ne2 Rf7 28.Rxf7 Kxf7 29.c3 Bd7 30.f5 e5 31.Rxd5 Bxf5 32.Ra5 Rc6 33.Kg1 Be6 34.Kf2 Rb6 35.a4 Rb2 36.Kf3 Bb3 37.Nc1 Bc4 38.Rc5 Bf1 39.g4 Rc2 40.Nb3 Bxh3 41.a5 Kg6 42.Rc7 h6 43.Kg3 Bf1 44.Rc8 Be2 45.Rc7 h5 46.gxh5+ Bxh5 47.Na1 Rb2 48.Rc6 Kg5 49.Rb6 Ra2 50.Nb3 f5 0-1
2022.12.29 59th ch-IND 2022-23
1082704 IM Koustav, Chatterjee (2508) IM Vignesh, N R (2493) 1-0
1.e4 c5 2.c3 Nf6 3.e5 Nd5 4.Nf3 d6 5.Bc4 e6 6.d4 cxd4 7.cxd4 Nc6 8.O-O Be7 9.Qe2 O-O 10.Qe4 Ndb4 11.exd6 Qxd6 12.Nc3 Na5 13.Bb5 a6 14.Bf4 Qd8 15.Ba4 Bd7 16.Bxd7 Qxd7 17.Ne5 Qd8 18.Rad1 Nd5 19.Nxd5 exd5 20.Qf5 Qc8 21.Qd7 Qd8 22.Rc1 Bf6 23.Rc7 Nc6 24.Rd1 Bxe5 25.dxe5 Qh4 26.Qf5 g6 27.Qg5 Qxg5 28.Bxg5 Nxe5 29.Rxd5 f6 30.Bxf6 Rxf6 31.Rxe5 Rf7 32.Ree7 Rd8 33.g4 Rxe7 34.Rxe7 b5 35.Re2 Kf7 36.Kg2 Kf6 37.Rc2 Rd6 38.h4 h6 39.Kf3 b4 40.Ke4 a5 41.f4 b3 42.axb3 Rb6 43.g5+ hxg5 44.hxg5+ Ke6 45.Rc7 Rb4+ 46.Kf3 Rxb3+ 47.Kg4 Rb6 48.Rg7 Kd5 49.Rf7 a4 50.Rf6 Rxb2 51.Rxg6 a3 52.Ra6 a2 53.g6 Rb6 54.Rxa2 Rxg6+ 55.Kf5 Rg8 56.Rd2+ Kc6 57.Ke6 1-0
2022.12.28 59th ch-IND 2022-23
1082636 FM Aaryan, Varshney (2346) IM Koustav, Chatterjee (2508) 0-1
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5 7.O-O Nc6 8.Be3 Ng4 9.Bg5 f6 10.Bh4 g5 11.Bg3 Nh6 12.dxe5 fxe5 13.h3 g4 14.hxg4 Bxg4 15.Ne1 Bxe2 16.Nxe2 Kh8 17.Nf3 Qe8 18.Nc3 Nd8 19.c5 dxc5 20.Qd5 c6 21.Qxc5 Ne6 22.Qb4 Rxf3 23.gxf3 Qh5 24.Rfd1 Nf7 25.Rd7 Nfg5 26.Rxg7 Qh3 27.Rf7 Nxf7 28.Qe7 Nfg5 29.Qf6+ Kg8 30.Qf5 Qh5 31.Kg2 Rf8 32.Qg4 Qg6 33.Rh1 Nf4+ 34.Bxf4 Rxf4 35.Qc8+ Rf8 36.Qg4 Rf4 37.Qc8+ Rf8 38.Qg4 Nxf3 39.Qxg6+ hxg6 40.Rh3 Nd4 41.Rg3 Kg7 42.Rg5 Kf6 43.Rg3 Ne6 44.Kf1 Rd8 45.Ke1 Nf4 46.b3 Rd4 47.f3 Rd3 48.Nd1 a5 49.Nb2 Re3+ 50.Kd1 Re2 51.Kc1 Rf2 52.Rg4 g5 53.Kb1 b5 54.Nd1 Rxf3 55.Kc2 Kg6 56.Rg1 Kh5 57.Rh1+ Rh3 58.Rg1 g4 59.Nb2 g3 60.Nd1 g2 61.Nf2 Rf3 62.Nd1 Rf1 63.Rxg2 Nxg2 0-1
2022.12.27 59th ch-IND 2022-23
1082563 IM Koustav, Chatterjee (2508) IM Aronyak, Ghosh (2521) 1/2-1/2
1.d4 Nf6 2.Nf3 e6 3.Bf4 b6 4.e3 Bb7 5.Nbd2 Bd6 6.Bg3 Bxg3 7.hxg3 Qe7 8.Bd3 Nc6 9.c4 e5 10.d5 e4 11.dxc6 Bxc6 12.Be2 exf3 13.Bxf3 O-O-O 14.Bxc6 dxc6 15.Qe2 Rd7 16.Nf3 Rdd8 17.Nd2 Rd7 18.Nf3 Rdd8 19.Nd2 Rd7 20.Nf3 Rdd8 1/2-1/2
2022.12.26 59th ch-IND 2022-23
1089398 GM Gupta, Ab (2601) IM Koustav, Chatterjee (2508) 1-0
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.g3 O-O 5.Bg2 d5 6.Nf3 dxc4 7.O-O Nc6 8.Re1 Rb8 9.e4 h6 10.a3 Bxc3 11.bxc3 b5 12.Rb1 Ne7 13.a4 a6 14.Ba3 Re8 15.Ne5 Bd7 16.Rb2 Nc6 17.f4 bxa4 18.Nxc4 Na7 19.Bc5 Nb5 20.Rc2 Bc6 21.Na5 Ba8 22.c4 c6 23.Qd2 Nc7 24.e5 Nd7 25.Bd6 Qc8 26.Nxc6 Bxc6 27.Bxc6 Rd8 28.d5 Rb6 29.Qa5 Qb8 30.c5 Rb1 31.Re2 Rxe1+ 32.Rxe1 1-0
2022.12.25 59th ch-IND 2022-23
1089332 IM Koustav, Chatterjee (2508) IM Nitin, S (2372) 1-0
1.Nf3 Nf6 2.g3 g6 3.Bg2 Bg7 4.d4 O-O 5.c4 d6 6.Nc3 c6 7.e4 Be6 8.Qd3 Na6 9.O-O Bg4 10.Be3 Nd7 11.h3 Bxf3 12.Bxf3 c5 13.Rfd1 cxd4 14.Bxd4 Ne5 15.Qe2 Qc8 16.Nd5 Re8 17.Bxe5 Bxe5 18.h4 Nc5 19.h5 Qd8 20.Kg2 Ne6 21.Qe3 Nf8 22.Rab1 e6 23.Nb4 Qf6 24.b3 a5 25.Nc2 a4 26.b4 Rac8 27.Be2 Qe7 28.Nd4 d5 29.c5 dxe4 30.Qxe4 Bg7 31.Nb5 Red8 32.Bf3 Rb8 33.Rxd8 Qxd8 34.Rd1 Qe7 35.Qc2 e5 36.Bd5 Ne6 37.hxg6 hxg6 38.Qxa4 Ng5 39.Qa7 Rd8 40.c6 Qxb4 41.cxb7 Rxd5 42.b8=Q+ Bf8 43.Nd4 1-0
2022.12.24 59th ch-IND 2022-23
1089264 Srihari, L (2356) IM Koustav, Chatterjee (2508) 0-1
1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.d3 Bc5 5.c3 O-O 6.O-O d5 7.exd5 Nxd5 8.Re1 Bg4 9.h3 Bh5 10.Nbd2 Nb6 11.Bb3 Qxd3 12.Nxe5 Qf5 13.Nef3 Rad8 14.Qe2 Nd5 15.Qe4 Qxe4 16.Nxe4 Bb6 17.g4 Bg6 18.Bg5 f6 19.Rad1 Bf7 20.Bc1 Nde7 21.Bxf7+ Kxf7 22.b4 Ng6 23.Kg2 h6 24.Rxd8 Rxd8 25.Be3 Bxe3 26.Rxe3 a5 27.b5 Nce5 28.Nd4 Nf4+ 29.Kh2 b6 30.Nd2 g5 31.N2b3 a4 32.Na1 Nd5 33.Rg3 Nxc3 34.Nc6 Nxc6 35.Rxc3 Ne5 36.Rxc7+ Rd7 37.Rxd7+ Nxd7 38.Nc2 Ke6 39.Ne3 Kd6 40.Kg3 Kc5 41.Kf3 Kxb5 42.a3 Ne5+ 43.Ke4 Nc4 44.Nc2 Kc5 45.f4 b5 46.f5 Nxa3 47.Nxa3 b4 48.Nc2 b3 49.Kd3 bxc2 50.Kxc2 Kd4 51.Kb2 Ke3 52.Ka3 Kf3 53.Kxa4 Kg3 54.Kb5 Kxh3 0-1
2022.12.23 59th ch-IND 2022-23
1089196 IM Koustav, Chatterjee (2508) Gandhi, An (2197) 1-0
1.c4 c6 2.Nf3 Nf6 3.g3 d5 4.Bg2 g6 5.b3 Bg7 6.Bb2 O-O 7.O-O a5 8.d3 Na6 9.a3 b5 10.Qc2 Qb6 11.cxb5 cxb5 12.Bd4 Qb7 13.Qb2 b4 14.e4 dxe4 15.dxe4 Rd8 16.Nbd2 Bd7 17.Nc4 Bb5 18.Nxa5 Qc7 19.Nc4 Nc5 20.axb4 Nxb3 21.Qxb3 Rxa1 22.Rxa1 Qxc4 23.Qb2 Qd3 24.Re1 Rc8 25.Bf1 Qxf3 26.Bxb5 Nxe4 27.Bxg7 Ng5 28.Bf1 Qf5 29.Bh6 Nf3+ 30.Kh1 e5 31.Rc1 Rd8 32.Be3 Qh5 33.h3 f5 34.Qb3+ Kh8 35.Qf7 1-0
2022.12.22 59th ch-IND 2022-23
1089130 Chandar, R (1918) IM Koustav, Chatterjee (2508) 0-1
1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 a6 5.Bd3 Bc5 6.Nb3 Ba7 7.Qg4 g6 8.Nc3 Nc6 9.Bd2 d6 10.Qg3 Qc7 11.O-O-O Bd7 12.Be2 f6 13.Be1 Bb8 14.f4 Nge7 15.Qh4 O-O 16.g4 b5 17.f5 Ba7 18.fxe6 Bxe6 19.Rf1 g5 20.Qg3 Ne5 21.Nd4 Bxd4 22.Rxd4 Rac8 23.h4 N7c6 24.Rd2 b4 25.Nd5 Bxd5 26.exd5 Nd4 27.Bd1 Qc4 28.Qg1 b3 29.axb3 Nxb3+ 30.Kb1 Qa4 31.c3 Qa1+ 32.Kc2 Rb8 0-1
2022.12.10 Bangabandhu Premier 2022
1109533 Rahman, MdS (1970) IM Koustav, Chatterjee (2496) 0-1
1.d4 Nf6 2.c4 b6 3.Nc3 Bb7 4.Nf3 e6 5.a3 g6 6.Bg5 Bg7 7.e3 d6 8.Be2 Nbd7 9.O-O h6 10.Bh4 O-O 11.Qc2 g5 12.Bg3 Nh5 13.h3 f5 14.Bh2 g4 15.hxg4 fxg4 16.Nd2 g3 17.Bxh5 gxh2+ 18.Kh1 Bxg2+ 19.Kxg2 Qg5+ 20.Kh1 Qxh5 21.Qe4 Rae8 22.f4 c5 23.Rf2 Nf6 24.Qf3 Qxf3+ 25.Rxf3 cxd4 26.exd4 Ng4 27.Ne2 e5 28.fxe5 dxe5 29.d5 Rxf3 30.Nxf3 e4 31.Nxh2 Nxh2 32.Kxh2 Bxb2 33.Ra2 Be5+ 34.Kh3 Rf8 35.Ng1 Rf1 36.Ne2 Rf2 37.Kg4 Kg7 38.Nc1 Rf1 39.Ne2 Kg6 40.a4 Rf3 0-1
2022.12.09 Bangabandhu Premier 2022
1109509 IM Koustav, Chatterjee (2496) GM Sandipan, C (2474) 1-0
1.d4 f5 2.Nf3 Nf6 3.g3 g6 4.Bg2 Bg7 5.O-O O-O 6.c4 e6 7.Nc3 d5 8.cxd5 exd5 9.Bg5 c6 10.b4 Qd6 11.Qb3 Ne4 12.b5 Nxg5 13.Nxg5 h6 14.bxc6 bxc6 15.Nxd5 Kh8 16.Nh3 Na6 17.Nc3 Rb8 18.Qd1 g5 19.e3 f4 20.Re1 f3 21.Bf1 c5 22.Rb1 cxd4 23.Nb5 Qg6 24.Nxd4 Qh5 25.Kh1 Rxb1 26.Qxb1 Nc5 27.Rc1 Bxh3 28.Rxc5 Bxf1 29.Qxf1 Bxd4 30.exd4 Qg4 31.d5 Qd4 32.Rc7 Re8 33.h3 Qxd5 34.Qb1 Qe4 35.Qb2+ Qe5 36.Qc2 Qe4 37.Qc3+ Qe5 38.Qc2 Qe4 39.Qc5 a5 40.Kh2 Qe5 41.Qb6 Re6 42.Qb7 Kg8 43.Qc8+ Re8 44.Qd7 Qxc7 45.Qxc7 Re2 46.Qc5 Kg7 47.g4 1-0
2022.12.08 Bangabandhu Premier 2022
1109497 IM Mohammad Fahad, Rahman (2380) IM Koustav, Chatterjee (2496) 1/2-1/2
1.d4 Nf6 2.c4 e6 3.Nf3 d5 4.Nc3 Bb4 5.Qa4+ Nc6 6.e3 O-O 7.Bd2 a5 8.a3 Bxc3 9.Bxc3 Ne7 10.Qc2 b6 11.cxd5 exd5 12.Bd3 Ba6 13.Bxa6 Rxa6 14.O-O Ne4 15.Rac1 Re8 16.Ne5 c5 17.Qd3 Ra8 18.dxc5 bxc5 19.Rfd1 Qb6 20.Qe2 Nxc3 21.Rxc3 c4 22.Qc2 a4 23.h3 Ra5 24.Nf3 Nc6 25.Rd2 h6 26.Qd1 Rd8 27.e4 dxe4 28.Rxd8+ Nxd8 29.Rxc4 exf3 30.Rc8 Kh7 31.Qxd8 Qb5 32.Qg8+ Kg6 33.Rc3 Qxb2 34.Rxf3 Qc1+ 35.Kh2 Qc7+ 36.Kg1 Qc1+ 37.Kh2 Qc7+ 38.Kg1 Rd5 39.Rg3+ Rg5 40.Rf3 Rd5 41.Rg3+ Rg5 42.Rf3 h5 43.Qf8 Qb7 44.Qd6+ Kh7 45.Kh2 1/2-1/2
2022.12.07 Bangabandhu Premier 2022
1109465 IM Koustav, Chatterjee (2496) IM Muthaiah, AL (2454) 0-1
1.Nf3 d5 2.e3 Nf6 3.c4 e6 4.Nc3 c5 5.cxd5 Nxd5 6.Qc2 Nc6 7.b3 Be7 8.Bb2 O-O 9.h4 f5 10.Be2 b6 11.g4 Ndb4 12.Qb1 Ba6 13.Bxa6 Nxa6 14.gxf5 exf5 15.Ne2 Nab4 16.Nf4 Bf6 17.Rg1 Qd7 18.a3 Nd5 19.Nh5 Bxb2 20.Qxb2 g6 21.O-O-O Rae8 22.d4 cxd4 23.Nxd4 Ne5 24.Ne2 Qb5 25.Kb1 Qxe2 26.Rxd5 Qxh5 27.Rxe5 Qxh4 28.Rxe8 Rxe8 29.Rc1 Qe7 30.Ka2 Rd8 31.a4 h5 32.Rc6 Kh7 33.f4 Rd7 34.Qg2 Qg7 35.Rc2 Rd1 36.Rb2 Qe7 37.Qg3 Rd3 38.Rc2 Rxe3 39.Qg2 Qf7 40.Rc4 Qe7 0-1
2022.12.06 Bangabandhu Premier 2022
1109461 FM Aradhya, Garg (2289) IM Koustav, Chatterjee (2496) 0-1
1.e4 c5 2.Nf3 e6 3.c4 Nc6 4.Nc3 Nf6 5.d4 cxd4 6.Nxd4 Bb4 7.Nxc6 bxc6 8.Bd3 e5 9.O-O O-O 10.Be3 d6 11.h3 Be6 12.Qc2 Qe7 13.Rfd1 Rfd8 14.Rac1 Bc5 15.Qe2 Nd7 16.Bxc5 dxc5 17.Nd5 cxd5 18.exd5 Bxh3 19.gxh3 Qd6 20.Rc3 g6 21.Bc2 f5 22.Ba4 Nf6 23.Bc6 Rac8 24.Re1 e4 25.Ra3 Rc7 26.Ra6 Qe5 27.Qd2 f4 28.d6 Rxc6 29.Rxc6 e3 30.fxe3 f3 31.Qf2 Qg5+ 32.Kh2 Qe5+ 33.Qg3 Qxb2+ 34.Kg1 Qc3 35.Rf1 Qxe3+ 36.Kh2 Rf8 37.d7 Nxd7 38.Rxg6+ hxg6 39.Qxg6+ Kh8 40.Qh5+ Kg7 41.Qg4+ Kh6 42.Qh4+ Kg6 43.Qg4+ Qg5 44.Qe6+ Kh5 45.Rg1 Qe5+ 46.Qxe5+ Nxe5 0-1
2022.12.04 Bangabandhu Premier 2022
1116565 IM Koustav, Chatterjee (2496) Habibur Rahman, S (1871) 1-0
1.e4 c5 2.Nf3 Nc6 3.Bb5 g6 4.O-O Bg7 5.c3 d6 6.d4 cxd4 7.cxd4 a6 8.Ba4 b5 9.Bb3 Bb7 10.Nc3 Nf6 11.e5 dxe5 12.dxe5 Ng4 13.Bxf7+ Kxf7 14.Ng5+ Ke8 15.Qxg4 Nxe5 16.Qg3 Qd3 17.Be3 Qf5 18.Rad1 h6 19.Nh3 Kf7 20.Bd4 Rad8 21.Ne2 Rd6 22.f4 Nc4 23.Ng5+ Kg8 24.Bxg7 Kxg7 25.Rxd6 Nxd6 26.Nd4 Qd5 27.Nge6+ Kh7 28.f5 g5 29.h4 Nf7 30.f6 exf6 31.Rxf6 Kg8 32.Rg6+ 1-0
2022.12.03 Bangabandhu Premier 2022
1116530 GM Iniyan, Pa (2534) IM Koustav, Chatterjee (2496) 1/2-1/2
1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Ba6 5.b3 Bb4+ 6.Bd2 Be7 7.Nc3 d5 8.cxd5 exd5 9.Bg2 O-O 10.O-O Re8 11.a3 c5 12.dxc5 bxc5 13.Ne5 Bb7 14.Bf4 Bf8 15.Nc4 Bc6 16.Ne5 Bb7 17.Nc4 Bc6 18.Ne5 Bb7 19.Nc4 Bc6 1/2-1/2
2022.12.02 Bangabandhu Premier 2022
1116522 IM Koustav, Chatterjee (2496) GM Ghosh, D (2544) 0-1
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qc2 d6 5.e3 O-O 6.Bd3 Bxc3+ 7.Qxc3 e5 8.Ne2 e4 9.Bc2 d5 10.cxd5 Nxd5 11.Qa3 Re8 12.O-O Bf5 13.Ng3 Bg6 14.Qb3 Nc6 15.Bd2 Qd7 16.Qxb7 Rab8 17.Qa6 h5 18.Ba4 Rb6 19.Qc4 h4 20.Rfc1 Re6 21.Ne2 Bh5 22.Nf4 Nxf4 23.exf4 Rg6 24.Be3 Bf3 25.Kf1 Rxg2 26.b3 Rg1+ 27.Kxg1 Qh3 0-1
2022.12.01 Bangabandhu Premier 2022
1116494 GM Pantsulaia, L (2597) IM Koustav, Chatterjee (2496) 0-1
1.c4 Nf6 2.Nf3 e6 3.g3 d5 4.Bg2 d4 5.O-O c5 6.e3 Nc6 7.exd4 cxd4 8.d3 Bd6 9.Na3 O-O 10.Nc2 e5 11.b4 Re8 12.c5 Bf8 13.Bg5 Bf5 14.Nh4 Be6 15.f4 h6 16.Bxf6 Qxf6 17.f5 Bd7 18.Be4 Rab8 19.Qh5 Ne7 20.g4 Bc6 21.Ne1 Nd5 22.b5 Nf4 23.Rxf4 exf4 24.bxc6 Rxe4 25.dxe4 d3 26.Rd1 Qd4+ 27.Kh1 Qxe4+ 28.Nef3 Qe2 29.Rd2 Qf1+ 30.Ng1 bxc6 31.g5 Rb1 32.Nf3 Bxc5 33.Rg2 Bxg1 34.Rxg1 d2 0-1
2022.11.30 Bangabandhu Premier 2022
1116478 IM Koustav, Chatterjee (2496) FM Aaryan, Varshney (2312) 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 d6 9.h3 Na5 10.Bc2 c5 11.d4 Qc7 12.d5 Bd7 13.b3 Nb7 14.c4 Na5 15.Bd3 Rfb8 16.Nc3 bxc4 17.bxc4 Rb4 18.Ba3 Rb7 19.Rc1 Rbb8 20.Ne2 Nb7 21.Rc3 Qa5 22.Bc2 Nh5 23.Qd3 g6 24.g4 Ng7 25.Ng3 Nd8 26.Bc1 f6 27.Kh2 Nf7 28.Ra3 Qc7 29.Bd2 Ng5 30.Nxg5 fxg5 31.Ba4 Bxa4 32.Rxa4 Rb2 33.Rb1 Qb7 34.Rxb2 Qxb2 35.Ne2 h6 36.Nc1 Qb7 37.Ra3 Rb8 38.Qb3 Qc8 39.Qa4 Rb2 40.Nb3 Rc2 41.Be3 Rc3 42.Na5 Rxa3 43.Qxa3 Ne8 44.Nc6 Bf8 45.Qb3 Nf6 46.f3 Nd7 47.h4 gxh4 48.Bxh6 Nf6 49.Kh3 Qe8 50.Bg5 Nh7 51.Bxh4 Qf7 52.Bg3 Ng5+ 53.Kg2 Qh7 54.Qb1 Qf7 55.Qd1 Qh7 56.Na5 Qh3+ 57.Kf2 Bh6 58.Qg1 Nf7 59.Qh2 Qxh2+ 60.Bxh2 Kf8 61.Nc6 Ke8 62.Ke2 Kd7 63.Bg3 Bg5 64.Kd3 Kc7 65.Be1 Kb7 66.Ba5 Kc8 67.Kc2 Kb7 68.Kb3 Kc8 69.Ka3 Kb7 70.Kb3 Kc8 71.Bc3 Kc7 72.Kc2 Kb7 73.Kd3 Kc7 74.Be1 Kb7 75.Bg3 Kc7 76.Ke2 Kb7 77.Na5+ Kb6 78.Nb3 Kc7 79.Bf2 Kb6 80.Kd3 Be7 81.Be3 g5 82.Nd2 Bf8 83.Nf1 Bg7 84.Ng3 Kb7 85.Nf5 Bf8 86.Bd2 Kb6 87.Ke2 Kc7 88.Ba5+ Kb7 89.Kd3 Kc8 90.Kc3 Kb7 91.Kb3 Ka7 92.Ne3 Kb7 93.Nd1 Be7 94.Nb2 Bf8 95.Na4 Be7 96.Ka3 Bf6 1/2-1/2
2022.11.03 19th Asian Continental
1137430 GM Sethuraman, S (2645) IM Koustav, Chatterjee (2496) 1-0
1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.d3 Bc5 5.O-O d6 6.c3 a5 7.Bg5 h6 8.Bh4 Ba7 9.Nbd2 Bd7 10.Re1 g5 11.Bg3 h5 12.h4 Nh7 13.d4 g4 14.Nh2 Qf6 15.Bb5 O-O-O 16.Nc4 exd4 17.Bxc6 Bxc6 18.Nxa5 Bb5 19.a4 Ba6 20.b4 Bb6 21.Nb3 Bc4 22.a5 Ba7 23.Nxd4 d5 24.e5 Qa6 25.e6 Nf6 26.Be5 Ne4 27.e7 Rde8 28.Bxh8 Rxh8 29.Nxg4 Re8 30.Ne5 Nxc3 31.Qxh5 Bxd4 32.Qg4+ Qe6 33.Qxd4 Ne2+ 34.Rxe2 Bxe2 35.Re1 Bb5 36.Qa7 Qa6 37.Qc5 f6 38.Rc1 Bc6 39.Nxc6 Qxc6 40.Qxc6 bxc6 41.Re1 1-0
2022.11.03 Asian Continental Blitz
1137699 GM Sethuraman, S (2643) IM Koustav, Chatterjee (2496) 1-0
1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.d3 Bc5 5.O-O d6 6.c3 a5 7.Bg5 h6 8.Bh4 Ba7 9.Nbd2 Bd7 10.d4 g5 11.Bg3 Qe7 12.Re1 O-O 13.Bd5 Rad8 14.Nc4 g4 15.Nh4 exd4 16.Ng6 Qe8 17.Bh4 Kg7 18.Nxf8 Qxf8 19.Bxc6 Bxc6 20.cxd4 h5 21.Nxa5 Bd7 22.e5 Nh7 23.Bxd8 Qxd8 24.Nc4 Ng5 25.Qd2 b5 26.Ne3 h4 27.exd6 cxd6 28.Nd5 Be6 29.Nf4 Bd7 30.Nd5 Be6 31.Nf4 Bd7 32.Qb4 Bc6 33.Rac1 Ba8 34.d5 h3 35.Qc3+ Kh6 36.Qc7 Qxc7 37.Rxc7 Bd4 38.Rd1 Be5 39.Nd3 Bf6 40.Nf4 hxg2 41.Kxg2 Be5 42.Ne2 Nf3 43.Rxf7 Nh4+ 44.Kg1 Nf3+ 45.Rxf3 gxf3 46.Nd4 Bxd5 47.Nxb5 Bxa2 48.Nxd6 Bb3 49.Rd3 Bc2 50.Rxf3 1-0
2022.11.03 Asian Continental Blitz
1137752 IM Koustav, Chatterjee (2496) FM Aaryan, Varshney (2312) 1-0
1.Nf3 d5 2.e3 Nf6 3.c4 c6 4.Nc3 g6 5.d4 Bg7 6.Be2 O-O 7.O-O b6 8.a4 Bb7 9.a5 bxa5 10.Qa4 Nbd7 11.Qxa5 dxc4 12.Bxc4 Qb6 13.b4 Qxa5 14.Rxa5 Nb6 15.Bb3 Nfd5 16.Nxd5 cxd5 17.b5 Rfc8 18.Ba3 Rc3 19.Ba2 e6 20.Bb4 Rc2 21.Ne1 Rc1 22.Nd3 Rxf1+ 23.Kxf1 a6 24.Nc5 Bc8 25.bxa6 Bf8 26.a7 Bd6 27.Ke2 Bc7 28.Ra3 Nc4 29.Bxc4 dxc4 30.Ne4 Bb7 31.f3 Bb6 32.Bc5 Bc7 33.Kd2 f5 34.Ng5 e5 35.Ne6 Bd8 36.dxe5 Kf7 37.Nd4 Bc7 38.e6+ Kf6 39.Kc3 Be5 40.Kxc4 Rc8 41.Kb5 Bd5 42.e7 Kf7 43.e4 fxe4 44.fxe4 Bxe4 45.Re3 Bxd4 46.Bxd4 Bc6+ 47.Kb4 Bd5 48.Bc5 Ke8 49.Re2 Kd7 50.Rd2 Ke6 51.Rf2 Kd7 52.Rf8 Re8 53.Kc3 Bb7 54.g3 Bc6 55.Kd4 Bb7 56.Ke5 Ba8 57.Kf6 Bc6 58.Kg7 h5 59.Kxg6 Bb7 60.Kxh5 1-0
2022.11.03 Asian Continental Blitz
1137778 GM Narayanan, SL (2673) IM Koustav, Chatterjee (2496) 1/2-1/2
1.d4 Nf6 2.c4 e6 3.Nf3 d5 4.Nc3 c5 5.cxd5 cxd4 6.Nxd4 Nxd5 7.Bd2 Be7 8.g3 Bf6 9.Nf3 Nxc3 10.bxc3 b6 11.Bg2 Bb7 12.Qc2 Nc6 13.Rd1 Qe7 14.h4 h6 15.Bf4 Rd8 16.Rxd8+ Qxd8 17.Kf1 Qc8 18.Nd2 Na5 19.Ne4 Bxe4 20.Qxe4 O-O 21.g4 Qxc3 22.Bf3 Qc4 23.g5 Qxe4 24.Bxe4 hxg5 25.hxg5 Be7 26.Bh7+ Kh8 27.Rh3 Rd8 28.Bd3+ Kg8 29.g6 Bf6 30.Be3 Nb7 31.Rg3 Nc5 32.gxf7+ Kxf7 33.Bg6+ Ke7 34.Rg4 Rd1+ 35.Kg2 Rd5 36.a4 a5 37.Rc4 Rd1 38.Bxc5+ bxc5 39.Rxc5 Rd5 40.Rxd5 exd5 41.f4 d4 42.Kf3 Kd6 43.Ke4 Kc5 44.Be8 Kd6 45.Bb5 Kc5 46.Kf5 Kd6 47.Ke4 1/2-1/2
2022.11.03 Asian Continental Blitz
1137565 IM Manish Anto, Cristiano F (2470) IM Koustav, Chatterjee (2496) 0-1
1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.Nf3 Nb6 5.Be2 g6 6.O-O Bg7 7.exd6 cxd6 8.c4 O-O 9.h3 Nc6 10.Nc3 Bf5 11.Be3 d5 12.b3 dxc4 13.bxc4 Rc8 14.Rc1 Na5 15.Na4 Nbxc4 16.Nc5 Nxe3 17.fxe3 b6 18.e4 bxc5 19.exf5 cxd4 20.Rxc8 Qxc8 21.fxg6 hxg6 22.Qa4 Qc5 23.Kh1 Nc6 24.Bc4 e6 25.Rd1 Ne5 26.Nxe5 Bxe5 27.Qb5 Qxb5 28.Bxb5 Rb8 29.Rb1 f5 30.g4 Kg7 31.Kg2 Bf4 32.Bd3 Rxb1 33.Bxb1 Kf6 34.h4 e5 35.h5 e4 36.hxg6 Kxg6 37.Kf2 d3 38.gxf5+ Kxf5 39.Ke1 Ke5 40.a3 Kd4 41.Ba2 e3 42.Bb3 Bg3+ 0-1
2022.11.03 Asian Continental Blitz
1137821 IM Koustav, Chatterjee (2496) IM Pranesh, M (2438) 1/2-1/2
1.Nf3 Nf6 2.d4 d5 3.Bf4 e6 4.e3 c5 5.Nbd2 Bd6 6.c3 O-O 7.Bd3 cxd4 8.Bxd6 Qxd6 9.exd4 b6 10.O-O Ba6 11.Bxa6 Nxa6 12.Ne5 Nd7 13.Re1 f6 14.Nxd7 Qxd7 15.Qg4 Nc7 16.Re3 Rfe8 17.Rae1 Re7 18.Rh3 a5 19.Qh4 h6 20.Rhe3 a4 21.a3 Qb5 22.Rb1 e5 23.dxe5 Rxe5 24.Rxe5 fxe5 25.Qe7 Qd3 26.Qxc7 Qxd2 27.Qxe5 Kh8 28.Qe3 Qc2 29.Qc1 Qe4 30.Qe1 Qc2 31.Qd1 Qe4 32.Rc1 Re8 33.h3 Qe2 34.Qxa4 Rf8 35.Qd4 Qxb2 36.Re1 Qxa3 37.Re6 Qc1+ 38.Kh2 Qf4+ 39.Qxf4 Rxf4 40.Kg3 Rc4 41.Rxb6 Rxc3+ 42.f3 Rc2 43.Rd6 Rd2 44.h4 Kh7 45.h5 d4 46.Rd7 d3 47.Kh3 Rd1 48.g4 Kg8 49.Kg3 Kf8 50.Kf4 Ke8 51.Rd4 Kf7 52.Ke3 Re1+ 53.Kxd3 Kf6 54.Re4 Ra1 55.Ke3 Ra3+ 56.Kf4 Ra6 57.Rb4 Rc6 58.Rb5 Rc4+ 59.Kg3 Ra4 60.Rb6+ Kf7 61.Rb3 Kf6 62.Re3 Rb4 63.Rd3 Ra4 64.Rd5 Rb4 65.Ra5 Rc4 66.f4 Rc3+ 67.Kh4 Rc4 68.Ra6+ Kf7 69.f5 Rc3 70.Rg6 Rf3 71.Ra6 Rb3 72.Ra7+ Kf6 73.Ra6+ Kf7 74.Ra4 Kf6 75.Re4 Ra3 76.Re6+ Kf7 77.Rg6 Rf3 78.g5 Rf4+ 79.Kg3 Rxf5 80.gxh6 gxh6 81.Rxh6 Kg7 82.Rg6+ Kh7 1/2-1/2
2022.11.03 Asian Continental Blitz
1137580 IM Koustav, Chatterjee (2496) GM Jumabayev, R (2620) 1-0
1.d4 d5 2.Nf3 Nf6 3.Bf4 c5 4.e3 Nc6 5.Nbd2 Nh5 6.dxc5 Nxf4 7.exf4 g6 8.c3 Bh6 9.g3 O-O 10.Nb3 a5 11.a4 Bg7 12.Bg2 b6 13.O-O bxc5 14.Nxc5 Rb8 15.Ra2 d4 16.cxd4 Nxd4 17.Ne5 Qd6 18.Ne4 Qb6 19.Nc3 Be6 20.Bd5 Rfd8 21.Bxe6 Qxe6 22.Re1 Rbc8 23.Kg2 Bxe5 24.fxe5 Qc6+ 25.f3 Nb3 26.Qxb3 Rd3 27.Rf1 Rd2+ 28.Rf2 Rxf2+ 29.Kxf2 Qc5+ 30.Kg2 Rd8 31.Qc2 Qe3 32.Ne4 Rd3 33.Qf2 Qc1 34.b3 1-0
2022.11.03 Asian Continental Blitz
1137858 GM Vokhidov, Shamsiddin (2568) IM Koustav, Chatterjee (2496) 1/2-1/2
1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.Nf3 Nb6 5.a4 Nc6 6.a5 Nd7 7.Bf4 e6 8.a6 Be7 9.Bb5 O-O 10.O-O Nb4 11.axb7 Bxb7 12.Nbd2 dxe5 13.dxe5 Nb6 14.c3 Nd3 15.Bg3 a6 16.Bxd3 Qxd3 17.Nb3 Qxd1 18.Rfxd1 Bxf3 19.gxf3 Nc4 20.Rd7 Bd8 21.Rd4 Rb8 22.Nc5 Nb6 23.Rxa6 Be7 24.Nd7 Ra8 25.Rxa8 Rxa8 26.Nxb6 cxb6 27.Bf4 Ra2 28.b4 Rc2 29.Rc4 g5 30.Be3 b5 31.Rc7 Bxb4 32.Rc8+ Kg7 33.Bxg5 Rxc3 34.Bf6+ Kg6 35.Rb8 Rxf3 36.Rxb5 Bd2 37.Rb8 Bf4 38.Rg8+ Kf5 39.Rg7 Bxe5 40.Bxe5 Kxe5 41.Rxh7 Kf6 42.Kg2 Ra3 43.Rh4 Kg5 44.Rb4 f5 45.Rb8 e5 46.Rg8+ Kf4 47.Rh8 Ra2 48.Rh4+ Kg5 49.Rh3 e4 50.Rg3+ Kf6 51.Rg8 f4 52.Rf8+ Ke5 53.Re8+ Kd4 54.Rf8 Ke5 55.Re8+ Kd5 56.Rd8+ Ke5 57.Re8+ Kf5 58.Rf8+ Kg5 59.Rg8+ Kh5 60.Rh8+ Kg6 61.Rg8+ Kf5 1/2-1/2
2022.11.03 Asian Continental Blitz
1137614 GM Adhiban, Baskaran (2603) IM Koustav, Chatterjee (2496) 0-1
1.e4 Nf6 2.e5 Nd5 3.c4 Nb6 4.d4 d6 5.f4 g6 6.Nc3 dxe5 7.fxe5 Bg7 8.c5 Nd5 9.Bc4 Nxc3 10.bxc3 O-O 11.Nf3 b6 12.Ba3 Ba6 13.Bxa6 Nxa6 14.Qa4 Nb8 15.O-O Qe8 16.Qxe8 Rxe8 17.Ng5 f5 18.Ne6 Na6 19.g4 fxg4 20.c6 h5 21.c4 Bh6 22.Rad1 Rac8 23.d5 Nc5 24.Bxc5 bxc5 25.Kg2 Be3 26.h3 gxh3+ 27.Kxh3 Kh7 28.Rf7+ Kh6 29.Kg3 Bd4 30.Kf4 Rb8 31.Nxc7 Rf8 32.Rxf8 Rxf8+ 33.Ke4 Rf5 34.Ne6 Bxe5 35.Rb1 Bd6 36.Rb7 Rf2 37.Rxa7 h4 38.c7 Bxc7 39.Rxc7 h3 40.Rc8 Kh5 41.Rh8+ Kg4 42.Rg8 h2 43.Rxg6+ Kh5 44.Rg5+ Kh6 45.Ke3 h1=Q 46.Kxf2 Qh4+ 47.Ke3 Qxc4 48.a3 Qc3+ 49.Ke4 Qxa3 50.Rg8 Qb4+ 51.Kf5 Qb1+ 52.Ke5 Qe1+ 53.Kf5 Qf2+ 54.Ke5 Qe3+ 55.Kf5 Qd3+ 56.Ke5 Qe3+ 57.Kf5 Qf3+ 58.Ke5 Qf6+ 59.Ke4 c4 60.Rc8 Qh4+ 61.Kf5 Qf2+ 62.Ke4 Qe2+ 63.Kf5 Qd3+ 64.Ke5 Qg3+ 65.Kf5 Qf3+ 66.Ke5 Qe3+ 67.Kf5 Qf3+ 68.Ke5 Qf6+ 69.Ke4 Qg6+ 70.Ke5 Qf6+ 71.Ke4 c3 72.Nd4 Qg6+ 73.Ke5 Qf6+ 74.Ke4 Qg6+ 75.Kf4 Qg5+ 76.Kf3 Qxd5+ 77.Ke3 e5 78.Nf5+ Kg5 79.Ng3 Qd4+ 80.Kf3 Qd3+ 81.Kf2 c2 82.Ne2 e4 83.Rc3 Qxc3 0-1
2022.11.03 Asian Continental Blitz
1137656 IM Koustav, Chatterjee (2496) GM Mendonca, Leon Luke (2565) 0-1
1.Nf3 Nf6 2.c4 b6 3.d4 Bb7 4.g3 e6 5.Bg2 Be7 6.O-O O-O 7.Re1 Qc8 8.Nc3 Ne4 9.Bd2 d6 10.Nxe4 Bxe4 11.Bc3 Qb7 12.Bh3 Nd7 13.Nd2 Bg6 14.Bg2 c6 15.b4 b5 16.cxb5 Qxb5 17.a4 Qb7 18.b5 d5 19.e4 Nf6 20.e5 Nd7 21.bxc6 Qxc6 22.Rc1 Rfc8 23.h4 h6 24.h5 Bh7 25.Nf3 Qb6 26.a5 Qb7 27.Qd2 Rc7 28.Bb2 Rac8 29.Rxc7 Rxc7 30.Rc1 Rxc1+ 31.Qxc1 Bb4 32.a6 Qxa6 33.Qc7 Nf8 34.g4 Qa5 35.Qc8 Qa2 36.Bc1 Qc2 37.Qxc2 Bxc2 38.Kf1 a5 39.Ne1 Bb1 40.Ke2 a4 41.Nd3 Bc3 42.Ke3 Nd7 43.Bf1 Nb6 44.Nc5 Bb4 45.Bb5 a3 46.Nb3 a2 47.Bb2 Nc4+ 48.Bxc4 dxc4 49.Nc1 c3 50.Ba1 Ba3 51.Ne2 Bb2 0-1
2022.11.02 19th Asian Continental
1137388 IM Koustav, Chatterjee (2496) GM Praggnanandhaa, R (2687) 0-1
1.d4 Nf6 2.c4 e6 3.Nf3 d5 4.g3 Bb4+ 5.Bd2 a5 6.Bg2 O-O 7.Qc2 Be7 8.O-O c6 9.Bf4 Nbd7 10.Rd1 a4 11.Ne5 h6 12.a3 Qb6 13.Nc3 Qa6 14.cxd5 exd5 15.e4 dxe4 16.Nxe4 Nxe4 17.Nxd7 Bxd7 18.Bxe4 Be6 19.d5 cxd5 20.Bxd5 Rac8 21.Qe4 Bxd5 22.Rxd5 Bf6 23.Rd6 Rc6 24.Rxc6 bxc6 25.Rc1 Rd8 26.Qc4 Qb5 27.Qxb5 cxb5 28.Rc2 Rd3 29.Kf1 Rb3 30.Bc1 g5 31.h3 Kg7 32.Ke2 h5 33.f3 Be5 34.g4 Kg6 35.Rc5 f6 36.gxh5+ Kxh5 37.f4 Bd4 38.Rd5 Bxb2 39.Be3 Bxa3 40.fxg5 Kg6 41.h4 Bb2 42.Rd6 a3 43.Ra6 Rb4 44.h5+ Kxh5 45.gxf6 Kg6 46.Kd2 Rc4 47.Kd3 Rc3+ 48.Ke2 b4 49.Ra7 Rc8 50.f7 b3 51.Bc5 a2 52.f8=Q Rxf8 53.Bxf8 Bf6 0-1
2022.11.01 19th Asian Continental
1137349 GM Aravindh, Chithambaram VR. (2625) IM Koustav, Chatterjee (2496) 0-1
1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Nxd4 Nf6 5.Nxc6 bxc6 6.Nd2 d5 7.exd5 cxd5 8.Bb5+ Bd7 9.Bxd7+ Qxd7 10.O-O Be7 11.b3 O-O 12.Bb2 Qf5 13.Re1 Bc5 14.Qf3 Qxc2 15.Bxf6 Qxd2 16.Bc3 Qc2 17.Re2 Qg6 18.Qxd5 Bb6 19.Rae1 h6 20.Qe4 Qxe4 21.Rxe4 Rad8 22.Bb4 c5 23.Bc3 Rd3 24.Rc1 Rfd8 25.Kf1 Rd1+ 26.Rxd1 Rxd1+ 27.Re1 Rd3 28.Rc1 f5 29.Ke2 Rd7 30.Bd2 Kf7 31.Be3 Rd5 32.Rc4 Ke6 33.h3 h5 34.Rc3 g6 35.Rc1 Kf7 36.Rc4 Ke6 37.f3 Kd6 38.g4 hxg4 39.fxg4 Ke6 40.g5 Re5 41.Kf3 Kd5 42.Rh4 Re6 43.Bd2 Re4 44.Rh6 c4 45.bxc4+ Rxc4 46.Rxg6 Rc2 47.Rg7 Ke6 48.Bb4 Rxa2 49.Re7+ Kd5 50.h4 Rf2+ 51.Kg3 f4+ 52.Kh3 f3 53.Rf7 Rf1 54.Ba5 Bd4 55.Rd7+ Ke4 56.Re7+ Kf5 57.Be1 f2 58.Bxf2 Rxf2 59.Rf7+ Kg6 60.Rd7 Rf4 61.Kg3 Be5 62.Re7 Kf5 63.Kh3 a5 64.Ra7 Rf3+ 65.Kg2 Rg3+ 66.Kf1 Bc3 67.Rc7 Kg4 68.Kf2 Bd4+ 69.Ke2 Kxh4 70.Rd7 Bc3 71.Rc7 Kxg5 72.Kf2 Bd4+ 73.Ke2 Kf4 0-1
2022.10.31 19th Asian Continental
1143099 IM Koustav, Chatterjee (2496) IM Antonio, V (2342) 1-0
1.d4 d5 2.Nf3 Nf6 3.c3 c5 4.dxc5 e6 5.Be3 a5 6.c4 Nbd7 7.Nc3 Bxc5 8.Bxc5 Nxc5 9.cxd5 exd5 10.e3 O-O 11.Rc1 Ne6 12.Be2 Qb6 13.Rc2 Rd8 14.Rd2 Nc5 15.O-O Be6 16.Nd4 Nfe4 17.Rc2 Rac8 18.Nxe6 fxe6 19.Nb5 Nd6 20.Nd4 e5 21.Nb3 Nxb3 22.Qxd5+ Kf8 23.Rxc8 Nxc8 24.Qf3+ Qf6 25.axb3 Rd2 26.Qxb7 Nd6 27.Qa8+ Kf7 28.Bh5+ g6 29.Bf3 Rxb2 30.Qa7+ Qe7 31.Bd5+ Kf6 32.Qxa5 e4 33.f3 Kg7 34.fxe4 Kh6 35.Qc3 Re2 36.Qd3 Rb2 37.Qc3 Re2 38.Qd3 Rb2 39.Qd4 Re2 40.Qf6 Qxf6 41.Rxf6 Ne8 42.Rf3 Nd6 43.Kf1 Rc2 44.Rf2 Rc1+ 45.Ke2 Rc2+ 46.Kf3 Rc3 47.Kf4 Nc8 48.Rf3 Rc2 49.Be6 Na7 50.g4 g5+ 51.Ke5 Nc6+ 52.Kd6 Nb4 53.Bc4 Rd2+ 54.Kc5 Nd3+ 55.Bxd3 Rxd3 56.b4 Rc3+ 57.Kd4 Rb3 58.Kc4 Rb1 59.e5 Rc1+ 60.Kb5 Rc8 61.Rf6+ Kg7 62.Rc6 Rd8 63.Kc5 Rd3 64.b5 Rxe3 65.Kd6 1-0
2022.10.30 19th Asian Continental
1143048 GM Harsha, B (2582) IM Koustav, Chatterjee (2496) 1-0
1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Nxd4 Nf6 5.Nxc6 bxc6 6.e5 Qe7 7.Qe2 Nd5 8.h4 Qe6 9.Nd2 Nb4 10.Nf3 Ba6 11.c4 d5 12.a3 Bxc4 13.Qd1 Bxf1 14.Kxf1 Na6 15.b4 Be7 16.Bg5 Bxg5 17.Nxg5 Qg6 18.e6 f6 19.Nf3 O-O 20.Rc1 Rae8 21.Rxc6 Nb8 22.Rxc7 Rxe6 23.h5 Qe8 24.Qxd5 Rf7 25.Rc1 Rd7 26.Qb3 Kf8 27.Rh4 Red6 28.Re1 Qf7 29.Qxf7+ Kxf7 30.Rf4 Re7 31.Rxe7+ Kxe7 32.Rg4 Kf7 33.Rc4 Nd7 34.Ke2 Ke6 35.Rc7 a6 36.Ke3 Kf5 37.Nd4+ Kg5 38.Rc6 Rxc6 39.Nxc6 Kxh5 40.a4 g5 41.Kd4 Kg6 42.a5 h5 43.Kc4 h4 44.b5 g4 45.bxa6 h3 46.gxh3 gxh3 47.a7 h2 48.a8=Q h1=Q 49.Ne7+ 1-0
2022.10.29 19th Asian Continental
1143004 IM Koustav, Chatterjee (2496) GM Jumabayev, R (2620) 1-0
1.d4 d5 2.Nf3 Nf6 3.c4 c6 4.g3 dxc4 5.Bg2 g6 6.a4 Bg7 7.Na3 c5 8.O-O Nc6 9.dxc5 Qa5 10.Nd4 O-O 11.Nxc6 bxc6 12.Bxc6 Rb8 13.Bf4 Qxc5 14.Bxb8 Qxc6 15.Bxa7 Bh3 16.f3 Ra8 17.Nb5 Rxa7 18.Nxa7 Qb6+ 19.Rf2 Qxa7 20.Qd8+ Bf8 21.a5 Nd7 22.g4 e6 23.e3 Qxe3 24.Qxd7 Bc5 25.Qd8+ Kg7 26.Qh4 c3 27.Qxh3 Qxf2+ 28.Kh1 cxb2 29.Rb1 Qc2 30.Qf1 Bd6 31.Qg1 Bxh2 32.Qd4+ 1-0
2022.10.28 19th Asian Continental
1142957 GM Karthikeyan, M2 (2623) IM Koustav, Chatterjee (2496) 1/2-1/2
1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.b4 Bxb4 5.c3 Ba5 6.d4 d6 7.Qb3 Qd7 8.O-O Bb6 9.Nbd2 Na5 10.Qc2 f6 11.a4 Ne7 12.Ba2 Ng6 13.Nc4 Nxc4 14.Bxc4 a6 15.Rb1 Qe7 16.Kh1 Be6 17.Bxe6 Qxe6 18.a5 Ba7 19.Rxb7 Qc4 20.Nd2 Qc6 21.Qb3 Bb6 22.dxe5 Nxe5 23.f4 Nd7 24.axb6 Qxb7 25.Qe6+ Kd8 26.Nc4 Qc6 27.e5 Re8 28.Qf7 Nxb6 29.Nxb6 Qxb6 30.Qxg7 fxe5 31.fxe5 dxe5 32.Qxh7 Kc8 33.Qe4 Rb8 34.Be3 Qe6 35.h4 Rh8 36.Bg5 Rb5 37.Kh2 Qd5 38.Qg4+ Qd7 39.Qa4 a5 40.Rd1 Rd5 41.Qe4 c6 42.Rb1 Rc5 43.c4 a4 44.Rb4 Ra5 45.c5 a3 46.Rb6 a2 47.Rxc6+ Kb8 48.Qxe5+ Kb7 49.Rb6+ Ka7 50.Rd6 Qxd6 51.Qxd6 a1=Q 52.Qb6+ 1/2-1/2
2022.10.27 19th Asian Continental
1142921 IM Koustav, Chatterjee (2496) IM Krishna Teja, N (2359) 1-0
1.d4 Nf6 2.Nf3 e6 3.Bf4 d5 4.e3 Bd6 5.Nbd2 O-O 6.c3 c5 7.Bd3 Qc7 8.Bxd6 Qxd6 9.Ne5 b6 10.f4 Ba6 11.Bc2 Nfd7 12.Qh5 f5 13.g4 Nf6 14.Qh4 cxd4 15.exd4 Ne4 16.Rg1 Qd8 17.Qh3 Bc8 18.gxf5 exf5 19.O-O-O a5 20.Rxg7+ Kxg7 21.Rg1+ Kh8 22.Qh6 1-0
2022.09.26 Chhattisgarh CM Masters
1175064 Srihari, L (2214) IM Koustav, Chatterjee (2513) 1-0
1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.c3 Nf6 5.d3 d6 6.O-O a5 7.Re1 O-O 8.h3 h6 9.Nbd2 Be6 10.Bb5 Qb8 11.Nf1 Qa7 12.Re2 a4 13.Ng3 Qa5 14.Bxc6 bxc6 15.Nh4 Kh7 16.Re1 g6 17.Nhf5 Ng8 18.Qg4 f6 19.Qh4 gxf5 20.exf5 Bd7 21.Re4 d5 22.Rg4 Rf7 23.Qh5 Raf8 24.Bxh6 Nxh6 25.Rg6 1-0
2022.09.25 Chhattisgarh CM Masters
1175007 IM Koustav, Chatterjee (2513) IM Ajay, Karthikeyan (2422) 0-1
1.d4 g6 2.Nf3 Bg7 3.c4 c5 4.e4 d6 5.d5 Nf6 6.Nc3 Bg4 7.h3 Bxf3 8.Qxf3 O-O 9.Be2 e6 10.dxe6 fxe6 11.e5 Nd5 12.Qg4 Nxc3 13.Qxe6+ Kh8 14.bxc3 Bxe5 15.Bd2 Nc6 16.O-O Qa5 17.Rfc1 Rae8 18.Qg4 Bd4 19.Be1 Bg7 20.a4 Bh6 21.Rc2 Qc7 22.Qh4 Qg7 23.g3 Ne5 24.Kg2 b6 25.Rd1 Qb7+ 26.Rd5 Bg7 27.Bd2 Nd7 28.Bg5 b5 29.a5 bxc4 30.Bxc4 Ne5 31.a6 Qf7 32.Rxe5 Qf3+ 33.Kh2 Rxe5 34.Bf1 Qf5 35.Qa4 Re1 36.Bg2 Qxg5 37.Rb2 Bxc3 38.f4 Qd8 39.Rb7 Re7 40.Qb3 Bd4 0-1
2022.09.24 Chhattisgarh CM Masters
1174962 Subhayan, Kundu (2327) IM Koustav, Chatterjee (2513) 0-1
1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.O-O Nf6 5.d3 d6 6.c3 a5 7.Re1 O-O 8.h3 h6 9.Nbd2 Be6 10.Bb3 Bxb3 11.axb3 Re8 12.Nf1 d5 13.Ng3 Qd7 14.Nxe5 Nxe5 15.d4 Nxe4 16.Nxe4 dxe4 17.dxe5 Qf5 18.Qe2 Qxe5 19.Ra4 f5 20.Bf4 Qxf4 21.Qc4+ Kh7 22.Qxc5 b6 23.Qe3 Qxe3 24.Rxe3 Rad8 25.Re2 Rd1+ 26.Kh2 Red8 27.b4 axb4 28.Rxb4 R8d2 29.Rxd2 Rxd2 30.Kg1 Rd1+ 31.Kh2 Rf1 32.Kg3 g5 33.Rc4 Kg6 34.Rc6+ Kh5 35.Rxc7 f4+ 36.Kh2 Rxf2 0-1
2022.09.23 Chhattisgarh CM Masters
1174917 IM Koustav, Chatterjee (2513) FM Ayush, Sharma (2200) 1-0
1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.a3 d5 5.cxd5 exd5 6.Nc3 c6 7.Qc2 Bd6 8.Bg5 O-O 9.e3 Nbd7 10.Bd3 h6 11.Bh4 Bb7 12.g4 Be7 13.O-O-O Nxg4 14.Bxe7 Qxe7 15.Rhg1 h5 16.h3 Nh6 17.Rg5 Nf6 18.Rdg1 Kh8 19.Ne5 Nfg4 20.hxg4 Qxg5 21.f4 Qh4 22.Qg2 Kg8 23.g5 Qh3 24.Qc2 Qh4 25.Kd1 1-0
2022.09.22 Chhattisgarh CM Masters
1174858 IM Gusain, H (2359) IM Koustav, Chatterjee (2513) 1-0
1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.e3 d5 5.b3 Bb7 6.Bd3 Nbd7 7.O-O Bd6 8.Nc3 O-O 9.Bb2 a6 10.Rc1 Qe7 11.cxd5 exd5 12.Ne2 Ne4 13.Qc2 Rac8 14.Ng3 f5 15.Qe2 Ra8 16.Rc2 Rf7 17.a4 g5 18.Rfc1 g4 19.Nd2 h5 20.Rxc7 Bxc7 21.Rxc7 Rb8 22.Nxh5 Qh4 23.Nf4 Rh7 24.Nf1 Ndf6 25.Rxh7 Qxh7 26.f3 gxf3 27.gxf3 Ng5 28.Ng3 Bc8 29.Ba3 Bd7 30.Bxa6 Kf7 31.Bd6 Rg8 32.Bb7 Bc8 33.Bc6 Be6 34.b4 Rc8 35.b5 Bd7 36.Bxd7 Nxd7 37.Be5 Nh3+ 38.Kg2 Nxf4+ 39.Bxf4 Nf8 40.Qd3 Ne6 41.Be5 Kg8 42.f4 Nf8 43.Qxf5 Rc2+ 44.Kf3 Qxh2 45.Bd6 Rf2+ 46.Kg4 Qh6 47.Qxd5+ Ne6 48.Kf5 Kf7 49.Qb7+ Kg8 50.Qc8+ Nf8 51.Qc4+ Kh7 52.Qf7+ Qg7 53.Qxf8 Qg6+ 54.Ke5 Qxg3 55.Qf7+ Kh8 56.Ke6 1-0
2022.09.21 Chhattisgarh CM Masters
1174808 IM Koustav, Chatterjee (2513) FM Panesar, Vedant (2336) 1/2-1/2
1.e4 e5 2.Bc4 Nf6 3.d3 Nc6 4.Nf3 Bc5 5.O-O a6 6.a4 Ba7 7.c3 d6 8.Re1 O-O 9.h3 Ne7 10.d4 Ng6 11.Nbd2 c6 12.Bb3 exd4 13.Nxd4 Re8 14.Bc2 d5 15.exd5 Rxe1+ 16.Qxe1 Bxd4 17.cxd4 Qxd5 18.Qe3 Bf5 19.Bb3 Qd7 20.Nf3 Nd5 21.Qg5 Re8 22.Qg3 Qd8 23.a5 Nf6 24.Be3 Ne4 25.Qh2 Be6 26.Bc2 Bd5 27.Ne5 Qe7 28.Bxe4 Bxe4 29.Nxg6 hxg6 30.Bd2 Bd5 31.Qf4 Qe4 1/2-1/2
2022.09.20 Chhattisgarh CM Masters
1174758 IM Chakravarthi Reddy, M (2306) IM Koustav, Chatterjee (2513) 0-1
1.d4 Nf6 2.c4 e6 3.Nf3 d5 4.Nc3 Bb4 5.cxd5 exd5 6.Bg5 h6 7.Bh4 g5 8.Bg3 Ne4 9.Qc2 Bf5 10.Qb3 c5 11.a3 Qa5 12.Rc1 Bxc3+ 13.bxc3 Nc6 14.e3 O-O 15.Bb5 cxd4 16.exd4 g4 17.Bxc6 bxc6 18.Ne5 Qa6 19.Qd1 Rae8 20.f3 Nxg3 21.hxg3 f6 22.Qd2 fxe5 23.Rxh6 Qb7 0-1
2022.09.19 Chhattisgarh CM Masters
1180531 IM Koustav, Chatterjee (2513) Gaurav, Rajesh Zagade (2160) 1-0
1.Nf3 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 d6 5.d4 O-O 6.Nc3 c5 7.d5 a6 8.a4 e6 9.O-O exd5 10.cxd5 Re8 11.Nd2 Nbd7 12.h3 Rb8 13.Nc4 Ne5 14.Na3 Qc7 15.f4 Ned7 16.e4 c4 17.Be3 Nh5 18.Kh2 Nc5 19.g4 Bxc3 20.bxc3 Nf6 21.e5 Nd3 22.exd6 Qd8 23.Nxc4 b5 24.axb5 axb5 25.Ne5 Nb2 26.Qb3 Nd3 27.Bd4 Rxe5 28.fxe5 Nxg4+ 29.hxg4 Qh4+ 30.Kg1 Bxg4 31.Qc2 Qg3 32.Bf2 1-0
2022.09.13 Titled Tue 13th Sep Early
1183745 GM Oparin, G (2683) IM Koustav, Chatterjee (2513) 1-0
1.c4 e5 2.Nc3 Nf6 3.Nf3 Nc6 4.e3 Bb4 5.Qc2 Bxc3 6.bxc3 O-O 7.e4 d6 8.g3 a6 9.a4 Be6 10.d3 h6 11.Bg2 Nd7 12.Nh4 Ne7 13.O-O c6 14.a5 f5 15.Ba3 Nf6 16.c5 d5 17.exf5 Nxf5 18.Ng6 Re8 19.Nxe5 Qxa5 20.d4 Ne7 21.Rfe1 Bf5 22.Qc1 Ng6 23.f3 Nxe5 24.dxe5 Nd7 25.Qf4 Be6 26.Qd4 Qc7 27.g4 Rf8 28.Bc1 Rae8 29.h3 b6 30.cxb6 Qb7 31.f4 c5 32.Qa4 Qxb6 33.Qxa6 Qc7 34.Qa7 Qc8 35.f5 Bxf5 36.gxf5 Nxe5 37.Bf4 Nd3 38.Rxe8 Rxe8 39.Bxd5+ Kh8 40.Be6 Qd8 41.Qa4 Qh4 42.Qxe8+ 1-0
2022.09.13 Titled Tue 13th Sep Early
1182497 WFM Skuhala, B (2059) IM Koustav, Chatterjee (2513) 0-1
1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Nxd4 Nf6 5.Nxc6 bxc6 6.Bd3 d5 7.exd5 cxd5 8.O-O Be7 9.c4 O-O 10.Nc3 d4 11.Ne4 Bb7 12.Nxf6+ Bxf6 13.b4 Re8 14.a4 a5 15.b5 c5 16.Qh5 g6 17.Qxc5 Be7 18.Qe5 Bb4 19.Qg5 Qd7 20.Bb2 Be4 21.Rad1 Rac8 22.Qh4 Qf5 23.Bxe4 Rxe4 24.Qg3 Rxc4 25.b6 Qd7 26.Qb8+ Rc8 27.Qg3 Bc5 28.Qb3 Re6 29.Qb5 Qxb5 30.axb5 Rxb6 31.Bxd4 Bxd4 32.Rxd4 Rxb5 33.Ra1 h5 34.g3 Rc2 35.Raa4 Rf5 36.Rf4 Rxf4 37.Rxf4 Rc6 38.Ra4 Ra6 39.Kg2 Kf8 40.g4 hxg4 41.Kg3 f5 42.Kf4 Kf7 43.Ke5 Ke7 44.Kf4 Kf6 45.f3 g5+ 46.Kg3 gxf3 47.Kxf3 Ke5 48.Ke3 Kd5 49.Kd3 Kc5 50.h4 g4 51.Rf4 Rf6 52.h5 Kd5 53.Ra4 Ke5 54.Rxa5+ Kf4 55.Ra1 Rh6 56.Rh1 Kg5 0-1
2022.09.13 Titled Tue 13th Sep Early
1183528 IM Koustav, Chatterjee (2513) IM Kosakowski, Jakub (2457) 1-0
1.d4 d5 2.Nf3 Nf6 3.Bf4 c5 4.e3 Nc6 5.Nbd2 cxd4 6.exd4 Bf5 7.Bb5 e6 8.c4 Be7 9.O-O O-O 10.c5 Rc8 11.Qa4 Ne4 12.Nb3 g5 13.Be3 g4 14.Bxc6 Rxc6 15.Ne5 Rc7 16.Bh6 Re8 17.f3 gxf3 18.Rxf3 Bg5 19.Bxg5 Nxg5 20.Rg3 f6 21.h4 Rg7 22.hxg5 fxe5 23.dxe5 Rf8 24.Qh4 Be4 25.Nd4 Qe8 26.Rf1 Rxf1+ 27.Kxf1 Qg6 28.Kg1 Rf7 29.Qh6 Re7 30.Qxg6+ hxg6 31.b4 Kf7 32.Rh3 Ke8 33.Rh8+ Kd7 34.a4 Rf7 35.b5 a6 36.Ra8 Rf4 37.Ra7 Rg4 38.Rxb7+ Kc8 39.c6 Rxg2+ 40.Kf1 Rd2 41.Nxe6 d4 42.Rc7+ Kb8 43.Rd7 axb5 44.axb5 Bf5 45.Rd8+ Ka7 46.Nxd4 Bh3+ 47.Ke1 Rd3 48.c7 Kb6 49.Nc6 Re3+ 50.Kd2 Re4 51.c8=Q Bxc8 52.Rxc8 Kxb5 53.Kd3 Re1 54.Nd4+ Kb6 55.e6 1-0
2022.09.13 Titled Tue 13th Sep Early
1184041 IM Koustav, Chatterjee (2513) GM Pap, G (2420) 0-1
1.d4 e6 2.Nf3 c5 3.c4 cxd4 4.Nxd4 Nf6 5.g3 Qc7 6.b3 a6 7.Bg2 Nc6 8.O-O Be7 9.Nc3 O-O 10.Bb2 d6 11.Rc1 Nxd4 12.Qxd4 Bd7 13.Rfd1 Rfd8 14.Ne4 Ne8 15.h4 Bc6 16.Qe3 Qa5 17.a3 Rac8 18.b4 Qf5 19.Bf3 h5 20.Ng5 Bxf3 21.exf3 Bf6 22.Bd4 Rc6 23.Ne4 Bxd4 24.Rxd4 Rdc8 25.Rcd1 Rxc4 26.Rxc4 Rxc4 27.Nxd6 Nxd6 28.Rxd6 Qb1+ 29.Kg2 Rc1 30.f4 Rg1+ 31.Kf3 Qf5 32.Rd8+ Kh7 33.Qd3 Qxd3+ 34.Rxd3 Ra1 35.Ke4 Kg6 36.Ke5 b5 37.Kd6 Rc1 38.Ke5 Re1+ 39.Kd4 Kf5 40.Kc5 e5 41.fxe5 Rxe5+ 42.Rd5 f6 43.Rxe5+ fxe5 44.Kb6 e4 45.Kxa6 Kg4 46.Kxb5 Kf3 47.a4 Kxf2 48.a5 e3 49.a6 e2 50.a7 e1=Q 51.a8=Q Kxg3 52.Qg8 Qe5+ 53.Kc4 Kxh4 54.b5 g5 55.b6 g4 56.Qd8+ Kh3 57.Qd3+ g3 58.b7 Kh2 59.Qd5 Qc7+ 60.Kd4 h4 61.Qe4 h3 62.Qe2+ g2 63.Qe5+ Qxe5+ 64.Kxe5 g1=Q 65.b8=Q Qg3+ 0-1
2022.09.13 Titled Tue 13th Sep Early
1183026 IM Koustav, Chatterjee (2513) CM Rodriguez Garcia, Yuliesky (2170) 1-0
1.d4 d5 2.Nf3 Nf6 3.Bf4 e6 4.e3 c5 5.Nbd2 Bd6 6.c3 a6 7.Bd3 Nc6 8.O-O h6 9.Bg3 b6 10.dxc5 bxc5 11.e4 Bxg3 12.hxg3 O-O 13.Qe2 c4 14.Bc2 Bb7 15.Rad1 Qb6 16.b3 cxb3 17.axb3 a5 18.Rfe1 Rfd8 19.exd5 exd5 20.Qe3 Qxe3 21.Rxe3 d4 22.cxd4 Nxd4 23.Nxd4 Rxd4 24.Nc4 Rxd1+ 25.Bxd1 Nd5 26.Re5 Nc3 27.Bc2 a4 28.bxa4 Nxa4 29.Na5 Nc3 30.Nxb7 g6 31.Nd6 Ra2 32.Bb3 Ra1+ 33.Kh2 Kg7 34.Re7 Kf6 35.Rxf7+ Ke5 36.Nc4+ Kd4 37.Ne3 Ne4 38.Nc2+ Kc3 39.Nxa1 Nxf2 40.Rxf2 1-0
2022.09.13 Titled Tue 13th Sep Early
1183842 IM Koustav, Chatterjee (2513) GM Paravyan, D (2592) 0-1
1.d4 Nf6 2.Nf3 g6 3.Bf4 Bg7 4.e3 O-O 5.h3 c5 6.Nbd2 cxd4 7.exd4 Nc6 8.c3 d6 9.Be2 e5 10.dxe5 dxe5 11.Nxe5 Nd5 12.Nxc6 bxc6 13.Bg3 Bxc3 14.Qc1 Ba5 15.O-O Ne3 16.fxe3 Bxd2 17.Qxc6 Bxe3+ 18.Kh2 Be6 19.Rad1 Qb6 20.Qf3 Bd4 21.b3 a5 22.Rd2 a4 23.Rfd1 Bg7 24.Rd6 Qb4 25.Rxe6 fxe6 26.Qe3 axb3 27.Bd6 Qxd6+ 28.Rxd6 bxa2 29.Rd1 Kh8 30.Bc4 a1=Q 31.Rxa1 Rxa1 32.Qxe6 Ra5 33.h4 Be5+ 34.Kh3 Ra3+ 35.Bb3 Bg7 36.g3 Ra1 37.Kg4 Rg1 38.Qe3 Rg2 39.h5 gxh5+ 40.Kxh5 Rh2+ 41.Kg4 Rh6 42.Bc2 Rg8 43.Bb3 Bd4+ 0-1
2022.09.13 Titled Tue 13th Sep Early
1183644 GM Grandelius, N (2651) IM Koustav, Chatterjee (2513) 1/2-1/2
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qc2 O-O 5.Bg5 h6 6.Bh4 c5 7.dxc5 Bxc5 8.e3 b6 9.Nf3 Bb7 10.Be2 Be7 11.O-O a6 12.Rfd1 d6 13.Rd2 Nbd7 14.Bg3 Nc5 15.Bh4 Rc8 16.Rad1 Nfe4 17.Bxe7 Qxe7 18.Nxe4 Nxe4 19.Rd4 d5 20.Ne5 b5 21.b3 Qc7 22.f4 Nd6 23.Qb2 Nf5 24.R4d3 bxc4 25.bxc4 Rb8 26.Rc3 Rfc8 27.Qc2 Qe7 28.cxd5 Nxe3 29.d6 Qd8 30.Rxc8 Rxc8 31.Qb3 Nxd1 32.Qxb7 Nc3 33.Qxf7+ Kh8 34.Ng6+ Kh7 35.Bd3 Qb6+ 36.Kf1 Qe3 37.Nf8+ Kh8 38.Ng6+ Kh7 39.Ne5+ Kh8 40.Ng6+ Kh7 1/2-1/2
2022.09.13 Titled Tue 13th Sep Early
1182881 GM Batsiashvili, N (2477) IM Koustav, Chatterjee (2513) 0-1
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Nf3 b6 5.e3 Bb7 6.Bd3 d6 7.O-O Nbd7 8.Qc2 O-O 9.Ne4 d5 10.Nxf6+ Nxf6 11.c5 bxc5 12.dxc5 c6 13.a3 Ba5 14.b4 Bc7 15.Bb2 Qe7 16.Ne5 h6 17.f4 Nd7 18.Rf3 Bxe5 19.fxe5 a5 20.Raf1 axb4 21.axb4 Ba6 22.Rg3 Bxd3 23.Qxd3 Rfb8 24.Qd4 Rb7 25.e4 dxe4 26.Qxe4 Nxc5 27.Qxc6 Rab8 28.Bc1 Rxb4 29.Bxh6 g6 30.Bg5 Qf8 31.Bf6 Ne4 32.Rh3 Nxf6 33.exf6 Rb1 34.Rf3 Rxf1+ 35.Rxf1 Rc8 36.Qf3 Qc5+ 37.Kh1 Qf5 38.Qe2 Qg5 39.h3 Rc1 40.Qf3 Rxf1+ 41.Qxf1 e5 42.Qf3 Kh7 43.Kh2 Kh6 44.Kh1 Qf5 45.Qe3+ Kh7 46.Qb6 Qf1+ 47.Kh2 Qf4+ 48.Kh1 e4 49.Kg1 e3 50.Qb7 Qf2+ 51.Kh2 Qf4+ 52.g3 Qxf6 53.Qe4 Qf2+ 54.Kh1 e2 55.Qh4+ Kg7 56.Qe7 e1=Q+ 0-1
2022.09.13 Titled Tue 13th Sep Early
1183403 IM Milikow, Yoav (2422) IM Koustav, Chatterjee (2513) 0-1
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Bd3 c5 6.Ne2 cxd4 7.exd4 d5 8.cxd5 exd5 9.O-O Nc6 10.Bg5 Be6 11.Nf4 h6 12.Nxe6 fxe6 13.Be3 Bd6 14.f4 Rc8 15.Kh1 Na5 16.Qe2 Re8 17.Bg1 Nc4 18.b3 Na5 19.Rac1 a6 20.Rc2 Nc6 21.Bg6 Re7 22.g3 Nd7 23.Rcc1 Nf8 24.Bb1 Rec7 25.Rcd1 Ne7 26.Na4 b5 27.Nc5 Bxc5 28.dxc5 Rc6 29.b4 a5 30.a3 axb4 31.axb4 Rb8 32.Bd3 Rc7 33.Bd4 Nc6 34.Bc3 Rcb7 35.Qg2 Qc7 36.Rfe1 Qf7 37.Bf1 Ra7 38.Ra1 Rxa1 39.Rxa1 Qb7 40.Bd3 Ra8 41.Rxa8 Qxa8 42.Qe2 Qa3 43.Qd2 Qa4 44.Be2 d4 45.Bxd4 Nxb4 46.Be5 Nc6 47.Bd6 Nd7 48.Kg1 b4 49.Bf3 b3 50.Qb2 Nd4 51.Bd1 Qc4 52.Kf2 Nxc5 53.Bxc5 Qxc5 54.Kg2 Qd5+ 55.Kh3 Qf5+ 56.Kg2 Qd3 57.Qc1 Qe4+ 58.Kh3 Qf5+ 59.Bg4 Qd3 60.Qc8+ Kh7 61.Qb8 Qc2 62.Bh5 b2 63.Bf7 Qf5+ 64.g4 Qxf7 65.Qxb2 Qxf4 66.Qb1+ g6 67.Qb7+ Kg8 68.Qb8+ Qf8 69.Qf4 Qxf4 0-1
2022.09.13 Titled Tue 13th Sep Early
1182676 IM Koustav, Chatterjee (2513) FM Decuigniere, Tom (2323) 0-1
1.d4 Nf6 2.Nf3 e6 3.Bf4 d5 4.e3 c5 5.Nbd2 Bd6 6.c3 O-O 7.Bd3 Nc6 8.Bg3 Qe7 9.Ne5 Nd7 10.Nxd7 Qxd7 11.dxc5 Bxc5 12.Nf3 h6 13.e4 Rd8 14.O-O Qe7 15.Qe2 d4 16.b4 Bb6 17.b5 Na5 18.cxd4 Bxd4 19.Nxd4 Rxd4 20.Rfd1 e5 21.Bc2 Be6 22.Rxd4 exd4 23.Qd2 Rc8 24.Bd1 Qd8 25.Be2 Nc4 26.Bxc4 Rxc4 27.Rd1 Qb6 28.Be5 Qxb5 29.Bxd4 Ra4 30.h4 Rxa2 31.Qf4 Qa4 32.Rd3 Qc2 33.Rg3 Qd1+ 34.Kh2 Qxd4 35.Qxh6 Rxf2 36.Qg5 Qf6 37.Qh5 Rf4 38.Rg5 Kf8 39.e5 Qh6 40.Qxh6 gxh6 0-1
2022.09.13 Titled Tue 13th Sep Early
1183221 IM Koustav, Chatterjee (2513) GM Svane, Rasmus (2615) 1-0
1.d4 d5 2.Nf3 e6 3.Bf4 Bd6 4.e3 Bxf4 5.exf4 Qd6 6.Qd2 Ne7 7.Nc3 b6 8.O-O-O O-O 9.h4 c5 10.h5 c4 11.Ne5 f6 12.Ng4 a6 13.h6 g6 14.g3 b5 15.Re1 Bd7 16.Bg2 b4 17.Nd1 c3 18.Qd3 cxb2+ 19.Nxb2 Nbc6 20.Ne3 Na7 21.f5 gxf5 22.g4 f4 23.Nf1 Rac8 24.g5 Ba4 25.Nxa4 f5 26.Nd2 Nb5 27.Nb3 Rc4 28.Qe2 Rfc8 29.Nac5 Nxd4 30.Nxd4 R8xc5 31.Qxe6+ Qxe6 32.Rxe6 Kf7 33.Rhe1 Rc7 34.Rxe7+ Rxe7 35.Bxd5+ Kf8 36.Rxe7 Rxd4 37.Re5 f3 38.Rxf5+ Ke7 39.Bb3 a5 40.Rf7+ Kd6 41.Rxh7 Rh4 42.Rg7 Ke5 43.Kb2 a4 44.Bxa4 Kd4 45.Bb3 Rh2 46.h7 Kc5 47.g6 Kb6 48.Rg8 Ka5 49.h8=Q Rh7 50.gxh7 Kb6 51.Qf6+ 1-0
2022.08.23 Titled Tue 23rd Aug Early
1201223 FM Kucuksari, Kaan (2398) IM Koustav, Chatterjee (2513) 1-0
1.d4 Nf6 2.c4 e6 3.g3 d5 4.Nf3 Bb4+ 5.Bd2 Be7 6.Bg2 O-O 7.O-O Nbd7 8.Qc2 Ne4 9.Nc3 Nxd2 10.Nxd2 c6 11.Rab1 Rb8 12.e3 b5 13.c5 e5 14.b4 e4 15.Nb3 Nf6 16.a4 a6 17.axb5 axb5 18.Ra1 h5 19.Ra7 h4 20.Na5 Bd7 21.gxh4 Re8 22.f3 exf3 23.Rxf3 Qc8 24.Qf2 Bd8 25.Qg3 Ra8 26.Rxa8 Qxa8 27.Bf1 Bxa5 28.bxa5 Qxa5 29.Nxb5 Ne4 30.Qc7 Qxc7 31.Nxc7 Rb8 32.Bd3 f5 33.Bxe4 fxe4 34.Rf2 Rb3 35.Re2 Bg4 36.Re1 Rb2 37.Ne8 Bf3 38.Nd6 Rg2+ 39.Kf1 Rxh2 40.Nf5 Kf7 41.Ng3 Rxh4 42.Kf2 Rh2+ 43.Kf1 Kg6 44.Ra1 Kg5 45.Ra7 Kg4 46.Rxg7+ Kh3 47.Nf5 Rh1+ 48.Rg1 Rh2 49.Rg3# 1-0
2022.08.23 Titled Tue 23rd Aug Early
1200796 IM Koustav, Chatterjee (2513) FM Pinheiro, I (2320) 1-0
1.d4 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 d5 5.Nf3 O-O 6.O-O dxc4 7.Na3 c3 8.bxc3 c5 9.Bb2 Nc6 10.Re1 Bf5 11.d5 Na5 12.c4 Be4 13.Bh3 b6 14.Nd2 Re8 15.Nxe4 Nxe4 16.Bxg7 Kxg7 17.Qc2 Nf6 18.e4 e5 19.dxe6 fxe6 20.Rad1 Qe7 21.e5 Nd7 22.Nb5 Nf8 23.Nd6 Red8 24.Bg2 Rab8 25.Rd3 a6 26.Rf3 Rd7 27.Rf7+ Qxf7 28.Nxf7 Rxf7 29.Rd1 b5 30.cxb5 Rxb5 31.a4 Rb4 32.Qxc5 Rxa4 33.h4 Ra2 34.Rf1 Nd7 35.Qd6 Nf8 36.Bh3 Nc4 37.Qd3 Nd2 38.f4 Nxf1 39.Bxf1 Rd7 40.Qb3 Ra1 41.Kf2 Rd2+ 42.Ke3 Rda2 43.Bd3 Ra3 44.Qb4 Ra4 45.Qe7+ Kg8 46.h5 gxh5 47.Qg5+ Kf7 48.Qxh5+ Ke7 49.Qg5+ Ke8 50.Qh5+ Kd8 51.Qh6 Ke8 52.Qh5+ Ke7 53.f5 exf5 54.Qxf5 R1a3 55.Qf6+ Ke8 56.e6 Nxe6 57.Qxe6+ Kd8 58.Qd6+ Kc8 59.Qf8+ Kb7 60.Qg7+ Kb6 61.Qxh7 Rb3 62.Qg6+ Ka5 63.Qf5+ Kb4 64.Qf8+ Kc3 65.Qc5+ Kb2 66.Qc2+ Ka3 67.g4 Rxg4 68.Qc5+ Ka2 69.Qd6 Rgb4 70.Qxa6+ Kb2 71.Qf6+ Ka3 72.Kd2 Rb2+ 73.Bc2 Rc4 74.Qa6+ Kb4 75.Qb6+ Ka3 76.Qa5+ 1-0
2022.08.23 Titled Tue 23rd Aug Early
1201114 IM Koustav, Chatterjee (2513) FM Martic, I SRB (2264) 1/2-1/2
1.d4 d5 2.c4 e6 3.Nf3 c5 4.cxd5 exd5 5.g3 Nc6 6.Bg2 Nf6 7.O-O cxd4 8.Nxd4 Bc5 9.Nxc6 bxc6 10.Qc2 Qb6 11.Nc3 Be7 12.e4 dxe4 13.Be3 Qa6 14.Nxe4 O-O 15.Nxf6+ Bxf6 16.Qxc6 Rb8 17.Rfd1 Qxc6 18.Bxc6 Rxb2 19.Bxa7 Bg4 20.f3 Bh3 21.f4 h5 22.a4 Rc8 23.Rac1 Rc7 24.Bf2 Re7 25.Re1 Rxe1+ 26.Rxe1 Ra2 27.Rd1 g6 28.Bb5 Bg4 29.Re1 Bf3 30.Rc1 Bb2 31.Re1 Bc3 32.Rc1 Bb2 33.Rb1 Bc3 34.Rb3 Ra1+ 35.Bf1 Be2 36.Rxc3 Bxf1 37.Be3 Bh3+ 38.Kf2 Rxa4 39.Rc7 Kf8 40.Bc5+ Ke8 41.Re7+ Kd8 42.Rxf7 Ra2+ 43.Ke3 Rxh2 44.Rg7 Bf5 45.Kf3 Rc2 46.Be7+ Ke8 47.Bf6 Rc6 48.Be5 Kf8 49.Ra7 Rb6 50.Bd4 Rb3+ 51.Kf2 Be4 52.Bc5+ Kg8 53.Bd4 Rf3+ 54.Ke2 Rxg3 55.Re7 Bf5 56.Bf6 Rg4 57.Ke3 h4 58.Rg7+ Kf8 59.Rh7 Rg3+ 60.Kd4 h3 61.Ke5 Re3+ 62.Kd4 Re4+ 63.Kd5 Rxf4 64.Be5 Ra4 65.Rh8+ Kf7 66.Rh7+ Ke8 67.Rh8+ Kd7 68.Rh7+ Kc8 69.Rh8+ Kb7 70.Rb8+ Ka7 71.Rb2 Ra5+ 72.Kd6 Ra6+ 73.Kc7 Ra4 74.Rb7+ Ka6 75.Rb6+ Ka7 76.Rb7+ Ka8 77.Rb8+ Ka7 78.Rb7+ 1/2-1/2
2022.08.23 Titled Tue 23rd Aug Early
1200627 IM Vusatiuk, V (2308) IM Koustav, Chatterjee (2513) 0-1
1.d4 Nf6 2.c4 e6 3.Nf3 d5 4.g3 dxc4 5.Qa4+ Nbd7 6.Qxc4 a6 7.Qc2 b5 8.Bg2 Bb7 9.O-O c5 10.Be3 Rc8 11.dxc5 Bxc5 12.Bxc5 Rxc5 13.Qb3 O-O 14.Nc3 Qa5 15.a4 b4 16.Na2 Rb8 17.Qxb4 Qxb4 18.Nxb4 Bxf3 19.Nxa6 Bxg2 20.Kxg2 Rxb2 21.Nxc5 Nxc5 22.a5 Rb7 23.Rfb1 Rxb1 24.Rxb1 Nfd7 25.f3 Kf8 26.e4 Ke7 27.Kf2 Kd6 28.Ke3 Ne5 29.Rc1 Nc6 30.Ra1 Na6 31.f4 f6 32.h4 Nab4 33.Rc1 Nxa5 34.Rd1+ Ke7 35.Rb1 Nac6 36.h5 e5 37.fxe5 fxe5 38.Kf3 Nd4+ 39.Kg4 Nbc6 40.Rb7+ Kf6 41.h6 gxh6 42.Rxh7 Kg6 43.Rc7 Nd8 44.Rd7 Nf7 45.Rd5 h5+ 46.Kh3 Nf3 47.Ra5 N3g5+ 48.Kh4 Nxe4 49.Ra6+ Nf6 50.Re6 e4 51.Re7 Nh6 52.Re6 Nf5+ 53.Kh3 Kg5 54.Re5 e3 55.Kg2 Ng4 56.Re8 Nf6 57.Re5 Kg6 58.Kf3 Ng4 59.Re6+ Kf7 60.Ra6 Nd4+ 61.Ke4 e2 62.Ra1 Nc2 63.Ra7+ Kf6 64.Kf4 e1=Q 65.Ra6+ Kg7 66.Kg5 Qe5+ 67.Kh4 Nf6 68.Ra7+ Kg6 69.g4 Qh2# 0-1
2022.08.23 Titled Tue 23rd Aug Early
1200884 IM Ezat, M (2391) IM Koustav, Chatterjee (2513) 1-0
1.d4 Nf6 2.c4 e6 3.Nf3 d5 4.Nc3 Bb4 5.Qa4+ Nc6 6.Ne5 Bd7 7.Nxd7 Nxd7 8.e3 Nb6 9.Qb3 dxc4 10.Bxc4 Nxc4 11.Qxc4 Qd5 12.Qxd5 Bxc3+ 13.bxc3 exd5 14.Rb1 O-O-O 15.Ke2 Rhe8 16.Kd3 Na5 17.f3 f5 18.h3 Nc4 19.g4 g6 20.gxf5 gxf5 21.Rg1 Re7 22.Rg5 Rf8 23.Bd2 c6 24.Rbg1 Kd7 25.Rg7 Rff7 26.Rxf7 Rxf7 27.Rg5 Ke6 28.Rh5 b5 29.Bc1 a5 30.Rh6+ Kd7 31.Rh5 a4 32.Rg5 Ke6 33.Rg8 Kd7 34.h4 Kd6 35.h5 Rf6 36.Rg5 Re6 37.Rxf5 Ke7 38.e4 Ke8 39.e5 Re7 40.Rg5 Rf7 41.f4 h6 42.Rg6 Rf5 43.Rxh6 Kd7 44.Rh8 Ke6 45.Ke2 Rf7 46.Kf3 Rg7 47.Rh6+ Kd7 48.Rg6 Rh7 49.h6 Ke7 50.f5 1-0
2022.07.23 Svetozar Gligoric Mem
1265079 IM Koustav, Chatterjee (2485) GM Atalik, S (2446) 1-0
1.d4 d5 2.c4 c6 3.Nc3 Nf6 4.e3 e6 5.Nf3 Nbd7 6.Qc2 b6 7.Bd3 Bb7 8.e4 dxe4 9.Nxe4 c5 10.O-O cxd4 11.Nxd4 Nc5 12.Nxc5 Bxc5 13.Nb3 Bd6 14.c5 bxc5 15.Nxc5 Bd5 16.Qa4+ Kf8 17.Be3 h5 18.h3 Ng4 19.hxg4 Bh2+ 20.Kxh2 hxg4+ 21.Kg1 Bf3 22.Nxe6+ fxe6 23.Qf4+ Kg8 24.Bg6 Qf8 25.gxf3 1-0
2022.07.22 Svetozar Gligoric Mem
1265055 FM Rohith, Krishna S (2326) IM Koustav, Chatterjee (2485) 0-1
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Bd3 c5 6.Ne2 cxd4 7.exd4 d5 8.O-O dxc4 9.Bxc4 Nc6 10.Bg5 h6 11.Bh4 Be7 12.Rc1 b6 13.a3 Bb7 14.Ba2 Nh5 15.Bxe7 Nxe7 16.Qd3 Ng6 17.f4 Qh4 18.Bb1 Rad8 19.Rf2 Nf6 20.h3 Ne7 21.Ng3 Rd7 22.Rd2 Rfd8 23.Nce2 g6 24.Rdc2 Nf5 25.Nxf5 exf5 26.Qd2 Ba6 27.Rc6 Nh5 28.Ba2 Bxe2 29.Qxe2 Nxf4 30.Qf3 Rxd4 31.Rc7 Rd3 32.Qf1 Nxh3+ 33.Kh2 Nf2+ 34.Kg1 Rd2 35.Rxf7 Qh1# 0-1
2022.07.21 Svetozar Gligoric Mem
1265007 IM Harikrishnan, A (2396) IM Koustav, Chatterjee (2485) 0-1
1.d4 Nf6 2.c4 e6 3.Nf3 d5 4.Nc3 Bb4 5.cxd5 exd5 6.Bg5 h6 7.Bh4 Nbd7 8.Qc2 g5 9.Bg3 Ne4 10.Nd2 Nxg3 11.hxg3 Nb6 12.a3 Bf8 13.e3 c6 14.Bd3 Be6 15.b4 h5 16.Nb3 Qf6 17.b5 h4 18.bxc6 bxc6 19.gxh4 gxh4 20.Ne2 Rc8 21.Nf4 Bd6 22.Nxe6 fxe6 23.Qe2 Ke7 24.Kf1 Nd7 25.e4 Qg5 26.e5 Bc7 27.Qe3 Qxe3 28.fxe3 c5 29.Bb5 cxd4 30.Bxd7 Kxd7 31.exd4 Bb6 32.Ra2 Bxd4 33.Re2 Bc3 34.Rh3 Rh5 35.Nc1 Bxe5 36.Nd3 Bg3 37.Rb2 e5 38.Rb5 e4 39.Nc5+ Kc6 40.a4 Rf5+ 41.Ke2 Rf2+ 42.Ke3 Kd6 43.Kd4 0-1
2022.07.21 Svetozar Gligoric Mem
1265029 IM Koustav, Chatterjee (2485) GM Predke, A (2688) 0-1
1.d4 Nf6 2.c4 e6 3.Nf3 d5 4.g3 Be7 5.Bg2 O-O 6.O-O c6 7.b3 b6 8.Nc3 a5 9.Nd2 b5 10.c5 e5 11.dxe5 Nfd7 12.Nf3 Nxc5 13.a3 f6 14.Bb2 Kh8 15.Rc1 a4 16.b4 Nb3 17.Rc2 Bg4 18.Nb1 Bf5 19.Rc3 fxe5 20.Nbd2 d4 21.Rxb3 axb3 22.Nxe5 Bc2 23.Qc1 Ra7 24.Ndf3 c5 25.bxc5 Bxc5 26.Rd1 Qe7 27.Rxd4 Bxa3 28.Bf1 Bxb2 29.Qxb2 Qc5 30.Nd3 Qc7 31.Nd2 Ra2 32.Qc1 b2 33.Nxb2 Qc3 34.Nf3 Rxb2 35.Qf4 Qc5 0-1
2022.07.20 Svetozar Gligoric Mem
1264983 IM Koustav, Chatterjee (2485) IM Pranav, V (2512) 1-0
1.Nf3 Nf6 2.c4 e6 3.g3 a6 4.Bg2 b5 5.b3 Bb7 6.Nc3 b4 7.Na4 Be7 8.O-O O-O 9.Bb2 d6 10.d4 Nbd7 11.d5 exd5 12.Nh4 c5 13.cxd5 Re8 14.Re1 Bf8 15.e4 g6 16.f4 Nh5 17.Qd2 Bh6 18.Qf2 f6 19.Rad1 Ng7 20.Nf3 a5 21.e5 fxe5 22.fxe5 Nb6 23.Nxb6 Qxb6 24.g4 Bf4 25.e6 Qc7 26.Re4 Nxe6 27.Rxe6 Rxe6 28.dxe6 d5 29.Be5 Bxe5 30.Nxe5 Rf8 31.Nf7 d4 32.Qf6 Bxg2 33.Qh8# 1-0
2022.07.19 Svetozar Gligoric Mem
1264936 FM Anand, Batsukh (2312) IM Koustav, Chatterjee (2485) 0-1
1.d4 Nf6 2.c4 e6 3.Nf3 d5 4.g3 Bb4+ 5.Bd2 Be7 6.Bg2 O-O 7.O-O Nbd7 8.Qc2 Ne4 9.Bf4 c6 10.Nc3 g5 11.Be3 Nd6 12.b3 Nf5 13.cxd5 Nxe3 14.fxe3 exd5 15.Bh3 Nb6 16.Bf5 Bxf5 17.Qxf5 Nc8 18.Ne5 Nd6 19.Qf3 f6 20.Nd3 f5 21.Nc5 g4 22.Qg2 Rf7 23.Ne6 Qd7 24.Nf4 Re8 25.Rad1 Bg5 26.Rd3 h5 27.h4 gxh3 28.Qxh3 Rh7 29.Ng2 Re6 30.Rf3 Qe7 31.Nd1 h4 32.Nf2 hxg3 33.Qxg3 Rg7 34.Qh2 Reg6 35.Kf1 Ne4 36.Nh3 Bh6 37.Ngf4 Bxf4 38.Qxf4 Qa3 39.Qb8+ Kh7 40.Rd1 Nd2+ 41.Ke1 Nxf3+ 42.exf3 Rg2 43.Qf4 Qa5+ 0-1
2022.07.19 Svetozar Gligoric Mem
1264960 IM Koustav, Chatterjee (2485) IM Neelash, Saha (2446) 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+ Qe6 14.Qd4 Qd6 15.Qe4+ 1/2-1/2
2022.07.18 Svetozar Gligoric Mem
1264909 IM Koustav, Chatterjee (2485) WIM Pujari, R (2244) 1-0
1.d4 d5 2.Nf3 Nf6 3.Bf4 e6 4.e3 Bd6 5.Nbd2 O-O 6.c3 c5 7.Bd3 Qc7 8.Bxd6 Qxd6 9.Ne5 b6 10.f4 Ba6 11.Bc2 Nc6 12.g4 Nd7 13.g5 cxd4 14.exd4 Ndxe5 15.fxe5 Nxe5 16.dxe5 Qxe5+ 17.Kf2 d4 18.Qf3 Qxg5 19.Ne4 Qh6 20.Rhg1 f5 21.Ng5 Bc4 22.Bb3 Bxb3 23.axb3 dxc3 24.bxc3 Rad8 25.Qe3 Rf6 26.Nf3 f4 27.Qe4 a5 28.Rad1 Rxd1 29.Rxd1 Rf8 30.Rd6 Re8 31.Rxb6 g5 32.Rb5 e5 33.Rxe5 Rxe5 34.Qxe5 Qb6+ 35.Nd4 a4 36.Qxg5+ Kh8 37.Qxf4 1-0
2022.07.17 Svetozar Gligoric Mem
1270396 FM Kostic, Brani (2169) IM Koustav, Chatterjee (2485) 0-1
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Nf3 b6 5.Bg5 Bb7 6.e3 h6 7.Bh4 g5 8.Bg3 Ne4 9.Qc2 Bxc3+ 10.bxc3 d6 11.Bd3 Nxg3 12.fxg3 Nd7 13.O-O Qe7 14.a4 a5 15.Nd2 h5 16.Be4 O-O-O 17.Bxb7+ Kxb7 18.Rab1 c5 19.Rb5 Kc7 20.Rfb1 Rb8 21.Nb3 g4 22.Qe4 f5 23.Qf4 e5 24.Qf2 h4 25.gxh4 Qxh4 26.Qxh4 Rxh4 27.g3 Rh3 28.Nd2 f4 29.exf4 exf4 30.Nf1 Re8 31.R5b2 f3 32.Rd2 Rh6 33.Rf2 cxd4 34.cxd4 Re4 35.Rd1 d5 36.Rc1 Rc6 37.Rfc2 Rxd4 38.cxd5 Rxc2 39.Rxc2+ Nc5 40.Ne3 Re4 41.Kf2 Kd7 42.Nxg4 Rxg4 43.Kxf3 Rxa4 44.h4 Ke7 45.h5 Kf6 46.Rd2 Ra3+ 47.Kf4 Rd3 48.Rb2 Nd7 49.Rb5 a4 50.g4 Rd4+ 51.Kf3 a3 52.Rb3 a2 53.Ra3 Rd3+ 0-1
2022.07.16 15th Paracin Open A 2022
1271344 IM Koustav, Chatterjee (2485) IM Anuj, Shrivatri (2383) 1/2-1/2
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Ne2 c6 6.a3 Ba5 7.c5 d6 8.b4 Bc7 9.g3 e5 10.Bg2 d5 11.dxe5 Bxe5 12.O-O Re8 13.Bb2 Nbd7 14.Qc2 Nf8 15.Rad1 Qc7 16.h3 h5 17.Rfe1 Bd7 18.f4 Bxc3 19.Nxc3 Qc8 20.Kh2 Bf5 21.e4 dxe4 22.Nxe4 Nxe4 23.Bxe4 Bxe4 24.Rxe4 Qf5 25.Qc3 f6 26.Qc4+ Kh7 27.Rde1 Rxe4 28.Rxe4 Rd8 29.Bc3 Rd1 30.Qe2 Qd5 31.f5 Qxf5 32.Qxd1 Qxe4 33.Qxh5+ Kg8 34.Qd1 Qe3 35.Qc2 Ne6 36.h4 Nc7 37.Bb2 Nd5 38.Bc1 Qf3 39.Qg2 Qg4 40.Bd2 Kh7 41.Qf1 Qe4 42.Qg2 Qd3 43.g4 f5 44.gxf5 Qxf5 45.Qe2 Nf6 1/2-1/2
2022.07.15 15th Paracin Open A 2022
1271331 CM Kushagra, Mohan (2359) IM Koustav, Chatterjee (2485) 0-1
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.a4 Bb7 9.d3 d6 10.Nbd2 Nd7 11.a5 Nb4 12.Nf1 Nc5 13.Ne3 Nxb3 14.cxb3 Re8 15.Qe2 d5 16.Nxe5 dxe4 17.dxe4 Bd6 18.f4 f6 19.Nd3 Nxd3 20.Qxd3 Rxe4 21.Rd1 Qe8 22.b4 Bxf4 23.Nc2 Bd6 24.Bd2 Qh5 25.h3 Re2 26.Ne3 Re8 0-1
2022.07.14 15th Paracin Open A 2022
1271302 IM Koustav, Chatterjee (2485) IM Ohanyan, Emin (2354) 0-1
1.Nf3 d5 2.g3 c5 3.Bg2 Nf6 4.O-O e6 5.b3 Nc6 6.Bb2 d4 7.e3 e5 8.b4 cxb4 9.a3 bxa3 10.Nxa3 Be7 11.exd4 exd4 12.Nb5 Bg4 13.Nbxd4 Nxd4 14.Bxd4 Bxf3 15.Qxf3 Qxd4 16.Qxb7 Rd8 17.Rxa7 Nd7 18.Re1 Kf8 19.Ra8 g6 20.Rxd8+ Bxd8 21.Bd5 Bb6 22.Re2 Qa1+ 23.Kg2 Qa7 24.Qc6 Qc7 25.Qa4 Nf6 26.Bf3 Kg7 27.c3 Rd8 28.Qb5 Ba7 29.Qb4 Qb6 30.Qc4 Re8 31.d4 Rxe2 32.Qxe2 Qc7 33.Qd3 h5 34.h3 Qd6 35.Qb5 Qc7 36.Qd3 Bb6 37.Ba8 Ba5 38.c4 Qd8 39.Be4 Nxe4 40.Qxe4 Bc3 41.d5 Qd6 42.Qe3 Bb4 43.Qd4+ Kg8 44.h4 Bc5 45.Qb2 Qe7 46.Qb8+ Kg7 47.Qf4 Qf6 48.Qd2 Qd4 49.Qe2 Qf6 50.Qd2 Qe5 51.Qc2 Kf6 52.Kf1 Ke7 53.Qb1 Qd4 54.Qc2 Kd6 55.Kg2 Ke5 56.Kf1 Qe4 57.Qb2+ Kf5 58.Qc3 Kg4 59.Qf6 Kh3 0-1
2022.07.13 15th Paracin Open A 2022
1271283 FM Samant, Aditya S (2431) IM Koustav, Chatterjee (2485) 1/2-1/2
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Bc5 5.c3 Nge7 6.d4 exd4 7.cxd4 Bb4+ 8.Nc3 d5 9.exd5 Qxd5 10.O-O Bxc3 11.bxc3 Bg4 12.Re1 O-O-O 13.Bb3 Bxf3 14.Qxf3 Qxf3 15.gxf3 Nd5 16.Bd2 b5 17.a4 b4 18.cxb4 Ndxb4 19.Bxb4 Nxb4 20.Bxf7 Rxd4 21.Re7 Kd8 22.Rae1 Nd3 23.R1e3 Rxa4 24.Be8 Ra1+ 25.Kg2 Nb4 26.Rd7+ Kc8 27.Rxg7 Kb7 28.Bf7 Rd1 29.Bg8 Rd6 30.Bxh7 Kb6 31.Be4 a5 32.Rc3 c6 33.Rg5 Ra8 34.Rc4 Nd5 35.Bc2 Kb5 36.Ra4 c5 37.Ra1 a4 38.Bd3+ Kb4 39.Rg4+ Kb3 40.Bc4+ Kb2 41.Ra2+ Kc3 42.Ra3+ Kb2 43.Ra2+ Kc3 44.Ra3+ Kb2 45.Ra2+ Kc1 46.Bxd5 Rxd5 47.Raxa4 Rxa4 48.Rxa4 Rd4 49.Ra7 c4 50.Rc7 Kd2 51.Kg3 c3 52.h4 c2 53.h5 c1=Q 54.Rxc1 Kxc1 55.f4 Kd2 56.Kg4 Kd3 1/2-1/2
2022.07.12 15th Paracin Open A 2022
1271227 IM Koustav, Chatterjee (2485) GM Praggnanandhaa, R (2648) 0-1
1.c4 e5 2.Nc3 Nf6 3.Nf3 Nc6 4.e3 Bb4 5.Qc2 Bxc3 6.Qxc3 Qe7 7.d4 e4 8.Nd2 d5 9.b3 O-O 10.h3 a5 11.Be2 Re8 12.Bb2 Be6 13.O-O Qd7 14.f3 Bf5 15.f4 Nb4 16.Kh2 Nd3 17.Qc2 Ra6 18.Bc3 h5 19.Qd1 h4 20.a3 Bg6 21.Ra2 a4 22.bxa4 dxc4 23.Rc2 Rxa4 24.Nb1 Nd5 25.Bd2 Bf5 26.Bg4 b5 27.Qe2 Ra6 28.Rg1 Bxg4 29.hxg4 Nf6 30.f5 Nf2 31.Rf1 N6xg4+ 32.Kg1 Qd6 0-1
2022.07.11 15th Paracin Open A 2022
1271151 IM Koustav, Chatterjee (2485) FM Sharan, R (2342) 1-0
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.cxd5 exd5 5.Bg5 Nbd7 6.e3 c6 7.Bd3 Bd6 8.Nf3 h6 9.Bh4 O-O 10.O-O Re8 11.Qc2 Nf8 12.h3 a6 13.a3 N8d7 14.Rae1 Qc7 15.e4 g5 16.e5 gxh4 17.exd6 Qxd6 18.Qc1 Kg7 19.Nxh4 Nf8 20.Rxe8 Nxe8 21.Re1 Bd7 22.Re5 Qf6 23.Rh5 Nd6 24.Ne2 Ne6 25.Nf3 Rd8 26.Ne5 Nf8 27.Ng3 Be6 28.Rf5 Qxf5 29.Bxf5 Nxf5 30.Ng4 Rd6 31.Qf4 1-0
2022.07.09 15th Paracin Open A 2022
1277392 IM Koustav, Chatterjee (2485) FM Han, Yichen (2286) 1-0
1.Nf3 Nf6 2.c4 c6 3.g3 d5 4.Bg2 dxc4 5.O-O Nbd7 6.Na3 Nb6 7.Ne5 Be6 8.Qc2 Qd4 9.Nxc6 bxc6 10.Bxc6+ Bd7 11.Bxa8 Nxa8 12.Nxc4 Nb6 13.d3 Nxc4 14.dxc4 e6 15.Be3 Qg4 16.Rfd1 Qh3 17.Qb3 Be7 18.Rxd7 Nxd7 19.Rd1 f5 20.Qb5 O-O 21.Rxd7 Bf6 22.c5 g5 23.c6 f4 24.Bc5 Qf5 25.Qd3 Qxd3 26.exd3 Rc8 27.c7 1-0
2022.07.09 15th Paracin Open A 2022
1277407 IM Djordjevic, Vu (2382) IM Koustav, Chatterjee (2485) 0-1
1.d4 Nf6 2.Bg5 d5 3.Bxf6 gxf6 4.e3 c5 5.dxc5 Nc6 6.c4 d4 7.exd4 Qxd4 8.Nc3 Qxc5 9.Nd5 e6 10.Nc3 Bg7 11.Nf3 f5 12.Be2 O-O 13.O-O e5 14.Nd2 Rd8 15.Nd5 Be6 16.Nb3 Qf8 17.Qd2 a5 18.Rad1 a4 19.Na1 b5 20.b3 axb3 21.Nxb3 bxc4 22.Bxc4 Bxd5 23.Bxd5 Ne7 24.Bxf7+ Kxf7 25.Qe2 Kg8 26.Nc5 Qf7 27.a4 Nd5 0-1
2022.07.08 15th Paracin Open A 2022
1277374 Vaibhav, Jayant Raut (2169) IM Koustav, Chatterjee (2485) 0-1
1.c4 e5 2.g3 c6 3.Nf3 e4 4.Nd4 d5 5.cxd5 Qxd5 6.e3 Bc5 7.Nc3 Qe5 8.d3 exd3 9.Qxd3 Nf6 10.Nf3 Qh5 11.Bg2 Bh3 12.O-O Nbd7 13.Bxh3 Qxh3 14.Rd1 O-O-O 15.Qf1 Qh5 16.Kg2 g5 17.b3 g4 18.Nh4 Ne5 19.Bb2 Ng6 20.Qc4 Nxh4+ 21.gxh4 Qf5 22.Kg1 Bd6 23.Qf1 Be5 24.Na4 Ne4 25.Qe2 Bxb2 26.Qxb2 b5 27.Nc3 Qf6 28.Rd4 Rxd4 29.exd4 Qxd4 30.Rc1 g3 31.hxg3 Nxg3 32.Kg2 Nf5 33.Qe2 Qf4 34.Rg1 Rd8 0-1
2022.07.06 Serbia Open 2022
1278393 IM Koustav, Chatterjee (2485) GM Motylev, A (2632) 1/2-1/2
1.d4 d5 2.Nf3 Nf6 3.c4 e6 4.g3 Be7 5.Bg2 O-O 6.O-O c6 7.b3 b6 8.Nc3 Ba6 9.Qd3 b5 10.cxb5 cxb5 11.Nxb5 Nc6 12.a4 Nb4 13.Qb1 Qb6 14.Ba3 Rfc8 15.Rc1 Bxb5 16.axb5 Qxb5 17.Qb2 a5 18.Bf1 Qb7 19.e3 g6 20.Ne5 Ne4 21.Nd3 Rxc1 22.Rxc1 Rc8 23.Rxc8+ Qxc8 24.Qc1 Qxc1 25.Nxc1 Kf8 26.Bb2 f5 27.Bb5 g5 28.h3 h5 29.Nd3 Nxd3 30.Bxd3 Nd2 31.Bc2 g4 32.hxg4 hxg4 33.Bc3 Nf3+ 34.Kf1 Bb4 35.Bxb4+ axb4 36.Ke2 Ke7 37.Bd3 Ng5 38.Bb1 Kf7 39.Bc2 Kg6 40.Bb1 Nf3 41.Bc2 Kf6 42.Bd3 e5 43.dxe5+ Kxe5 44.Bc2 Ng5 45.Bb1 Ne6 46.Bd3 Nc5 47.Bc2 Ne4 48.Bd3 Nd6 49.Kd2 Nb7 50.Bb1 Nc5 51.Bc2 Ne6 52.Bb1 Nc5 53.Bc2 Kf6 54.Ke2 Ke6 55.Kd2 Ke5 56.Ke2 Ne6 57.Bb1 Ng5 58.Bd3 Ne4 59.Bc2 Nc5 60.Kd2 Kf6 61.Ke2 Ke6 62.Kd2 Ke5 63.Ke2 Ne4 64.Bd3 Nf6 65.Kd2 Ng8 66.Ke2 Ne7 67.Bb5 Nc8 68.Bd3 Nd6 69.Kd2 d4 70.Ke2 Kd5 71.Kd2 Ne4+ 72.Ke2 Nd6 73.Kd2 Ke5 74.Ke2 Ne4 75.Bxe4 Kxe4 76.exd4 Kxd4 77.Kd2 Ke4 78.Ke2 Kd4 79.Kd2 1/2-1/2
2022.07.05 Serbia Open 2022
1278353 IM Shahil, Dey (2402) IM Koustav, Chatterjee (2485) 0-1
1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.O-O Nf6 5.d3 d6 6.c3 a5 7.Bg5 h6 8.Bh4 Ba7 9.Re1 Ne7 10.d4 Ng6 11.Bg3 Qe7 12.Qa4+ Bd7 13.Qxa5 O-O 14.Qb4 Nh5 15.Nbd2 b5 16.Bf1 c5 17.Qb3 c4 18.Qd1 Bg4 19.h3 Bxf3 20.Nxf3 Nxg3 21.fxg3 exd4 22.Nxd4 Qe5 23.Kh2 Qc5 24.Be2 Rfe8 25.Rf1 b4 26.Nf5 bxc3 27.bxc3 Rxe4 28.Bh5 d5 29.Qd2 Ne5 30.Rad1 Rd8 31.Rf4 Rxf4 32.Qxf4 Bb8 33.Rf1 Qf8 34.Nd4 g6 35.Be2 Nc6 36.Qf2 Nxd4 37.Qxd4 Qe7 38.Bf3 Qg5 39.Qg4 Qe5 40.Qh4 g5 41.Qxh6 Qxg3+ 42.Kg1 Re8 43.Bxd5 Qh2+ 44.Kf2 Ba7+ 0-1
2022.07.04 Serbia Open 2022
1278303 IM Koustav, Chatterjee (2485) WGM Injac, Teodora (2372) 1/2-1/2
1.c4 e5 2.Nc3 Bb4 3.Nd5 a5 4.a3 Bc5 5.Nf3 d6 6.e3 c6 7.d4 Ba7 8.Nc3 Nd7 9.Be2 Ngf6 10.b4 O-O 11.Bb2 Re8 12.d5 cxd5 13.cxd5 Nb6 14.bxa5 Nbd7 15.Nd2 e4 16.a4 Nc5 17.Nc4 Bg4 18.O-O Bxe2 19.Qxe2 Nb3 20.Rab1 Nxa5 21.Nxa5 Qxa5 22.Nb5 Bc5 23.Bxf6 gxf6 24.Qg4+ Kh8 25.Qd7 Qd8 26.Qxf7 Qe7 27.Qxe7 Rxe7 28.Ra1 f5 29.g3 Kg7 30.Rfd1 Ra5 31.Nc3 Kf6 32.Rab1 b6 33.Rb5 Ra8 34.Kg2 Ke5 35.Kh3 Rg7 36.Rdb1 Ra6 37.Ra1 Ra8 38.Rab1 Ra6 39.Kh4 Rg6 40.Kh5 Kf6 41.a5 Rg5+ 42.Kh4 Rg4+ 43.Kh3 Rxa5 44.Rxb6 Bxb6 45.Rxb6 Rg6 46.Kg2 Rc5 47.Ne2 Rxd5 48.Nf4 Rd1 49.Rb7 Rg8 50.Rxh7 Ra8 51.Rh6+ Kg7 52.Rg6+ Kf7 53.Rg5 Kf6 54.Rg6+ Kf7 55.Rh6 Kg7 56.Rh5 Kf6 57.Kh3 Ra2 58.Kh4 Rxf2 59.Rh6+ Ke7 60.Kg5 Rh1 61.h4 Rf3 62.Kxf5 Rxg3 63.Rh7+ Kd8 64.Kxe4 Re1 65.Nd5 Rh3 66.h5 Ke8 67.Kf4 Kf8 68.Rh6 Kg7 69.Rg6+ Kf7 70.Rg5 Reh1 71.Rf5+ Kg7 72.Rg5+ Kf7 73.Rf5+ Kg7 74.Rg5+ 1/2-1/2
2022.07.03 Serbia Open 2022
1284567 CM Kushagra, Mohan (2359) IM Koustav, Chatterjee (2485) 1/2-1/2
1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.d4 exd4 5.e5 Ne4 6.Qe2 Nc5 7.c3 d3 8.Qe3 Be7 9.O-O d5 10.exd6 cxd6 11.Rd1 O-O 12.b4 d5 13.Bb5 Ne6 14.Bxd3 Bf6 15.b5 Nb4 16.Bf5 Re8 17.Qd2 Nc5 18.cxb4 Bxf5 19.bxc5 Bxa1 20.Nc3 Rc8 21.Qd4 Qc7 22.Be3 Rxe3 23.fxe3 Bxc3 24.Qxc3 Qxc5 25.Qe5 Be4 26.Nd4 Qa3 27.Qg3 h6 28.h4 Qxa2 29.Rf1 a5 30.Rf2 Qa3 31.b6 Qe7 32.Nb5 Rc1+ 33.Kh2 Rc6 34.Na7 Rg6 35.Nc8 Qd8 36.Qc7 Qxh4+ 37.Kg1 Rf6 38.Rxf6 gxf6 39.Nd6 Qe1+ 40.Kh2 Qh4+ 41.Kg1 1/2-1/2
2022.07.02 Serbia Open 2022
1284526 IM Koustav, Chatterjee (2485) IM Anuj, Shrivatri (2383) 1-0
1.d4 Nf6 2.Nf3 g6 3.b3 Bg7 4.Bb2 O-O 5.e3 d6 6.Be2 c5 7.c4 cxd4 8.Nxd4 Nc6 9.O-O Bd7 10.Nc3 Qa5 11.a3 Rfc8 12.b4 Qd8 13.Nf3 Bf5 14.Qb3 Ne4 15.Nxe4 Bxb2 16.Qxb2 Bxe4 17.Rac1 Qf8 18.c5 dxc5 19.Rxc5 Qg7 20.Qc1 Rd8 21.Ng5 Bd3 22.Bxd3 Rxd3 23.b5 Na5 24.Rd1 Rxd1+ 25.Qxd1 b6 26.Rd5 h6 27.Nf3 Qb2 28.h4 e6 29.Rd2 Qxb5 30.a4 Qc5 31.Rd7 Nc4 32.Qa1 Qc6 33.Re7 Re8 34.Rxa7 Ra8 35.Nd4 Qc8 36.Nxe6 1-0
2022.07.01 Serbia Open 2022
1284486 IM Tomazini, Z (2361) IM Koustav, Chatterjee (2485) 0-1
1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.d3 Nf6 5.Bb3 d6 6.c3 a5 7.a4 Ba7 8.Nbd2 O-O 9.Nf1 d5 10.exd5 Nxd5 11.Ng3 f6 12.d4 exd4 13.O-O Be6 14.Re1 Qd7 15.cxd4 Rfe8 16.Ne4 Bf7 17.Nc5 Rxe1+ 18.Qxe1 Bxc5 19.dxc5 Ndb4 20.Qc3 Qd3 21.Bxf7+ Kxf7 22.Bf4 Re8 23.Rc1 Qxc3 24.Rxc3 Nd5 25.Rc4 Nxf4 26.Rxf4 Re2 27.g3 Ke6 28.b4 axb4 29.Nd4+ Nxd4 30.Rxd4 b3 31.Rb4 b2 32.Kg2 Kd5 33.Rxb7 Kc4 34.a5 Kc3 35.a6 Re1 36.a7 Ra1 37.c6 Kc2 0-1
2022.06.29 Serbia Open 2022
1284373 IM Padmini, R (2374) IM Koustav, Chatterjee (2485) 1-0
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 f5 5.d4 exd4 6.e5 b5 7.Bb3 Bb7 8.O-O Na5 9.Nxd4 c5 10.Nxf5 c4 11.Re1 Qb6 12.Nd6+ Bxd6 13.exd6+ Kf8 14.Nc3 Nf6 15.Be3 Qc6 16.f3 Re8 17.Qd2 Ba8 18.a4 b4 19.Ba2 bxc3 20.Qxc3 Nd5 21.Qd4 Nxe3 22.Rxe3 Rxe3 23.Qf4+ Kg8 24.Qxe3 Qxd6 25.Qe8+ Qf8 26.Qe5 Qd8 27.Re1 h5 28.b4 cxb3 29.cxb3 d5 30.Qe6+ Kf8 31.Qf5+ Kg8 32.Qe6+ Kf8 33.Bb1 Rh6 34.Bg6 Rxg6 35.Qxg6 Bc6 36.Qf5+ Kg8 37.Qe6+ Kh7 38.Re5 g6 39.Qf7+ Kh6 40.Re6 1-0
2022.06.28 Serbia Open 2022
1284335 IM Koustav, Chatterjee (2485) IM Leskur, D (2265) 1-0
1.d4 g6 2.Nf3 Bg7 3.c4 f5 4.g3 Nf6 5.Bg2 O-O 6.O-O d6 7.Nc3 c6 8.d5 Bd7 9.Nd4 Qb6 10.Rb1 a5 11.e3 Na6 12.Nce2 cxd5 13.cxd5 Nb4 14.Nc3 Rfc8 15.a3 Na6 16.Nce2 Nc7 17.Nf4 Ne4 18.Qd3 Nc5 19.Qe2 Nb5 20.Bd2 Nxd4 21.exd4 Nb3 22.Bc3 Re8 23.Rbd1 Qb5 24.Qe3 Rac8 25.h4 Bh6 26.h5 Qc4 27.Qf3 Kf7 28.Ne6 b5 29.hxg6+ hxg6 30.g4 Bxe6 31.dxe6+ Kxe6 32.Rfe1+ Kd7 33.Bf1 Qc6 34.d5 Qb6 35.Qe2 Rb8 36.Qe6+ Kc7 37.Qxg6 b4 38.Bf6 Nd2 39.Kg2 Bf4 40.Qxf5 exf6 41.Rc1+ 1-0
2022.03.13 MPL 50th National Junior
1409664 IM Koustav, Chatterjee (2466) GM Iniyan, P (2516) 1/2-1/2
1.e4 c5 2.Nf3 d6 3.Bb5+ Nd7 4.Nc3 Nf6 5.O-O e6 6.d4 Be7 7.a4 cxd4 8.Nxd4 O-O 9.Re1 a6 10.Bf1 Qc7 11.a5 b5 12.axb6 Nxb6 13.Nb3 d5 14.exd5 Nfxd5 15.Nxd5 Nxd5 16.c4 Nb4 17.Qf3 Nc2 18.Qxa8 Bb7 19.Qa7 Nxa1 20.Bf4 Qxf4 21.Qxb7 Nxb3 22.Qxe7 Qd2 23.Re2 Qd1 24.Qb4 a5 25.Qa4 Rb8 26.Re3 g6 27.h4 Kg7 28.Rf3 h5 29.c5 Qd4 30.Qc6 Nxc5 31.Qc7 Rb7 32.Qxa5 Ne4 33.Qa3 Rxb2 34.Qe7 Nd6 35.g3 Rb1 36.Qc7 Qd1 37.Qc3+ Kg8 38.Qd3 Ne4 39.Qxd1 Rxd1 40.Rd3 Rb1 41.Kg2 Rb2 42.Rf3 Kg7 43.Bd3 Nf6 44.Re3 Rb3 45.Be2 Rxe3 46.fxe3 Nd5 47.Kf3 Kf6 48.Bb5 Ke5 49.Bc6 Nf6 50.Ba4 Ne4 51.Be8 Nd6 52.Bc6 Nc4 53.Be8 Kd5 54.Ba4 Nd2+ 55.Ke2 Ne4 56.Kf3 Nf6 57.Ke2 Kc4 58.Bc6 Ng4 59.Be8 Ne5 60.Kd2 Kb3 61.Bb5 Kb4 62.Be8 Nc4+ 63.Kd3 Nd6 64.Bd7 Kc5 65.Ke2 Nc4 66.Be8 Ne5 67.Kd2 Kb4 68.Ke2 Kc3 69.Ba4 Nc4 70.Be8 Nd6 71.Ba4 Nf5 72.Kf3 Kd2 73.e4 Ne3 74.e5 Ng4 75.Ke4 Ke2 76.Be8 Nxe5 77.Kxe5 1/2-1/2
2022.03.12 MPL 50th National Junior
1409645 IM Koustav, Chatterjee (2466) Utsab, Chatterjee (2324) 0-1
1.d4 d5 2.c4 e6 3.Nf3 Nf6 4.Nc3 Be7 5.Bf4 O-O 6.a3 Ne4 7.Qc2 Nxc3 8.Qxc3 c6 9.e3 h6 10.Bg3 a5 11.Bd3 dxc4 12.Qxc4 b5 13.Qc2 Qb6 14.Rc1 Bb7 15.Ne5 Bf6 16.O-O Rc8 17.Bh7+ Kf8 18.Nxf7 Kxf7 19.Bd6 Ke8 20.Qg6+ Kd7 21.Bc5 Qd8 22.Qf7+ Be7 23.Bg8 Qf8 24.Qxe6+ Kc7 25.Bf7 Bd6 26.Rfd1 Rd8 27.b4 axb4 28.axb4 Na6 29.Qb3 Qe7 30.Bg6 Bc8 31.Bd3 Be6 32.Qb2 Kb7 33.e4 Nxc5 34.bxc5 Bxh2+ 35.Kxh2 Ra2 36.Qxa2 Bxa2 37.d5 cxd5 38.Bxb5 Qxe4 39.Re1 Qh4+ 40.Kg1 Rf8 41.Rc2 Bc4 42.Bd7 Kc7 43.c6 Qf6 44.Re3 Ra8 45.Rg3 Ra1+ 46.Kh2 Qh4+ 47.Bh3 Qf4 48.Rc3 g5 49.Rf3 Qc1 50.Rf7+ Kxc6 51.Rgf3 h5 52.R3f6+ Kc5 53.Kg3 Ra3+ 0-1
2022.03.12 MPL 50th National Junior
1409656 IM Manish Anto, Cristiano F (2236) IM Koustav, Chatterjee (2466) 0-1
1.d4 Nf6 2.c4 e6 3.Nf3 d5 4.Nc3 Bb4 5.cxd5 exd5 6.Bg5 h6 7.Bh4 Nbd7 8.Qc2 g5 9.Bg3 Ne4 10.Nd2 Nxg3 11.hxg3 c6 12.e4 Nf6 13.e5 Ng4 14.a3 Be7 15.Qd3 h5 16.f3 Nh6 17.Rxh5 Qb6 18.O-O-O Bf5 19.Rxh6 Bxd3 20.Rxh8+ Bf8 21.Bxd3 Qxd4 22.Kc2 Qxe5 23.Rg8 O-O-O 24.f4 gxf4 25.gxf4 Qxf4 26.Rf1 Qc7 27.Bg6 Bh6 28.Bxf7 Rxg8 29.Bxg8 Qg3 30.Be6+ Kb8 31.Bh3 Qe3 32.Ncb1 Qc5+ 33.Kd1 a5 34.b3 Qd4 35.Bf5 c5 36.a4 b5 37.axb5 a4 38.bxa4 c4 39.Kc2 Bg7 40.Rf3 Qb2+ 41.Kd1 c3 42.Nxc3 Bxc3 43.Nb1 Ba5 44.g4 Qb4 45.Ra3 Qe1+ 46.Kc2 Qe2+ 47.Kc1 Qc4+ 48.Kd1 Kc7 49.Re3 Qxa4+ 50.Ke2 Qxb5+ 51.Kd1 Qf1+ 52.Kc2 Qf2+ 53.Kd3 Kd6 54.Re8 Qf1+ 55.Kc2 Qc4+ 56.Kd1 Qa4+ 57.Bc2 Qxe8 58.Bf5 Qe3 59.Kc2 Kc5 60.Kd1 Qf2 61.Kc1 Qe2 62.Na3 d4 0-1
2022.03.11 MPL 50th National Junior
1409631 IM Koustav, Chatterjee (2466) FM Rohith, Krishna S (2304) 1-0
1.c4 e6 2.g3 Nf6 3.Bg2 d5 4.Nf3 Be7 5.O-O O-O 6.d4 b6 7.cxd5 exd5 8.Nc3 Bb7 9.Bf4 Na6 10.Rc1 Ne4 11.Nxe4 dxe4 12.Ne5 c5 13.dxc5 Nxc5 14.Qc2 Rc8 15.Qb1 Qd5 16.Rfd1 Qe6 17.b4 Na6 18.Rd7 Rxc1+ 19.Qxc1 Rc8 20.Qd1 Ba8 21.Bh3 Qxh3 22.Rxe7 e3 23.f3 Nxb4 24.Rxa7 Bd5 25.Rd7 h6 26.g4 Nxa2 27.Bxe3 Nc3 28.Qd3 Qh4 29.Bf2 Qf6 30.Bd4 Be6 31.Nc6 Qh4 32.Ne7+ Kf8 33.Nxc8 Bxd7 34.Qxc3 Bxg4 35.Bxg7+ Kg8 36.Bf6 Qh5 37.fxg4 Qxg4+ 38.Qg3 1-0
2022.03.11 MPL 50th National Junior
1409638 Hari, Madhavan N B (2380) IM Koustav, Chatterjee (2466) 0-1
1.Nf3 d5 2.c4 d4 3.b4 Bg4 4.Qb3 Bxf3 5.exf3 Nd7 6.d3 e5 7.g3 a5 8.b5 Bb4+ 9.Nd2 Nc5 10.Qc2 f5 11.Bh3 Qf6 12.O-O Ne7 13.Nb3 Ne6 14.Bd2 Bxd2 15.Nxd2 Nc5 16.Nb3 Qd6 17.Rfe1 O-O 18.Nxc5 Qxc5 19.Re2 a4 20.Bg2 c6 21.Rae1 Ng6 22.h4 h5 23.bxc6 bxc6 24.f4 exf4 25.Re6 Rf6 26.Bxc6 Rc8 27.Bd7 Rc7 28.Qxa4 fxg3 29.fxg3 Nf8 30.Rxf6 gxf6 31.Be6+ Kg7 32.Bd5 Qd6 33.Kf2 f4 34.Rg1 Kh6 35.Qe8 Rg7 36.gxf4 Qxf4+ 37.Bf3 Qxh4+ 38.Kf1 Qh3+ 39.Kf2 Qh4+ 40.Kf1 Rxg1+ 41.Kxg1 Qg3+ 42.Bg2 Ng6 43.Qe4 Ne5 44.Qf5 Ng4 45.Qf3 Qe1+ 46.Bf1 Qe5 47.Bg2 f5 48.a4 Kg5 49.Bh3 Qe1+ 50.Bf1 h4 51.Qe2 Qg3+ 52.Bg2 Qh2+ 0-1
2022.03.10 MPL 50th National Junior
1409615 IM Koustav, Chatterjee (2466) Mahendra Teja Mekala (1875) 1-0
1.e4 c5 2.Nf3 g6 3.c4 Bg7 4.d4 cxd4 5.Nxd4 Nc6 6.Be3 Nf6 7.Nc3 d6 8.Be2 O-O 9.O-O Bd7 10.f3 Nxd4 11.Bxd4 a5 12.b3 Bc6 13.Qd2 Nd7 14.Be3 Nc5 15.Rab1 Qb6 16.Rfc1 Rfc8 17.Rc2 Qd8 18.Bf1 Qf8 19.Re1 Rd8 20.Kh1 Be5 21.Qf2 f5 22.exf5 Qxf5 23.Nd5 Bxd5 24.cxd5 b6 25.Bb5 Rac8 26.Rce2 Qh5 27.Qg1 Bc3 28.Bd2 Bf6 29.Rxe7 Bxe7 30.Rxe7 Rf8 31.Qd4 Rf7 32.Bc3 1-0
2022.03.10 MPL 50th National Junior
1409622 FM Aaryan, Varshney (2277) IM Koustav, Chatterjee (2466) 1/2-1/2
1.d4 Nf6 2.c4 e6 3.Nf3 d5 4.Nc3 c5 5.cxd5 cxd4 6.Qxd4 exd5 7.e4 dxe4 8.Qxd8+ Kxd8 9.Ng5 Be6 10.Nxe6+ fxe6 11.Bg5 h6 12.O-O-O+ Ke7 13.Bxf6+ gxf6 14.Nxe4 Bg7 15.Kb1 f5 16.Ng3 Nc6 17.Bc4 Rad8 18.Rhe1 Rxd1+ 19.Rxd1 Rc8 20.Re1 Ne5 21.Bb3 Kd6 22.Rd1+ Ke7 23.Re1 Kd6 24.Rd1+ Ke7 25.Re1 Kd6 1/2-1/2
2022.03.09 MPL 50th National Junior
1409600 IM Koustav, Chatterjee (2466) Gyaneshwar B (1404) 1-0
1.Nf3 d5 2.e3 Nf6 3.c4 c6 4.Nc3 e6 5.b3 Bd6 6.d4 Nbd7 7.Bb2 O-O 8.Be2 Qe7 9.O-O b6 10.Bd3 Bb7 11.Re1 Rac8 12.Qe2 c5 13.cxd5 exd5 14.Rad1 Ne4 15.dxc5 bxc5 16.Ba6 Ndf6 17.Bxb7 Qxb7 18.Nxe4 Nxe4 19.Nh4 f5 20.f3 Ng5 21.Qd3 Rcd8 22.Nxf5 Rf7 1-0
2022.03.09 MPL 50th National Junior
1409607 Parekh, Vishrut (1747) IM Koustav, Chatterjee (2466) 0-1
1.Nf3 d5 2.d4 Nf6 3.c4 e6 4.g3 dxc4 5.Bg2 c6 6.O-O b5 7.a4 Bb7 8.Ne5 a6 9.Nc3 Bd6 10.axb5 axb5 11.Rxa8 Bxa8 12.Nxb5 cxb5 13.Bxa8 O-O 14.Bg2 Bxe5 15.dxe5 Nd5 16.Qd4 Nb4 17.Qc5 Qa5 18.Bd2 N8a6 19.Qe7 Rb8 20.Bc3 Qa4 21.Be4 Na2 22.Bc6 Rf8 23.Bd4 Qa5 24.Ra1 b4 25.Be4 b3 26.Bxh7+ Kxh7 27.Qxf8 Qc7 28.Qd6 Qb7 29.Rd1 N6b4 30.f3 Nc2 31.Qc5 Qd5 32.Qxd5 exd5 33.Kf2 Nxd4 34.Rxd4 c3 35.bxc3 b2 36.Rd1 Nc1 0-1
2022.03.03 58th ch-IND 2022
1413828 GM Lalith, B (2563) IM Koustav, Chatterjee (2466) 0-1
1.c4 Nf6 2.Nc3 e5 3.Nf3 Nc6 4.g3 Bb4 5.Qc2 O-O 6.Nd5 Re8 7.Bg2 e4 8.Ng1 Bc5 9.Nh3 Nd4 10.Qc3 Nxd5 11.cxd5 d6 12.b4 Nf3+ 13.Bxf3 Bxh3 14.Bh5 Qg5 15.Bxf7+ Kxf7 16.bxc5 Qxd5 17.Bb2 Re5 18.Qe3 Re6 19.cxd6 c5 20.d7 Rg6 21.a4 Rd8 22.a5 Rxd7 23.Bc3 h5 24.Rg1 Kg8 25.Ra4 Qb3 26.Qxe4 Re6 27.f3 Rxe4 28.Rxe4 b5 29.axb6 axb6 30.Kf2 b5 0-1
2022.03.01 58th ch-IND 2022
1413790 IM Koustav, Chatterjee (2466) IM Rathnakaran, K (2316) 1/2-1/2
1.Nf3 Nf6 2.b3 g6 3.Bb2 Bg7 4.e3 O-O 5.d4 d6 6.Be2 Nbd7 7.O-O b6 8.a4 a5 9.Nbd2 Bb7 10.Re1 Re8 11.Bb5 e5 12.dxe5 dxe5 13.e4 Re6 14.Ng5 Re7 15.Ba3 Nc5 16.Bxc5 bxc5 17.Qe2 h6 18.Ngf3 Nh5 19.g3 Qf8 20.Rad1 Kh7 21.Nh4 Bf6 22.Ng2 Ng7 23.c3 Ne6 24.h4 Bg7 25.Bc4 f5 26.Bxe6 Rxe6 27.h5 f4 28.Nh4 Raa6 29.Ndf3 fxg3 30.fxg3 gxh5 31.Nf5 Qf7 32.Rd3 Rg6 33.Red1 Qxb3 34.N3h4 Rg5 35.Nxg7 Rxg7 36.Nf5 Rf7 37.Qxh5 Rg6 38.Qh4 Qxa4 39.Re1 Qc2 40.Rf3 Qd2 41.Ree3 Rb6 42.Rf2 Qd1+ 43.Rf1 Qd2 44.Rf2 Qd1+ 45.Rf1 Qd2 46.Rf2 1/2-1/2
2022.03.01 58th ch-IND 2022
1413805 FM Aaryan, Varshney (2277) IM Koustav, Chatterjee (2466) 1/2-1/2
1.d4 d5 2.c4 e6 3.Nc3 a6 4.cxd5 exd5 5.Nf3 c6 6.Bf4 Bd6 7.Bxd6 Qxd6 8.e3 Ne7 9.Bd3 O-O 10.O-O Bf5 11.Bxf5 Nxf5 12.Qb3 Nd7 13.e4 dxe4 14.Nxe4 Qc7 15.d5 c5 16.Rac1 Rac8 17.Rfe1 b5 18.Qc2 Nd6 19.Nd4 Rce8 20.Nc6 c4 21.b3 Nb6 22.Ng5 g6 23.Qd2 Qd7 24.Qd4 Rxe1+ 25.Rxe1 Re8 26.Re5 c3 27.Qxc3 Nxd5 28.Qh3 Qxh3 29.Rxe8+ Nxe8 30.Nxh3 f6 31.f3 Kf7 32.Nf2 Ke6 33.Ne4 f5 34.Nd4+ Ke5 35.Nc6+ Ke6 36.Nd4+ Ke7 37.Nc5 Nec7 38.a4 Nb4 39.axb5 axb5 40.Nb7 Nd3 41.Kf1 Kf6 42.Nd6 b4 43.Nc4 Ne6 44.Nc2 Nec5 45.Na5 Ke6 46.Nc6 Na6 47.Ke2 Nf4+ 48.Ke3 Nxg2+ 49.Kf2 Nf4 50.N2xb4 Nc5 51.Nd4+ Ke5 52.Nbc2 Nd5 53.Nc6+ Kd6 54.N6d4 1/2-1/2
2022.02.28 58th ch-IND 2022
1420310 IM Koustav, Chatterjee (2466) GM Gukesh, D (2614) 0-1
1.e4 c5 2.Nf3 Nc6 3.Bb5 g6 4.O-O Bg7 5.c3 Nf6 6.Re1 O-O 7.d4 d5 8.e5 Ne4 9.Bxc6 bxc6 10.Be3 cxd4 11.cxd4 f6 12.Qc1 Rb8 13.exf6 exf6 14.Qxc6 Rxb2 15.Nbd2 Rb6 16.Qc2 g5 17.Nb3 Nd6 18.Nc5 Qc7 19.Qa4 Nf5 20.Nd2 Qf7 21.f3 Rd8 22.Bf2 Bf8 23.Ndb3 Bd6 24.Re2 h5 25.Rae1 Ng7 26.Na5 Bd7 27.Nxd7 Qxd7 28.Qxd7 Rxd7 29.Nb3 Rc6 30.g4 h4 31.Nc5 Bxc5 32.dxc5 Kf7 33.Rd1 Ne6 34.Red2 Ra6 35.Be3 Ra3 36.Kf2 a5 37.c6 Rc7 38.Rc2 Nd8 39.Rdc1 Ne6 40.Bb6 Rc8 41.Rd1 Nf4 42.c7 Ke8 43.Rcd2 Kd7 44.Bd4 Rxc7 45.Bxf6 Nh3+ 46.Kg2 Nf4+ 47.Kf2 Ke6 48.Bd4 Nh3+ 49.Kg2 Nf4+ 50.Kf2 Rc4 51.Re1+ Kd7 52.Re3 Rxd4 53.Rxd4 Rxa2+ 54.Kf1 Kd6 55.Re8 Kc5 56.Rd1 Rxh2 57.Rc8+ Kd6 58.Rd4 Ra2 59.Rd8+ Kc5 60.Rd1 h3 61.Kg1 Ne2+ 0-1
2022.02.28 58th ch-IND 2022
1420333 Panda, Sambit (2059) IM Koustav, Chatterjee (2466) 1/2-1/2
1.d4 e6 2.c4 d5 3.Nf3 Nf6 4.Nc3 Bb4 5.Qa4+ Nc6 6.e3 O-O 7.Qc2 Re8 8.Bd2 a6 9.a3 Bf8 10.h3 e5 11.dxe5 Nxe5 12.Nxe5 Rxe5 13.cxd5 c5 14.f4 Re8 15.Bd3 b5 16.O-O c4 17.Be2 Bb7 18.e4 Nxe4 19.Nxe4 Qxd5 20.Nf6+ gxf6 21.Bf3 Qc5+ 22.Kh1 Bxf3 23.Rxf3 Re2 24.Qd1 Qe7 25.Bb4 Qe4 26.Bc3 Be7 27.Qd7 h5 28.Rd1 Rd8 29.Qxd8+ Bxd8 30.Rxd8+ Kh7 31.Bxf6 Kg6 32.Rd6 Kf5 33.Bc3 Qb1+ 34.Kh2 h4 35.Rd5+ Ke6 36.Re5+ Rxe5 37.fxe5 a5 38.Rf6+ Kd5 39.Rd6+ Ke4 40.e6 fxe6 41.Rxe6+ Kd5 42.Re5+ Kc6 43.Re6+ Kd7 44.Re2 b4 45.axb4 a4 46.b5 Qf5 47.b6 Kc6 48.Kg1 a3 49.bxa3 Qb1+ 50.Kf2 Qf5+ 51.Kg1 Qc5+ 52.Kf1 Qf8+ 53.Rf2 Qxa3 54.Rf6+ Kb7 55.Rf3 Qc1+ 56.Kf2 Kxb6 57.Bf6 Kc5 58.Bc3 Kd5 59.Re3 Qb1 60.Re5+ Kd6 61.Re3 1/2-1/2
2022.02.27 58th ch-IND 2022
1420300 GM Karthikeyan, M2 (2622) IM Koustav, Chatterjee (2466) 0-1
1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.d3 d6 5.O-O Be7 6.Re1 O-O 7.Bxc6 bxc6 8.d4 exd4 9.Nxd4 Bd7 10.Nc3 Re8 11.Qf3 Rb8 12.b3 h6 13.h3 Bf8 14.Bf4 c5 15.Nf5 Bc6 16.Rad1 Rb4 17.Ng3 g6 18.a3 Rb8 19.Qd3 Nd7 20.Nd5 Bg7 21.Nf1 Nf6 22.Nc3 Nd7 23.Qd2 Kh7 24.Nh2 Qf6 25.Nd5 Bxd5 26.exd5 Qf5 27.Rxe8 Rxe8 28.Nf1 Nf6 29.Ng3 Qd7 30.Qd3 Re7 31.c4 Qe8 32.Be3 Ne4 33.Nxe4 Rxe4 34.Kf1 f5 35.Re1 Bd4 36.Bd2 Qe5 37.g3 h5 38.Re2 h4 39.Bf4 Rxf4 40.gxf4 Qxf4 41.Qd2 Qf3 42.Re7+ Kg8 43.Rxc7 Qxh3+ 44.Ke2 Qg4+ 45.Kf1 Qh3+ 46.Ke2 Qg4+ 47.Kf1 h3 48.Rc8+ Kg7 49.Rc7+ Kg8 50.Rc8+ Kf7 51.Rc7+ Kf6 52.Qe2 Qg2+ 53.Ke1 Be5 54.f4 Qg1+ 55.Qf1 Qe3+ 56.Qe2 Qc1+ 57.Kf2 Qxf4+ 58.Qf3 Qxf3+ 59.Kxf3 g5 0-1
2022.02.26 58th ch-IND 2022
1420267 GM Adhiban, Baskaran (2648) IM Koustav, Chatterjee (2466) 1/2-1/2
1.Nf3 d5 2.e3 Nf6 3.c4 e6 4.b3 c5 5.Bb2 Nc6 6.cxd5 exd5 7.d4 cxd4 8.Nxd4 Bb4+ 9.Bc3 Bd6 10.Nd2 O-O 11.Be2 Re8 12.O-O Bc7 13.Rc1 Qd6 14.N2f3 a6 15.Nxc6 bxc6 16.Bxf6 Qxf6 17.Qd4 Qh6 18.Bd3 a5 19.Qh4 Qxh4 20.Nxh4 Bb7 21.g3 Bd6 22.Nf5 Bf8 23.Nd4 Rec8 24.Bf5 Rc7 25.Rfd1 a4 26.Nb5 Re7 27.Nd6 axb3 28.axb3 Rd8 29.Nxb7 Rxb7 30.Rxc6 Rxb3 31.Rc7 Rb6 32.Rd7 Rd6 33.Rxd8 Rxd8 34.Be4 d4 35.exd4 Bc5 36.d5 g6 37.Kg2 Kg7 38.g4 Bd6 39.Ra1 Rb8 40.Ra2 h6 41.h4 Rb4 42.Bf3 Be7 43.h5 gxh5 44.gxh5 Rd4 45.Re2 Bd6 46.Rb2 Be7 47.Ra2 Bd6 48.Re2 Bc5 49.Be4 Bd6 50.Kf3 f5 51.Bb1 Rxd5 52.Re6 Bc5 53.Rg6+ Kh7 54.Ra6 Kg7 55.Rg6+ Kh7 56.Rc6 Bd6 57.Ba2 Rd4 58.Ke3 Re4+ 59.Kd3 Bf4 60.Rf6 Bg5 61.Rf7+ Kh8 62.Bd5 Rh4 63.Bf3 Kg8 64.Ra7 Rh2 65.Ra2 Bh4 66.Bd5+ Kf8 67.Ra6 Bg5 68.f4 Bxf4 69.Rf6+ Ke7 70.Rxf5 Bg5 71.Bf3 Rh4 72.Ra5 Kf6 73.Ra6+ 1/2-1/2
2022.02.26 58th ch-IND 2022
1420287 IM Koustav, Chatterjee (2466) GM Sethuraman, S (2619) 1-0
1.Nf3 d5 2.e3 Nf6 3.c4 e6 4.Nc3 a6 5.b3 b6 6.Bb2 Bb7 7.Be2 Nbd7 8.O-O Bd6 9.d4 O-O 10.Qc2 Qe7 11.Rad1 Rfe8 12.Rfe1 Rac8 13.cxd5 exd5 14.Bd3 Ne4 15.Qe2 Ra8 16.Rc1 f5 17.Nd2 Qf7 18.f3 Nxd2 19.Qxd2 Qh5 20.f4 Re7 21.Ne2 Qf7 22.Ng3 g6 23.h3 Rae8 24.Nf1 Re6 25.Nh2 Qe7 26.Kf2 Qh4+ 27.Kg1 Qe7 28.Kf2 Nf6 29.Nf3 Ne4+ 30.Bxe4 fxe4 31.Ne5 Rf6 32.Kg1 a5 33.Qe2 Ra8 34.a4 Ba6 35.Qg4 Bc8 36.Qg5 Re6 37.Qg3 Rf6 38.Qg5 Re6 39.Qg3 Kh8 40.Rc2 Ba6 41.Rec1 Rf8 42.Bc3 Ba3 43.Bb2 Bd6 44.Bc3 Bd3 45.Rd2 Bxe5 46.dxe5 c5 47.Kh2 Qd7 48.Qf2 Kg8 49.Rg1 Ree8 50.g4 Rd8 51.Bb2 d4 52.f5 Qd5 53.Qg3 Rfe8 54.e6 Qd6 55.Rf2 dxe3 56.Be5 Qd5 57.Rfg2 e2 58.Qf4 Re7 1-0
2021.10.27 Sheikh Russel GM 2021
1505100 GM Stany, G (2522) IM Koustav, Chatterjee (2431) 1/2-1/2
1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.d3 d6 5.c3 Be7 6.O-O O-O 7.Re1 a6 8.Ba4 b5 9.Bb3 h6 10.a4 Bd7 11.d4 Re8 12.d5 Na5 13.Bc2 c6 14.dxc6 Bxc6 15.Nbd2 Nc4 16.Nxc4 bxc4 17.Qe2 Rc8 18.Rd1 Qb6 19.Nd2 d5 20.exd5 Bxd5 21.Nf1 Ba8 22.Bf5 Qb7 1/2-1/2
2021.10.26 Sheikh Russel GM 2021
1505047 IM Koustav, Chatterjee (2431) GM Asadli, Vugar (2585) 1/2-1/2
1.e4 c5 2.Nf3 d6 3.Bb5+ Nd7 4.O-O Nf6 5.Re1 a6 6.Bd3 Ne5 7.Nxe5 dxe5 8.a4 b6 9.Na3 e6 10.b3 h5 11.Bb2 Qc7 12.Nc4 Nd7 13.Qf3 Be7 14.c3 Bb7 15.Rac1 g5 16.Qe2 Nf8 17.Bb1 Ng6 18.d4 f6 19.b4 Rd8 20.g3 h4 21.bxc5 bxc5 22.dxe5 hxg3 23.hxg3 Nxe5 24.Nxe5 Qxe5 25.Kg2 c4 26.Rh1 Rxh1 27.Rxh1 f5 28.Rh7 Rd7 29.Bc1 g4 30.Qxc4 Bf6 31.Rxd7 Kxd7 32.Kf1 fxe4 33.Qb3 Bc6 34.Bf4 Qd5 35.c4 Qd4 36.Be3 Qa1 37.Qd1+ Kc7 38.Bc2 Qc3 39.Qxg4 Qxc4+ 40.Kg1 1/2-1/2
2021.10.25 Sheikh Russel GM 2021
1510225 IM Vignesh, N R (2453) IM Koustav, Chatterjee (2431) 0-1
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qc2 O-O 5.Nf3 d5 6.Bg5 dxc4 7.e4 h6 8.Bxf6 Qxf6 9.Bxc4 c5 10.e5 Qe7 11.O-O cxd4 12.Nb5 a6 13.Nbxd4 b5 14.Bd3 Bb7 15.Bh7+ Kh8 16.Be4 Ra7 17.Rac1 Ba5 18.Bxb7 Rxb7 19.Nc6 Nxc6 20.Qxc6 Bb6 21.Rfd1 Rfb8 22.g3 Kg8 23.Kg2 a5 24.Rc3 Qb4 25.Rb3 Qc5 26.Qxc5 Bxc5 27.Rbd3 Kf8 28.Rd8+ Rxd8 29.Rxd8+ Ke7 30.Rc8 Ba7 31.Rc6 Kd7 32.Rd6+ Ke7 33.Ra6 Bb6 34.Ra8 Kd7 35.Kf1 Kc6 36.Rg8 g6 37.Rh8 Kd5 38.Ke2 a4 39.Rxh6 Rc7 40.Kd3 Rc1 41.Rh7 Rd1+ 42.Kc2 Rf1 43.Rxf7 Rxf2+ 44.Kc3 Bd4+ 45.Kd3 Bc5 46.Ng5 Rxb2 47.Ne4 Bb4 48.Rf4 a3 49.Nf6+ Kc6 50.Ng4 Rd2+ 51.Ke3 Rxa2 52.Rxb4 Rb2 53.Rd4 a2 54.Rd6+ Kb7 55.Rd7+ Kb6 56.Rd6+ Ka5 57.Rd8 Rb3+ 58.Kd2 Ra3 59.Ra8+ Kb4 60.Rxa3 Kxa3 61.Ne3 Kb2 0-1
2021.10.24 Sheikh Russel GM 2021
1510170 IM Koustav, Chatterjee (2431) GM Krasenkow, M (2578) 1/2-1/2
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 b6 11.Nb3 Bb7 12.Re1 Re8 13.Qd2 Nc8 14.Bf4 Ne5 15.Nxe5 Bxe5 16.Bxe5 Rxe5 17.Bd3 Nd6 18.f3 Rc8 19.Qb4 Qe7 20.Rac1 Rxc1 21.Rxc1 f5 22.exf5 gxf5 23.Qxd4 Rd5 24.Bc4 Nxc4 25.Qxc4 Qe3+ 26.Kf1 Bc6 27.Re1 Bb5 28.Rxe3 Bxc4+ 29.Ke1 a5 30.f4 Rb5 31.Kd2 Rb4 32.g3 d5 33.Kc2 Bxb3+ 34.axb3 Re4 35.Rc3 Re2+ 36.Kd3 Rxh2 37.Kd4 Rxb2 38.Kxd5 Re2 39.Rc8+ Kf7 40.Rb8 Kg6 41.Rg8+ Kh6 42.Rg5 Re4 43.Rxf5 Rb4 44.Ke6 Rxb3 45.g4 Kg7 46.Rf7+ Kg8 47.Ra7 Re3+ 48.Kf6 Re8 49.f5 Rf8+ 50.Ke6 Re8+ 51.Kf6 Rb8 52.g5 b5 53.g6 Rb6+ 54.Kg5 hxg6 55.f6 1/2-1/2
2021.10.23 Sheikh Russel GM 2021
1510128 Pranav, V (2489) IM Koustav, Chatterjee (2431) 0-1
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Be3 e5 7.Nb3 Be6 8.Qd2 Nbd7 9.f3 h5 10.Be2 Be7 11.O-O b5 12.a4 b4 13.Nd5 Bxd5 14.exd5 Nb6 15.Bxb6 Qxb6+ 16.Kh1 h4 17.Bd3 Nh5 18.Qf2 Qxf2 19.Rxf2 Nf4 20.Bc4 f5 21.a5 Kf7 22.Ra4 Rhb8 23.Nc1 Bd8 24.g3 hxg3 25.hxg3 Nh5 26.Kg2 Rc8 27.b3 Rc5 28.Nd3 Rxa5 29.Rxb4 Ra7 30.Rb8 Bf6 31.Rb6 Rd7 32.Rxa6 Rxa6 33.Bxa6 Ra7 34.Bc8 g6 35.Nb4 Rc7 36.Ba6 Rc3 37.Bd3 Bd8 38.Rf1 Bb6 39.Na2 Rc7 40.Bc4 Bc5 41.Nc3 Rc8 42.Rb1 Ke7 43.Nb5 Ra8 44.b4 Be3 45.c3 f4 46.g4 Ng3 47.Bb3 e4 48.c4 Rh8 49.fxe4 Nxe4 50.Ra1 Ng5 51.Rf1 Rh3 52.Bd1 Rg3+ 53.Kh2 Rh3+ 54.Kg2 Rg3+ 55.Kh2 Ne4 56.c5 dxc5 57.bxc5 Bxc5 58.d6+ Kd8 59.Re1 Nf2 60.Rf1 Rh3+ 61.Kg2 Rg3+ 62.Kh2 Rd3 63.Be2 Rd2 64.Nc3 Ne4 65.Rd1 Rc2 66.Nxe4 Rxe2+ 67.Kh3 Rxe4 68.Kh4 f3 69.Rd5 f2 70.Kg3 f1=Q 71.Kh2 Qg1+ 72.Kh3 Qxg4+ 73.Kh2 Re2+ 74.Kh1 Qg2# 0-1
2021.10.22 Sheikh Russel GM 2021
1510071 GM Shyam, SM (2518) IM Koustav, Chatterjee (2431) 1-0
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.Qd3 Qd7 11.Nc3 c6 12.Ne2 Be7 13.f4 Qf5 14.Qc3 Qe4 15.Ng3 Qb4 16.Qf3 Bd7 17.Be3 Bc5 18.c3 Bxe3+ 19.Qxe3 Qb6 20.Qd4 h5 21.h4 Bg4 22.f5 Qxd4+ 23.cxd4 a5 24.Ra3 Kd7 25.Rf4 Ra6 26.Rb3 Kc7 27.Nf1 Rb6 28.Rxb6 Kxb6 29.Ne3 Be2 30.Kf2 Bd3 31.Kg3 Kc7 32.f6 Rg8 33.fxg7 Rxg7+ 34.Kf2 Be4 35.g4 hxg4 36.Nxg4 b5 37.h5 bxa4 38.h6 Rh7 39.Rf6 Kb6 40.Ke3 Kb5 41.Nf2 c5 42.Nxe4 cxd4+ 43.Kxd4 dxe4 44.Kxe4 Kc4 45.Rb6 Kc5 46.Ra6 Kb5 47.Rd6 a3 48.bxa3 Ka4 49.Ra6 Kb5 50.Rd6 Ka4 51.Rb6 Kxa3 52.Kf5 a4 53.Kg5 Ka2 54.Kh5 a3 55.Rb8 Ka1 56.Rb7 Rh8 57.Rxf7 Re8 58.Rf5 a2 59.h7 Kb2 60.Rf2+ Kb3 61.Rxa2 Rxe5+ 62.Kg4 Re4+ 63.Kf5 Rh4 64.Ra7 Rh1 65.Ke4 1-0
2021.10.21 Sheikh Russel GM 2021
1510023 IM Koustav, Chatterjee (2431) GM Visakh, N R (2515) 1-0
1.e4 c5 2.Nf3 d6 3.Bb5+ Nd7 4.a4 Nf6 5.Nc3 g6 6.a5 Bg7 7.O-O a6 8.Be2 e5 9.d3 O-O 10.Nd2 b5 11.axb6 Nxb6 12.Nc4 Be6 13.Bg5 h6 14.Be3 Kh7 15.Qd2 Nxc4 16.dxc4 Ng4 17.Bxg4 Bxg4 18.f3 Be6 19.Rfd1 Qb8 20.Qxd6 Qxb2 21.Qd2 Qb7 22.Rdb1 Qc6 23.Nd5 Rfb8 24.Qa5 Bf8 25.Kf2 Rb7 26.Rxb7 Qxb7 27.Nc7 Rb8 28.Nxe6 fxe6 29.Bxc5 Bxc5+ 30.Qxc5 Rc8 31.Qxe5 Rxc4 32.Ra2 Qc8 33.Kg3 Rc5 34.Qd6 a5 35.h4 Rb5 36.Qe7+ Kg8 37.Qf6 Qc7+ 38.Kh3 Kh7 39.Qxe6 Rb1 40.e5 Rh1+ 41.Kg3 Qc3 42.Qd7+ Kh8 43.Qd8+ Kh7 44.Qxa5 1-0
2021.10.20 Sheikh Russel GM 2021
1509967 GM Deepan, C (2535) IM Koustav, Chatterjee (2431) 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.c3 O-O 9.h3 Nb8 10.a4 Bb7 11.axb5 axb5 12.Rxa8 Bxa8 13.Na3 c6 14.Re1 Nbd7 15.Nc2 Re8 16.Ne3 d5 17.Ng4 Nxg4 18.hxg4 Qc7 19.exd5 cxd5 20.Nxe5 Nxe5 21.Bf4 Bf8 22.Bg3 b4 23.d4 bxc3 24.Bxe5 Qc8 25.bxc3 Qxc3 26.Re3 Qb2 27.Re2 Qc3 28.Re3 Qb2 29.Qf3 Rd8 30.Qf5 Qc1+ 31.Kh2 Qc6 32.Bc2 Qg6 33.Rc3 Qxf5 34.Bxf5 Bb7 35.Rc7 Ba6 36.g5 g6 37.Bd7 h6 38.f4 hxg5 39.fxg5 Be7 40.Bf4 Kf8 41.Ra7 Bc8 42.Bxc8 Rxc8 43.Ra5 Rd8 44.Kg3 f6 1/2-1/2
2021.10.19 Sheikh Russel GM 2021
1509943 IM Koustav, Chatterjee (2431) CM Ahmed, Mah (2051) 1-0
1.Nf3 d5 2.e3 c6 3.c4 Nf6 4.Nc3 Bg4 5.cxd5 Nxd5 6.d4 e6 7.Be2 Be7 8.O-O O-O 9.h3 Bh5 10.e4 Nf6 11.Bf4 Nbd7 12.Qd2 h6 13.Rad1 Bb4 14.Qe3 Qe7 15.e5 Nh7 16.Bg3 Nb6 17.Bh4 Qd7 18.Ne4 Rfe8 19.a3 Be7 20.Bg3 Nd5 21.Qd2 Bxf3 22.Bxf3 Ng5 23.Nxg5 Bxg5 24.Qd3 Qe7 25.Qe4 Qd8 26.Be2 Be7 27.h4 g6 28.h5 Kh7 29.Rd3 Rg8 30.Rf3 Qe8 31.Bd3 Rd8 32.Kh2 Bg5 33.Qg4 Ne7 34.hxg6+ Nxg6 35.Bh4 1-0
2021.10.17 2nd Year Long GM 2021
1516797 IM Mohammad Fahad, Rahman (2330) IM Koustav, Chatterjee (2431) 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.a4 1/2-1/2
2021.10.16 2nd Year Long GM 2021
1516789 IM Koustav, Chatterjee (2431) GM Malakhatko, V (2444) 1-0
1.Nf3 d5 2.e3 Nf6 3.c4 c6 4.Nc3 a6 5.Be2 g6 6.O-O Bg7 7.d4 O-O 8.Qb3 Ra7 9.Rd1 Be6 10.a4 a5 11.Bd2 dxc4 12.Bxc4 Bxc4 13.Qxc4 Na6 14.e4 Nb4 15.Rac1 Qb6 16.Bg5 Qa6 17.Qb3 Nd3 18.Rc2 Nb4 19.Rcd2 Raa8 20.d5 cxd5 21.Bxf6 Bxf6 22.e5 Bg7 23.Nxd5 Qe6 24.Qe3 Nxd5 25.Rxd5 h6 26.h3 Rfc8 27.Rb5 Rc7 28.Rb6 Qc4 29.e6 f5 30.Ne5 Qxa4 31.b3 Qe4 32.Qxe4 fxe4 33.Nxg6 Kh7 34.Nf4 Ra6 35.Rb5 Rd6 36.Rxd6 exd6 37.Nd5 Rc1+ 38.Kh2 Be5+ 39.g3 Kg6 40.Rxb7 Rc2 41.Rf7 h5 42.Rf8 1-0
2021.10.15 2nd Year Long GM 2021
1516786 Sanket, Chakravarty (2288) IM Koustav, Chatterjee (2431) 0-1
1.e4 c6 2.c4 d5 3.cxd5 cxd5 4.exd5 Nf6 5.Nc3 Nxd5 6.Bc4 Nxc3 7.Qf3 e6 8.bxc3 Bd6 9.Ne2 O-O 10.d4 Nd7 11.Bd3 Re8 12.O-O Qc7 13.Bf4 Rb8 14.Rab1 b6 15.Rb5 Ba6 16.Bxd6 Qxd6 17.Rh5 Bxd3 18.Qxd3 Nf6 19.Rg5 Rbc8 20.Ng3 h6 21.Re5 Qa3 22.Ne2 Qxa2 23.f4 Ng4 24.Rh5 f5 25.h3 Nf6 26.Rh4 Ne4 27.g4 Qc4 28.Qd1 0-1
2021.10.14 2nd Year Long GM 2021
1516780 IM Koustav, Chatterjee (2431) Anata, Choudhury (2123) 1/2-1/2
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Qxd4 Nc6 5.Qe3 Nf6 6.Be2 g6 7.O-O Bg7 8.c4 O-O 9.Nc3 Bg4 10.Rb1 Bxf3 11.Bxf3 Nd7 12.b3 Qb6 13.Nd5 Qd8 14.Rd1 Nc5 15.b4 Na4 16.Qb3 Nb6 17.Be3 Nxd5 18.cxd5 Ne5 19.Be2 Nd7 20.Rbc1 a5 21.a3 axb4 22.axb4 Nf6 23.f3 Qd7 24.b5 Rfc8 25.b6 Qd8 26.Qb5 Nd7 27.Bf1 Rxc1 28.Rxc1 Nc5 29.Rb1 h5 30.Qb4 Ra4 31.Qd2 Qa8 32.Bg5 Bd4+ 33.Kh1 Ra1 34.Qd1 f6 35.Rxa1 Qxa1 36.Qxa1 Bxa1 37.Be3 Bc3 38.Bxc5 dxc5 39.Ba6 Ba5 40.Bxb7 Bxb6 41.Ba6 g5 42.g3 Bc7 43.Kg2 Kg7 44.Kf2 h4 45.Kg2 hxg3 46.hxg3 Be5 47.Kh3 Kf7 48.Bc4 Ke8 49.Kg4 Kd7 50.f4 gxf4 51.gxf4 Bd4 52.Kf5 Kd6 1/2-1/2
2021.10.13 2nd Year Long GM 2021
1516775 GM Zubarev, Al1 (2395) IM Koustav, Chatterjee (2431) 1/2-1/2
1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O Nxe4 5.Re1 Nd6 6.Nxe5 Be7 7.Bf1 Nf5 8.Nf3 O-O 9.d4 d5 10.c3 Bd6 11.g3 1/2-1/2
2021.10.12 2nd Year Long GM 2021
1516771 IM Koustav, Chatterjee (2431) IM Aronyak, Ghosh (2445) 1/2-1/2
1.e4 c5 2.Nf3 d6 3.d4 Nf6 1/2-1/2
2021.10.11 2nd Year Long GM 2021
1516764 IM Neelash, Saha (2421) IM Koustav, Chatterjee (2431) 1/2-1/2
1.d4 d5 2.c4 dxc4 3.e4 Nf6 4.e5 Nd5 5.Bxc4 Nb6 6.Bb3 Nc6 7.Nf3 Bg4 8.Ng5 Bxd1 9.Bxf7+ Kd7 10.Be6+ Ke8 11.Bf7+ Kd7 12.Be6+ Ke8 13.Bf7+ 1/2-1/2
2021.10.08 1st Year Long IM 2021
1522169 IM Koustav, Chatterjee (2431) FM Ahmed, SN (2228) 1-0
1.d4 Nf6 2.Bf4 e6 3.e3 c5 4.Nf3 Be7 5.dxc5 Bxc5 6.c4 O-O 7.Nc3 d5 8.Qc2 Qa5 9.a3 Ne4 10.Nd2 Nxd2 11.Qxd2 dxc4 12.Bxc4 Rd8 13.Qe2 Bd6 14.Bxd6 Rxd6 15.O-O Nd7 16.Ne4 Rb6 17.Rfd1 Qe5 18.Nc3 a6 19.Rd4 Qc7 20.Rad1 Rb8 21.Ne4 Nf8 22.Rd8 e5 23.Ng5 Be6 24.Nxe6 fxe6 25.R8d2 Rc6 26.Bd3 Rc8 27.h4 Qe7 28.g3 Rc1 29.Kg2 Rxd1 30.Qxd1 Rc7 31.Qh5 Qf6 32.Be4 g6 33.Qd1 Qe7 34.h5 Kg7 35.hxg6 hxg6 36.Rc2 Rd7 37.Qe1 Nh7 38.Qa5 Kf6 39.f4 exf4 40.exf4 Qd6 41.Re2 Nf8 42.Bf3 Qd4 43.Rc2 Qd6 44.Qc3+ Kf7 45.Qc8 Qe7 46.Qb8 Nh7 47.Re2 Nf8 48.Rc2 Nh7 49.g4 Nf8 50.g5 e5 51.Re2 Ne6 52.Qxe5 Rd4 53.Bd5 1-0
2021.10.07 1st Year Long IM 2021
1522167 IM Lodhi, M (2315) IM Koustav, Chatterjee (2431) 0-1
1.d4 Nf6 2.Nf3 g6 3.g3 Bg7 4.Bg2 O-O 5.O-O d6 6.c4 Nc6 7.Nc3 e5 8.d5 Nb8 9.Ne1 a5 10.Nd3 Na6 11.e4 Nd7 12.Be3 f5 13.f3 b6 14.a3 Nac5 15.b4 axb4 16.Nxb4 Nf6 17.Nc6 Qe8 18.Nb5 Rf7 19.Qc2 Bb7 20.Bh3 Bxc6 21.dxc6 fxe4 22.Bxc5 dxc5 23.fxe4 Qxc6 24.Nc3 Raf8 25.Nd5 Ne8 26.Rxf7 Rxf7 27.a4 Bh6 28.a5 bxa5 29.Rxa5 Kg7 30.Qb2 Qd6 31.Ra8 Nf6 32.Qb8 Bg5 33.Kg2 Kh6 34.Qb1 Nxd5 35.cxd5 Qf6 36.Bg4 c4 37.Ra4 c3 38.Rc4 Bd2 39.Kh3 Qf2 40.Qd3 Qg1 41.Bf3 Kg7 42.Rc6 Qf2 43.Bg4 h5 44.Be2 Qg1 45.Qa6 Rf2 46.Rxg6+ Kh7 47.Bxh5 Rxh2+ 48.Kg4 Qd1+ 0-1
2021.10.06 1st Year Long IM 2021
1522160 IM Koustav, Chatterjee (2431) IM Abdyjapar, Asyl (2391) 1-0
1.e4 c6 2.Nf3 d5 3.d3 g6 4.Nbd2 Bg7 5.d4 e6 6.Bd3 Ne7 7.O-O O-O 8.c3 b6 9.Re1 Ba6 10.Bb1 h6 11.e5 c5 12.Nf1 Bxf1 13.Kxf1 Nbc6 14.h4 Rc8 15.Bf4 cxd4 16.cxd4 Nf5 17.g3 Qe7 18.a3 Na5 19.Kg2 Nc4 20.Ra2 Rc6 21.Qd3 Rfc8 22.h5 g5 23.g4 Nxb2 24.Rxb2 Rc3 25.Rc2 Qxa3 26.Bc1 Qb3 27.gxf5 R8c4 28.Rxc3 Rxc3 29.fxe6 Rxd3 30.e7 Bf8 31.e8=Q Rxf3 32.e6 Rf6 33.Re3 Qxb1 34.e7 Qb4 35.Qxf8+ Kh7 36.e8=Q 1-0
2021.10.05 1st Year Long IM 2021
1522156 Sourath, Biswas (2270) IM Koustav, Chatterjee (2431) 0-1
1.d4 Nf6 2.Bf4 g6 3.Nc3 d5 4.e3 Bg7 5.h4 c6 6.Be2 h5 7.Nf3 a5 8.Ne5 Nbd7 9.Bf3 Nxe5 10.Bxe5 Kf8 11.Ne2 Qb6 12.Rb1 Ng4 13.Bxg7+ Kxg7 14.Nc1 e5 15.dxe5 Nxe5 16.Be2 Bf5 17.Nd3 Ng4 18.b4 axb4 19.Rxb4 Qc7 20.Qa1+ f6 21.Qb2 b5 22.Nf4 Qe5 23.Bd3 Bxd3 24.cxd3 Qxb2 25.Rxb2 Ne5 26.Ke2 Ra3 27.Rd1 Kf7 28.Rdd2 g5 29.Nh3 Rg8 30.hxg5 fxg5 31.Rb3 Ra4 32.Kf1 d4 33.Rc2 Ke7 34.a3 Kd6 35.Kg1 h4 36.f4 gxf4 37.exf4 Nd7 38.Ng5 Rf8 39.Ne4+ Kd5 40.Rf2 Rfa8 41.Rbb2 Rxa3 42.Rbd2 Rf8 43.f5 Ne5 44.Rf4 Rxd3 45.Rc2 Nc4 46.f6 Re3 47.Ng5 d3 48.Rf5+ Kd6 49.Rc1 d2 50.Rd1 Re1+ 51.Rf1 Rxf1+ 52.Rxf1 Ne3 0-1
2021.10.04 1st Year Long IM 2021
1527382 IM Koustav, Chatterjee (2431) FM Rahman, Tai (2223) 1-0
1.d4 d5 2.c4 e6 3.Nf3 Nf6 4.Nc3 c5 5.cxd5 cxd4 6.Qxd4 exd5 7.Bg5 Be7 8.e3 Nc6 9.Qa4 O-O 10.Bb5 h6 11.Bh4 Ne4 12.Bxe7 Nxe7 13.Rc1 Bg4 14.Nd4 a6 15.Be2 Bxe2 16.Ncxe2 Qb6 17.O-O Rfd8 18.Rc2 Rac8 19.Rfc1 Qf6 20.Nf4 Rxc2 21.Rxc2 g5 22.Nd3 Nf5 23.Nxf5 Qxf5 24.Qd4 Qf6 25.Qxf6 Nxf6 26.f3 Kg7 27.Kf2 Rd6 28.Rc7 Rd7 29.Rc8 Re7 30.Rc5 b6 31.Rc8 a5 32.b3 Nd7 33.g4 Kf6 34.Rh8 Kg7 35.Rd8 Nf6 36.Rc8 h5 37.h3 hxg4 38.hxg4 Nd7 39.Ke2 Kf6 40.a4 Ne5 41.Rd8 Rd7 42.Re8 Nc6 43.Rh8 Rc7 44.Rh6+ Ke7 45.f4 d4 46.fxg5 dxe3 47.Kxe3 Nb4 48.Ne5 Rc3+ 49.Ke4 Rxb3 50.Rf6 Na6 51.Rxf7+ Ke8 52.g6 Nc5+ 53.Kf5 Re3 54.Ra7 Kf8 55.g7+ Kg8 56.Kg6 1-0
2021.10.03 1st Year Long IM 2021
1527376 CM Manon, Reja Neer (2139) IM Koustav, Chatterjee (2431) 0-1
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 d6 9.h3 Nb8 10.d4 Nbd7 11.Nbd2 Bb7 12.Bc2 Re8 13.Nf1 Bf8 14.Ng3 g6 15.a4 c5 16.d5 c4 17.Be3 Qc7 18.Nd2 Nc5 19.Qe2 Nfd7 20.Reb1 Reb8 21.Qd1 Bc8 22.Ne2 Nb6 23.axb5 axb5 24.Rxa8 Rxa8 25.Ra1 Rb8 26.Qb1 Bd7 27.Kh2 Nba4 28.b3 cxb3 29.Bxb3 Nxb3 30.Qxb3 Rc8 31.Qb4 Nc5 32.Qa5 Na4 33.Qb4 Nc5 34.Qa5 f5 35.f3 Nd3 36.Qxc7 Rxc7 37.Ra7 Rxa7 38.Bxa7 h5 39.Nb3 Kf7 40.Nec1 Nb2 41.Kg1 Ke7 42.Kf1 Na4 43.Na2 g5 44.Ke2 g4 45.hxg4 fxg4 46.fxg4 Bxg4+ 47.Kd2 Kf6 48.Na5 Nb2 49.Kc2 Nc4 50.Nxc4 bxc4 51.Kd2 h4 52.Be3 Bh5 53.Bg1 Kg5 54.Bh2 Bg6 55.Ke3 Kg4 56.Nb4 Bh6+ 57.Kf2 Bxe4 58.Bxe5 dxe5 59.d6 Kf5 60.d7 Bg5 61.Na6 Bc6 62.Nc5 e4 0-1
2021.10.02 1st Year Long IM 2021
1527373 IM Koustav, Chatterjee (2431) FM Chatterjee, D (2226) 1-0
1.d4 Nf6 2.Bf4 g6 3.Nc3 d5 4.e3 Bg7 5.h4 O-O 6.h5 c5 7.hxg6 fxg6 8.dxc5 Qa5 9.Qd2 Qxc5 10.Nf3 Nc6 11.Bd3 Ng4 12.Bg3 Nb4 13.O-O e5 14.a3 Nxd3 15.cxd3 d4 16.exd4 exd4 17.Ne4 Qh5 18.Rfe1 Bd7 19.Qb4 Qd5 20.Rac1 Bc6 21.Rc5 Qd7 22.Ne5 Nxe5 23.Bxe5 Rae8 24.Ng3 Bxe5 25.Rcxe5 Rxe5 26.Rxe5 Rf7 27.Qe1 Qg4 28.Qe2 Qf4 29.Nf1 Qc1 30.Qd2 Qb1 31.Re1 Qa2 32.Ng3 Qb3 33.Ne4 Qd5 34.f3 Kg7 35.Ng5 Rd7 36.Qf4 Qf5 37.Ne6+ Kf7 38.Qb8 Qxe6 39.Rxe6 Kxe6 40.Qxa7 Kd5 41.b4 Ke5 42.Kf2 h5 43.a4 Bd5 44.b5 g5 45.Qb8+ Kf5 46.Qe8 Rf7 47.Qd8 Be6 48.Qxd4 Rc7 49.Qe4+ Kf6 50.d4 1-0
2021.10.01 1st Year Long IM 2021
1527364 IM Koustav, Chatterjee (2431) FM Hasan, Me (2154) 1/2-1/2
1.Nf3 d5 2.g3 c6 3.Bg2 Nf6 4.c4 g6 5.b3 Bg7 6.Bb2 O-O 7.O-O Bg4 8.d3 Qc8 9.Re1 Bh3 10.Bh1 h6 11.Nbd2 Nbd7 12.Rc1 Qd8 13.cxd5 cxd5 14.e4 Qb6 15.e5 Nh7 16.Qc2 Rfe8 17.d4 Nhf8 18.Nh4 e6 19.a3 Qa5 20.Nhf3 Nb6 21.a4 Bf5 22.Bc3 Bxc2 23.Bxa5 Rac8 24.Re3 Nfd7 25.Ne1 Bf5 26.Rec3 Rxc3 27.Rxc3 Rc8 28.Bf3 g5 29.Be2 g4 30.Rxc8+ Nxc8 31.Bb5 Nb8 32.f4 gxf3 33.Ndxf3 Ne7 34.Kf2 Nbc6 35.Bc3 Be4 36.Nd3 b6 37.g4 Nb8 38.Nf4 Bc2 39.Nd2 Nbc6 40.Nh5 Na5 41.Bxa5 bxa5 42.Ke2 Kf8 43.Bd3 Bxd3+ 44.Kxd3 Nc6 45.Nf3 Bh8 46.h4 Nb4+ 47.Ke3 Nc2+ 48.Kd2 Nb4 49.Nf4 Ke7 50.Kc3 Na2+ 51.Kd2 Nb4 52.g5 Bg7 53.Nh5 Bf8 54.Ke2 hxg5 55.Nxg5 Bh6 56.Nf3 Nc2 57.Nf6 Bg7 58.Ng4 f6 59.exf6+ Bxf6 60.Kd3 Nb4+ 61.Kc3 Nc6 62.h5 Kf7 63.Kd3 Bh8 64.Ke3 Ke7 65.Nge5 Bxe5 66.dxe5 Kf8 67.Ng5 Nxe5 68.Nxe6+ Ke7 69.Nd4 Kf6 70.Nb5 Nc6 71.Kf4 a6 72.Nc7 Nd4 73.Nxd5+ Kg7 74.Kg5 Nxb3 75.h6+ Kh8 76.Kg6 Nc5 77.Nc7 Nd7 78.Ne6 Ne5+ 79.Kf6 Ng4+ 80.Kg5 Ne5 81.Kh5 Kg8 82.Ng5 Kh8 83.Kh4 Kg8 84.Kg3 Kh8 85.Kf4 Ng6+ 86.Kf5 Ne7+ 87.Ke6 Ng8 88.h7 Nh6 89.Kd6 Nf5+ 90.Kc6 Ne3 91.Kb6 Nd5+ 92.Kxa6 Nc3 93.Kxa5 Nxa4 94.Kxa4 Kg7 1/2-1/2
2021.10.01 1st Year Long IM 2021
1527365 GM Kislinsky, A (2335) IM Koustav, Chatterjee (2431) 0-1
1.e4 e6 2.d4 d5 3.Nd2 Be7 4.Ngf3 Nf6 5.e5 Nfd7 6.c3 c5 7.Bd3 b6 8.O-O Ba6 9.Ne1 Bxd3 10.Nxd3 Nc6 11.Qg4 Kf8 12.Nf3 h5 13.Qg3 Rc8 14.h4 g6 15.Bg5 cxd4 16.cxd4 Bxg5 17.hxg5 Ne7 18.Qf4 Kg7 19.g3 Nf5 20.Rac1 Nb8 21.Nh4 Nc6 22.Nxf5+ gxf5 23.Qh4 Ne7 24.Rxc8 Qxc8 25.Rc1 Qd8 26.Nf4 Ng6 27.Nxh5+ Kf8 28.Qh3 b5 29.g4 b4 30.Qe3 fxg4 31.Nf6 Rh3 32.Qe2 Kg7 33.Qxg4 Rh4 34.Qf3 Nf4 35.Kf1 Qa5 36.Ng4 Qb5+ 37.Kg1 Qe2 38.Nh2 Qxf3 39.Nxf3 Ne2+ 40.Kg2 Rg4+ 41.Kh3 Rf4 0-1
2021.09.29 1st Year Long IM 2021
1527354 CM Zia, Tahsin Tajwar (2212) IM Koustav, Chatterjee (2431) 1-0
1.d4 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 d5 5.cxd5 Nxd5 6.e4 Nb6 7.Ne2 c5 8.d5 O-O 9.O-O e6 10.Nec3 Na6 11.a4 exd5 12.exd5 Bf5 13.g4 Bxb1 14.Rxb1 Nc4 15.Ne4 Nd6 16.Bg5 f6 17.Bf4 Nxe4 18.Bxe4 Qd7 19.Bg2 Rfe8 20.d6 Nb4 21.Qf3 Rab8 22.Rbe1 b6 23.h3 Rbd8 24.Rxe8+ Rxe8 25.Rd1 Bf8 26.Bf1 a6 27.Bc4+ Kg7 28.g5 Qf5 29.Qb7+ Be7 30.Re1 1-0
2021.09.27 Joytu Sheikh Hasina GM Op
1534048 IM Koustav, Chatterjee (2431) GM Hossain, Enam (2402) 1/2-1/2
1.d4 d5 2.c4 c6 3.Nc3 Nf6 4.e3 e6 5.Nf3 Nbd7 6.Be2 Bd6 7.O-O O-O 8.b3 b6 9.Bb2 Bb7 10.Bd3 c5 11.cxd5 exd5 12.Rc1 Re8 13.Ne2 a6 14.Ng3 g6 15.Qe2 Ne4 16.Rfd1 Qe7 17.Ba1 f5 18.dxc5 bxc5 19.Qb2 Qf6 20.Bxe4 fxe4 21.Qxf6 Nxf6 22.Ng5 d4 23.Nh3 Rac8 24.exd4 cxd4 25.Rxc8 Rxc8 26.Bxd4 Ng4 27.Ng5 Bxg3 28.hxg3 h6 29.Ne6 Rc2 30.Nc5 Ba8 31.a4 a5 32.Kf1 e3 33.Bxe3 Bxg2+ 34.Kg1 Bh3 35.Bd4 Ne5 36.Bxe5 Rxc5 37.Re1 Kf7 38.Bd4 Rd5 39.Be3 g5 40.Rc1 Rd3 41.Rc7+ Kf6 1/2-1/2
2021.09.26 Joytu Sheikh Hasina GM Op
1534032 IM Mitrabha, G (2467) IM Koustav, Chatterjee (2431) 1-0
1.d4 Nf6 2.c4 e6 3.Nf3 d5 4.Bg5 Nbd7 5.e3 h6 6.Bh4 Be7 7.Nc3 O-O 8.cxd5 Nxd5 9.Bxe7 Nxe7 10.Bd3 c5 11.O-O b6 12.Be4 Rb8 13.Qe2 cxd4 14.Nxd4 Nc5 15.Rfd1 Nxe4 16.Nxe4 Qd5 17.Nc3 Qa5 18.Qb5 Qxb5 19.Ndxb5 a6 20.Nd6 b5 21.Nce4 Rd8 22.Nc5 Nd5 23.Nxf7 Kxf7 24.e4 b4 25.exd5 Rxd5 26.Rxd5 exd5 27.Rd1 Rb5 28.Nb3 Ke7 29.f3 Kd6 30.Kf2 Rb7 31.Rc1 Bd7 32.Ke3 Bb5 33.Nd4 Bd7 34.h4 Rb8 35.Kd2 Rf8 36.g3 Re8 37.Ra1 Rb8 38.b3 Kc5 39.Ne2 Rf8 40.Rc1+ Kd6 41.Nd4 Re8 42.h5 Re5 43.Rh1 Re8 44.Ne2 a5 45.Nf4 Rc8 46.Ne2 Rf8 47.Nd4 Ke5 48.Kd3 Rc8 49.Re1+ Kd6 50.Kd2 Rf8 51.f4 Ra8 52.Nc2 Bf5 53.Nd4 Bd7 54.Re5 a4 55.Nc2 Kc5 1-0
2021.09.25 Joytu Sheikh Hasina GM Op
1534006 GM Zubarev, Al1 (2409) IM Koustav, Chatterjee (2431) 0-1
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.d3 d6 9.Bd2 h6 10.h3 Re8 11.a4 Bd7 12.Nc3 Na5 13.Ba2 c5 14.Nd5 Nc6 15.Bb3 b4 16.c3 Rb8 17.Bc4 bxc3 18.Bxc3 Nxd5 19.Bxd5 Qc8 20.Nd2 Nb4 21.Bc4 Bg5 22.Nf1 Be6 23.b3 Kh7 24.Re2 f5 25.Bxb4 Rxb4 26.exf5 Bxf5 27.Ne3 Be6 28.Nd5 Rb8 29.Rc2 Rf8 30.Qe2 Qb7 31.Qe4+ Bf5 32.Qe2 Rbe8 33.Nc3 Kh8 34.Bd5 Qb4 35.a5 Qd4 36.Be4 Bd7 37.Kh2 Qb4 38.Nd5 Qb8 39.Rb1 Be6 40.Nb6 Qd8 41.Bd5 Rf4 42.g3 Bxd5 43.Nxd5 Rd4 44.Nb6 Rb4 45.Rc4 Rb5 46.b4 Rf8 47.Kg2 Qe7 48.Nd5 Qb7 49.Qe4 cxb4 50.h4 Bd2 51.Rc2 Qxd5 52.Rxd2 Qc5 53.d4 exd4 54.Rxd4 b3 55.Rb2 Qc3 56.Rdd2 Qxa5 57.Rxd6 Qc3 58.Qe2 Qc7 59.Qd3 Qb7+ 60.Kh2 Rbf5 61.Qd4 Kh7 62.Rb6 Qf7 63.Kg2 a5 64.R6xb3 Qe8 65.Re3 Qf7 66.Reb3 Qe8 67.Re3 Qg6 68.Qe4 Kh8 69.Qd4 Qf7 70.Re5 Rxe5 71.Qxe5 Qf3+ 72.Kh2 a4 73.Qc5 Rd8 74.Qc4 a3 75.Re2 Qa8 76.Qf7 Rf8 77.Qe6 Qa7 78.f4 Rb8 79.h5 Qc5 80.Qg6 Qb5 81.Rd2 Ra8 82.Qf7 Qe8 83.Qxe8+ Rxe8 84.Ra2 Ra8 85.Kg2 Kg8 86.Kf3 Kf7 87.Kg4 Ke6 88.Re2+ Kf6 89.Ra2 Ra5 90.Kf3 Ke6 91.g4 Kd5 92.g5 Ke6 93.Kg4 Ra4 94.Re2+ Kf7 95.Ra2 hxg5 0-1
2021.09.24 Joytu Sheikh Hasina GM Op
1533976 IM Koustav, Chatterjee (2431) IM Srijit, Paul (2312) 1/2-1/2
1.e4 c5 2.Nf3 e6 3.g3 Nc6 4.Bg2 Nf6 5.Nc3 d5 6.exd5 Nxd5 7.Nxd5 Qxd5 8.O-O Be7 9.d4 Nxd4 10.Nxd4 Qxd4 11.Qe2 Qb4 12.c3 Qb6 13.a4 Bd7 14.a5 Qc7 15.Bf4 Qc8 16.a6 Bc6 17.Qb5 Bxb5 18.axb7 Qxb7 19.Bxb7 Rd8 20.Rfc1 Rd7 21.Bf3 g5 22.Be3 Rc7 23.Ra5 a6 24.c4 Bc6 25.Kg2 g4 26.Bxc6+ Rxc6 27.Rca1 Kd7 28.Rxa6 Rxa6 29.Rxa6 Rb8 30.Ra2 Rb7 31.h3 h5 32.hxg4 hxg4 33.Kf1 f5 34.Ke2 e5 35.Kd3 Bd6 36.Ra5 Rxb2 37.Bxc5 Bxc5 38.Rxc5 Kd6 39.Rd5+ Ke6 40.Ke3 Rc2 41.Rc5 Rc3+ 42.Ke2 f4 43.gxf4 exf4 44.Rg5 f3+ 45.Kd2 Rxc4 46.Ke3 Ra4 47.Rb5 1/2-1/2
2021.09.23 Joytu Sheikh Hasina GM Op
1533940 IM Das, Say (2431) IM Koustav, Chatterjee (2431) 1-0
1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O Nxe4 5.Re1 Nd6 6.Nxe5 Be7 7.Bf1 Nf5 8.Nf3 O-O 9.d4 d5 10.Nc3 Bf6 11.Ne2 Nce7 12.Nf4 Ng6 13.Nh5 Be7 14.c3 c6 15.Bd3 Bd6 16.h3 Nfh4 17.Ne5 Re8 18.Nxg7 Kxg7 19.Qh5 Bxe5 20.dxe5 Qc7 21.Bg5 Kg8 22.Bf6 1-0
2021.09.22 Joytu Sheikh Hasina GM Op
1533911 IM Koustav, Chatterjee (2431) IM Sammed Jaykumar, Shete (2412) 1-0
1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.d3 h6 5.c3 d6 6.Nbd2 g5 7.Nf1 g4 8.N3d2 h5 9.b4 Ne7 10.Qb3 Rh7 11.d4 exd4 12.cxd4 d5 13.exd5 Nexd5 14.Ne3 Be6 15.Nxd5 Bxd5 16.O-O Be7 17.Re1 Qd7 18.Qa3 Kf8 19.Bd3 Rh8 20.Nc4 h4 21.Ne5 Qd6 22.Bf4 Qxb4 23.Qc1 Rh5 24.Rb1 Qa3 25.Re3 Qxc1+ 26.Rxc1 Bd6 27.h3 gxh3 28.Rxh3 Be6 29.Rh1 Nd5 30.Bd2 h3 31.g4 Bxe5 32.gxh5 Bxd4 33.Bf1 Ke7 34.Bxh3 f5 35.h6 c6 36.Bg2 Kf7 37.Bf3 Rh8 38.a4 Kg6 39.Re1 Kf6 40.Rh4 c5 41.h7 Bf7 42.Rh6+ Kg7 43.Bxd5 Bxd5 44.Re7+ Kf8 45.Rc7 Bc6 46.Rd6 Ke8 47.Bg5 1-0
2021.09.21 Joytu Sheikh Hasina GM Op
1533885 IM Mohammad Fahad, Rahman (2339) IM Koustav, Chatterjee (2431) 0-1
1.d4 d5 2.c4 e6 3.Nf3 c6 4.e3 Nf6 5.Nc3 Nbd7 6.Be2 Bd6 7.O-O O-O 8.b3 b6 9.Bb2 Bb7 10.Bd3 Qe7 11.Re1 Rfe8 12.e4 dxe4 13.Nxe4 Nxe4 14.Bxe4 Nf6 15.Bc2 Ba3 16.Bc3 Rad8 17.Qd2 a5 18.Rad1 Bb4 19.a4 c5 20.d5 Qf8 21.Bxb4 axb4 22.Qf4 exd5 23.Qc7 Rb8 24.Ng5 Rec8 25.Qf4 h6 26.Nf3 dxc4 27.Nh4 Re8 28.Nf5 Rxe1+ 29.Rxe1 Re8 30.Rc1 Be4 31.Nd6 Nh5 32.Qh4 Qxd6 33.Bxe4 Qf4 34.Qxf4 Nxf4 35.Re1 Nd3 36.Re3 Rxe4 0-1
2021.09.20 Joytu Sheikh Hasina GM Op
1533854 IM Koustav, Chatterjee (2431) FM Piyumantha, M Sasith Nipun (2231) 1/2-1/2
1.Nf3 Nf6 2.g3 d5 3.Bg2 g6 4.O-O Bg7 5.d4 O-O 6.c4 c6 7.b3 Ne4 8.Bb2 Nd7 9.e3 b5 10.Nfd2 Ndf6 11.Nxe4 Nxe4 12.cxd5 cxd5 13.Nd2 Bb7 14.Nxe4 dxe4 15.Qd2 Qd7 16.Qa5 Rfc8 17.Rfc1 a6 18.Bf1 Qd5 19.Qb6 e6 20.a4 Bf6 21.Rxc8+ Rxc8 22.Rc1 Rxc1 23.Bxc1 Qc6 24.Qa7 b4 25.Bd2 Be7 26.Qb8+ Qc8 27.Qa7 Qc6 28.Bc4 Bd6 29.Bc1 Bc7 30.Bd2 a5 1/2-1/2
2021.09.19 Joytu Sheikh Hasina GM Op
1538872 CM Nayem, Haque (2080) IM Koustav, Chatterjee (2431) 0-1
1.d4 Nf6 2.c4 e6 3.g3 c5 4.Nf3 cxd4 5.Nxd4 d5 6.Bg2 e5 7.Nf3 d4 8.O-O Nc6 9.b4 e4 10.Ng5 Bxb4 11.Nd2 O-O 12.Ndxe4 Nxe4 13.Nxe4 Bf5 14.a3 Be7 15.Qa4 Qd7 16.Re1 Rfe8 17.Bf4 Bf8 18.Ng5 h6 19.Nf3 Rad8 20.Rad1 Be4 21.Qb5 Qc8 22.Bc1 b6 23.e3 Bc5 24.Nh4 a6 25.Qb2 d3 26.Qc3 Bxg2 27.Kxg2 Ne5 28.f4 Qc6+ 29.Kg1 Ng4 30.Rxd3 Qe4 31.Rxd8 Rxd8 32.Ng2 Rd3 33.Qa1 Qf3 34.Qa2 Rd1 35.h3 Rxe1+ 36.Nxe1 Qxg3+ 37.Ng2 Qh2+ 0-1
2021.09.14 Titled Tuesday 14th Sept
1540114 GM Matlakov, M (2683) IM Koustav, Chatterjee (2431) 1-0
1.Nf3 d5 2.g3 Nf6 3.Bg2 e6 4.O-O c5 5.c4 d4 6.e3 Nc6 7.exd4 cxd4 8.d3 Bd6 9.Na3 O-O 10.Nc2 e5 11.b4 Nxb4 12.Nxb4 Bxb4 13.Nxe5 Re8 14.Rb1 Bc5 15.Re1 Qc7 16.Nf3 Bg4 17.Bf4 Qa5 18.h3 Bxf3 19.Bxf3 Qxa2 20.Rxb7 Rxe1+ 21.Qxe1 Re8 22.Qd1 h6 23.Rb5 Qa3 24.Bc1 Qc3 25.Bd2 Qa3 26.Kg2 a6 27.Bc1 Qc3 28.Bb2 axb5 29.Bxc3 dxc3 30.cxb5 Bd4 31.Qb3 Rc8 32.Bc6 Nd7 33.Qc4 Nb6 34.Qxd4 c2 35.Qc3 1-0
2021.09.14 Titled Tuesday 14th Sept
1541144 WGM Dauletova, G (2257) IM Koustav, Chatterjee (2431) 0-1
1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.d3 d6 5.O-O a6 6.Ba4 g6 7.c3 Bg7 8.h3 O-O 9.Bg5 h6 10.Be3 b5 11.Bb3 Bb7 12.Re1 d5 13.Bc2 Qd7 14.a4 Rfe8 15.Na3 b4 16.cxb4 Nxb4 17.Bb1 dxe4 18.dxe4 Qxd1 19.Rxd1 Bxe4 20.Bxe4 Nxe4 21.Rac1 c5 22.Ne1 Rad8 23.Rxd8 Rxd8 24.f3 Ng3 25.Kf2 Nf5 26.Bxc5 Rd2+ 27.Kg1 Rxb2 28.Nc4 Na2 29.Rd1 Rb8 30.Na5 Nc3 31.Rd2 Nd4 32.Bxd4 exd4 33.Nd3 Nxa4 34.Nc6 Re8 35.Kf2 Nc3 36.Ndb4 Nb5 37.Nxa6 Bf6 38.Nab4 Kg7 39.Nd5 Rc8 40.Nxf6 Rxc6 41.Ne4 f5 42.Ng3 Kf6 43.Ne2 Ke5 44.f4+ Kd5 45.Kf3 Ra6 46.Rd3 Ra3 47.Rxa3 Nxa3 48.g4 d3 49.Nc3+ Kd4 50.Nd1 Nc4 51.gxf5 gxf5 52.h4 h5 0-1
2021.09.14 Titled Tuesday 14th Sept
1541459 IM Gelman, A (2403) IM Koustav, Chatterjee (2431) 1-0
1.d4 Nf6 2.Nc3 d5 3.Bf4 c5 4.e3 cxd4 5.exd4 a6 6.Nf3 Bg4 7.h3 Bxf3 8.Qxf3 Nc6 9.O-O-O e6 10.Kb1 Bd6 11.Be3 b5 12.g4 b4 13.Ne2 a5 14.Nf4 Qc7 15.Bd3 a4 16.g5 Nd7 17.g6 Nf6 18.gxf7+ Qxf7 19.Bb5 Rc8 20.Bxa4 O-O 21.Rhg1 Na5 22.Nd3 Nc4 23.Bh6 Nh5 24.Qe2 Kh8 25.Bc1 Nf6 26.f3 Nh5 27.Rg4 g6 28.Re1 Nb6 29.Bb5 Bg3 30.Rf1 Bd6 31.Bh6 Rg8 32.Ne5 Qc7 33.Bd3 Bxe5 34.dxe5 Nd7 35.f4 Nc5 36.Bg5 Rgf8 37.Rh4 Nxd3 38.cxd3 Rf5 39.Rg1 Ng3 40.Qd2 Rxg5 41.fxg5 Nf5 42.Rxb4 Qxe5 43.a3 Ne3 44.Rc1 Rf8 45.Rb7 Qxg5 46.Rcc7 Qg1+ 47.Ka2 Rf1 48.Rc8+ 1-0
2021.09.14 Titled Tuesday 14th Sept
1541005 IM Koustav, Chatterjee (2431) FM Manukyan, SaA (2150) 0-1
1.Nf3 d5 2.d4 e6 3.c4 Nf6 4.Nc3 Be7 5.Bf4 c5 6.e3 cxd4 7.Nxd4 Nc6 8.cxd5 Nxd5 9.Nxc6 bxc6 10.Be5 O-O 11.Be2 f6 12.Nxd5 Qxd5 13.Qxd5 cxd5 14.Bc3 e5 15.Kd2 Be6 16.b3 Rfd8 17.Rhd1 a5 18.Bf3 Bf5 19.g4 Bg6 20.Ke2 a4 21.Bxd5+ Rxd5 22.Rxd5 Bf7 23.Rd7 Bf8 24.bxa4 Be6 25.Rc7 Rxa4 26.h3 Bxa2 27.Ke1 h5 28.Bd2 hxg4 29.hxg4 Kh7 30.Rc2 Bb3 31.Rxa4 Bxa4 32.Rc8 Be7 33.f3 Kg6 34.Kf2 Kf7 35.Rc7 Ke6 36.Ra7 Bb5 37.Kg3 g6 38.Bc3 Bd6 39.Rb7 Bc6 40.Rb6 Kd7 41.Ra6 f5 42.gxf5 gxf5 43.Ra5 Ke6 44.f4 exf4+ 45.exf4 Be4 46.Be5 Bb4 47.Ra6+ Kd5 48.Ra1 Ke6 49.Rd1 Bc5 50.Kh4 Be7+ 51.Kg3 Bc5 52.Rc1 Bb4 53.Ra1 Bc5 54.Ra6+ Kd5 55.Ra8 Ke6 56.Rh8 Bb4 57.Rh6+ Kd5 58.Kh4 Be7+ 59.Kh5 Bc5 60.Kg6 Kc4 61.Rh8 Kd3 62.Rd8+ Ke2 63.Rd7 Kf3 64.Rc7 Bf2 65.Rc3+ Kg4 66.Kf6 Bh4+ 67.Ke6 Bb1 68.Rc8 Ba2+ 69.Kd6 Bg3 70.Rc1 Bb3 71.Rg1 Bc4 72.Ke7 Kf3 73.Kf6 Bd3 74.Kg5 Bf2 75.Ra1 Bc5 76.Ra5 Be7+ 77.Kg6 Be4 78.Rb5 Bh4 79.Rb3+ Kg4 80.Rb4 Bg3 81.Rb1 Bxb1 82.Kf6 Be4 83.Ke6 Bxf4 84.Bd4 Bd2 85.Be5 Bc2 86.Bd6 f4 87.Bxf4 Bxf4 88.Kf6 Bf5 89.Kf7 Bg5 90.Kf8 Kf4 91.Ke8 Ke5 92.Kf8 Kd6 93.Ke8 Ke6 94.Kf8 Kd7 95.Kg8 Ke7 96.Kh8 Bf6+ 97.Kg8 Be6+ 98.Kh7 Kf7 99.Kh6 Bg4 100.Kh7 Bg5 101.Kh8 Bf3 102.Kh7 Be4+ 103.Kh8 Bf6# 0-1
2021.09.14 Titled Tuesday 14th Sept
1540802 IM Zarubitski, Viachaslau (2416) IM Koustav, Chatterjee (2431) 1-0
1.a3 d5 2.d4 Nf6 3.Nf3 Bf5 4.c4 e6 5.Qb3 Qc8 6.Bf4 Nbd7 7.e3 c6 8.Nc3 Be7 9.Rc1 O-O 10.h3 a6 11.Be2 dxc4 12.Qxc4 b5 13.Qa2 Qb7 14.O-O Rfc8 15.Nh4 Bg6 16.Nxg6 hxg6 17.Bf3 Nd5 18.Bg3 N7f6 19.Ne2 c5 20.dxc5 Rxc5 21.Rxc5 Bxc5 22.Rd1 Rc8 23.Nc3 Bf8 24.Nxd5 exd5 25.Bxd5 Nxd5 26.Qxd5 Qxd5 27.Rxd5 Kh7 28.Rd7 f6 29.Ra7 Rc6 30.b4 g5 31.Kf1 Kg6 32.Ke2 Bd6 33.Bxd6 Rxd6 34.g4 Rc6 35.f4 gxf4 36.exf4 f5 37.Kd3 Rd6+ 38.Ke3 Kf6 39.Kf2 Rc6 40.Kg3 Rc3+ 41.Kh4 Rxa3 42.Rb7 Ra4 43.Rb6+ Kf7 44.Kg5 Rxb4 45.Rb7+ Kf8 46.gxf5 a5 47.h4 a4 48.Ra7 Rb1 49.f6 gxf6+ 50.Kxf6 Ke8 51.h5 Rh1 52.Kg6 Rh3 53.h6 a3 54.h7 b4 55.f5 Rg3+ 56.Kf6 Rh3 57.Ke6 Rxh7 58.Ra8# 1-0
2021.09.14 Titled Tuesday 14th Sept
1540553 IM Koustav, Chatterjee (2431) Desideri, Ricardo Maruchi (1939) 1-0
1.Nf3 c5 2.c4 Nf6 3.Nc3 e6 4.e3 b6 5.d4 d5 6.cxd5 exd5 7.Ne5 Nbd7 8.Bb5 Bd6 9.f4 O-O 10.O-O a6 11.Bc6 cxd4 12.exd4 Rb8 13.Nxd5 Nxd5 14.Bxd5 Nxe5 15.fxe5 Be7 16.Qb3 Kh8 17.Be3 f6 18.Bf4 Bb7 19.Bxb7 Rxb7 20.Rad1 fxe5 21.Bxe5 Rxf1+ 22.Rxf1 Bf6 23.Qe6 Re7 24.Bxf6 gxf6 25.Qxf6+ Kg8 26.h3 Qe8 27.Kh2 Rg7 28.Qf3 Qb8+ 29.Kh1 h6 30.d5 Qd6 31.Qe4 Qg3 32.Rd1 h5 33.d6 Rf7 34.d7 1-0
2021.09.14 Titled Tuesday 14th Sept
1541339 IM Koustav, Chatterjee (2431) FM Stevens, C CAN (2260) 1/2-1/2
1.Nf3 d5 2.d4 Nf6 3.c4 e6 4.Nc3 dxc4 5.e4 Bb4 6.Bxc4 Nxe4 7.O-O Nf6 8.Qa4+ Nc6 9.Ne5 Be7 10.Nxc6 bxc6 11.Qxc6+ Bd7 12.Qf3 Rb8 13.b3 O-O 14.Bf4 Rb6 15.Rac1 Bc6 16.Qe2 Qxd4 17.Be3 Qh4 18.Bxb6 cxb6 19.h3 Bc5 20.Bb5 Ba8 21.Kh2 Qg5 22.f4 Qh6 23.Na4 Be3 24.Rc4 Bd5 25.g3 Bxc4 26.Bxc4 Qh5 27.Qxh5 Nxh5 28.Rd1 Nf6 29.Kg2 Rb8 30.Kf3 Bc5 31.Nxc5 bxc5 32.Rd6 Kf8 33.g4 Ke7 34.Ra6 Rb7 35.Rc6 Nd7 36.Ke3 Kd8 37.Ra6 Rc7 38.Bd3 h6 39.h4 Ke7 40.g5 hxg5 41.hxg5 Nb6 42.f5 Nd5+ 43.Kd2 exf5 44.Bxf5 Nb4 45.Ra5 Kd6 46.Ke3 Ke5 47.Be4 f5 48.gxf6 gxf6 49.a3 Nd5+ 50.Kf3 Nc3 51.Bc2 f5 52.b4 Ne4 53.Bxe4 fxe4+ 54.Ke3 Kd5 55.bxc5 Rxc5 56.Rxa7 Rc3+ 57.Kd2 Rh3 58.a4 Ke5 59.a5 Ra3 60.a6 Kd6 61.Ra8 Kc7 62.a7 Kb7 63.Re8 Kxa7 64.Rxe4 Ra6 65.Rd4 Rc6 66.Kd3 Kb6 67.Rb4+ Kc7 68.Rc4 Rxc4 69.Kxc4 1/2-1/2
2021.09.14 Titled Tuesday 14th Sept
1540330 IM Koustav, Chatterjee (2431) IM Winslow, E (2165) 1-0
1.Nf3 d5 2.d4 Nf6 3.c4 e6 4.Nc3 Bb4 5.cxd5 exd5 6.Bg5 h6 7.Bh4 g5 8.Bg3 Ne4 9.Nd2 Bf5 10.Rc1 Nc6 11.Ndxe4 Bxe4 12.a3 Ba5 13.b4 Bb6 14.Nxe4 dxe4 15.e3 a5 16.Bb5 axb4 17.d5 Ra5 18.a4 Rxb5 19.axb5 Ne7 20.d6 cxd6 21.Bxd6 b3 22.Bxe7 Kxe7 23.Ke2 b2 24.Qxd8+ Rxd8 25.Rb1 f5 26.Rxb2 Ke6 27.Rd1 Ra8 28.Rbd2 Bc5 29.g3 Ra5 30.Rb1 b6 31.h3 Ra7 32.Rc2 Ke5 33.Rbb2 h5 34.Ra2 Rf7 35.Rd2 Rh7 36.Ra8 h4 37.Re8+ Kf6 38.gxh4 Rxh4 39.Rd5 Rxh3 40.Ree5 Rf3 41.Re8 f4 42.Rxc5 bxc5 43.b6 fxe3 44.fxe3 Rh3 45.b7 Rh2+ 46.Kf1 1-0
2021.03.29 TCh-BAN Premier 2021
1722257 IM Koustav, Chatterjee (2431) FM Rahman, Tai (2215) 1-0
1.d4 d5 2.c4 e6 3.Nf3 c5 4.cxd5 exd5 5.g3 Nc6 6.Bg2 cxd4 7.Nxd4 Bc5 8.Nxc6 bxc6 9.Qc2 Qb6 10.O-O Ne7 11.Nc3 Bd4 12.Na4 Qb5 13.Rd1 Bb6 14.Bg5 f6 15.Bf4 O-O 16.Nxb6 axb6 17.Bd6 Ra7 18.Rac1 Bf5 19.e4 Bg4 20.Rd2 Be6 21.Bf1 Qa5 22.b4 Qa3 23.Rd3 Qa6 24.exd5 Bf5 25.dxc6 Qc8 26.c7 Re8 27.Bxe7 Bxd3 28.Bxd3 Rxe7 29.Bf5 Raxc7 30.Bxc8 1-0
2021.03.28 TCh-BAN Premier 2021
1722252 IM Koustav, Chatterjee (2431) Masum, H (2054) 1-0
1.e4 c5 2.Nf3 e6 3.g3 Nc6 4.Bg2 d6 5.O-O Nge7 6.Re1 g6 7.d4 Bg7 8.d5 Ne5 9.Nxe5 dxe5 10.c4 O-O 11.Nc3 a6 12.Be3 b6 13.a3 Qd6 14.b4 cxb4 15.Na4 exd5 16.exd5 Rb8 17.Bxb6 bxa3 18.c5 Qd7 19.c6 Qe8 20.Rxa3 f5 21.c7 Rxb6 22.Nxb6 Bd7 23.d6 Nc8 24.Nxd7 Qxd7 25.Qd5+ Kh8 26.Rxa6 e4 27.Qc6 1-0
2021.03.26 TCh-BAN Premier 2021
1722212 CM Md. Shawket Bin, Osman Shaon (1982) IM Koustav, Chatterjee (2431) 0-1
1.d4 c5 2.e3 Nf6 3.Nf3 g6 4.Bd3 Bg7 5.O-O O-O 6.c4 cxd4 7.exd4 d5 8.Nc3 Nc6 9.h3 b6 10.Re1 Bb7 11.Bg5 dxc4 12.Bxc4 Rc8 13.Bf1 h6 14.Be3 e6 15.Qd2 Ne7 16.Ne5 Nf5 17.Rad1 Nd5 18.Nxd5 Qxd5 19.Rc1 Rfd8 20.Rxc8 Rxc8 21.Rc1 Rd8 22.Nf3 Qd7 23.Be2 e5 24.Rd1 exd4 25.Bf4 Qd5 26.Bd3 Qd7 27.Rc1 Bxf3 28.gxf3 Nh4 0-1
2021.03.25 TCh-BAN Premier 2021
1722176 IM Koustav, Chatterjee (2431) Kaustuv, K (2301) 1-0
1.e4 d5 2.exd5 Qxd5 3.Nf3 Nf6 4.Be2 g6 5.c4 Qd8 6.d4 Bg7 7.O-O O-O 8.Nc3 b6 9.Ne5 Bb7 10.Bf3 Qc8 11.Re1 Rd8 12.Bg5 c6 13.Qd2 Nbd7 14.Qf4 Re8 15.Bg4 e6 16.Ne4 Nxe5 17.Bxf6 Nd3 18.Qg3 Nxe1 19.Bxg7 f5 20.Rxe1 fxe4 21.Be5 Qd7 22.h4 c5 23.d5 Qf7 24.d6 Rad8 25.h5 h6 26.hxg6 Qxg6 27.Re3 Kh7 28.Qh4 Qg5 29.Qxg5 hxg5 30.Bh5 Rf8 31.Rh3 1-0
2021.03.24 TCh-BAN Premier 2021
1722169 IM Koustav, Chatterjee (2431) FM Hasan, Me (2204) 1-0
1.c4 e5 2.g3 Nf6 3.Bg2 d5 4.cxd5 Nxd5 5.Nf3 Nc6 6.O-O Nb6 7.b3 Be7 8.Bb2 f6 9.Nc3 Be6 10.Rc1 Qd7 11.Ne4 O-O-O 12.Qc2 Kb8 13.Rfd1 Qc8 14.d4 Nb4 15.Qb1 f5 16.Nc5 e4 17.Ne5 Bd5 18.Ba3 Nc6 19.Nxc6+ bxc6 20.e3 Nd7 21.Qb2 Ka8 22.Nxd7 Qxd7 23.Bc5 Rb8 24.Qa3 Bxc5 25.Rxc5 g5 26.Rdc1 h5 27.Ra5 Rb7 28.Bf1 Rhb8 29.Rcc5 Qe7 30.Qa4 Rf8 31.Ba6 Rfb8 32.Bxb7+ Rxb7 33.Rxd5 cxd5 34.Rxd5 Qe6 35.Re5 Qf6 36.Qd7 f4 37.Re6 1-0
2021.03.23 TCh-BAN Premier 2021
1722140 IM Koustav, Chatterjee (2431) Sanket, Chakravarty (2106) 1-0
1.e4 c5 2.Nf3 Nc6 3.Bb5 g6 4.O-O Bg7 5.Re1 e5 6.c3 Nge7 7.d4 exd4 8.cxd4 cxd4 9.Bf4 O-O 10.Bd6 a6 11.Bf1 b6 12.Nbd2 Bb7 13.Nb3 Re8 14.Qd2 Nc8 15.Bf4 d5 16.e5 N8e7 17.Bd3 Qd7 18.a3 Rac8 19.h3 Nd8 20.Bh6 Ne6 21.Bxg7 Kxg7 22.Nfxd4 Nc6 23.Nxe6+ fxe6 24.h4 Na5 25.Nd4 Qe7 26.Qf4 Rf8 27.Qg4 Rce8 28.Re2 b5 29.Rc1 Nc4 30.Nf3 Qf7 31.b3 Qf4 32.Qxf4 Rxf4 33.bxc4 dxc4 34.Bb1 Bxf3 35.gxf3 Rxf3 36.a4 Rd8 37.axb5 axb5 38.h5 gxh5 39.Rb2 c3 40.Rxb5 Rd2 41.Rb7+ Kf8 42.Be4 Rfxf2 43.Rxc3 Rf7 44.Rb8+ Kg7 45.Rg3+ Kh6 46.Re8 h4 47.Rxe6+ Kh5 48.Bf3+ 1-0
2021.03.21 TCh-BAN Premier 2021
1730046 GM Rahman, Zia (2419) IM Koustav, Chatterjee (2431) 1/2-1/2
1.Nf3 d5 2.g3 g6 3.Bg2 Bg7 4.d4 c6 5.O-O Nf6 6.b3 O-O 7.Bb2 a5 8.a4 Bf5 9.e3 Na6 10.Na3 Rc8 11.Qe2 Qb6 12.Rfc1 Rfd8 13.h3 c5 14.Nb5 Be4 15.Nd2 Bxg2 16.Kxg2 Qe6 17.Ba3 cxd4 18.Nxd4 Qd7 19.Qb5 e5 20.N4f3 Qc7 21.Bb2 Ne8 22.Rab1 Nd6 23.Qe2 Re8 24.Ba3 e4 25.Ng1 Nf5 26.c3 Nc5 27.Bxc5 Qxc5 28.b4 Qa7 29.Qb5 axb4 30.Qxb4 Rc7 31.Nf1 Ra8 32.Qb5 Ne7 33.c4 d4 34.Ne2 Nf5 35.exd4 Nxd4 36.Nxd4 Bxd4 37.Re1 Qxa4 38.Rxe4 Qxb5 39.Rxb5 Bc5 40.Rb2 f5 41.Ree2 Bd4 42.Rbc2 Rac8 43.Ne3 Bxe3 44.Rxe3 b5 45.c5 Rxc5 46.Rxc5 Rxc5 47.Re7 Rc3 48.Rb7 Rb3 49.g4 h6 50.gxf5 gxf5 51.h4 Rb1 52.h5 Rb4 53.Rb6 Kg7 54.Rg6+ Kh7 55.Rf6 Rg4+ 56.Kf3 Rg5 57.Rb6 f4 58.Rb7+ Kg8 59.Kxf4 Rxh5 60.Ke4 Rc5 61.f4 h5 62.Kd4 Rf5 63.Ke4 Rc5 64.Kd4 Rf5 65.Ke4 Rc5 1/2-1/2
2021.03.20 TCh-BAN Premier 2021
1730021 FM Islam, Kh (2174) IM Koustav, Chatterjee (2431) 0-1
1.d4 Nf6 2.Nf3 b6 3.Bf4 Bb7 4.e3 Nh5 5.Bg5 h6 6.Bh4 g5 7.Nfd2 Nf6 8.Bg3 Bg7 9.a4 a5 10.Na3 d6 11.h4 g4 12.h5 Nbd7 13.Nac4 O-O 14.Rh2 c5 15.c3 Ba6 16.Be2 Rc8 17.Qb3 Rb8 18.Qd1 Qc8 19.Na3 Bxe2 20.Qxe2 cxd4 21.exd4 e5 22.Kf1 exd4 23.cxd4 Re8 24.Qd3 Qc6 25.Nb5 Re6 26.Nc4 Qe4 27.Qd1 Qd5 28.b3 Rc8 29.Rh4 Nxh5 30.Qxg4 Ndf6 31.Qh3 Nxg3+ 32.Qxg3 Ne4 33.Qf4 Rce8 34.f3 Rf6 35.Qh2 Qg5 36.Kg1 Rxf3 37.Rh5 Qg6 38.Rd5 Rg3 39.Rf1 Nf6 40.Rdf5 Re2 41.R5f2 Rxf2 42.Rxf2 Rxb3 43.Rf1 Ne4 44.Ncxd6 Ng3 45.Re1 Qxd6 46.Qh4 Qg6 47.d5 Rb1 0-1
2021.03.19 TCh-BAN Premier 2021
1730009 IM Koustav, Chatterjee (2431) GM Narayanan, SL (2618) 0-1
1.d4 d5 2.c4 e6 3.Nf3 Nf6 4.Nc3 Bb4 5.cxd5 exd5 6.Bg5 h6 7.Bh4 O-O 8.e3 Bf5 9.Be2 Nbd7 10.Qb3 Bxc3+ 11.Qxc3 g5 12.Bg3 Ne4 13.Qxc7 Qxc7 14.Bxc7 Rac8 15.Rc1 Nb6 16.O-O Na4 17.Ba5 Nxb2 18.Rfe1 f6 19.Nd2 Nxd2 20.Bxd2 Nd3 21.Bxd3 Bxd3 22.f3 f5 23.a4 b6 24.a5 Kf7 25.Kf2 Ke6 26.Bb4 Rfe8 27.Red1 Bc4 28.Rd2 Kd7 29.Ra1 Re6 30.axb6 axb6 31.Rb2 Kc6 32.Bd2 Kb7 33.h4 g4 34.Kg3 gxf3 35.gxf3 f4+ 36.Kf2 Rg8 37.Rbb1 b5 38.Re1 Reg6 39.Rg1 fxe3+ 40.Bxe3 b4 41.Bxh6 b3 42.Rxg6 Rxg6 43.Bc1 Re6 44.h5 Re2+ 45.Kg3 Kc6 46.h6 b2 47.Bxb2 Rxb2 48.h7 Rb8 49.Rh1 Rh8 50.Kf4 Kd6 51.Rh6+ Ke7 52.Ke5 Kf7 53.f4 Kg7 54.Rc6 Re8+ 55.Kf5 Kxh7 56.Rc7+ Kg8 57.Kg6 Re6+ 58.Kf5 Re1 59.Kg6 Bd3+ 60.f5 Kf8 61.Rd7 Be4 62.Kf6 Ke8 63.Re7+ Kf8 64.Rd7 Bf3 65.Rd8+ Re8 66.Rd7 Ra8 67.Rf7+ Ke8 68.Re7+ Kd8 69.Rh7 Ra6+ 70.Ke5 Ke8 71.Rh8+ Kf7 72.Rh7+ Kf8 73.Rd7 Be4 74.Rb7 Rc6 75.Ra7 Rb6 76.Rc7 Kg8 77.Rd7 Rb8 78.f6 Kf8 79.Ke6 Rb6+ 80.Ke5 Bf3 81.Rd8+ Kf7 82.Rd7+ Ke8 83.Ra7 Rb8 84.Rh7 Rb6 85.Ra7 Bh5 86.Kxd5 Rxf6 87.Ke5 Rb6 88.d5 Bg4 89.Rg7 Bd7 90.Rh7 Kd8 91.Rh2 Rg6 92.Kd4 Rg5 93.Kc5 Be6 94.Rd2 Kd7 95.Rd1 Bg8 96.Rd2 Rg1 97.Rd4 Rg2 98.Ra4 Rg5 99.Rd4 Kc7 100.Rd2 Rg1 101.Rd4 Rc1+ 102.Rc4 Rg1 103.Rb4 Bf7 104.Rc4 Kd7 105.Rb4 Rc1+ 106.Rc4 Rf1 107.Rd4 Bg6 108.Rg4 Rc1+ 109.Rc4 Ra1 110.Rg4 Bf7 111.Rh4 Ra7 112.Rf4 Rc7+ 113.Kd4 Ke7 114.Rf5 Rc1 115.Rf3 Bg6 116.Rf4 Ra1 117.Ke5 Re1+ 118.Kd4 Bc2 119.Kc3 Bb1 120.Kd4 Re2 121.Rh4 Kf6 122.Rf4+ Bf5 123.Kc5 Ke5 124.Rd4 Rc2+ 125.Rc4 Rd2 126.Kc6 Be4 127.Rc1 Bxd5+ 128.Kc5 Be4 129.Kb4 Rd8 130.Rc5+ Bd5 131.Kc3 Rh8 132.Rc7 Rh3+ 133.Kd2 Kd4 134.Re7 Ra3 135.Rc7 Be6 136.Rc6 Bc4 137.Rd6+ Bd5 138.Rd8 Ra2+ 139.Kd1 Ke4 140.Kc1 Bc4 141.Rd2 Ra8 142.Kc2 Rc8 143.Rd6 Ke3 144.Kb2 Rc5 145.Rd8 Bd5 146.Rh8 Kd4 147.Rh4+ Be4 148.Kb3 Rb5+ 149.Ka3 Rb1 150.Ka4 Rb8 151.Ka3 Rb7 152.Ka4 Rb1 153.Ka5 Kd5 154.Ka4 Bd3 155.Rb4 Rc1 156.Rh4 Kc5 157.Rh5+ Kd4 158.Rh4+ Kc3 159.Ka5 Rb1 160.Rh5 Bc4 161.Rh3+ Kd4 162.Ka4 Rb2 163.Ka3 Rb8 164.Ka4 Bb5+ 165.Ka3 Bd3 166.Ka4 Kc3 167.Ka5 Rb5+ 168.Ka4 Rg5 169.Rf3 Rg6 0-1
2020.12.06 Super Juniors CB IND Elim
1814127 IM Arjun, Kalyan (2477) IM Koustav, Chatterjee (2431) 1-0
1.e4 c6 2.Nc3 d5 3.Nf3 Bg4 4.h3 Bxf3 5.Qxf3 e6 6.Be2 Bc5 7.Qg3 Bd4 8.d3 Ne7 9.h4 Nd7 10.h5 h6 11.Nd1 dxe4 12.dxe4 Bf6 13.O-O e5 14.Ne3 Bg5 15.Nc4 f6 16.Nd6+ Kf8 17.Qb3 Nd5 18.Nxb7 1-0
2020.12.06 Super Juniors CB IND Elim
1814128 IM Koustav, Chatterjee (2431) IM Arjun, Kalyan (2477) 1/2-1/2
1.c4 Nf6 2.g3 e6 3.Nf3 d5 4.b3 c5 5.Bg2 Nc6 6.O-O d4 7.e3 e5 8.exd4 exd4 9.Re1+ Be7 10.d3 O-O 11.Ne5 Nxe5 12.Rxe5 Bd6 13.Re1 h6 14.Na3 Bg4 15.Qd2 Qd7 16.Bb2 Rae8 17.Nb5 Bb8 18.b4 a6 19.Na3 b6 20.Nc2 Qf5 21.a4 a5 22.bxc5 bxc5 23.Ba3 Bd6 24.Nxd4 Qc8 25.Nb5 Be5 26.Rab1 Bh3 27.f3 Bxg2 28.Kxg2 Bb8 29.Qf2 Rxe1 30.Rxe1 Rd8 31.Rd1 Nd7 32.d4 Ne5 33.Bxc5 Nxc4 34.Rc1 Qe6 35.Rc3 Nb6 36.Bxb6 Qxb6 37.Qc2 Qe6 38.Qd2 Qd5 39.Qe2 Qf5 40.Re3 Qd7 41.Re7 Qd5 42.Re8+ Kh7 43.Rxd8 Qxd8 44.Qe4+ g6 45.d5 Qc8 46.d6 Qc1 47.Qe7 Qd2+ 48.Kh3 Qd5 49.d7 Qxf3 50.d8=Q Qf1+ 51.Kh4 g5+ 52.Qxg5 hxg5+ 53.Qxg5 Qc4+ 54.Kh3 Qxa4 55.Qh5+ Kg7 56.Nc3 Qd7+ 57.Kg2 Qc6+ 58.Nd5 Ba7 59.Qg5+ Kf8 60.Qd8+ Kg7 61.Qg5+ Kf8 62.Qd8+ Kg7 63.Qg5+ 1/2-1/2
2020.12.06 Super Juniors CB IND Elim
1814129 IM Arjun, Kalyan (2477) IM Koustav, Chatterjee (2431) 1-0
1.e4 Nf6 2.e5 Nd5 3.c4 Nb6 4.d4 d6 5.f4 g6 6.Nc3 Bg7 7.Be3 O-O 8.Be2 dxe5 9.fxe5 c5 10.d5 Bxe5 11.Nf3 Bg7 12.Bxc5 Bg4 13.Bd4 Bxf3 14.Bxf3 e5 15.Bc5 Re8 16.Be2 Nxc4 17.O-O Nd6 18.Bxd6 Qxd6 19.Ne4 Qb6+ 20.Kh1 f5 21.Ng5 Nd7 22.d6 h6 23.Bc4+ Kh8 24.Bf7 hxg5 25.Bxg6 Nf6 26.Bxe8 Rxe8 27.Rxf5 e4 28.Rxg5 Rd8 29.Qe1 Qxd6 30.Qh4+ Kg8 31.Rf1 e3 32.Re1 Qe7 33.Qc4+ Qf7 34.Qb5 Re8 35.h4 Ne4 36.Rd5 Nf2+ 37.Kg1 Ng4 38.Rf5 Qe7 39.Qd5+ 1-0
2020.12.01 RBI Open Qualifier 1 2020
1819705 GM Aravindh, Chithambaram VR. (2641) IM Koustav, Chatterjee (2431) 1-0
1.c4 e6 2.Nc3 d5 3.d4 c6 4.e4 dxe4 5.Nxe4 Bb4+ 6.Bd2 Qxd4 7.Bxb4 Qxe4+ 8.Be2 Na6 9.Ba5 b6 10.Qd6 Bb7 11.O-O-O Nf6 12.Bc3 e5 13.Bxe5 Nb4 14.Qxb4 Qxe5 15.Bf3 Qf4+ 16.Kb1 Rd8 17.Nh3 Qf5+ 18.Ka1 Rxd1+ 19.Rxd1 Qc5 20.Re1+ Kf8 21.Qd2 g6 22.Qh6+ Kg8 23.g4 Qf8 24.g5 Qxh6 25.gxh6 Kf8 26.Ng5 Nd7 27.Bg4 Nc5 28.b4 Na6 29.a3 Nb8 30.Kb2 f5 31.Bf3 Ba6 32.Kc3 c5 33.b5 Bc8 34.Bd5 Bd7 35.Nf7 Rg8 36.Ng5 Rh8 37.f4 Bc8 38.Nf7 1-0
2020.12.01 RBI Open Qualifier 1 2020
1819746 IM Barria Zuniga, D (2341) IM Koustav, Chatterjee (2431) 1-0
1.Nc3 d5 2.d4 Nf6 3.Bg5 Bf5 4.f3 Nbd7 5.Qd2 h6 6.Bh4 e6 7.O-O-O Be7 8.e3 c5 9.Nge2 a6 10.g4 Bg6 11.Bg3 b5 12.Nf4 Bh7 13.h4 b4 14.Nce2 c4 15.g5 c3 16.Qe1 Ng8 17.Kb1 Qa5 18.g6 fxg6 19.Nxe6 Rc8 20.Nc1 g5 21.Bd3 cxb2 22.Nb3 Qb6 23.Bxh7 Qxe6 24.Bd3 Ngf6 25.hxg5 Ng8 26.gxh6 Nxh6 27.e4 Kd8 28.Qe2 a5 29.Nxa5 Ra8 30.Nb7+ Kc8 31.Nc5 Nxc5 32.dxc5 dxe4 33.Bc4 Qc6 34.Bd5 Qa4 35.Bxa8 Qxa8 36.Qxe4 Qxe4 37.fxe4 Bxc5 38.Bf4 Re8 39.Bxh6 gxh6 40.Rxh6 Rxe4 41.Rc6+ 1-0
2020.12.01 RBI Open Qualifier 1 2020
1819809 IM Koustav, Chatterjee (2431) Kong, Xiangrui (1815) 1-0
1.Nf3 d5 2.g3 c5 3.Bg2 Nf6 4.O-O Nc6 5.d4 Bg4 6.Ne5 cxd4 7.Nxg4 Nxg4 8.e3 Nf6 9.exd4 e6 10.c3 Bd6 11.Re1 O-O 12.a4 a6 13.Bg5 h6 14.Bxf6 Qxf6 15.a5 Rfc8 16.Nd2 Bc7 17.Nb3 Bd6 18.Ra4 Qd8 19.Qd3 Na7 20.Rc1 Qd7 21.Rca1 Nb5 22.Nd2 Bb8 23.Nf1 Ba7 24.Ne3 Rc7 25.Ng4 Rac8 26.Ne5 Qe7 27.Bf1 Nd6 28.Qf3 Ne4 29.Bd3 Nd6 30.Qe2 Qf6 31.Ng4 Qg5 32.Ne5 Qf6 33.h4 Qe7 34.h5 Re8 35.Bc2 f5 36.Ng6 Qf6 37.Kg2 Ne4 38.f3 Ng5 39.Nf4 Rce7 40.Re1 Bb8 41.Ng6 Rf7 42.Raa1 f4 43.g4 Nh7 44.Qd3 Ng5 45.Ne5 Bxe5 46.Rxe5 Rfe7 47.Rae1 Nf7 48.Qh7+ Kf8 49.Bg6 Qh4 50.Rf1 Qg3+ 51.Kh1 Qh3+ 52.Kg1 Rc7 53.Bxf7 Rxf7 54.Qh8+ Ke7 55.Rxe6+ Kxe6 56.Qxe8+ Kd6 57.Qd8+ Kc6 58.Qc8+ Kb5 59.Qc5+ Ka4 60.Qb4# 1-0
2020.12.01 RBI Open Qualifier 1 2020
1819582 Dong, Yunhao IM Koustav, Chatterjee (2431) 0-1
1.e4 Nf6 2.d3 e5 3.Nf3 Nc6 4.Bg5 Bc5 5.Nc3 h6 6.Bh4 g5 7.Bg3 d6 8.h3 a6 9.Be2 Ba7 10.Qd2 Be6 11.a3 Qe7 12.O-O-O O-O-O 13.Kb1 Kb8 14.Rhf1 Rdg8 15.Rde1 Qd8 16.Bd1 Nd7 17.Ne2 f5 18.exf5 Bxf5 19.d4 e4 20.Nh2 Qf6 21.d5 Nce5 22.Nd4 Nc4 23.Qc3 Qxd4 24.Qxd4 Bxd4 25.c3 Nd2+ 0-1
2020.12.01 RBI Open Qualifier 1 2020
1819852 FM Zhang Xuan (2343) IM Koustav, Chatterjee (2431) 0-1
1.e4 Nf6 2.e5 Nd5 3.c4 Nb6 4.d4 d6 5.exd6 cxd6 6.Nf3 g6 7.Bd3 Bg7 8.O-O O-O 9.Nc3 Nc6 10.Bg5 Bg4 11.Re1 Re8 12.d5 Ne5 13.Be2 Bxf3 14.Bxf3 Nbxc4 15.Be2 Nxb2 16.Qb3 Nbd3 17.f4 Nc5 18.Qc2 Ned7 19.Rab1 Rc8 20.Qd2 Qa5 21.Ne4 Qa3 22.Nxc5 Qxc5+ 23.Kh1 Bc3 24.Qd3 Bxe1 25.Rxe1 Nf6 26.h3 Qxd5 27.Qe3 Qc5 28.Qb3 Ne4 29.Bb5 Qf2 30.Rxe4 Rc1+ 31.Kh2 Qg1+ 32.Kg3 Rec8 33.Re3 R8c2 34.Be2 Qe1+ 35.Kh2 Rxe2 36.Rxe2 Qxe2 37.Qxb7 f6 38.Bh6 Rc2 39.f5 Qe5+ 40.Kh1 Qxf5 41.Qxe7 Qf1+ 42.Kh2 Qxg2# 0-1
2020.12.01 RBI Open Qualifier 1 2020
1819604 IM Koustav, Chatterjee (2431) GM Petrosyan, M (2628) 1-0
1.d4 Nf6 2.Nf3 d5 3.g3 c6 4.Bg2 Bf5 5.c4 e6 6.Qb3 Qb6 7.c5 Qxb3 8.axb3 Nbd7 9.Nc3 a6 10.b4 Rc8 11.h3 h6 12.g4 Bh7 13.Bf4 Be7 14.O-O Ne4 15.Rfc1 Bd8 16.Ne1 g5 17.Be3 f5 18.f3 Nxc3 19.bxc3 f4 20.Bd2 e5 21.e3 Bc7 22.c4 dxc4 23.Rxc4 O-O 24.dxe5 Nxe5 25.Rd4 fxe3 26.Bxe3 Rce8 27.Bf2 Ng6 28.Rd7 Rf7 29.Rad1 Nf4 30.Bf1 Kf8 31.Bc4 Rxd7 32.Rxd7 Re7 33.Rd2 Nxh3+ 34.Kg2 Nf4+ 35.Kf1 Be5 36.Ng2 Nxg2 37.Kxg2 Bg6 38.Rd8+ Re8 39.Rd7 Re7 40.Rd8+ Kg7 41.Bg3 Bxg3 42.Kxg3 Bf7 43.Bxf7 Kxf7 44.Rd6 Kg7 45.Rd8 Rf7 46.Rd6 Rf6 47.Rd7+ Rf7 48.Rd6 Re7 49.Rd8 Kf6 50.Rd6+ Re6 51.Rd7 Re7 52.Rd6+ Ke5 53.Rxh6 Rg7 54.Rd6 Rf7 55.Kf2 Rh7 56.Ke3 Re7 57.Rg6 Kd5+ 58.Kd3 Rf7 59.Rxg5+ Ke6 60.Ke4 Rh7 61.Re5+ Kd7 62.f4 Rh1 63.Kf5 Rb1 64.Re4 a5 65.bxa5 Rb5 66.Re5 Rxa5 67.g5 Ra8 68.g6 b5 69.cxb6 Kd6 70.Kg5 c5 71.Re1 c4 72.f5 Kc5 73.Rc1 Kb4 74.f6 c3 75.g7 Kb3 76.Rxc3+ Kxc3 77.f7 1-0
2020.12.01 RBI Open Qualifier 1 2020
1819877 GM Lenderman, A (2624) IM Koustav, Chatterjee (2431) 1-0
1.b3 d5 2.Bb2 Bf5 3.d3 e6 4.Nd2 Nf6 5.g3 h6 6.Bg2 Bh7 7.e4 c6 8.Nh3 Be7 9.O-O O-O 10.Kh1 a5 11.a3 Nbd7 12.e5 Ne8 13.f4 a4 14.b4 c5 15.bxc5 Bxc5 16.g4 f5 17.exf6 Nexf6 18.g5 hxg5 19.fxg5 Ne8 20.Qh5 Bf5 21.Nf3 Qe7 22.Nh4 Bxh3 23.Bxh3 Rxf1+ 24.Rxf1 Nf8 25.Rxf8+ Kxf8 26.Qh8+ Kf7 27.g6# 1-0
2020.12.01 RBI Open Qualifier 1 2020
1819637 IM Koustav, Chatterjee (2431) GM Kuybokarov, Temur (2530) 0-1
1.d4 Nf6 2.Nf3 d5 3.g3 Bf5 4.Bg2 e6 5.c4 h6 6.O-O c6 7.Qb3 Qb6 8.c5 Qxb3 9.axb3 Nbd7 10.b4 a6 11.Nc3 Rc8 12.h3 g5 13.Nd2 Bg7 14.Nb3 Kd8 15.g4 Bc2 16.Na5 Kc7 17.f4 Ne4 18.fxg5 Bxd4+ 19.e3 Bxc3 20.bxc3 hxg5 21.c4 Rhf8 22.Bb2 f5 23.gxf5 Rxf5 24.cxd5 cxd5 25.Rfc1 Bd3 26.c6 bxc6 27.Rxc6+ Kb8 28.Rac1 Rff8 29.Bd4 Rxc6 30.Nxc6+ Kb7 31.Na5+ Kb8 32.Nc6+ Ka8 33.Ne5 Nxe5 34.Bxe5 Kb7 35.Rc7+ Kb6 36.Re7 Rc8 37.Rxe6+ Kb5 38.Rg6 Rc1+ 39.Kh2 Rc2 40.Kg1 Kxb4 41.Rxa6 Bxa6 0-1
2020.06.23 Titled Tuesday 23rd June
1942786 IM Koustav, Chatterjee (2431) IM Florescu, C (2293) 1-0
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.f3 c5 5.d5 b5 6.e4 exd5 7.cxd5 a6 8.Be2 d6 9.Bd3 O-O 10.Ne2 Nbd7 11.O-O Ne5 12.Bc2 c4 13.h3 Bc5+ 14.Kh1 h6 15.Bf4 g5 16.Bh2 Ng6 17.f4 Nh5 18.e5 dxe5 19.fxe5 Bb7 20.Ne4 Be3 21.N2c3 b4 22.Qxh5 bxc3 23.Qxh6 g4 24.Qxe3 Kg7 25.Nd6 Qh4 26.Nf5+ 1-0
2020.06.23 Titled Tuesday 23rd June
1942554 FM Kislov, O (2249) IM Koustav, Chatterjee (2431) 0-1
1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Nxd4 Nf6 5.Nc3 Bb4 6.Nxc6 bxc6 7.Bd3 O-O 8.O-O d5 9.exd5 cxd5 10.Bg5 c6 11.Qf3 h6 12.Bxf6 Qxf6 13.Qxf6 gxf6 14.Ne2 Bd7 15.Nf4 Bd6 16.Nh5 Be5 17.Rab1 Rab8 18.b3 Bg4 19.Ng3 Rfe8 20.Rfe1 Bc3 21.Rxe8+ Rxe8 22.Kf1 Re5 23.f4 Re3 24.Nf5 Rxd3 25.cxd3 Bxf5 26.Rc1 Bxd3+ 27.Kf2 d4 28.Kf3 f5 29.g3 Kg7 30.Rd1 Be4+ 31.Ke2 Kf6 32.Rc1 Ke6 33.Rd1 Kd5 34.Rc1 Kc5 35.a3 a5 36.Rg1 d3+ 0-1
2020.06.23 Titled Tuesday 23rd June
1942961 FM Karacsonyi, Gellert (2292) IM Koustav, Chatterjee (2431) 1-0
1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O Nxe4 5.d4 Nd6 6.dxe5 Nxb5 7.a4 Nbd4 8.Nxd4 d5 9.exd6 Bxd6 10.Re1+ Ne7 11.Nc3 O-O 12.Bg5 f6 13.Bh4 Nf5 14.Nxf5 Bxf5 15.Qd5+ 1-0
2020.05.16 Sukooon Resort Indian Chess.com
1988956 IM Raja, Rithvik R (2408) IM Koustav, Chatterjee (2431) 0-1
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Bd2 d5 6.Nf3 b6 7.cxd5 exd5 8.Bd3 Bb7 9.O-O Bd6 10.Qb1 c5 11.dxc5 bxc5 12.e4 d4 13.e5 Bxf3 14.exf6 Qxf6 15.Ne4 Qh4 16.h3 Bxe4 17.Bxe4 Nd7 18.Bxa8 Rxa8 19.Qf5 Nf8 20.Rfe1 Rb8 21.b3 Qd8 22.Bf4 Bxf4 23.Qxf4 Ne6 24.Qe5 Rc8 25.Rac1 Qd7 26.f4 d3 27.Rcd1 c4 28.bxc4 Rxc4 29.Re4 Rc5 30.Qb8+ Rc8 31.Qb4 h6 32.f5 Ng5 33.Rd4 Qxf5 34.R4xd3 Kh7 35.R3d2 Ne4 36.Rf1 Qg6 37.Rb2 Ng3 38.Re1 Nf5 39.Qe4 Rc6 40.Rf1 Ng3 41.Qxg6+ Kxg6 42.Re1 h5 43.Rb3 h4 44.Rb4 Kh5 45.Rg4 g5 46.Ra4 a6 47.Ra3 Kg6 48.Rf3 Rc2 49.Rf2 Rc6 50.Rd1 f5 51.Rfd2 Ne4 52.Rd8 g4 53.hxg4 fxg4 54.Rg8+ Kh5 55.Rd5+ Kh6 56.Rxg4 Nf6 57.Rxh4+ Kg6 58.Rdd4 Rc5 59.Kh2 Ra5 60.Ra4 Rd5 61.Rxa6 Kg5 62.Rh3 Ng4+ 0-1
2020.05.16 Sukooon Resort Indian Chess.com
1988986 IM Koustav, Chatterjee (2431) GM Narayanan, Sri (2540) 1/2-1/2
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Bd2 c5 6.a3 Bxc3 7.Bxc3 Ne4 8.Ne2 b6 9.d5 Nxc3 10.Nxc3 d6 11.Bd3 e5 1/2-1/2
2020.05.16 Sukooon Resort Indian Chess.com
1989001 IM Aditya, Mittal (2438) IM Koustav, Chatterjee (2431) 1/2-1/2
1.Nf3 d5 2.g3 Bg4 3.Bg2 c6 4.O-O Nd7 5.d3 Ngf6 6.h3 Bxf3 7.exf3 g6 8.f4 Bg7 9.Nd2 O-O 10.Re1 e6 11.a4 Qc7 12.Nf3 Ne8 13.c3 Nd6 14.Qc2 c5 15.Bd2 Rac8 16.Kh2 Rfe8 17.Ne5 Nf5 18.Nxd7 Qxd7 19.a5 Qb5 20.Bf1 Red8 21.Qa4 Qxa4 22.Rxa4 Kf8 23.Rb1 Nd6 24.Bg2 a6 25.Bf3 c4 26.d4 Rc6 27.Be2 b5 28.axb6 Rxb6 29.Bc1 Ra8 30.Kg2 Ke7 31.Rba1 Kd7 32.Kf3 Kc7 33.Bd1 h5 34.Ra5 Nb7 35.R5a2 Nd6 36.Bc2 Kb7 37.Ra5 Bf8 38.Ke2 Rb5 39.R5a2 Rb6 40.Ra5 1/2-1/2
2020.05.16 Sukooon Resort Indian Chess.com
1989041 IM Koustav, Chatterjee (2431) GM Harsha, B (2509) 1-0
1.d4 Nf6 2.c4 d6 3.Nc3 e5 4.Nf3 exd4 5.Nxd4 g6 6.g3 Bg7 7.Bg2 O-O 8.O-O Re8 9.b3 Nbd7 10.Bb2 Ne5 11.h3 c6 12.Qd2 h5 13.Rad1 d5 14.cxd5 cxd5 15.Nc2 Bf5 16.Ne3 Bh6 17.f4 h4 18.g4 Nexg4 19.hxg4 Rxe3 20.Qxe3 Nxg4 21.Qf3 Bg7 22.e3 Rc8 23.Rxd5 Qb6 24.Rxf5 gxf5 25.Nd5 Qe6 26.Bxg7 Kxg7 27.e4 Rc2 28.Bh3 Qg6 29.exf5 1-0
2020.05.15 Sukooon Resort Indian Chess.com
1988866 IM Mendonca, Leon Luke (2452) IM Koustav, Chatterjee (2431) 1/2-1/2
1.Nf3 d5 2.g3 Bg4 3.Bg2 c6 4.O-O Nd7 5.d3 Ngf6 6.c4 e6 7.cxd5 cxd5 8.Nc3 Bd6 9.Be3 O-O 10.Qb3 Qe7 11.Nb5 Bc5 12.Bxc5 Qxc5 13.Rfc1 Qb6 14.Nc7 Rac8 15.Qxb6 axb6 16.Nb5 Rc5 17.Nd6 Bxf3 18.Bxf3 Rb8 19.d4 Rc6 20.Nb5 Rbc8 21.Rc3 Rxc3 22.Nxc3 Kf8 23.e3 Ke7 24.Be2 Ne4 25.Rc1 Nd6 26.Kf1 Nf6 27.f3 Nc4 28.Kf2 Nd6 29.Bd3 h5 30.b3 g5 31.Ne2 1/2-1/2
2020.05.15 Sukooon Resort Indian Chess.com
1988876 IM Koustav, Chatterjee (2431) WIM Vantika, Agrawal (2286) 1-0
1.Nf3 Nf6 2.g3 g6 3.b3 Bg7 4.Bb2 d6 5.d4 O-O 6.Bg2 Nbd7 7.O-O Re8 8.c4 c6 9.Nc3 e5 10.e4 exd4 11.Nxd4 Nc5 12.Re1 Qb6 13.Qc2 a5 14.Rad1 a4 15.Nxa4 Nxa4 16.bxa4 Qb4 17.Nb3 Rxa4 18.Bc3 Qa3 19.e5 Bf5 20.Qd2 dxe5 21.Rxe5 Raa8 22.Rxe8+ Rxe8 23.Bb4 Qa6 24.Rc1 Qa8 25.Bc3 Qd8 26.Qb2 Nh5 27.Bxg7 Nxg7 28.Nc5 Qb6 29.Qxb6 1-0
2020.05.15 Sukooon Resort Indian Chess.com
1988911 IM Sachdev, T (2392) IM Koustav, Chatterjee (2431) 0-1
1.d4 Nf6 2.c4 e6 3.Nf3 d5 4.Nc3 dxc4 5.Qa4+ c6 6.Qxc4 b5 7.Qd3 a6 8.Bg5 c5 9.d5 Be7 10.O-O-O Nxd5 11.Bxe7 Qxe7 12.Nxd5 exd5 13.Qxd5 Bb7 14.Qe5 Nd7 15.Qxg7 O-O-O 16.e3 Qe6 17.Kb1 Nf6 18.Be2 Rdg8 19.Qh6 Rxg2 20.Qf4 Rxf2 21.Ng5 Rxf4 22.Nxe6 Rf2 23.Rhf1 Rxe2 24.Rxf6 fxe6 25.Rxe6 Rd8 0-1
2020.05.15 Sukooon Resort Indian Chess.com
1988931 IM Koustav, Chatterjee (2431) IM Sankalp, Gupta (2429) 1-0
1.d4 e6 2.Nf3 Nf6 3.g3 b6 4.Bg2 Bb7 5.O-O Be7 6.c4 O-O 7.Re1 Bb4 8.Bd2 a5 9.Nc3 d6 10.b3 Nbd7 11.a3 Bxc3 12.Bxc3 Qc8 13.Nd2 Bxg2 14.Kxg2 e5 15.e4 exd4 16.Bxd4 Re8 17.f4 Qb7 18.Qf3 Re6 19.e5 Qxf3+ 20.Nxf3 dxe5 21.fxe5 Ne8 22.Ng5 Rg6 23.e6 fxe6 24.Nxe6 a4 25.b4 Nf8 26.Nf4 Rd6 27.Nd5 Kh8 28.Re4 c6 29.Rae1 Rdd8 30.Nxb6 Rab8 31.Nxa4 Nd6 32.Rg4 Nf5 33.Bf2 1-0
2020.05.15 Sukooon Resort Indian Chess.com
1988821 GM Shyam, SM (2518) IM Koustav, Chatterjee (2431) 1-0
1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 Nd4 5.O-O c6 6.Bd3 Nxf3+ 7.Qxf3 d6 8.h3 g6 9.Be2 Bg7 10.d3 O-O 11.Qg3 d5 12.Kh1 dxe4 13.dxe4 Qe7 14.Qh4 b5 15.a3 Bb7 16.Bg5 Qe6 17.Rad1 h5 18.Rd2 Nh7 19.Be3 Bf6 20.Qg3 Rfd8 21.Bxh5 Rxd2 22.Bxd2 Kg7 23.Bg4 Qe7 24.Rd1 a5 25.Bc1 Rd8 26.Rxd8 Qxd8 27.Qd3 Qxd3 28.cxd3 Ba6 29.Be2 Nf8 30.Be3 Ne6 31.Bb6 Nf4 32.Bxa5 c5 33.Bf1 Be7 34.g3 Ne6 35.Nd5 Bd6 36.Bc3 f6 37.Kg2 Kf7 38.Be2 Bb7 39.b4 Nd4 40.Bd1 f5 41.f3 Bxd5 42.exd5 cxb4 43.axb4 g5 44.h4 gxh4 45.gxh4 f4 46.Kh3 Nf5 47.Be1 Kg6 48.d4 Nxd4 49.Kg4 Kh6 50.Bc3 Kg6 51.Bxd4 exd4 52.Be2 Bxb4 53.Kxf4 Bd6+ 54.Ke4 b4 55.f4 b3 56.f5+ Kh6 57.Kxd4 b2 58.Bd3 Be7 59.Ke5 Bxh4 60.f6 1-0
2020.05.05 Titled Tuesday 5th May
1989893 IM Laurusas, T (2511) IM Koustav, Chatterjee (2431) 1-0
1.d4 Nf6 2.c4 e6 3.Nf3 d5 4.Nc3 dxc4 5.e4 b5 6.e5 Nd5 7.Nxb5 Nb6 8.Be2 Be7 9.O-O Nc6 10.Be3 O-O 11.Rc1 Rb8 12.Nc3 Nb4 13.Ne4 N4d5 14.Nfd2 Ba6 15.Qc2 Nxe3 16.fxe3 Nd5 17.Rf3 Nxe3 18.Rxe3 Qxd4 19.Qc3 Qxc3 20.Rexc3 Rxb2 21.Bxc4 Bb7 22.Rb3 Rxb3 23.axb3 Rd8 24.Kf2 Bb4 25.Rc2 Kf8 26.g3 Ke7 27.Ke3 f5 28.exf6+ gxf6 29.Nf3 Ba5 30.Nf2 Bb6+ 31.Ke2 e5 32.Nh4 Bc8 33.Ne4 f5 34.Nc3 c6 35.Nd1 f4 36.Nf2 Rf8 37.Ne4 Bg4+ 38.Ke1 Rd8 39.Be2 Ba5+ 40.Kf2 Bb6+ 41.Kg2 Be6 42.Bc4 Bg4 43.Nf3 fxg3 44.hxg3 Bd4 45.Nxd4 exd4 46.Bd3 Rb8 47.Bc4 Bf5 48.Re2 Kd7 49.Kf3 Bg6 50.Kf4 Rf8+ 51.Kg4 Bf5+ 52.Kg5 Bg6 53.Nf6+ Kd6 54.Re6+ Kc7 55.Ne4 Rf5+ 56.Kh6 Rf3 57.g4 Re3 58.Nc5 Rh3+ 59.Kg7 Kb6 60.Nd7+ Kc7 61.Ne5 d3 62.Rxc6+ Kb7 63.Rd6 Be4 64.Bxd3 Kc7 65.Rd7+ 1-0
2020.05.05 Titled Tuesday 5th May
1989947 IM Koustav, Chatterjee (2431) IM Drygalov, Andrey (2495) 1-0
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Nf3 c5 6.Bd3 d5 7.O-O cxd4 8.exd4 dxc4 9.Bxc4 Nbd7 10.Bg5 b6 11.Qe2 Bxc3 12.bxc3 Bb7 13.Bd3 Qc7 14.c4 Rfe8 15.Rfe1 Qd6 16.Rad1 Rac8 17.Bh4 h6 18.Bg3 Qa3 19.Ne5 Qc3 20.Qe3 Qb4 21.Bh4 Nxe5 22.dxe5 Nd7 23.Bb1 Nf8 24.Bd3 Ba6 25.Bf6 Bxc4 26.Qg3 g6 27.Re4 Qa4 28.Rde1 Qb5 29.Qh4 Kh7 30.Qxh6+ 1-0
2020.05.05 Titled Tuesday 5th May
1990031 GM Kobo, Ori (2449) IM Koustav, Chatterjee (2431) 1-0
1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.c4 Nb6 5.exd6 cxd6 6.Nc3 g6 7.Bd3 Bg7 8.Nge2 Nc6 9.Be3 O-O 10.O-O Nb4 11.b3 Nxd3 12.Qxd3 Bf5 13.Qd2 Rc8 14.Rfe1 a6 15.d5 Nd7 16.Nd4 Ne5 17.Nxf5 gxf5 18.Bd4 Qd7 19.a4 f4 20.Qxf4 Kh8 21.Re3 Rg8 22.Rae1 Bf6 23.Rg3 Rxg3 24.hxg3 Rg8 25.Ne4 Rg4 26.Nxf6 Rxf4 27.Nxd7 Rxd4 28.Nxe5 dxe5 29.Rxe5 1-0
2020.05.05 Titled Tuesday 5th May
1989782 IM Koustav, Chatterjee (2431) GM Kobalia, M (2614) 1-0
1.d4 d5 2.c4 c6 3.Nc3 dxc4 4.e3 b5 5.a4 b4 6.Ne4 Qd5 7.Nd2 Ba6 8.Qc2 c5 9.dxc5 Nf6 10.Ngf3 Nbd7 11.Bxc4 Bxc4 12.Qxc4 Qxc4 13.Nxc4 Nxc5 14.Nd4 g6 15.Bd2 Nfe4 16.Ke2 Nxd2 17.Nxd2 Bg7 18.Rhc1 Bxd4 19.exd4 Ne6 20.Ke3 Rd8 21.Rc4 a5 22.Nb3 Ra8 23.d5 Ng7 24.Rc5 Nf5+ 25.Kd3 Kd7 26.Rac1 Ra7 27.Rxa5 Rxa5 28.Nxa5 Kd6 29.Ke4 Ra8 30.Nb7+ Kd7 31.b3 Nd6+ 32.Nxd6 Kxd6 33.Rc6+ Kd7 34.Rb6 Rc8 35.Rxb4 Rc2 36.Kf3 Kd6 37.Rb7 Rd2 38.a5 Rxd5 39.b4 Rd3+ 40.Ke4 Ra3 41.Kd4 Ra2 42.f4 f6 43.g3 h5 44.Rb6+ Kc7 45.h4 Ra3 46.Re6 Kd7 47.Re3 e5+ 48.fxe5 fxe5+ 49.Ke4 Ra4 50.Rb3 Ke6 51.Rb1 Kd6 52.Rb3 Ke6 53.Rb2 Kd6 54.Kd3 Kd5 55.Kc3 e4 56.Rd2+ Ke5 57.Rd8 Ra3+ 58.Kc4 e3 59.Re8+ Kf5 60.Kb5 Kg4 61.a6 Kf3 62.Kb6 e2 63.a7 Kf2 64.Kb7 e1=Q 65.Rxe1 Kxe1 66.a8=Q 1-0
2020.05.05 Titled Tuesday 5th May
1990396 GM Bartel, Mat (2648) IM Koustav, Chatterjee (2431) 0-1
1.Nf3 Nf6 2.c4 e6 3.g3 d5 4.Bg2 dxc4 5.Qa4+ c6 6.Qxc4 b5 7.Qc2 Bb7 8.O-O c5 9.a4 b4 10.d3 Nbd7 11.Nbd2 Be7 12.Nc4 O-O 13.a5 a6 14.e4 Bc6 15.Be3 Bb5 16.Nfd2 Ng4 17.Bf4 Bf6 18.Nd6 e5 19.Be3 Nxe3 20.fxe3 Bg5 21.N2c4 Nb8 22.Rf5 Nc6 23.Raf1 f6 24.Qb3 Kh8 25.Rxg5 Bxc4 26.Nxc4 fxg5 27.Rxf8+ Qxf8 28.Qd1 Rd8 29.Bf1 Qf6 30.Be2 Rf8 31.Qf1 Qxf1+ 32.Bxf1 b3 33.Bh3 Rd8 34.Bf1 Rb8 35.Bh3 Rd8 36.Bf1 Kg8 37.Kf2 Kf7 38.Ke1 Kf6 39.Kd2 Rb8 40.Bh3 Ke7 41.Kc3 Rb4 42.Bc8 Ra4 43.Kxb3 Ra1 44.Kc3 Nxa5 45.Nxe5 Rc1+ 46.Kd2 Nb3+ 47.Ke2 Rc2+ 48.Kf3 h5 49.Nc4 Rxh2 50.e5 Nd2+ 51.Nxd2 Rxd2 52.Bxa6 Rxb2 53.Bc4 Rb4 54.Bd5 Ra4 55.Bc6 Rb4 56.Bd5 g4+ 57.Kf2 Rb2+ 58.Kg1 Rd2 59.Be4 Ke6 60.Bg6 Kxe5 61.Bxh5 Rxd3 62.Kf2 Rd2+ 63.Ke1 Rg2 64.Bxg4 Rxg3 0-1
2020.01.07 5th IIFL Wealth Mumbai Op
2024785 GM Aleksandrov, A (2592) IM Koustav, Chatterjee (2447) 1-0
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Ne2 c6 6.a3 Ba5 7.Bd2 d5 8.cxd5 exd5 9.Ng3 Bc7 10.Bd3 Re8 11.Qc2 g6 12.Nce2 Kg7 13.f3 Bb6 14.O-O h5 15.Nh1 Nbd7 16.b4 Nf8 17.Nf2 Ne6 18.Rad1 a5 19.Bc3 h4 20.e4 Nh5 21.Qc1 axb4 22.axb4 Nc7 23.e5 Nb5 24.Bxb5 cxb5 25.g4 hxg3 26.hxg3 Rh8 27.Kg2 Ra2 28.Rd2 Rxd2 29.Bxd2 Kg8 30.Bg5 Qf8 31.Rh1 Be6 32.Nd3 Ng7 33.Rxh8+ Kxh8 34.Nc5 Kg8 35.g4 Qa8 36.Kg3 Bxc5 37.Qxc5 Bd7 38.Bf6 Ne6 39.Qc1 Qf8 40.Kf2 Kh7 41.g5 Kg8 42.Qh1 Ng7 43.Qh6 1-0
2020.01.06 5th IIFL Wealth Mumbai Op
2027073 IM Koustav, Chatterjee (2447) FM Pranav, Anand (2309) 1-0
1.d4 Nf6 2.Nf3 e6 3.g3 d5 4.Bg2 b5 5.O-O Be7 6.a4 b4 7.c4 bxc3 8.Nxc3 a5 9.Bf4 O-O 10.Rc1 c6 11.Nb1 Qb6 12.Nbd2 Nfd7 13.Nb3 Na6 14.e4 Bb7 15.Ne5 Nxe5 16.Bxe5 Kh8 17.Rc3 Bb4 18.Rc1 Be7 19.h4 Rfd8 20.Rc3 f6 21.Bf4 dxe4 22.Bxe4 c5 23.Bxb7 Qxb7 24.Nxa5 Qxb2 25.Qf3 Nb4 26.Nc4 Qa2 27.Nb6 Ra7 28.dxc5 Nd5 29.Nxd5 exd5 30.c6 d4 31.Rb3 Qxa4 32.c7 Rc8 33.Rb8 Ra8 34.Qxa8 Qxa8 35.Rxa8 Rxa8 36.Ra1 1-0
2020.01.05 5th IIFL Wealth Mumbai Op
2027013 FM Pranesh, M (2317) IM Koustav, Chatterjee (2447) 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.d3 d4 10.a4 Rb8 11.axb5 axb5 12.h3 Bc5 13.Bc2 Re8 14.Nbd2 h6 15.Nb3 Bb6 16.cxd4 exd4 17.Bf4 Be6 18.Qd2 Qe7 19.Rec1 Rbd8 20.Bd1 Nb4 21.Bxc7 Bxc7 22.Rxc7 Qxc7 23.Qxb4 Nh5 24.Nbxd4 Nf4 25.Qd2 g5 26.h4 Bg4 27.Rc1 Qd7 28.hxg5 Bxf3 29.Qxf4 Qxd4 30.g6 fxg6 31.Bb3+ Kh7 32.Rc7+ Rd7 33.Rxd7+ Qxd7 34.Qxf3 Qg7 35.Bd5 Rc8 36.g3 Qxb2 37.Qf7+ Qg7 38.Qe6 Rc3 39.Qd6 b4 40.Qxb4 Rxd3 41.Qd6 Rd1+ 42.Kg2 Re1 1/2-1/2
2020.01.04 5th IIFL Wealth Mumbai Op
2026956 IM Saravana, Kr (2304) IM Koustav, Chatterjee (2447) 1/2-1/2
1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Be7 5.e5 Nfd7 6.Bxe7 Qxe7 7.f4 a6 8.Nf3 c5 9.Qd2 Nc6 10.dxc5 Nxc5 11.Bd3 b5 12.Ne2 f5 13.exf6 Qxf6 14.c3 b4 15.Bc2 bxc3 16.bxc3 O-O 17.O-O a5 18.Qe3 Qe7 19.Ned4 Nxd4 20.cxd4 Ne4 21.Bxe4 dxe4 22.Ng5 Bb7 23.Nxe4 Rab8 24.Rab1 Bd5 25.Nc3 Bc4 26.Rfe1 Qa3 27.h3 h6 28.Kh2 Rb4 29.Rbc1 Rbb8 30.Rc2 Rf7 31.Qe5 Rbf8 32.Re3 Qb4 33.Rg3 a4 34.Ne4 Bd5 35.Nc5 Qb1 36.Re2 Kh7 37.Nxa4 Bc4 38.Rb2 Qc1 39.Qe4+ Kh8 40.Rc3 Bd5 41.Rxc1 Bxe4 42.Nc5 Bd5 43.g3 g5 44.Nd3 Ra7 45.Ne5 Rfa8 46.Rcc2 Kg7 47.a4 gxf4 48.gxf4 h5 49.f5 Rxa4 50.Rc7+ Kf6 51.Rf7+ Kg5 52.fxe6 Ra2 53.Rbf2 Rxf2+ 54.Rxf2 Bxe6 55.Nf3+ Kf4 56.Ng1+ Kg5 57.Rg2+ Kf4 58.Rf2+ Kg5 59.Re2 Bc4 60.Rc2 Ra4 61.Rd2 Bd5 62.Ne2 Ra1 63.Nc3 1/2-1/2
2020.01.03 5th IIFL Wealth Mumbai Op
2026890 IM Koustav, Chatterjee (2447) FM Krishnater, Kushager (2308) 1/2-1/2
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.h3 O-O 6.Nf3 c6 7.Be2 Na6 8.Be3 e5 9.d5 Nh5 10.g3 cxd5 11.cxd5 f5 12.exf5 gxf5 13.Bg5 Nf6 14.Nd2 h6 15.Bh4 Rb8 16.g4 Qd7 17.Rg1 b5 18.gxf5 Qxf5 19.Bxf6 Qxf6 20.Nce4 Qh4 21.Bg4 Rf4 22.Qe2 Bxg4 23.hxg4 Rc8 24.Kd1 Nc5 25.Rc1 Rcf8 26.Rc3 Qh2 27.Rf1 Nxe4 28.Nxe4 Qg2 29.f3 Rxg4 30.Qxg2 Rxg2 31.Rc2 Rxc2 32.Kxc2 Rc8+ 33.Kb3 a5 34.Rg1 Kh7 35.a4 Rc4 36.axb5 Rb4+ 37.Kc3 Rxb5 38.Kc4 Rb4+ 39.Kc3 Rb5 40.Kc4 Rb4+ 1/2-1/2
2020.01.02 5th IIFL Wealth Mumbai Op
2026825 Senthil, Maran K (2305) IM Koustav, Chatterjee (2447) 1/2-1/2
1.d4 Nf6 2.c4 e6 3.g3 d5 4.Bg2 Bb4+ 5.Nc3 O-O 6.Nf3 dxc4 7.O-O Nc6 8.Qa4 Nd5 9.Qc2 Be7 10.Rd1 Rb8 11.e4 Ncb4 12.Qd2 Nxc3 13.Qxc3 b5 14.b3 Bb7 15.Ne1 cxb3 16.axb3 Nc6 17.Bb2 Bb4 18.Qe3 Bxe1 19.Qxe1 Ne7 20.Rxa7 Nc8 21.Raa1 Nd6 22.d5 exd5 23.Qc3 f6 24.exd5 Qd7 25.Rac1 Rf7 26.Re1 Re8 27.Ba3 Rxe1+ 28.Rxe1 Re7 29.Re3 h6 30.Bb4 Qe8 31.Rxe7 Qxe7 32.Ba5 Ne4 33.Qd4 f5 34.g4 Qf6 35.Qd1 Qe5 36.gxf5 Qxf5 37.Qf3 Qxd5 38.Qxe4 Qxe4 39.Bxe4 Bxe4 40.Bxc7 Kf7 1/2-1/2
2020.01.01 5th IIFL Wealth Mumbai Op
2026779 IM Koustav, Chatterjee (2447) Aradhya, Garg (2197) 1-0
1.c4 e6 2.Nc3 d5 3.d4 Nf6 4.cxd5 exd5 5.Bg5 c6 6.e3 h6 7.Bh4 g6 8.Bd3 Bg7 9.Qc2 O-O 10.Nf3 Be6 11.O-O Nbd7 12.Na4 Re8 13.Nd2 g5 14.Bg3 Nh5 15.b4 Nxg3 16.hxg3 b5 17.Nc5 Nxc5 18.Qxc5 Qb6 19.Qc3 a5 20.a4 axb4 21.Qxb4 Qa7 22.a5 c5 23.dxc5 Bxa1 24.Rxa1 d4 25.exd4 Bd5 26.Nb1 Bc4 27.Bxc4 bxc4 28.Nc3 Qa6 29.Nd5 Re2 30.Nb6 Rc2 31.Nxa8 Qxa8 32.a6 c3 33.Qb7 Qxb7 34.axb7 Rb2 35.c6 c2 36.c7 Rb1+ 37.Kh2 c1=Q 1-0
2019.12.31 5th IIFL Wealth Mumbai Op
2026733 WFM Pandey, Srishti (2162) IM Koustav, Chatterjee (2447) 1/2-1/2
1.d4 Nf6 2.Nf3 g6 3.c4 Bg7 4.Nc3 d5 5.Bf4 O-O 6.e3 c5 7.dxc5 Ne4 8.Rc1 Nd7 9.cxd5 Qa5 10.Nd2 Nxc3 11.bxc3 Qxa2 12.Bc4 Qa3 13.O-O Qxc5 14.Bb3 b5 15.c4 Qb4 16.cxb5 Nc5 17.Bc4 Bf5 18.d6 Nd3 19.e4 Nxc1 20.exf5 Nd3 21.dxe7 Rfe8 22.Bg5 Ne5 23.Bd5 Rab8 24.Nf3 Rxe7 25.Bxe7 Qxe7 26.fxg6 hxg6 27.Nxe5 Bxe5 28.Qg4 Kg7 29.Bc6 Qf6 30.g3 Bd4 31.Qe2 Rd8 32.Qf3 Bb6 33.Kg2 Qb2 34.Bd5 Rd7 35.Qb3 Qd4 36.Bf3 Rc7 37.Bc6 Re7 38.Qd1 Qb2 39.Qa1 Qxa1 40.Rxa1 Re2 41.Rf1 1/2-1/2
2019.08.17 22nd Olomouc GM 2019
2329668 Koustav, Chatterjee (2429) IM Eggleston, D (2403) 1/2-1/2
1.Nf3 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qc2 c5 5.a3 Ba5 6.d4 b6 7.Bf4 d5 8.Bxb8 Bxc3+ 9.Qxc3 Ne4 10.Qc2 Rxb8 11.e3 O-O 12.Bd3 Bb7 13.O-O Nf6 14.cxd5 Qxd5 15.dxc5 Rbc8 16.Rfd1 1/2-1/2
2019.08.16 22nd Olomouc GM 2019
2329665 IM Cernousek, L (2451) Koustav, Chatterjee (2429) 0-1
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qc2 O-O 5.Nf3 d5 6.a3 Bxc3+ 7.Qxc3 dxc4 8.Qxc4 b6 9.Bg5 Ba6 10.Qa4 Qd7 11.Qc2 c5 12.dxc5 Rc8 13.Bxf6 gxf6 14.Rd1 Qe7 15.Qe4 bxc5 16.e3 Bb7 17.Qh4 Nd7 18.Bb5 Nf8 19.Ne5 Rc7 20.Nd7 Rxd7 21.Qg3+ Kh8 22.Bxd7 Nxd7 23.Qc7 Bc8 24.O-O Kg7 25.Rd6 Qe8 26.Rfd1 Ne5 27.Qxc5 Bb7 28.f4 Ng6 29.Qd4 Qb5 30.Rc1 Nh4 31.Rc5 Qe2 32.Qd2 Qg4 33.h3 Nf3+ 34.Kf2 Nxd2 0-1
2019.08.15 22nd Olomouc GM 2019
2329659 Koustav, Chatterjee (2429) IM Pulpan, J (2397) 0-1
1.d4 Nf6 2.Bf4 d5 3.e3 c5 4.c3 Nc6 5.Nd2 e6 6.Ngf3 Be7 7.Ne5 Qb6 8.Rb1 Nd7 9.h4 Ncxe5 10.dxe5 Qc7 11.Nf3 c4 12.b4 cxb3 13.Qxb3 b6 14.Bb5 O-O 15.O-O Nc5 16.Qc2 Bb7 17.Rbc1 Rac8 18.c4 dxc4 19.Bxc4 Be4 20.Qe2 Qb7 21.h5 Rfd8 22.Rcd1 h6 23.Kh2 Rxd1 24.Rxd1 a6 25.Nd4 b5 26.Bb3 Nxb3 27.axb3 Kh7 28.f3 Bd5 29.Qd3+ Kg8 30.e4 Bc6 31.g4 Rd8 32.Qc3 Be8 33.Rc1 b4 34.Qe3 Kh7 35.Qg1 Qa7 36.Be3 Bg5 37.Rd1 Bxe3 38.Qxe3 Qc5 39.Kg2 Qxe5 40.f4 Qc5 41.Kf2 e5 0-1
2019.08.14 22nd Olomouc GM 2019
2329654 FM Szwed, J (2384) Koustav, Chatterjee (2429) 1/2-1/2
1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.c4 Nb6 5.exd6 exd6 6.Nc3 Nc6 7.h3 Bf5 8.Nf3 Nb4 9.Qe2+ Be7 10.Ne4 d5 11.cxd5 Qxd5 12.Nc3 Qd7 13.Ne4 Qc6 14.Nc3 Nc2+ 15.Qxc2 Bxc2 16.Bb5 Qxb5 17.Nxb5 Nd5 18.Nc3 Rd8 19.O-O f6 20.Re1 Kf7 21.Bd2 c6 22.Ne4 Rhe8 23.Rac1 Bxe4 24.Rxe4 Bf8 25.Rxe8 Rxe8 26.Kf1 Nc7 27.Re1 Rd8 28.Ba5 b6 29.Bd2 Ne6 30.Be3 Rd5 31.Rc1 Nd8 32.b3 Ke8 33.Ke2 Kd7 34.Rc4 Ne6 35.Ra4 a5 36.Rc4 g6 37.Rc1 Bg7 38.Rd1 b5 39.a4 Kc7 40.g3 f5 41.h4 h6 42.Rd2 Kb7 43.Rd1 Kc7 44.Rd2 Kb8 45.axb5 Rxb5 46.Ra2 Kb7 47.Kd2 c5 48.dxc5 Nxc5 49.Bxc5 Rxc5 50.Ke2 Kb6 51.Nd2 Kb5 52.Ra4 Bc3 53.Nc4 Bb4 54.Nd6+ Kc6 55.Nc4 Rd5 56.Ra2 Kb5 57.Rc2 Bc5 58.Ra2 Bb4 59.Rc2 Rd4 60.Nb2 Re4+ 61.Kd3 Re8 62.Nc4 Re1 63.Ra2 Rc1 64.Na3+ Kb6 65.Nc4+ Ka6 66.Kd4 Rb1 67.Rb2 Rd1+ 68.Ke3 Kb5 69.Ke2 Rd4 70.Ra2 Rd7 71.Rc2 g5 72.hxg5 hxg5 73.Ne3 f4 74.gxf4 gxf4 75.Nc4 Rd4 76.Ra2 Bc3 77.Rc2 Kb4 78.Nxa5 Rd5 79.Nc6+ Kxb3 80.Rc1 Rd6 81.Ne7 Re6+ 82.Kd3 Rd6+ 83.Ke4 Re6+ 84.Kd3 Bb2 85.Rc7 f3 86.Nd5 1/2-1/2
2019.08.13 22nd Olomouc GM 2019
2329650 Koustav, Chatterjee (2429) FM Stigar, P (2207) 1-0
1.c4 c5 2.Nf3 g6 3.e4 Nc6 4.d4 cxd4 5.Nxd4 Nf6 6.Nc3 d6 7.Be2 Nxd4 8.Qxd4 Bg7 9.Be3 O-O 10.Qd2 a5 11.O-O a4 12.Rad1 Qa5 13.Bd4 Be6 14.Qe3 Nd7 15.Nd5 Rfe8 16.Bxg7 Kxg7 17.Nf4 Qe5 18.Nxe6+ fxe6 19.f4 Qc5 20.Kf2 Ra6 21.e5 Rb6 22.Rd2 Ra8 23.Rfd1 Raa6 24.Bg4 Qxe3+ 25.Kxe3 Kf7 26.Kd4 Nc5 27.Re1 Ra5 28.exd6 Rxd6+ 29.Kc3 Rxd2 30.Kxd2 Ra6 31.Re5 Rd6+ 32.Kc3 b6 33.b4 axb3 34.axb3 h5 35.Be2 Kf6 36.b4 Nd7 37.Rb5 e5 38.c5 bxc5 39.bxc5 Rc6 40.fxe5+ Nxe5 41.Rb6 e6 42.Rxc6 Nxc6 43.Bb5 Ne7 44.Kd4 Nd5 45.h4 Nc7 46.Bc4 Kf5 47.Bd3+ Kf6 48.c6 e5+ 49.Kc5 Ne8 50.Kd5 g5 51.hxg5+ Kxg5 52.Kxe5 h4 53.Bf5 1-0
2019.08.12 22nd Olomouc GM 2019
2329643 GM Neuman, P (2392) Koustav, Chatterjee (2429) 0-1
1.c4 e5 2.g3 Nc6 3.Bg2 Bc5 4.Nc3 d6 5.e3 a6 6.Nge2 Ba7 7.d4 h5 8.d5 Nce7 9.h4 Nh6 10.Qd3 O-O 11.f3 f5 12.e4 b5 13.Bg5 bxc4 14.Qxc4 a5 15.Nb5 Bc5 16.Rf1 Nf7 17.Bd2 a4 18.Nec3 Bd7 19.O-O-O Qb8 20.Na3 Qb6 21.Qe2 Bxa3 22.bxa3 Qc5 23.Kb2 Rfb8+ 24.Ka1 c6 25.Qe3 Qxa3 26.Rb1 Rb3 27.Rxb3 axb3 28.Rb1 Qxa2+ 0-1
2019.08.11 22nd Olomouc GM 2019
2329632 GM Arkell, K (2445) Koustav, Chatterjee (2429) 1/2-1/2
1.c4 Nf6 2.Nf3 e6 3.Nc3 d5 4.cxd5 exd5 5.d4 c6 6.Bg5 h6 7.Bh4 Bf5 8.e3 Nbd7 9.Bd3 Bxd3 10.Qxd3 Bd6 11.O-O O-O 12.Rfe1 Re8 13.Qc2 Qb8 14.Bg3 a5 15.Rac1 1/2-1/2
2019.08.11 22nd Olomouc GM 2019
2329641 Koustav, Chatterjee (2429) IM Biolek, R1 (2446) 1/2-1/2
1.d4 d5 2.c4 Nc6 3.Nf3 Bg4 4.cxd5 Bxf3 5.gxf3 Qxd5 6.e3 O-O-O 7.Nc3 Qh5 8.f4 Qxd1+ 9.Kxd1 e6 10.Bg2 Nf6 11.Ke2 Ne7 12.Bd2 Kb8 13.Rhc1 h6 14.Na4 g5 15.Nc5 c6 16.fxg5 hxg5 17.h3 Nf5 18.b4 Nh4 19.Bh1 Nf5 20.b5 Bxc5 21.dxc5 Rxh3 22.Bc3 Nd5 23.Be5+ Ka8 24.bxc6 bxc6 25.Rab1 Rh6 26.Be4 f6 27.Bc7 Rc8 28.Bd6 Rh4 29.Bxf5 exf5 30.Rb3 Rb4 31.Rxb4 Nxb4 32.Rb1 Nd5 33.Rb3 Re8 34.Kd2 a6 35.Rb1 Ka7 36.Rh1 a5 37.Rh3 Re4 38.Rf3 f4 39.exf4 gxf4 40.a3 Ka6 41.Rb3 f3 42.Rxf3 Kb5 43.Rd3 Kc4 44.Rg3 a4 45.Rf3 Re6 46.Rh3 f5 47.Rf3 f4 48.Rh3 Re4 49.Rf3 Re8 50.Rh3 Re6 51.Rf3 Re4 1/2-1/2
2019.08.10 22nd Olomouc GM 2019
2329631 GM Barua, D (2379) Koustav, Chatterjee (2429) 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.c3 O-O 12.Nc2 Bg5 13.Nce3 Be6 14.Be2 1/2-1/2
2019.08.09 6th Prague Summer Open
2340381 Koustav, Chatterjee (2429) GM Yagupov, I (2370) 1/2-1/2
1.d4 d5 2.c4 c6 3.Nc3 Nf6 4.Nf3 e6 5.e3 Nbd7 6.Qc2 Bd6 7.Bd3 O-O 8.O-O dxc4 9.Bxc4 b5 10.Be2 Bb7 11.e4 e5 12.dxe5 Nxe5 13.Nh4 b4 14.Nf5 bxc3 15.Rd1 Ne8 16.Qxc3 Qf6 17.f4 Bc7 18.fxe5 Qxe5 19.Qxe5 Bxe5 20.Be3 Nf6 21.Bc5 Rfe8 22.Bf3 a5 23.Bd6 Re6 24.Rac1 h6 25.Bxe5 Rxe5 26.Nd6 Ra7 27.Nc4 Re8 28.e5 Nd5 29.Nd6 Re7 30.Nxb7 Rexb7 31.Rxc6 Ne7 32.Rd8+ Kh7 33.Be4+ g6 34.Rf6 Ng8 35.Bxb7 Nxf6 36.Bc6 Ng4 37.e6 Re7 38.Re8 Rxe8 39.Bxe8 fxe6 40.Bd7 Kg7 41.Bxe6 Ne3 42.Kf2 Nd1+ 43.Ke2 Nxb2 44.Bb3 a4 45.Kd2 Kf6 46.Bc2 a3 47.Kc3 g5 48.Kb4 Ke7 49.Kxa3 Nc4+ 50.Kb4 Ne3 51.Bb3 Kd6 52.Kb5 Kc7 53.g3 Nf1 54.Bd5 Nxh2 55.a4 Ng4 56.a5 Ne5 57.g4 Kb8 58.Be6 Ka7 59.Bf5 Nf3 60.Bd3 Ne5 61.Be2 Kb7 62.Kc5 Ka7 63.Kd6 Nxg4 64.Bxg4 1/2-1/2
2019.08.08 6th Prague Summer Open
2340368 GM Domogaev, S (2336) Koustav, Chatterjee (2429) 0-1
1.c4 Nf6 2.Nc3 e6 3.e4 d5 4.e5 d4 5.exf6 dxc3 6.bxc3 Qxf6 7.d4 e5 8.Nf3 Nc6 9.Bg5 Qg6 10.d5 Nb8 11.h4 h6 12.h5 Qd6 13.Be3 Nd7 14.Bd3 Be7 15.Nd2 Nc5 16.Bc2 f5 17.g4 O-O 18.gxf5 Bxf5 19.Rg1 e4 20.Nf1 Nd3+ 21.Bxd3 exd3 22.Qd2 Kh8 23.O-O-O Bf6 24.Bd4 Bh7 25.Bxf6 Rxf6 26.Ne3 Raf8 0-1
2019.08.07 6th Prague Summer Open
2340347 GM Qashashvili, A (2497) Koustav, Chatterjee (2429) 1-0
1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.c3 Nf6 5.d3 O-O 6.b4 Be7 7.Bb3 a6 8.Nbd2 d5 9.Qc2 Re8 10.O-O Bf8 11.a3 h6 12.Re1 dxe4 13.dxe4 Nh5 14.Nc4 Bg4 15.Nfd2 Nf4 16.f3 Bh3 17.Ne3 Qg5 18.Ndf1 Rad8 19.Kh1 Nd3 20.Rd1 Nxc1 21.Raxc1 Be6 22.Bd5 Bc8 23.Qa2 Qf6 24.Qc4 Bd7 25.Rd2 Bd6 26.Rcd1 b5 27.Qa2 Rb8 28.Ng3 g6 29.Ng4 Bxg4 30.fxg4 Nd8 31.Rf1 Qg7 32.Rdf2 Rf8 33.Rf6 Rb6 34.c4 bxc4 35.Bxc4 Bc5 36.Rxb6 Bxb6 37.Bxa6 Ne6 38.Bc4 Ng5 39.a4 Be3 40.Bd5 1-0
2019.08.06 6th Prague Summer Open
2340327 Koustav, Chatterjee (2429) FM Thakur, Ak (2273) 1-0
1.Nf3 d5 2.c4 c6 3.e3 Nf6 4.Nc3 g6 5.d4 Bg7 6.Be2 O-O 7.O-O Re8 8.Qb3 e6 9.Rd1 Nbd7 10.Bd2 b6 11.Rac1 Bb7 12.Be1 Qe7 13.a4 Rac8 14.cxd5 exd5 15.a5 Bf8 16.Qa2 Ne4 17.Nxe4 Qxe4 18.axb6 axb6 19.Qa7 Rb8 20.b4 Qe6 21.Rc2 b5 22.Bd3 Bd6 23.Rdc1 Qe7 24.Rb1 Nf6 25.Qa3 Ra8 26.Qb3 Nd7 27.Re2 Nb6 28.e4 dxe4 29.Rxe4 Qf8 30.Bd2 Rxe4 31.Bxe4 Nc4 32.Bc3 Ra3 33.Qc2 Ra4 34.Qb3 Ra3 35.Qc2 Ra4 36.Qc1 Bxb4 37.Bc2 Ba3 38.Qf4 Bd6 39.Qe4 Ra3 40.Bb3 Ra7 41.Bxc4 bxc4 42.d5 c5 43.Qxc4 Qd8 44.Ne5 Ba6 45.Qa4 Bd3 46.Qxa7 Bxe5 47.Rb7 Ba6 48.Bxe5 1-0
2019.08.05 6th Prague Summer Open
2340307 Koustav, Chatterjee (2429) GM Barua, D (2379) 1/2-1/2
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 a6 6.b3 b5 7.Bd3 Nbd7 8.O-O Be7 9.Bb2 bxc4 10.bxc4 Qa5 11.c5 O-O 12.Qc2 g6 13.e4 dxe4 14.Nxe4 Nd5 15.a3 Qc7 16.Rfe1 a5 17.Bc1 Ba6 18.Bxa6 Rxa6 19.Bg5 Bxg5 20.Nfxg5 Qf4 21.Qe2 Raa8 22.g3 Qf5 23.h4 Rab8 24.Nd6 Qf6 25.Qd2 e5 26.Nge4 Qg7 27.dxe5 Nxe5 28.Kg2 a4 29.Qd4 h6 30.Nd2 Nd7 31.Qxa4 Qb2 32.N6c4 Qd4 33.Rad1 Qxc5 34.Ne4 Qb5 35.Qc2 Qb3 36.Qc1 N7f6 37.Nxf6+ Nxf6 38.Na5 Qb2 39.Qf4 Kg7 40.Nxc6 Rb3 41.Nd4 Rbb8 42.Re3 Qb7+ 43.Qf3 Rfd8 44.Rb3 Qa6 45.Rc1 Rdc8 46.Rxc8 Qxc8 47.Rc3 Qe8 48.Rc6 Qe5 49.Ne2 h5 50.Rc2 Ng4 51.Nf4 Qa1 52.Nd5 Qd4 53.Nb4 Qa1 54.Ra2 Qd4 55.Re2 Rb5 56.Qb3 Qb6 57.Qc3+ Kh7 58.Qb3 Rf5 59.f3 Re5 60.Qd3 Ne3+ 61.Kh1 Qc5 62.Nc2 Nxc2 63.Qxc2 Qxa3 64.Kg2 Rxe2+ 1/2-1/2
2019.08.04 6th Prague Summer Open
2340269 Koustav, Chatterjee (2429) Breivik, L (2158) 1-0
1.Nf3 g6 2.e4 Bg7 3.d4 d6 4.h3 Nf6 5.Nc3 c6 6.a4 O-O 7.Be3 Nbd7 8.Be2 e5 9.dxe5 dxe5 10.Nd2 Qe7 11.Nc4 Nc5 12.Qd6 Qxd6 13.Nxd6 Ne6 14.Bc4 Nd4 15.O-O-O Be6 16.Bxe6 Nxe6 17.Nxb7 Nd4 18.f4 Bh6 19.Rd3 Nh5 20.fxe5 Bxe3+ 21.Rxe3 Ne6 22.Na5 c5 23.Nd5 Nhf4 24.Re2 Kg7 25.Nc4 1-0
2019.08.04 6th Prague Summer Open
2340288 FM Sorm, D (2282) Koustav, Chatterjee (2429) 0-1
1.d4 d5 2.c4 e6 3.Nc3 Bb4 4.e3 Nf6 5.Bd3 O-O 6.Nf3 c5 7.O-O cxd4 8.exd4 dxc4 9.Bxc4 b6 10.Bg5 Bb7 11.Qd3 Nbd7 12.Rfd1 h6 13.Bh4 Rc8 14.Bb3 a6 15.a4 Bd6 16.Rac1 Qe7 17.Re1 Bf4 18.Rcd1 Qb4 19.Na2 Qa5 20.Bg3 Bxg3 21.hxg3 Rfd8 22.Bc2 Nc5 23.dxc5 Rxd3 24.b4 Ra3 25.bxa5 Rxa2 26.Bb1 Rxa4 27.axb6 Rc4 28.Ne5 R4xc5 29.Nd7 Rb5 30.Bd3 Rb3 31.Be2 a5 32.Nxf6+ gxf6 33.Rb1 Rbc3 34.Bf3 Bxf3 35.gxf3 Rb8 36.Kg2 Rc6 37.Rb5 Rbxb6 38.Rxa5 Rb2 39.f4 Rcc2 40.Rf1 Kg7 41.Raa1 Kg6 42.Rac1 e5 43.Rxc2 Rxc2 44.fxe5 fxe5 45.Re1 Kf5 46.Re3 f6 47.Rf3+ Kg5 48.Re3 h5 49.Re4 Rd2 50.Re3 h4 51.gxh4+ Kxh4 52.Re4+ Kg5 53.Kg3 Rd4 54.Re1 Rg4+ 55.Kf3 Kf5 56.Re3 Rb4 57.Ra3 Kg5 58.Re3 Rh4 59.Kg3 e4 60.Kg2 Kf4 61.Ra3 Rh5 62.Re3 Rb5 63.Ra3 f5 64.Rc3 Rb2 65.Ra3 Rb5 66.Rc3 Ke5 67.Rh3 Rb2 68.Ra3 f4 69.Ra5+ Kf6 70.Kg1 f3 71.Rc5 Rb1+ 72.Kh2 e3 73.Rc3 e2 74.Rxf3+ Kg5 0-1
2019.08.03 6th Prague Summer Open
2340249 Levi, Netanel (2143) Koustav, Chatterjee (2429) 0-1
1.e4 e6 2.d4 d5 3.Nd2 Be7 4.Ngf3 Nf6 5.e5 Nfd7 6.c3 c5 7.Bd3 b6 8.O-O Ba6 9.Ne1 Bxd3 10.Nxd3 Nc6 11.Qg4 g6 12.Nf3 h5 13.Qf4 Qc7 14.h4 c4 15.Nde1 b5 16.Ng5 Nd8 17.Nc2 a5 18.a3 Nb6 19.Bd2 Ra6 20.Qg3 Nc6 21.f4 Bd8 22.Rfb1 Ne7 23.Ne3 Nf5 24.Nxf5 gxf5 25.Qe1 Qc6 26.Qe2 Kf8 27.Kh2 Kg7 28.Kh3 Be7 29.Qf3 Qa8 30.Qg3 Kf8 31.Qf3 Ra7 32.Qe2 Qe8 33.Qf3 Kg7 34.Qe2 Kh6 35.Be1 Kg6 36.Kh2 Qc6 37.Kh3 Rha8 38.Qf3 Qe8 39.Bd2 Ra6 40.Qe2 R8a7 41.Qf3 Qf8 42.Qd1 Ra8 43.Kh2 R6a7 44.Kh3 b4 45.cxb4 axb4 46.axb4 Bxb4 47.Bxb4 Qxb4 48.Rxa7 Rxa7 49.Qf3 Qb3 50.Qg3 Qxg3+ 51.Kxg3 Ra4 52.Kh2 Rb4 53.Ra1 Ra4 54.Rb1 Ra2 55.b3 c3 56.Rc1 c2 57.Nf3 Rb2 58.Ne1 Rb1 59.Nd3 Rxb3 60.Ne1 Rb4 61.Nxc2 Rc4 62.Kg3 Rc3+ 63.Kf2 Nc4 64.Ke2 Kg7 65.Ke1 Kg6 66.Ke2 f6 67.Kd1 Rd3+ 68.Ke2 Rg3 69.Rg1 Rc3 70.Kd1 fxe5 71.dxe5 d4 72.Ne1 d3 73.Nf3 Rc2 74.Ke1 Ne3 75.Nd2 Rc1+ 76.Kf2 Ng4+ 0-1
2019.08.02 6th Prague Summer Open
2340229 Koustav, Chatterjee (2429) Vrecion, Jiri (2019) 1-0
1.Nf3 Nf6 2.c4 g6 3.Nc3 d5 4.cxd5 Nxd5 5.h4 Bg7 6.h5 Nxc3 7.bxc3 c5 8.Ba3 Qa5 9.Qb3 Nc6 10.Rh4 c4 11.Rxc4 O-O 12.Rc5 Qc7 13.hxg6 hxg6 14.Qa4 Bd7 15.Qh4 Rfe8 16.Ng5 b6 17.Rd5 Nd8 18.e3 Ne6 19.Bb5 Bxb5 20.Qh7+ Kf8 21.Nxe6+ fxe6 22.Rxb5 e5 23.Qxg6 Red8 24.Rb4 Rd6 25.Qg5 Rf6 26.Rg4 Rf7 27.c4 Rd8 28.Bb2 Ke8 29.Qh5 Kf8 30.Rd1 Qc5 31.Re4 1-0
2019.07.27 30th Czech Open A 2019
2349355 IM Matviishen, Viktor (2495) Koustav, Chatterjee (2430) 1-0
1.d4 Nf6 2.c4 e6 3.Nf3 d5 4.g3 dxc4 5.Bg2 Nc6 6.Qa4 Bb4+ 7.Bd2 Nd5 8.Bxb4 Nxb4 9.a3 b5 10.Qxb5 Nc2+ 11.Kd2 Bd7 12.Kxc2 Nxd4+ 13.Nxd4 Bxb5 14.Nxb5 Rb8 15.Bc6+ Kf8 16.Rd1 Qf6 17.N1c3 a6 18.Ne4 Qe5 19.f4 Qh5 20.Nbc3 Qa5 21.Na4 g6 22.Nec5 Kg7 23.Rd7 Rhe8 24.Rad1 Rb6 25.Rxc7 Reb8 26.Rdd7 Rxb2+ 27.Nxb2 Qxc5 28.Bb7 Qb5 29.Rxf7+ Kg8 30.Rg7+ Kh8 31.Rxh7+ Kg8 32.Rhd7 Qb3+ 33.Kc1 c3 34.Nd1 Qxa3+ 35.Kc2 Qa2+ 36.Kxc3 Qxe2 37.Nb2 Qxh2 38.Nd3 Qxg3 39.Bc8 Qh4 40.Re7 Kf8 41.Rh7 Qf6+ 42.Ne5 Kg8 43.Bxe6+ 1-0
2019.07.26 30th Czech Open A 2019
2349243 Koustav, Chatterjee (2430) IM Zanan, E (2505) 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.a3 Be7 13.Nc3 Bc6 14.Bf4 Na5 15.b3 Rc8 16.Qb1 d5 17.Rd1 Qe8 18.Nd4 dxc4 19.Nxc6 Nxc6 20.bxc4 Bc5 21.Nb5 e5 22.Bg5 Ng4 23.Nd6 Qe6 24.Ne4 Bd4 25.Ra2 f5 26.e3 fxe4 27.exd4 Qf5 28.h4 Nf6 29.Bxf6 Qxf6 30.dxe5 Nxe5 31.Qxe4 Rxc4 32.Qe2 Rc5 33.f4 Nf7 34.Rad2 Rc3 35.Rd3 Rxd3 36.Rxd3 Nd6 37.Kh2 Re8 38.Qc2 Nf5 39.Qc4+ Kh8 40.Qa4 Qe7 41.Qd7 Qxd7 42.Rxd7 h5 43.Bf3 g6 44.Rxa7 Re3 45.Kg2 Rb3 46.a4 Rb2+ 47.Kh3 Rb3 48.Kg2 Rb2+ 1/2-1/2
2019.07.25 30th Czech Open A 2019
2349149 FM Gungl, T (2306) Koustav, Chatterjee (2430) 0-1
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 b6 5.Ne2 c5 6.a3 Ba5 7.Rb1 Qe7 8.d5 exd5 9.cxd5 O-O 10.Nf4 Ba6 11.Bxa6 Nxa6 12.Qd3 b5 13.O-O c4 14.Qd4 Bb6 15.Qd1 b4 16.axb4 Nxb4 17.b3 cxb3 18.Qxb3 Bc5 19.Ba3 a5 20.Rfd1 Rab8 21.g3 Qe5 22.Bb2 Qf5 23.e4 Qg5 24.Qc4 Rbc8 25.Qe2 Rfe8 26.Kg2 Bd6 27.Nh3 Qg6 28.f3 Nh5 29.Qf2 Be5 30.Ne2 f5 31.Bxe5 Rxe5 32.Nhf4 Nxf4+ 33.Nxf4 Qe8 34.exf5 Rc2 35.Rd2 Nd3 36.Rxc2 Nxf2 37.Kxf2 Rxf5 38.Rb5 g5 39.Ne2 Qh5 40.f4 Qxh2+ 41.Ke3 gxf4+ 42.gxf4 Qh3+ 43.Kd2 Qa3 44.Rcc5 a4 45.Rc4 Rh5 46.Nc3 Rh2+ 47.Kd3 Qc1 48.Ke4 Qe1+ 49.Kf5 Rh5+ 50.Kg4 Qh4+ 51.Kf3 Qh3+ 52.Ke4 Qf5+ 53.Kd4 Qxf4+ 54.Kc5 Qf8+ 55.Kb6 a3 56.Kc7 Qf6 57.Rb8+ Kf7 58.Rd8 Qe5+ 59.Kc8 Rh3 60.Rxd7+ Kg6 61.Rdc7 Rd3 62.R7c6+ Kf5 63.d6 a2 64.Nxa2 Rxd6 65.Nc3 Rxc6+ 66.Rxc6 h5 67.Na4 h4 68.Rc5 h3 69.Rxe5+ Kxe5 70.Nb2 h2 71.Nd3+ Ke4 0-1
2019.07.24 30th Czech Open A 2019
2349040 Koustav, Chatterjee (2430) FM Punin, Andrii (2305) 1/2-1/2
1.c4 e6 2.Nf3 d5 3.e3 Nf6 4.Nc3 Be7 5.b3 c5 6.Bb2 Nc6 7.cxd5 exd5 8.d4 O-O 9.Be2 Ne4 10.O-O Bf6 11.Na4 Bg4 12.h3 Bxf3 13.gxf3 cxd4 14.fxe4 dxe4 15.exd4 Nxd4 16.Kh1 Be5 17.Rg1 Qh4 18.Bf1 Qxf2 19.Rg2 Qe3 20.Qh5 f5 21.Nc5 Qf3 22.Qh4 Bf6 23.Qg3 Qxg3 24.Rxg3 Ne2 25.Bxe2 Bxb2 26.Rf1 g6 27.Rg2 Kh8 28.Bc4 Be5 29.h4 Rfd8 30.h5 Rd6 31.hxg6 hxg6 32.Ne6 b5 33.Rxg6 bxc4 34.Rh6+ Kg8 35.Rxf5 Bc3 36.Kg2 Re8 37.Rg6+ Kh7 38.Rg3 Rexe6 39.Rh5+ Rh6 40.Rxh6+ Kxh6 41.Rxc3 Rd2+ 42.Kf1 cxb3 43.Rxb3 Kg5 44.Ra3 Rd7 45.Ke2 Kf4 46.Ra6 Rh7 47.Rf6+ Ke5 48.Ra6 Kf5 49.Ke3 Rh3+ 50.Ke2 Ke5 1/2-1/2
2019.07.23 30th Czech Open A 2019
2348908 IM Demidov, M (2546) Koustav, Chatterjee (2430) 1-0
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Nf3 d5 6.Bd2 b6 7.cxd5 exd5 8.Bd3 Bb7 9.O-O a6 10.Ne5 Bd6 11.f4 c5 12.Rf3 b5 13.Rh3 g6 14.Be1 cxd4 15.exd4 Qb6 16.Bf2 Nc6 17.Qd2 Rad8 18.f5 Qc7 19.Nxc6 Bxc6 20.Qg5 Ne4 21.Qh6 f6 22.Bxe4 dxe4 23.fxg6 b4 24.Ne2 Bb5 25.Bg3 Qg7 26.gxh7+ Kh8 27.Qxg7+ Kxg7 28.Bxd6 Rxd6 29.Nf4 Bd7 30.h8=Q+ Rxh8 31.Rxh8 Kxh8 32.d5 Rb6 33.Rc1 Rb7 34.Kf2 Kg7 35.Ke3 Kf7 36.Kxe4 Ke7 37.Kd4 Kd6 38.Nd3 f5 39.Ne5 Bb5 40.Nc4+ Bxc4 41.Rxc4 Rh7 42.Rc6+ Kd7 43.Rxa6 Rxh2 44.Rg6 Rh1 45.Kc5 Ra1 46.Rb6 Rxa2 47.Rb7+ 1-0
2019.07.22 30th Czech Open A 2019
2348816 Koustav, Chatterjee (2430) Burian, Simon (2049) 1-0
1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 Bg7 5.h4 c6 6.cxd5 cxd5 7.Bf4 a6 8.e3 Nc6 9.Rc1 O-O 10.Qb3 Na5 11.Qb4 Nc6 12.Qa3 Bf5 13.Be2 b5 14.b4 Qb6 15.Qb3 e6 16.Ne5 Rfc8 17.O-O h5 18.Nd3 Nd7 19.Bg3 Bf6 20.Nc5 Nxc5 21.dxc5 Qb7 22.a4 Bxc3 23.Rxc3 bxa4 24.Qxa4 Qxb4 25.Qxb4 Nxb4 26.Ra1 a5 27.Bd6 Be4 28.f3 d4 29.exd4 Bc6 30.Bd1 Ra7 31.Rca3 Rca8 32.Kf2 Bb5 33.Ke3 Kg7 34.g4 hxg4 35.fxg4 Nd5+ 36.Kd2 Nb4 37.g5 Nc6 38.Bf3 Ra6 39.Kc3 Rd8 40.Bxc6 Bxc6 41.Rxa5 Rxa5 42.Rxa5 f6 43.Be7 Ra8 44.gxf6+ Kf7 45.Rxa8 Bxa8 46.Kb4 e5 47.dxe5 Ke6 48.Kb5 Kd7 49.e6+ Kxe6 50.c6 Kd5 1-0
2019.07.21 30th Czech Open A 2019
2356621 FM Keller, Pe GER (2279) Koustav, Chatterjee (2430) 1/2-1/2
1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 5.Nc3 Qc7 6.Be3 a6 7.Qf3 d6 8.O-O-O Bd7 9.Nxc6 Bxc6 10.Qg3 Nf6 11.Bd3 b5 12.a3 Qb7 13.f4 a5 14.e5 dxe5 15.fxe5 b4 16.exf6 bxc3 17.bxc3 gxf6 18.Kd2 Qb8 19.Bf4 Qd8 20.Rhe1 Qd5 21.Re2 Rd8 22.Ke1 Bxa3 23.Red2 Qc5 24.Bf1 Rxd2 25.Rxd2 Bc1 26.Rd3 Bxf4 27.Qxf4 Qe5+ 28.Qxe5 fxe5 29.Rd6 Be4 30.Ra6 Ke7 31.Rxa5 Bxc2 32.Rxe5 Ra8 33.Kf2 Ra3 34.Re3 Kd6 35.g4 f6 36.Kg3 e5 37.h4 h5 38.Rf3 Ke7 39.Bh3 hxg4 40.Bxg4 Ra4 41.Rf2 Be4 42.Bf3 Bxf3 43.Rxf3 Ke6 44.h5 f5 45.Kg2 Kf6 46.Rh3 Ra2+ 47.Kf1 Kg7 1/2-1/2
2019.07.20 30th Czech Open A 2019
2356540 Koustav, Chatterjee (2430) FM Meleshko, V (2270) 1-0
1.Nf3 Nf6 2.c4 e6 3.g3 d5 4.Bg2 Be7 5.O-O O-O 6.b3 c5 7.cxd5 Nxd5 8.Bb2 Nc6 9.d4 b6 10.dxc5 Bxc5 11.a3 a5 12.Nbd2 Bb7 13.e4 Nde7 14.e5 Qd3 15.Ne4 Rfd8 16.Re1 Rac8 17.Nfg5 Qxd1 18.Raxd1 Nf5 19.Nxc5 bxc5 20.Rxd8+ Nxd8 21.Bxb7 Nxb7 22.Rd1 Rd8 23.Rxd8+ Nxd8 24.Ne4 Nb7 25.a4 Ne7 26.Kf1 Nd5 27.Ke2 Kf8 28.Kd3 Ke7 29.Kc4 f6 30.Nxc5 Nd8 31.Kb5 fxe5 32.Bxe5 g6 33.f4 1-0
2019.07.19 30th Czech Open A 2019
2356448 WIM Tejaswini, S (2191) Koustav, Chatterjee (2430) 0-1
1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.c4 Nb6 5.exd6 cxd6 6.Nc3 g6 7.Be3 Bg7 8.Rc1 O-O 9.b3 Bf5 10.Nf3 d5 11.c5 Nc8 12.Be2 Nc6 13.O-O Bg4 14.h3 Bxf3 15.Bxf3 e6 16.Qd2 N8e7 17.Ne2 Nf5 18.g4 Nxe3 19.Qxe3 Qh4 20.Bg2 h5 21.gxh5 Qxh5 22.Rcd1 Bf6 23.Qf3 Qxf3 24.Bxf3 Kg7 25.Bg2 Rh8 26.a3 Rh4 27.f4 g5 28.fxg5 Bxg5 29.Rd3 Nxd4 30.Ng3 Kg6 31.b4 a5 32.Rb1 Nc6 33.b5 Ne5 34.Rc3 Bd2 35.Rc2 Be3+ 36.Kh1 Rc4 37.Rxc4 Nxc4 38.c6 bxc6 39.bxc6 Rc8 40.Rb3 Rxc6 41.Bf1 Bf4 42.Ne2 Be5 43.Rd3 Rb6 44.a4 Rb1 45.Kg2 Ra1 0-1
2019.06.24 2nd Goa Open 2019
2377943 GM Gukesh, D (2543) Koustav, Chatterjee (2404) 1-0
1.c4 c5 2.Nc3 Nc6 3.Nf3 g6 4.e3 Nf6 5.d4 cxd4 6.Nxd4 Bg7 7.g3 d6 8.Bg2 Bd7 9.O-O h5 10.h4 Qc8 11.Re1 O-O 12.b3 Bg4 13.Qd2 Rd8 14.Bb2 a6 15.Rac1 e5 16.Nf3 Bxf3 17.Bxf3 Qf5 18.Bg2 e4 19.Rcd1 Ne5 20.Nd5 Nxd5 21.Qxd5 Nd3 22.Rxd3 exd3 23.Qxf5 gxf5 24.Bxg7 Kxg7 25.Bxb7 Rab8 26.Bf3 a5 27.Rd1 a4 28.Rxd3 axb3 29.axb3 Kg6 30.Kg2 f6 31.Kf1 Rdc8 32.Bd1 Rb6 33.Ke2 Ra8 34.Bc2 Ra2 35.Kd2 Ra5 36.Kc3 Kf7 37.Rd5 Rxd5 38.cxd5 f4 39.exf4 Ke7 40.b4 Ra6 41.Kb2 Kd8 42.f3 Ra7 43.g4 Rg7 44.gxh5 Rg3 45.h6 Rh3 46.h7 Rxh4 47.Kc3 Kc7 48.Bg6 1-0
2019.06.23 2nd Goa Open 2019
2377912 Koustav, Chatterjee (2404) GM Fier, A (2543) 1/2-1/2
1.Nf3 Nf6 2.c4 e6 3.e3 c5 4.Nc3 Be7 5.d4 cxd4 6.exd4 d5 7.cxd5 Nxd5 8.Bd3 O-O 9.O-O Nc6 10.a3 Nf6 11.Bg5 b6 12.Qe2 Bb7 13.Rad1 h6 14.Bxf6 Bxf6 15.Be4 Re8 16.Ne5 Nxd4 17.Qe3 Bxe4 18.Qxe4 Qc7 19.Ng4 Nf5 20.Nxf6+ gxf6 21.Nd5 exd5 22.Qxf5 Qe5 23.Rxd5 Qxf5 24.Rxf5 Kg7 25.h4 Re2 26.b3 Rd8 27.Rf3 Red2 28.Re1 R8d3 29.Ree3 Rxe3 30.Rxe3 b5 1/2-1/2
2019.06.21 2nd Goa Open 2019
2377824 GM Stupak, K (2584) Koustav, Chatterjee (2404) 1-0
1.d4 Nf6 2.c4 e6 3.Nf3 d5 4.Bg5 Bb4+ 5.Nbd2 dxc4 6.e3 b5 7.a3 Ba5 8.Be2 Bb7 9.O-O O-O 10.b3 c3 11.b4 cxd2 12.bxa5 Qd5 13.Bxf6 gxf6 14.Qxd2 a6 15.Rfc1 Qd6 16.a4 bxa4 17.Rxa4 Nd7 18.Rac4 Rfc8 19.Qc3 c6 20.Ne1 Rc7 21.Nd3 Rac8 22.Nc5 Nxc5 23.Rxc5 Kh8 24.g3 Re7 25.Bf3 e5 26.d5 e4 27.Bg4 Rg8 28.dxc6 Rxg4 29.cxb7 Rxb7 30.Rc6 Qe5 31.Rxf6 Qxc3 32.Rxc3 Rg5 33.Rxa6 Rb1+ 34.Kg2 Rf5 35.g4 Rf3 36.Rc2 Ra1 37.Ra8+ Kg7 38.Re8 Rxa5 39.Rxe4 Rf6 40.Rcc4 Ra7 41.h3 Rg6 42.Rc5 Rf6 43.Rec4 h6 44.Kg3 Ra1 45.Rf4 1-0
2019.06.20 2nd Goa Open 2019
2377794 Koustav, Chatterjee (2404) GM Idani, P (2597) 1/2-1/2
1.c4 e5 2.g3 Nf6 3.Bg2 d5 4.cxd5 Nxd5 5.Nc3 Nxc3 6.bxc3 Nc6 7.Rb1 Bc5 8.d3 O-O 9.Nf3 Rb8 10.O-O b6 11.Qa4 Qe8 12.Qc2 Bd6 13.e4 Qe7 14.Be3 Na5 15.Nd2 Ba6 16.Nb3 Nb7 17.f4 f6 18.Rbd1 Nc5 19.Rfe1 Nxb3 20.axb3 c5 21.f5 Rbd8 22.g4 Bb8 23.b4 Kh8 24.bxc5 bxc5 25.c4 Bb7 26.Ra1 Rd7 27.Ra5 Rdd8 28.Raa1 Rd7 29.Ra5 1/2-1/2
2019.06.16 12th Mayors Cup Open 2019
2381386 Koustav, Chatterjee (2404) GM Rahman, Zia (2481) 0-1
1.d4 d5 2.c4 e6 3.Nc3 c6 4.e3 Nf6 5.Nf3 Nbd7 6.Qc2 Bd6 7.Bd3 O-O 8.O-O dxc4 9.Bxc4 a6 10.Rd1 b5 11.Bd3 Bb7 12.Ng5 Bxh2+ 13.Kxh2 Ng4+ 14.Kg1 Qxg5 15.f3 Ngf6 16.e4 Qh4 17.Be3 e5 18.Ne2 Rfe8 19.a4 Rac8 20.b4 Nh5 21.g4 Ng3 22.Kg2 Nxe2 23.Bxe2 Qe7 24.dxe5 Nxe5 25.Bc5 Qg5 26.Qd2 Qg6 27.Kf2 h6 28.Qc3 Qf6 29.Kg3 Nxg4 30.Qxf6 Nxf6 31.Bb6 Re6 32.Bf1 Rce8 33.Bc7 Bc8 34.Bh3 Nh5+ 35.Kh4 Rg6 36.Bxc8 Rxc8 37.Be5 Re8 38.Bd6 Nf6 39.axb5 axb5 40.Ra6 Rc8 41.Bc5 Nh7 42.Rd3 Ng5 43.Ra7 Re8 44.Be7 Ne6 45.Rdd7 Rg2 46.Bd6 Ng5 47.Bf4 Nxf3+ 48.Kh3 Rg6 49.Rxf7 Rxe4 50.Rf5 Re1 51.Bh2 Nxh2 0-1
2019.06.15 12th Mayors Cup Open 2019
2381366 Koustav, Chatterjee (2404) GM Jojua, D (2580) 1/2-1/2
1.d4 g6 2.c4 Bg7 3.Nc3 c5 4.d5 d6 5.e4 e6 6.Nf3 Ne7 7.Bd3 O-O 8.h3 h6 9.O-O g5 10.Nh2 Ng6 11.Qh5 Nf4 12.Bxf4 gxf4 13.Ng4 Qg5 14.Qxg5 hxg5 15.Nb5 exd5 16.exd5 Bxg4 17.hxg4 Be5 18.Nc7 Nd7 19.Nxa8 Rxa8 20.Rab1 Bd4 21.Bf5 Ne5 22.Rfc1 a5 23.b3 Kg7 24.Rc2 b6 25.a4 Rh8 26.Rd1 Re8 27.Rxd4 cxd4 28.Rd2 d3 29.f3 Kf6 30.Kf2 Re7 1/2-1/2
2019.06.14 12th Mayors Cup Open 2019
2381354 Balkishan, A (2074) Koustav, Chatterjee (2404) 0-1
1.Nf3 Nf6 2.g3 d5 3.Bg2 c5 4.O-O e6 5.c4 d4 6.d3 Nc6 7.e3 Bd6 8.exd4 cxd4 9.a3 a5 10.Re1 O-O 11.Bg5 h6 12.Bxf6 Qxf6 13.Nbd2 Qd8 14.Rc1 e5 15.c5 Bc7 16.Nc4 Re8 17.b4 axb4 18.axb4 Nxb4 19.Nfxe5 Qf6 20.Qb3 Nc6 21.Nxc6 Rxe1+ 22.Rxe1 bxc6 23.Qb2 Ba6 24.Ra1 Rb8 25.Qxb8+ Bxb8 26.Rxa6 Qe7 27.Rxc6 Qe1+ 28.Bf1 Qe8 29.Ra6 Bc7 30.c6 Qb8 31.Ra1 g6 32.Bg2 Kg7 33.Re1 Kf6 34.Be4 h5 35.Kg2 Kg7 36.Re2 Qd8 37.Rb2 f5 38.Bf3 g5 39.Kf1 g4 40.Bg2 h4 41.gxh4 f4 42.f3 Qf6 43.Rb5 Qxc6 44.Rg5+ Kf8 45.fxg4 Qa4 46.Ke2 Qa2+ 47.Kf3 Qc2 48.Bf1 Qxh2 49.h5 Qg3+ 50.Ke2 f3+ 51.Kd1 Ke8 52.h6 Qf2 53.h7 Qxf1+ 54.Kc2 Qe2+ 55.Nd2 Be5 56.Rf5 f2 57.g5 Bh8 58.g6 Qe6 59.Rxf2 Qxg6 60.Rh2 Qg3 61.Rh5 Kf7 62.Ne4 Qg2+ 63.Kb3 Kg6 64.Rh4 Qe2 65.Rh3 Qf1 66.Rg3+ Kxh7 67.Kc4 Qf7+ 68.Kc5 Qc7+ 69.Kd5 Qd7+ 70.Kc5 Bg7 71.Rg5 Qe6 72.Nd6 Bf8 73.Rd5 Qd7 74.Rxd4 Qc7+ 75.Kd5 Qxd6+ 76.Ke4 Qe6+ 77.Kf3 Bh6 78.Re4 Qh3+ 79.Ke2 Qg2+ 80.Ke1 Qd2+ 81.Kf1 Qxd3+ 82.Re2 Be3 0-1
2019.06.13 12th Mayors Cup Open 2019
2381330 GM Burmakin, V (2526) Koustav, Chatterjee (2404) 1/2-1/2
1.Nf3 Nf6 2.g3 d5 3.Bg2 e6 4.c4 Be7 5.O-O O-O 6.b3 b6 7.cxd5 Nxd5 8.Bb2 Bb7 9.d4 c5 10.dxc5 Bxc5 11.a3 a5 12.Nbd2 Nd7 13.Qb1 Rc8 14.Rd1 Be7 15.e4 N5f6 16.Nd4 Ba6 17.b4 e5 18.Nf5 g6 19.Nxe7+ Qxe7 20.Rc1 axb4 21.axb4 Qxb4 22.Rxa6 Qxd2 23.Rd1 Qc2 24.Qxc2 Rxc2 25.Ba3 Rfc8 26.Bh3 R8c7 27.f4 h5 28.Bd6 Rc1 29.Ra1 Rxd1+ 30.Rxd1 Ra7 31.fxe5 Nxe4 32.e6 fxe6 33.Bxe6+ Kh7 34.Bf4 Ndf6 35.Rb1 1/2-1/2
2019.06.12 12th Mayors Cup Open 2019
2381292 Koustav, Chatterjee (2404) GM Tukhaev, A (2527) 1/2-1/2
1.d4 g6 2.c4 c5 3.Nf3 cxd4 4.Nxd4 Bg7 5.e4 Nc6 6.Be3 Nf6 7.Nc3 O-O 8.Be2 d6 9.O-O Bd7 10.Nc2 Qa5 11.f3 Rfc8 12.Qd2 Ne5 13.b3 b5 14.b4 Qc7 15.c5 a6 16.a4 bxa4 17.Nxa4 Bxa4 18.Rxa4 dxc5 19.bxc5 Nfd7 20.Rxa6 Nxc5 21.Rxa8 Rxa8 22.Nb4 Qa5 23.Qc2 Qxb4 24.Qxc5 Qxc5 25.Bxc5 Nc6 26.Rd1 Ra1 27.Rxa1 Bxa1 28.Kf1 Bd4 29.Ba3 e6 30.Bb5 Ne5 31.Be7 Kg7 32.Ke2 f6 33.Ba4 1/2-1/2
2019.06.12 12th Mayors Cup Open 2019
2381308 Koustav, Chatterjee (2404) GM Turov, M (2579) 1/2-1/2
1.d4 Nf6 2.c4 e6 3.g3 Bb4+ 4.Bd2 a5 5.Bg2 O-O 6.Nc3 d5 7.a3 Be7 8.c5 b6 9.cxb6 c5 10.Na4 Nbd7 11.Bf4 Nxb6 12.Nxc5 a4 13.Nf3 Nc4 14.Nd2 Bxc5 15.dxc5 Qa5 16.O-O Qxc5 17.Nxc4 Qxc4 18.Rc1 Qb5 19.Bd6 Re8 20.Qd4 Ne4 21.Bxe4 dxe4 22.Qxe4 Ba6 23.Rfe1 Qxb2 24.Rc7 Qd2 25.Bb4 Qd5 26.Qxd5 exd5 27.e3 Bc4 28.Rd1 Rac8 29.Rxc8 Rxc8 30.Kg2 f6 31.Ra1 1/2-1/2
2019.06.11 12th Mayors Cup Open 2019
2381273 GM Mchedlishvili, M (2609) Koustav, Chatterjee (2404) 0-1
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qc2 O-O 5.a3 Bxc3+ 6.Qxc3 d5 7.Bg5 dxc4 8.Qxc4 b6 9.Rd1 Ba6 10.Qa4 h6 11.Bh4 Qe7 12.Nf3 c5 13.g4 Bb7 14.g5 hxg5 15.Bxg5 Bxf3 16.exf3 Rd8 17.Rg1 cxd4 18.Bh6 g6 19.Bg5 e5 20.h4 Qd6 21.Rc1 Kg7 22.Bd3 Nbd7 23.Rc6 Qd5 24.h5 Qxf3 25.Bxg6 Kh8 26.Bxf7 d3 27.Kf1 Rf8 28.Qc4 Qh3+ 29.Ke1 Qf3 30.Kf1 Nh7 31.Be3 Rxf7 32.Rg3 d2 0-1
2019.06.10 12th Mayors Cup Open 2019
2383439 Koustav, Chatterjee (2404) GM Ter Sahakyan, S (2611) 1/2-1/2
1.d4 Nf6 2.c4 e6 3.g3 d5 4.Bg2 Bb4+ 5.Bd2 Bd6 6.Nc3 c6 7.Nf3 Nbd7 8.O-O O-O 9.b3 h6 10.Qc2 b6 11.e4 dxe4 12.Nxe4 Nxe4 13.Qxe4 Bb7 14.Bc3 Qc7 15.Rad1 Rad8 16.Rfe1 a5 17.Qc2 Bb4 18.Qb2 c5 19.a3 Bxc3 20.Qxc3 Bxf3 21.Bxf3 Nf6 22.Kg2 Rd7 23.d5 exd5 24.cxd5 Ne8 25.Re5 Nd6 26.Rde1 Nb5 27.Qd3 Nd4 28.Bg4 Rd6 29.b4 axb4 30.axb4 g6 31.Rc1 Nc6 32.Re4 f5 33.bxc5 bxc5 34.Re6 Nb4 35.Qe3 fxg4 36.Rxc5 Rxe6 37.dxe6 Qe7 38.Rb5 Nc6 39.Rb6 Nd8 40.Qxh6 Qf6 41.Qe3 Qf3+ 42.Qxf3 gxf3+ 43.Kh3 Re8 44.e7 Rxe7 45.Rxg6+ Kf7 1/2-1/2
2019.06.07 12th KIIT Cat A Open 2019
2383281 GM Laxman, R (2446) Koustav, Chatterjee (2404) 1/2-1/2
1.d4 d5 2.Nf3 Nf6 3.c4 c6 4.Nc3 dxc4 5.a4 Bf5 6.Nh4 Bc8 7.Nf3 Bf5 8.Nh4 Bc8 9.Nf3 Bf5 10.Nh4 Bc8 1/2-1/2
2019.06.06 12th KIIT Cat A Open 2019
2383264 Koustav, Chatterjee (2404) GM Kostenko, P (2450) 1/2-1/2
1.c4 f5 2.g3 Nf6 3.Bg2 e6 4.Nf3 Be7 5.O-O O-O 6.b3 b6 7.Ne5 c6 8.Bb2 Bb7 9.d4 d5 10.Nd2 Bd6 11.Ndf3 Qe7 12.Rc1 Ne4 13.Qd3 c5 14.dxc5 bxc5 15.e3 Na6 16.Rfd1 Nb4 17.Qb1 a5 18.a3 Na6 19.Qc2 Rfb8 20.Nd3 Rd8 21.cxd5 exd5 22.Nf4 Nc7 23.Nh4 g6 24.Ne2 Ne6 25.Ba1 Kf7 26.Nc3 Bc7 27.Nxe4 dxe4 28.f3 Ng5 29.f4 Ne6 30.Bf1 Ba6 31.Ng2 Bxf1 32.Kxf1 Rab8 33.Ne1 Rxd1 34.Rxd1 Rd8 35.Rxd8 Bxd8 36.Qc4 Qd7 37.Ke2 Be7 38.Bc3 Bd8 39.a4 Qc7 40.Nc2 Bf6 41.Be1 Qd8 42.Qb5 Qf8 1/2-1/2
2019.06.05 12th KIIT Cat A Open 2019
2383239 GM Vasquez Schroeder, R (2476) Koustav, Chatterjee (2404) 1/2-1/2
1.d4 Nf6 2.Bf4 d5 3.e3 c5 4.dxc5 Nc6 5.Bb5 e6 6.b4 a5 7.c3 Bd7 8.Qb3 axb4 9.cxb4 Ne4 10.Ne2 Qf6 11.Nbc3 g5 12.Bg3 h5 13.Rc1 Nxc3 14.Nxc3 h4 15.Bc7 Rc8 16.Bb6 h3 17.gxh3 Rxh3 18.Bxc6 bxc6 19.Ne2 e5 20.a4 Rf3 21.Ng3 Rxf2 22.Rf1 Rxf1+ 23.Nxf1 Qf3 24.Rc2 g4 25.Rf2 Qe4 26.Ng3 Qg6 27.Qc2 1/2-1/2
2019.06.04 12th KIIT Cat A Open 2019
2383209 IM Suvrajit, S (2208) Koustav, Chatterjee (2404) 0-1
1.c4 e6 2.Nc3 d5 3.d4 c6 4.cxd5 exd5 5.Bf4 Bd6 6.Bxd6 Qxd6 7.e3 Ne7 8.Bd3 O-O 9.Qc2 Ng6 10.h3 Re8 11.Nf3 Qf6 12.O-O-O b5 13.Kb1 a5 14.Ka1 Na6 15.Rc1 Nb4 16.Qd2 Nxd3 17.Qxd3 Qd6 18.Ne2 b4 19.Qd2 Ba6 20.h4 Nf8 21.Nf4 Nd7 22.g4 a4 23.Nd3 Bxd3 24.Qxd3 c5 25.Ng5 h6 26.Qh7+ Kf8 27.Nf3 a3 28.b3 Qa6 29.Qc2 Rac8 30.dxc5 Nxc5 31.Qd2 Qb6 32.Qxd5 Qf6+ 33.Nd4 Qxf2 34.Rc2 Qxe3 35.Rf1 Qe1+ 36.Rc1 Nxb3+ 37.Nxb3 Rxc1+ 38.Nxc1 Qc3+ 39.Kb1 Qb2# 0-1
2019.06.04 12th KIIT Cat A Open 2019
2383220 Koustav, Chatterjee (2404) GM Neverov, V (2495) 1/2-1/2
1.d4 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 O-O 5.Nc3 Nc6 6.Nf3 d5 7.cxd5 Nxd5 8.O-O Nb6 9.e3 e5 10.dxe5 Nxe5 11.Nxe5 Bxe5 12.Qc2 c6 13.e4 Be6 14.Bh6 Bg7 15.Bxg7 Kxg7 16.Rfe1 Qe7 17.b3 Rad8 18.Qb2 Kg8 19.Ne2 f6 20.Qc3 Nd7 21.Rad1 Qc5 22.Qxc5 Nxc5 23.Nd4 Bf7 24.f3 Rd6 25.Nc2 Rfd8 26.Ne3 Rd2 27.Bf1 Kf8 28.Rxd2 Rxd2 29.Re2 Rxe2 30.Bxe2 Ke7 31.Kf2 b6 32.Nc2 Nb7 1/2-1/2
2019.06.03 12th KIIT Cat A Open 2019
2384580 Koustav, Chatterjee (2404) GM Burmakin, V (2519) 1/2-1/2
1.c4 c6 2.Nf3 d5 3.g3 Bf5 4.Qb3 Qb6 5.cxd5 Bxb1 6.Qxb6 axb6 7.Rxb1 cxd5 8.a3 Nc6 9.d4 e6 10.e3 Bd6 11.Bd3 Nf6 12.Ke2 Ke7 13.Bd2 Rhc8 14.Rhc1 Na5 15.Bxa5 bxa5 16.a4 h6 17.Nd2 Bb4 18.Nb3 Nd7 19.Bb5 Nf6 20.Bd3 Nd7 21.Bb5 Nf6 22.Bd3 Nd7 23.Bb5 Nf6 24.Bd3 Nd7 25.Bb5 Nf6 26.Bd3 1/2-1/2
2019.06.02 12th KIIT Cat A Open 2019
2384552 Koustav, Chatterjee (2404) Rathneesh, R (2111) 1-0
1.Nf3 Nf6 2.g3 d5 3.d4 e6 4.c4 Be7 5.Bg2 O-O 6.O-O dxc4 7.Qc2 a6 8.a4 Bd7 9.Rd1 Bc6 10.Nc3 Bb4 11.Ne5 Bxg2 12.Kxg2 Nc6 13.Nxc6 bxc6 14.Na2 Rb8 15.f3 Qd7 16.Qxc4 c5 17.Bg5 Qd5 18.Qxd5 Nxd5 19.e4 h6 20.Bc1 Nf6 21.Nxb4 Rxb4 22.dxc5 Rfb8 23.Ra2 Kf8 24.Kf2 Rc4 25.Be3 Rbb4 26.Ke2 Rxa4 27.Rxa4 Rxa4 28.Kd3 Nd7 29.Kc3 1-0
2019.06.02 12th KIIT Cat A Open 2019
2384558 GM Iturrizaga, E (2637) Koustav, Chatterjee (2404) 1/2-1/2
1.c4 Nf6 2.Nc3 e6 3.Nf3 d5 4.e3 b6 5.b3 Bb7 6.Bb2 Be7 7.g3 O-O 8.Bg2 c5 9.O-O dxc4 10.bxc4 Nc6 11.Qe2 a6 12.Rfd1 Qc7 13.Ne1 Na5 14.f4 Bxg2 15.Nxg2 Rab8 16.g4 Ne8 17.a4 Nd6 18.d3 f5 19.gxf5 Nxf5 20.Ne4 Nc6 21.Kh1 b5 22.axb5 axb5 23.cxb5 Rxb5 24.Bc3 Rfb8 25.Qg4 Rb3 26.Rac1 Qd8 27.Ng3 g6 28.h4 Nb4 29.Nxf5 exf5 30.Qe2 Qd5 31.Rd2 Ra8 32.e4 Qe6 33.Bxb4 Rxb4 34.exf5 Qxe2 35.Rxe2 Kf7 36.Re5 Rd4 1/2-1/2
2019.02.27 Aeroflot Open B 2019
2422413 Saydaliev, Saidakbar (2390) Koustav, Chatterjee (2332) 1/2-1/2
1.e4 c6 2.Nf3 d5 3.exd5 cxd5 4.Ne5 Nc6 5.d4 Nf6 6.c3 e6 7.Bd3 Bd6 8.Qe2 Qc7 9.Nxc6 bxc6 10.Bg5 h6 11.Bh4 O-O 12.Bxf6 gxf6 13.Qg4+ Kh8 14.Qh4 Kg7 15.Qg4+ Kh8 16.Qh4 1/2-1/2
2019.02.26 Aeroflot Open B 2019
2422338 Koustav, Chatterjee (2332) GM Hayrapetyan, Ho (2434) 0-1
1.Nf3 d5 2.c4 e6 3.g3 Nf6 4.b3 Be7 5.Bg2 O-O 6.O-O c5 7.cxd5 Nxd5 8.Bb2 Nc6 9.d4 b6 10.dxc5 Bxc5 11.a3 a5 12.Nbd2 Ba6 13.Re1 Rc8 14.e4 Nf6 15.e5 Nd5 16.Ne4 Be7 17.Nfd2 b5 18.Qg4 b4 19.Nd6 Bxd6 20.exd6 Nc3 21.axb4 f5 22.Qh5 Nd4 23.Bxc3 Rxc3 24.bxa5 Qxd6 25.Nc4 Qb4 26.Rad1 Rxb3 27.Ne5 Rb2 28.Bf1 Bxf1 29.Rxf1 Ne2+ 30.Kg2 Qe4+ 31.Nf3 Rb3 32.Rd7 f4 33.Qg4 g6 34.Re1 Qc6 35.Rxe2 Qxd7 36.gxf4 Rf5 37.a6 Ra3 38.Nh4 Qd5+ 39.f3 Qc4 40.Rd2 Ra2 41.Rxa2 Qxa2+ 42.Kg3 Ra5 43.Nxg6 hxg6 44.Qxg6+ Kf8 45.Qf6+ Ke8 46.Qh8+ Kd7 47.Qg7+ Kd6 48.Qf8+ Kc6 49.Qc8+ Kb6 50.Qb7+ Kc5 51.Qc7+ Kd4 52.Qb6+ Kd3 53.Qd6+ Ke2 54.h4 Qd5 0-1
2019.02.25 Aeroflot Open B 2019
2422269 GM Bocharov, D (2540) Koustav, Chatterjee (2332) 1-0
1.c4 Nf6 2.g3 e6 3.Nf3 d5 4.Bg2 Be7 5.O-O O-O 6.b3 b6 7.Bb2 Bb7 8.e3 c5 9.Nc3 dxc4 10.bxc4 Nc6 11.Qe2 Rc8 12.Ne1 Qd7 13.f4 Rfd8 14.d3 Ne8 15.Rd1 f5 16.g4 Nd6 17.h3 Bf6 18.Nf3 g6 19.gxf5 Nxf5 20.Ne4 Bg7 21.Nf6+ Bxf6 22.Bxf6 Ng3 23.Qf2 Nxf1 24.Bxf1 Rf8 25.Ba1 Rce8 26.Qb2 e5 27.Bg2 h6 28.fxe5 Kh7 29.Qe2 Nd8 30.Nd2 Nc6 31.Nb3 Nd8 32.d4 cxd4 33.exd4 1-0
2019.02.24 Aeroflot Open B 2019
2422138 GM Gasanov, E (2500) Koustav, Chatterjee (2332) 1/2-1/2
1.d4 Nf6 2.c4 e6 3.Bg5 Bb4+ 4.Nd2 h6 5.Bh4 g5 6.Bg3 Ne4 7.Nf3 Nc6 8.a3 Bxd2+ 9.Nxd2 Nxg3 10.hxg3 Nxd4 11.Ne4 Nc6 12.Qd2 f5 13.Nxg5 Qf6 14.Nf3 d6 15.e3 Bd7 16.O-O-O O-O-O 17.Be2 Kb8 18.Rh4 Ne7 19.Rdh1 e5 20.Qc3 c5 21.Kb1 Bc6 1/2-1/2
2019.02.24 Aeroflot Open B 2019
2422203 Koustav, Chatterjee (2332) FM Gaifullin, Artur (2448) 1/2-1/2
1.d4 Nf6 2.c4 e6 3.g3 d5 4.Nf3 Bb4+ 5.Bd2 Be7 6.Bg2 O-O 7.O-O Nbd7 8.Qc2 Ne4 9.Nc3 Nxd2 10.Nxd2 c6 11.Rad1 Bf6 12.e3 b5 13.cxb5 cxb5 14.Nxb5 Ba6 15.a4 Qa5 16.Rfe1 Rfc8 17.Qb3 Rab8 18.Qa3 Bxb5 19.axb5 Qxa3 20.bxa3 Rxb5 21.Rb1 Ra5 22.Rb7 Nb6 23.Ra1 g6 24.Bf1 Rc3 25.a4 e5 26.dxe5 Bxe5 27.Ra2 d4 28.Ne4 Rc1 29.exd4 Bxd4 30.Rd2 Rxa4 31.Kg2 Be5 32.Nd6 Bxd6 33.Rxd6 Kg7 34.Re6 Nd5 35.Re5 Rc7 36.Rxc7 Nxc7 37.Re7 Ne6 38.Bb5 Ra5 39.Bc4 Kf6 40.Rb7 Ra4 41.Bb3 Ra3 42.Bxe6 Kxe6 43.g4 g5 44.Rb5 h6 45.h4 gxh4 46.Rh5 h3+ 47.Kh2 Rf3 48.Rxh6+ Rf6 49.Rh5 Rxf2+ 50.Kxh3 Rd2 51.Ra5 Rd7 52.g5 Rd5 53.Ra6+ Kf5 54.Rf6+ Kxg5 55.Rxf7 a5 56.Kg3 Rf5 57.Ra7 Kf6 58.Kg4 Rc5 59.Kf4 Ke6 60.Ke4 Kd6 61.Kd4 Kc6 1/2-1/2
2019.02.23 Aeroflot Open B 2019
2423390 Koustav, Chatterjee (2332) IM Lavrik, D (2422) 1/2-1/2
1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.e3 Bg4 5.h3 Bh5 6.g4 Bg6 7.Ne5 e6 8.Nxg6 hxg6 9.Bg2 Be7 10.Nd2 g5 11.Qe2 Nbd7 12.O-O Nf8 13.cxd5 exd5 14.f4 Ne6 15.f5 Nc7 16.Nb1 Nb5 17.Nc3 Nd6 18.Bd2 Nde4 19.Be1 Bd6 20.Nxe4 dxe4 21.Rc1 Qe7 22.b4 Bxb4 23.Bxb4 Qxb4 24.Rc5 Nd7 25.Rc4 Qe7 26.Rb1 Nb6 27.Rc5 Nd5 28.Qb2 Rb8 29.Rxc6 O-O 30.Rc5 Nxe3 31.Re1 Nxg2 32.Qxg2 Qd6 33.Rxe4 Rbc8 34.Qb2 Qb6 35.Qf2 Rxc5 36.dxc5 Qc6 37.Qd4 Qb5 38.a4 Qb1+ 39.Kf2 Rc8 40.Re1 Qc2+ 41.Re2 Qc1 1/2-1/2
2019.02.22 Aeroflot Open B 2019
2425810 IM Li, Di (2534) Koustav, Chatterjee (2332) 1/2-1/2
1.d4 Nf6 2.c4 e6 3.Nf3 d5 4.Nc3 dxc4 5.e4 Bb4 6.Bg5 c5 7.e5 cxd4 8.Nxd4 Qa5 9.exf6 Bxc3+ 10.bxc3 Qxg5 11.fxg7 Qxg7 12.Qd2 O-O 13.Bxc4 Rd8 14.Qe3 Bd7 15.O-O Nc6 16.Nf3 Rac8 17.Rad1 Be8 18.Bb3 h6 19.g3 Ne7 20.Ne5 b6 21.f4 Nf5 22.Rxd8 Rxd8 23.Qf2 Qf8 24.g4 Ng7 25.f5 exf5 26.gxf5 Qe7 27.Qe3 Rd6 28.Qg3 Qg5 29.Ng4 Bb5 30.h4 Qd2 31.Rf2 Qe1+ 32.Kh2 Bc6 33.Rg2 Qxg3+ 34.Rxg3 Kf8 35.Ne3 Nh5 36.Rg4 Rd2+ 37.Kg1 Bf3 38.Rd4 Re2 39.f6 Nxf6 1/2-1/2
2019.02.21 Aeroflot Open B 2019
2425749 Koustav, Chatterjee (2332) IM Belyakov, B (2464) 1-0
1.d4 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 O-O 5.Nc3 d6 6.Nf3 Nc6 7.O-O a6 8.b3 Rb8 9.d5 Na5 10.Bg5 c5 11.dxc6 Nxc6 12.Rc1 h6 13.Bd2 Be6 14.Ne1 Qd7 15.Nd5 Bh3 16.Nxf6+ exf6 17.Bxh3 Qxh3 18.Ng2 Rbd8 19.Nf4 Qf5 20.Nd5 Rfe8 21.Bc3 Ne5 22.f3 h5 23.e4 Qd7 24.Qc2 Qc6 25.Kg2 Rc8 26.Qd2 Re6 27.Rfe1 Nd7 28.Bd4 Rce8 29.Rcd1 Rc8 30.Be3 Bf8 31.Bd4 Bg7 32.Qa5 Ne5 33.Bb2 Qc5 34.Qxc5 dxc5 35.Nf4 Re7 36.Rd6 b5 37.Nd5 Rb7 38.Bxe5 fxe5 39.Rxa6 bxc4 40.Nb6 Rd8 41.Nxc4 Rbd7 42.Rc6 Ra7 43.Re2 Rda8 44.a4 Rb8 45.Rb6 Rd8 46.Rd2 Rd4 47.Rxd4 cxd4 48.Kf2 Rd7 49.Ke2 d3+ 50.Kd1 d2 51.Rd6 Rb7 52.Nxd2 Bh6 53.Kc2 Bxd2 54.Rxd2 Kf8 55.Kc3 Rc7+ 56.Kb2 Ke7 57.b4 f5 58.Kb3 Rc1 59.a5 Ra1 60.Ra2 1-0
2019.02.20 Aeroflot Open B 2019
2425693 GM Hamitevici, V (2490) Koustav, Chatterjee (2332) 0-1
1.Nf3 Nf6 2.g3 d5 3.Bg2 c5 4.c4 d4 5.b4 cxb4 6.a3 bxa3 7.O-O Nc6 8.Bxa3 g6 9.d3 Bg7 10.Nbd2 O-O 11.Nb3 Re8 12.Nfd2 Qc7 13.Bb2 e5 14.Ba3 b6 15.e3 dxe3 16.fxe3 Bb7 17.Ne4 Nxe4 18.Bxe4 Nd8 19.Nd2 f5 20.Bd5+ Ne6 21.e4 Bxd5 22.cxd5 Nd4 23.Bb2 Qc5 24.Kh1 Qb5 25.Bxd4 exd4 26.Qf3 fxe4 27.dxe4 Rf8 28.Qg4 d3 29.Rad1 Rxf1+ 30.Rxf1 Qb2 31.Nc4 Qe2 32.Rf3 Qd1+ 33.Kg2 Qc2+ 0-1
2019.01.16 17th Delhi Open 2019
2441895 Koustav, Chatterjee (2346) WGM Kurbonboeva, Sarvinoz (2214) 1/2-1/2
1.d4 Nf6 2.c4 g6 3.g3 c6 4.Bg2 d5 5.Qa4 Nbd7 6.cxd5 Nb6 7.Qb3 cxd5 8.Nc3 Bg7 9.Nf3 O-O 10.O-O Ne4 11.Bf4 Nxc3 12.Qxc3 Nc4 13.Rac1 Nb6 14.Ra1 Nc4 15.Rac1 Bf5 16.b3 Nd6 17.Qb4 a5 18.Qa3 Be4 19.Bxd6 Qxd6 20.Qxd6 exd6 21.e3 Rfc8 22.Ng5 Bxg2 23.Kxg2 Rc6 24.Rxc6 bxc6 25.Rc1 Rc8 26.h4 h5 27.Kf3 Bh6 28.Nh3 Kf8 29.g4 hxg4+ 30.Kxg4 Ke7 31.Ng1 Kd7 32.Ne2 c5 33.dxc5 dxc5 34.Nc3 Ke6 35.Na4 Bf8 36.Kf3 Be7 37.e4 dxe4+ 38.Kxe4 f5+ 39.Kf3 Rc6 40.Rc4 Ke5 41.Nb2 Kd5 42.Ra4 Bd8 43.Nc4 Re6 44.Ne3+ Kc6 45.h5 gxh5 46.Nxf5 Re8 47.Ng7 Re5 48.Re4 Rxe4 49.Kxe4 h4 50.f4 Kb5 51.Ne6 Be7 52.Nc7+ Kc6 53.Nd5 Bd8 54.Ne3 Kb5 55.f5 a4 56.Nd5 axb3 57.axb3 c4 58.bxc4+ Kxc4 59.Nf4 Bf6 60.Nh3 Kc5 1/2-1/2
2019.01.15 17th Delhi Open 2019
2441856 GM Aleksandrov, A (2582) Koustav, Chatterjee (2346) 1/2-1/2
1.c4 Nf6 2.Nc3 e6 3.e4 d5 4.e5 d4 5.exf6 dxc3 6.bxc3 Qxf6 7.Nf3 Nc6 8.Bd3 e5 9.O-O Bd6 10.Rb1 O-O 11.Re1 b6 12.Qc2 g6 13.Be4 Bf5 14.d4 exd4 15.Bg5 Bxe4 16.Rxe4 Qf5 17.Bh6 Rae8 18.Rbe1 Rxe4 19.Rxe4 Rd8 20.Re1 Rf8 21.Re4 Rd8 22.Qe2 d3 23.Qe3 Bf8 24.Bxf8 Rxf8 25.Qxd3 Rd8 26.Nd4 Qf6 27.h4 h5 28.Qe3 Nxd4 29.cxd4 Kg7 30.g3 c6 31.Re5 Qd6 32.d5 cxd5 33.cxd5 Rd7 34.a4 f6 35.Re8 Qxd5 36.Rc8 Qb7 37.Rc1 b5 38.axb5 Qxb5 39.Kh2 Qe5 40.Qf3 Qd5 1/2-1/2
2019.01.10 17th Delhi Open 2019
2443903 GM Erigaisi, Arjun (2548) Koustav, Chatterjee (2346) 1-0
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.c3 Bg5 12.Nc2 O-O 13.h4 Bh6 14.g4 g6 15.g5 Bg7 16.Qd2 f5 17.gxf6 Bxf6 18.Nxf6+ Qxf6 19.Ne3 Be6 20.h5 Rad8 21.hxg6 hxg6 22.Bh3 Ne7 23.a4 Bxh3 24.Rxh3 Qe6 25.Rg3 Rf4 26.axb5 axb5 27.f3 Kg7 28.Qg2 Rdf8 29.Ra7 R8f7 30.Rh3 Ng8 31.Ra8 Rf8 32.Ra7+ R8f7 33.Ra5 Qxh3 34.Qxh3 Rxf3 35.Nf5+ R7xf5 36.Ra7+ Kf8 37.Qh7 Rf1+ 1-0
2018.12.01 World Youth U16 Olympiad
2470234 Koustav, Chatterjee (2346) WFM Beydullayeva, Govhar (2202) 1-0
1.c4 e5 2.g3 Nf6 3.Bg2 d5 4.cxd5 Nxd5 5.Nc3 Nb6 6.Nf3 Nc6 7.O-O Be7 8.Rb1 a5 9.d3 O-O 10.Be3 Be6 11.Rc1 f5 12.Nd2 Qd7 13.Na4 Nxa4 14.Qxa4 Bd5 15.Qb5 Bxg2 16.Kxg2 f4 17.Qb3+ Kh8 18.Bc5 a4 19.Qc4 Bxc5 20.Qxc5 Rf6 21.Nf3 Rh6 22.h4 Rg8 23.Rh1 Re8 24.Rc4 b6 25.Qb5 Qe6 26.Ng5 Qd7 27.Rhc1 Ree6 28.Nxe6 1-0
2018.11.30 World Youth U16 Olympiad
2470146 Koustav, Chatterjee (2346) FM Murzin, Volodar (2340) 0-1
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 O-O 5.Nf3 d6 6.h3 e5 7.d5 Na6 8.Be3 Nc5 9.Nd2 a5 10.a3 Bd7 11.g4 a4 12.Be2 c6 13.g5 Ne8 14.h4 cxd5 15.cxd5 f5 16.h5 f4 17.Bxc5 dxc5 18.hxg6 hxg6 19.Bg4 Nd6 20.Be6+ Bxe6 21.dxe6 Qe7 22.Nd5 Qxe6 23.Nc7 Qf7 24.Nxa8 Rxa8 25.Rc1 c4 26.Qe2 b5 27.Rd1 Qb7 28.Rh2 Qc6 29.Kf1 Rf8 30.Qg4 Re8 31.Nf3 Nxe4 32.Rd7 Nd6 33.Qh3 Nf7 34.Ra7 Kf8 35.Qd7 Qxd7 36.Rxd7 Rd8 37.Rxd8+ Nxd8 38.Nd2 e4 39.Nxe4 Bxb2 40.f3 Bxa3 41.Rh8+ Ke7 42.Nc3 Bb2 43.Rh7+ Nf7 44.Nd5+ Kd6 45.Nb4 Nxg5 46.Rb7 Kc5 47.Na6+ Kc6 48.Rb8 Ba3 49.Ke2 Bd6 50.Rg8 Kb7 51.Rxg6 Nf7 52.Rf6 Kxa6 53.Rxf7 a3 54.Rf6 a2 55.Rxd6+ Ka5 0-1
2018.11.30 World Youth U16 Olympiad
2470051 IM Vokhidov, Shamsiddin (2456) Koustav, Chatterjee (2346) 1-0
1.e4 e6 2.d4 d5 3.Nd2 c5 4.Ngf3 cxd4 5.exd5 Qxd5 6.Bc4 Qd8 7.O-O a6 8.Nb3 Nc6 9.Nbxd4 Nxd4 10.Nxd4 Qc7 11.b3 Bd6 12.Nf3 Ne7 13.Bb2 O-O 14.Qd4 Nf5 15.Qg4 g6 16.Qh3 b5 17.Ng5 h6 18.g4 Bxh2+ 19.Qxh2 Qxh2+ 20.Kxh2 hxg5 21.Be2 Ng7 22.Bf6 Bb7 23.Rad1 Rfc8 24.Rd2 Ne8 25.Bxg5 Bd5 26.Bf4 f6 27.g5 Kf7 28.f3 fxg5 29.Bxg5 Nd6 30.Kg2 Rh8 31.Bf4 Nf5 32.Kf2 Kf6 33.c4 bxc4 34.bxc4 Bc6 35.Rg1 Rh5 36.Rb2 g5 37.Bb8 Rh8 38.Rgb1 Nd4 39.Bg3 Rh3 40.Re1 Nf5 41.Be5+ Kg6 42.Rb6 Rc8 43.Rg1 Nh4 44.Bg3 Nf5 45.Rxa6 g4 46.Bd3 Kg5 47.Bxf5 Kxf5 48.fxg4+ Kg6 49.Ke3 Rhh8 50.Bd6 Bb7 51.Ra7 Rh7 52.Rb1 Be4 53.Rb8 Rh3+ 54.Kd4 Rxb8 55.Bxb8 Bf3 56.c5 Rh4 57.Ke5 Rxg4 58.Kxe6 Rd4 59.Rg7+ Kh6 60.Rg3 Bd5+ 61.Ke5 Rd2 62.a3 Bc6 63.Bd6 Kh7 64.Ke6 Re2+ 65.Be5 Rd2 66.Rg7+ Kh6 67.Bf4+ 1-0
2018.11.28 World Youth U16 Olympiad
2469959 FM Gharibyan, Mamikon (2314) Koustav, Chatterjee (2346) 0-1
1.d4 Nf6 2.c4 e6 3.Nf3 d5 4.Nc3 dxc4 5.e4 b5 6.e5 Nd5 7.Nxb5 Nb6 8.Be2 Nc6 9.O-O Be7 10.Qd2 O-O 11.Qf4 Rb8 12.Qg3 Kh8 13.Rd1 Bb7 14.b3 cxb3 15.axb3 a6 16.Nc3 Nb4 17.Qg4 N6d5 18.Ne4 f5 19.exf6 gxf6 20.Qh3 Rg8 21.Bd2 Bc8 22.Ng3 Bd7 23.Nh4 Nc2 24.Bd3 e5 25.Nhf5 Nxa1 26.Rxa1 Nf4 27.Bxf4 exf4 28.Ne2 Rxb3 29.Nxf4 Rg5 30.Qh6 Bxf5 31.h4 Bf8 0-1
2018.11.26 World Youth U16 Olympiad
2469772 Koustav, Chatterjee (2346) Berdnyk, Mariia (2254) 1/2-1/2
1.d4 Nf6 2.c4 e6 3.Nf3 d5 4.Nc3 Be7 5.Bf4 O-O 6.e3 a6 7.cxd5 exd5 8.Bd3 c5 9.dxc5 Bxc5 10.O-O Nc6 11.Rc1 Ba7 12.Bg5 Be6 13.a3 h6 14.Bh4 Rc8 15.Na4 g5 16.Bg3 Ne4 17.Ne5 Nxg3 18.Nxc6 Rxc6 19.hxg3 Rxc1 20.Qxc1 Qe7 21.Bb1 d4 22.Qc2 f5 23.exd4 Bxd4 24.Re1 Qd6 25.Qe2 Bb3 26.Bc2 Qxg3 27.Bxb3+ Qxb3 28.Nc3 Qf7 29.Qf3 Bxc3 30.bxc3 Rd8 31.Re5 f4 32.Qe2 Kf8 33.c4 Re8 34.c5 Re7 35.Qe4 Rxe5 36.Qxe5 Kg8 37.Qd6 Kg7 38.c6 bxc6 39.Qxc6 Qf6 40.Qd7+ Kg6 41.Qd3+ Kf7 42.Qd7+ Qe7 43.Qd5+ Qe6 44.Qb7+ Kf6 45.Qb2+ Kf5 46.Qc2+ Kf6 47.Qc3+ Ke7 48.Qc7+ Qd7 49.Qc5+ Qd6 50.Qc3 Kd7 51.a4 Qd1+ 52.Kh2 Qxa4 53.Qg7+ Kc8 54.Qxh6 Qb5 55.Qf8+ Kc7 56.Qe7+ Kc8 57.Qf8+ Kd7 58.Qf7+ Kd6 59.Qf6+ Kc7 60.Qe7+ Kb6 61.Qd8+ Kc6 62.Qf6+ 1/2-1/2
2018.11.26 World Youth U16 Olympiad
2474402 Kara, Yanki (2212) Koustav, Chatterjee (2346) 1/2-1/2
1.Nf3 c5 2.c4 Nc6 3.Nc3 g6 4.e3 Nf6 5.d4 cxd4 6.exd4 d5 7.cxd5 Nxd5 8.Qb3 e6 9.Bg5 Be7 10.Bxe7 Ncxe7 11.Bb5+ Kf8 12.O-O Kg7 13.Rfe1 a6 14.Bc4 Nf6 15.Rad1 b5 16.Bf1 Bb7 17.Ne5 Ned5 18.Na4 Re8 19.Nc5 Rb8 20.Be2 Qd6 21.Bf3 Ba8 22.Qc2 Nb4 23.Qb3 Bxf3 24.Qxf3 Nbd5 25.Rc1 Re7 26.g3 Rc8 27.Qa3 Rec7 28.Rcd1 Ne7 29.Qxa6 Qxa6 30.Nxa6 Ra7 31.Nb4 Nfd5 32.Nxd5 Nxd5 33.a3 b4 34.axb4 Nxb4 35.Re3 Nd5 36.Ra3 Rb7 37.Rda1 Rxb2 38.Ra7 Rc7 39.Rxc7 Nxc7 40.Ra7 Rc2 41.Rb7 Kf8 42.Rb8+ Kg7 43.Rb7 Kf8 44.Rb8+ Ne8 45.Rb7 Rc7 46.Rb5 Nd6 47.Ra5 Nf5 48.d5 1/2-1/2
2018.11.25 World Youth U16 Olympiad
2474297 Koustav, Chatterjee (2346) FM Amon, Nejc (2257) 1-0
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Ne2 d5 6.a3 Bd6 7.Ng3 b6 8.cxd5 exd5 9.Be2 c6 10.O-O Re8 11.b4 Bb7 12.Qb3 Nbd7 13.a4 a5 14.bxa5 Rxa5 15.Nf5 Bf8 16.Ba3 c5 17.dxc5 Nxc5 18.Qc2 Nfe4 19.Bb5 Re5 20.Nd4 Rh5 21.Nce2 Bd6 22.f4 Ba6 23.h3 Bxb5 24.axb5 Qd7 25.Nc6 Ra8 26.Bxc5 Rxa1 27.Rxa1 Nxc5 28.Ra8+ Bf8 29.Ned4 g6 30.Qa2 Qc7 31.Kh2 Nd7 32.g4 Rh6 33.Qxd5 Nf6 34.Qf3 Nd7 35.g5 Rh5 36.Qd5 Nf6 37.gxf6 1-0
2018.10.30 World Youth Open U16 2018
2480751 Koustav, Chatterjee (2344) FM Gavrilescu, David (2481) 0-1
1.Nf3 d5 2.e3 Nf6 3.c4 e6 4.Nc3 Be7 5.b3 O-O 6.Bb2 dxc4 7.bxc4 c5 8.Be2 Nc6 9.O-O b6 10.a3 Bb7 11.Qc2 Rc8 12.Rad1 Qc7 13.d3 Rfd8 14.Nd2 Qb8 15.f4 Ne8 16.Kh1 Nd6 17.Bg4 Bf8 18.Nce4 Nf5 19.Bxf5 exf5 20.Ng3 Ne7 21.Be5 Qa8 22.Nf3 f6 23.Bc3 Rc7 24.Nh4 Qc8 25.a4 Qe6 26.Rfe1 Rcd7 27.Bb2 Nc6 28.d4 cxd4 29.exd4 Nxd4 30.Qc1 Qc6 31.Rd3 Qxa4 32.Qd1 Nc2 33.Ree3 Rxd3 34.Rxd3 Rxd3 35.Qxd3 Qb4 0-1
2018.10.29 World Youth Open U16 2018
2480720 IM Vrolijk, Liam (2437) Koustav, Chatterjee (2344) 1/2-1/2
1.d4 Nf6 2.c4 e6 3.Nf3 d5 4.g3 Be7 5.Bg2 O-O 6.O-O c6 7.b3 Nbd7 8.Bb2 b6 9.Qc2 Bb7 10.Nc3 c5 11.cxd5 Nxd5 12.Nxd5 Bxd5 13.e4 Bb7 14.Rfd1 cxd4 15.Nxd4 Rc8 16.Qe2 Bc5 17.a3 Qe7 18.b4 Bxd4 19.Bxd4 e5 20.Be3 Qe6 21.Qf1 Qe7 22.Bh3 Rc7 23.Qd3 Nf6 24.f3 Bc8 25.Bf1 Be6 26.Rac1 Rfc8 27.Rxc7 Qxc7 28.a4 h6 29.Rc1 Qb7 30.Rxc8+ Qxc8 31.a5 Nd7 32.f4 exf4 33.gxf4 Qc7 34.a6 f6 35.Be2 Nf8 36.Qd2 Bf7 37.Kf2 g5 38.e5 gxf4 39.Bxf4 Ng6 40.Bg3 fxe5 41.Qxh6 Qc2 42.Qh3 Qe4 43.Qg4 Qxg4 44.Bxg4 Kg7 45.Ke3 Bc4 46.Bc8 Kf6 47.Ke4 Ba2 48.Bf2 Bb1+ 49.Kf3 e4+ 50.Kg4 Ne5+ 51.Kg3 Nc4 52.Bd4+ Ke7 53.Kf4 Bd3 54.Bb7 Kd7 55.h4 Kc7 56.Bxe4 Be2 57.b5 Na3 58.Ke3 Bh5 59.Be5+ Kc8 60.Bb7+ Kd8 61.Bc6 Nc2+ 62.Kf4 Nb4 63.Bg2 Be2 64.Bc3 Na2 65.Bf6+ Ke8 66.Bc6+ Kf7 67.Kg5 Nb4 68.Bd7 Nd5 69.Bd4 Nc7 70.h5 Bxb5 71.h6 Bd3 72.Be5 Ne6+ 73.Kg4 Nf8 74.Bc8 Kg6 75.Bb8 Bb5 76.Bxa7 Nd7 77.Kh4 Nc5 78.Bxb6 Bxa6 79.Bf5+ Kxh6 80.Bxc5 Kg7 81.Kg5 Kf7 82.Kf4 Bc4 83.Bg4 Kg6 84.Be7 Bd3 85.Ke5 Bc2 86.Bd7 Kf7 87.Bf6 Bb3 88.Bg4 Kg6 89.Bh4 Bc2 90.Be1 Kf7 1/2-1/2
2018.10.28 World Youth Open U16 2018
2484118 Koustav, Chatterjee (2344) Sargsyan, Tigran R. (2218) 1/2-1/2
1.d4 d5 2.c4 c6 3.Nc3 Nf6 4.e3 a6 5.Nf3 Bf5 6.Qb3 b5 7.cxd5 cxd5 8.Nh4 Bc8 9.a4 b4 10.Qxb4 e5 11.Qb3 exd4 12.exd4 Nc6 13.Qd1 Ne4 14.Nf3 Bb4 15.Bd2 Nxd2 16.Qxd2 O-O 17.Be2 Qf6 18.O-O Be6 19.Rad1 h6 20.Rfe1 Bd6 21.Bd3 Rfe8 22.Qe2 Re7 23.Bb1 Nb4 24.Ne5 Rae8 25.g3 Bf5 26.f4 Bxb1 27.Rxb1 Qf5 28.Qd2 f6 29.Nf3 g5 30.Rxe7 Rxe7 31.Re1 Rg7 32.Qe2 gxf4 33.Nh4 Qh3 34.Qe6+ Qxe6 35.Rxe6 Bc7 36.Nf5 Rg5 37.g4 Rxg4+ 38.Kf2 Rg5 39.Re8+ Kf7 40.Re7+ Kf8 41.Rxc7 Rxf5 42.Kf3 Nc2 43.Ne2 Ne1+ 44.Kg4 Rg5+ 45.Kxf4 Nd3+ 46.Kf3 Nxb2 47.Nf4 Rf5 48.Kg4 Rg5+ 49.Kf3 Rf5 50.Rc3 Nc4 51.h4 h5 52.Rc2 Kf7 53.Rg2 Ne5+ 54.Ke3 Nc4+ 55.Kf3 Ne5+ 56.Ke3 Nc4+ 1/2-1/2
2018.10.27 World Youth Open U16 2018
2484085 Peng, Hongchi (2273) Koustav, Chatterjee (2344) 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.Kb1 Nxd4 12.Bxd4 b5 13.Bxc5 Nxc5 14.Qd4 Qb6 15.Ne2 b4 16.Nc1 Rb8 17.Bd3 a5 18.Nb3 Nxb3 19.Qxb6 Nd2+ 20.Rxd2 Rxb6 21.Rc1 Bb7 22.c3 b3 23.axb3 Rxb3 24.Kc2 Rb6 25.Ra1 Ra8 26.Kc1 d4 27.cxd4 Rb4 28.f5 g6 29.fxe6 fxe6 30.Bc2 a4 31.Ra3 Bd5 32.Kb1 Bc6 33.Rc3 Bd5 34.Ka1 Rf8 35.Bd1 Rf1 36.Rc1 Rc4 37.Rxc4 Bxc4 38.b4 Bb3 39.d5 Rxd1+ 40.Rxd1 Bxd1 41.d6 Kf8 42.b5 Be2 43.b6 Ba6 44.Kb2 Bb7 45.g4 Ke8 46.Ka3 Bc6 47.h4 Kd7 48.b7 Bxb7 49.Kxa4 Kc6 50.Kb4 Kb6 51.Kc4 Bc6 52.Kd4 Kb5 53.Ke3 Kc5 54.Kf4 h6 0-1
2018.10.26 World Youth Open U16 2018
2484056 Koustav, Chatterjee (2344) Kamer, Kayra (2290) 1-0
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Be2 O-O 6.Be3 c5 7.d5 e6 8.Nf3 exd5 9.cxd5 Re8 10.Nd2 Na6 11.O-O Nc7 12.a4 b6 13.Bg5 a6 14.f4 Qd7 15.Nc4 Nxe4 16.Nxb6 Qf5 17.Nxe4 Qxe4 18.Nxa8 Nxa8 19.Bf3 Qd4+ 20.Kh1 Bf5 21.Re1 Rxe1+ 22.Qxe1 h6 23.Qe8+ Kh7 24.Be7 Qxb2 25.Rg1 Nb6 26.Bxd6 Nd7 27.Qe2 Qd4 28.Rd1 Qxa4 29.Be5 Nxe5 30.fxe5 c4 31.e6 fxe6 32.dxe6 Qe8 33.e7 Bf6 34.Re1 Bd7 35.Qxc4 Bb5 36.Qe6 Kg7 37.Bd5 a5 38.Ba2 a4 39.Re3 h5 40.Rf3 Qc6 41.e8=N+ Kh6 42.Qxc6 Bxc6 43.Rxf6 1-0
2018.10.24 World Youth Open U16 2018
2484030 Lou, Vincent (2155) Koustav, Chatterjee (2344) 0-1
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5 7.O-O Nbd7 8.Re1 c6 9.Bf1 Qc7 10.Qc2 Re8 11.d5 a5 12.Rb1 Nc5 13.Nd2 Bd7 14.b3 Reb8 15.a3 cxd5 16.Nxd5 Nxd5 17.cxd5 Rc8 18.b4 axb4 19.axb4 Na4 20.Qxc7 Rxc7 21.Nc4 Bf8 22.Ra1 Rac8 23.Na5 Nc3 24.Be3 Ra8 25.Rac1 Rcc8 26.Bd2 Nb5 27.Nxb7 Nd4 28.Rxc8 Rxc8 29.Rc1 Nb3 30.Rxc8 Bxc8 31.Nxd6 Bxd6 32.Bc3 Nd4 33.Bd3 Bd7 34.f3 Kf8 35.Kf2 Ke7 36.g3 Kd8 37.f4 f6 38.Ke3 Nb5 39.Bd2 Kc7 40.h4 Kb6 41.Be1 Na3 42.Bc3 Bb5 43.Ba1 Bxd3 44.Kxd3 Kb5 45.Bc3 Nc4 46.fxe5 Nxe5+ 47.Ke3 Bxb4 48.Bxb4 Kxb4 49.Kf4 h5 50.d6 Kc5 51.d7 Nxd7 52.g4 hxg4 53.Kxg4 Ne5+ 0-1
2018.10.23 World Youth Open U16 2018
2483992 Koustav, Chatterjee (2344) FM Beukes, Dante M (2155) 1/2-1/2
1.Nf3 Nf6 2.b3 g6 3.Bb2 Bg7 4.g3 O-O 5.Bg2 c5 6.c4 Nc6 7.O-O d6 8.d4 Rb8 9.Nc3 Bf5 10.dxc5 dxc5 11.Qc1 Qc8 12.Nd5 Bh3 13.Rd1 Bxg2 14.Kxg2 Rd8 15.Bxf6 Bxf6 16.Nxf6+ exf6 17.Rd5 Nb4 18.Rxd8+ Qxd8 19.h4 Qe7 20.Qc3 Rd8 21.h5 Nc6 22.Rh1 Nd4 23.Nxd4 Rxd4 24.Qf3 f5 25.e3 Rd2 26.Rd1 Rxd1 27.Qxd1 Qe4+ 28.Qf3 gxh5 29.Qxe4 fxe4 30.f3 exf3+ 31.Kxf3 Kg7 32.a3 a5 33.Ke4 Kf6 34.Kd5 Kf5 35.Kxc5 Kg4 36.Kb6 Kxg3 37.Kxb7 h4 38.c5 h3 39.c6 h2 40.c7 h1=Q+ 41.Kb8 Qc6 42.c8=Q Qxc8+ 43.Kxc8 h5 44.b4 axb4 45.axb4 h4 46.b5 h3 47.b6 h2 48.b7 h1=Q 49.b8=Q+ Kf2 1/2-1/2
2018.10.22 World Youth Open U16 2018
2483947 FM Loiacono, Leonardo (2277) Koustav, Chatterjee (2344) 1-0
1.d4 Nf6 2.c4 e6 3.Nc3 d5 4.cxd5 exd5 5.Bg5 Be7 6.e3 c6 7.Qc2 O-O 8.Bd3 Nbd7 9.Nf3 Re8 10.O-O Nf8 11.h3 g6 12.Bf4 Ne6 13.Be5 Ng7 14.Qb3 Nd7 15.Bh2 Nb6 16.Rfc1 a5 17.Na4 Nxa4 18.Qxa4 Qb6 19.Qb3 Qb4 20.Bf1 Nh5 21.Ne1 a4 22.Qxb4 Bxb4 23.Nd3 Bf8 24.Be5 Be7 25.Be2 Ng7 26.Bg4 Bxg4 27.hxg4 f6 28.Bh2 Ra5 29.Rc2 Bf8 30.Re1 Rb5 31.f3 Ne6 32.Kf2 c5 33.dxc5 Nxc5 34.Rd1 Nxd3+ 35.Rxd3 Re6 36.b3 axb3 37.axb3 Rc6 38.Rcd2 Rcb6 39.Bc7 Rc6 40.Bf4 g5 41.Bg3 Rcc5 42.Bb8 Kf7 43.Ra2 Rc1 44.Rb2 Bb4 45.Ke2 d4 46.exd4 Ra5 47.Rd1 Rxd1 48.Kxd1 Ra1+ 49.Ke2 Ke6 50.Rc2 Kd5 51.Rc7 Ra2+ 52.Kd3 Rd2+ 53.Ke3 Rb2 54.Rd7+ Kc6 55.Rxh7 Kd5 56.Rd7+ Kc6 57.Rd8 Ba5 58.Rd6+ Kb5 59.Rxf6 Rxb3+ 60.Ke4 Bc3 61.Ba7 Ba5 62.g3 Ka4 63.d5 Rb1 64.f4 Re1+ 65.Kf5 Rd1 66.Ke6 b5 67.Bc5 Rc1 68.Bd6 b4 69.Bxb4 Bxb4 70.Rf5 Re1+ 71.Kf7 Re7+ 72.Kf6 Re3 73.Kxg5 Rxg3 74.Re5 Kb5 75.f5 Bd2+ 76.Kh5 Rh3+ 77.Kg6 Rh4 78.Re4 Kc5 79.f6 Kxd5 80.Ra4 Ke6 81.f7 Bh6 82.Ra6+ Ke7 83.Ra7+ Ke6 84.g5 Bf8 85.Ra6+ Ke5 86.Ra8 Bd6 87.Re8+ Kf4 88.f8=Q+ Bxf8 89.Rxf8+ Ke5 90.Re8+ Kd6 91.Kf6 Rf4+ 92.Kg7 1-0
2018.10.21 World Youth Open U16 2018
2488099 Juksta, Karolis (2234) Koustav, Chatterjee (2344) 0-1
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 b6 5.Ne2 c5 6.a3 Ba5 7.Rb1 Qe7 8.d5 exd5 9.cxd5 O-O 10.Nf4 Bb7 11.Bd3 Bxc3+ 12.bxc3 Nxd5 13.Nxd5 Bxd5 14.Bxh7+ Kxh7 15.Qxd5 Nc6 16.O-O Qe6 17.Rd1 Ne5 18.e4 c4 19.Rd4 Rfe8 20.Be3 Qg6 21.Kh1 Rac8 22.h3 Rc5 23.Qb7 Ra5 24.f4 Nc6 25.f5 Qg3 26.Qxd7 Nxd4 27.Qxe8 Nf3 28.gxf3 Qxf3+ 29.Kh2 Qe2+ 30.Kh1 Qxe3 31.Rf1 Qxh3+ 32.Kg1 Qg3+ 33.Kh1 Rxa3 34.Qxf7 Qh3+ 35.Kg1 Qg4+ 36.Kf2 Ra2+ 37.Ke3 Re2+ 0-1
2018.10.21 World Youth Open U16 2018
2488118 Koustav, Chatterjee (2344) IM Sargsyan, Shant (2463) 0-1
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Bd2 d5 6.Nf3 b6 7.cxd5 exd5 8.Bd3 c5 9.dxc5 bxc5 10.a3 Ba5 11.Na4 Bb6 12.b4 c4 13.Be2 Ne4 14.Nc3 Nc6 15.O-O Be6 16.Be1 f5 17.Qa4 Qe8 18.b5 Ne7 19.Qb4 Ng6 20.Rd1 Rd8 21.a4 Kh8 22.Nd4 Bc5 23.Qb2 Bg8 24.Nc6 Rd7 25.Bh5 f4 26.exf4 d4 27.Nxe4 Qxe4 28.Bxg6 hxg6 29.Bb4 c3 30.Qa3 Bxb4 31.Qxb4 Rxf4 32.Rfe1 c2 33.Rc1 d3 34.Qd2 Qf5 35.Ne5 Rd8 36.f3 Rxa4 37.Re3 Rad4 38.Nc6 Qxb5 39.Nxd8 Rxd8 40.Kf2 Qc5 41.h4 a5 42.g4 Qb4 43.Ke1 Qf4 44.h5 gxh5 45.gxh5 Qh4+ 46.Kf1 Qh1+ 0-1
2018.10.20 World Youth Open U16 2018
2488071 Koustav, Chatterjee (2344) Pena Cifuentes, Tomas Alberto (1952) 1-0
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 Bg4 10.dxc5 Bxc5 11.Nc3 a6 12.h3 Bh5 13.Rc1 Ba7 14.Nh4 Bxe2 15.Nxe2 Re8 16.Nf5 Ne5 17.Qc2 Ne4 18.Rfd1 Qg5 19.Nfd4 Qh4 20.Nf4 Rad8 21.Nf5 Qg5 22.Nxd5 Nf3+ 23.Kh1 Bc5 24.Nde7+ Bxe7 25.Qxe4 Nd2 26.Nxe7+ Rxe7 27.Qc2 Red7 28.Bd4 Nf3 29.gxf3 Qh5 30.Kh2 Qxf3 31.Rg1 f5 32.Rg3 Qh5 33.Qc4+ Kh8 34.Rcg1 1-0
2018.08.15 25th Abu Dhabi Masters
2520223 GM Lalith, B (2520) Koustav, Chatterjee (2325) 1-0
1.d4 Nf6 2.Nf3 d5 3.c4 e6 4.g3 Be7 5.Bg2 O-O 6.O-O dxc4 7.Ne5 Nc6 8.Nxc6 bxc6 9.Na3 Bxa3 10.bxa3 Rb8 11.Qa4 Rb6 12.Bd2 Nd5 13.e4 Rb2 14.Be1 Nb6 15.Qd1 c5 16.Bc3 Rb5 17.a4 cxd4 18.axb5 dxc3 19.Qc2 Qd3 20.Rfc1 Rd8 21.Rd1 1-0
2018.08.14 25th Abu Dhabi Masters
2520145 Koustav, Chatterjee (2325) IM Mammadzada, G (2426) 1/2-1/2
1.Nf3 c5 2.c4 Nc6 3.Nc3 e5 4.g3 g6 5.Bg2 Bg7 6.O-O d6 7.d3 Nge7 8.Rb1 O-O 9.Bd2 h6 10.a3 a5 11.Ne1 Be6 12.Nc2 d5 13.cxd5 Nxd5 14.Ne3 Nb6 15.Ne4 Qe7 16.Rc1 Nd7 17.Nc4 b5 18.Ne3 Rfc8 19.Nc3 Rab8 20.f4 f5 21.fxe5 Ndxe5 22.h4 Rf8 23.Ncd5 Qd6 24.Nf4 Bf7 25.h5 Nd4 26.hxg6 Nxg6 27.Nh5 Bb3 28.Qe1 Rbe8 29.Kh1 a4 30.Qf2 Be5 31.Nf4 Nxf4 32.gxf4 Bf6 33.Rg1 Kh7 34.Bh3 Be6 35.Rcf1 Rg8 36.Kh2 Bd7 37.Rxg8 Rxg8 38.Rg1 Rxg1 39.Kxg1 Qxf4 40.Nd5 Qxf2+ 41.Kxf2 Bg7 42.Bc3 Kg6 43.Nf4+ Kf7 44.Bg2 Bf6 45.Bd5+ Ne6 46.Bxf6 Kxf6 47.Nxe6 Bxe6 48.Bc6 h5 49.Bxb5 Bb3 50.Kg3 Kg5 51.e3 h4+ 52.Kh3 Bd1 53.Bc6 Be2 54.Bxa4 Bf1+ 55.Kh2 Bxd3 56.Bc6 f4 57.exf4+ Kxf4 58.a4 Ke5 59.Kh3 Kd6 60.Be8 c4 61.Kxh4 Kc5 62.a5 Be4 63.Kg5 Bb7 64.Kf4 Kb4 65.Bf7 Ba6 66.Bxc4 1/2-1/2
2018.08.13 25th Abu Dhabi Masters
2524395 Koustav, Chatterjee (2325) IM Ikeda, J (2419) 1-0
1.d4 f5 2.c4 Nf6 3.Nc3 d6 4.Bg5 Nbd7 5.Qc2 g6 6.h4 Bg7 7.Nh3 Nf8 8.O-O-O Ne6 9.d5 Nxg5 10.hxg5 Ng4 11.e3 O-O 12.Be2 c6 13.c5 cxd5 14.Rxd5 Be6 15.Nf4 Bf7 16.Rxf5 Ne5 17.Rxf7 Rxf7 18.Ne6 Qc8 19.Nxg7 Kxg7 20.f4 Qxc5 21.fxe5 Qxe5 22.Bf3 Qxg5 23.Qd2 Rb8 24.Qd4+ Qf6 25.Qxa7 Rc8 26.Qxb7 Rc5 27.Qb4 Rf8 28.Qd4 Re5 29.Qh4 Qxh4 30.Rxh4 Rxe3 31.a4 e6 32.a5 d5 33.Ra4 Re5 34.a6 Ref5 35.b4 d4 36.Nd1 1-0
2018.08.12 25th Abu Dhabi Masters
2524334 FM Gajwa, A (2223) Koustav, Chatterjee (2325) 0-1
1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.Nf3 g6 5.Be2 Bg7 6.exd6 cxd6 7.O-O O-O 8.h3 Nc6 9.c4 Nb6 10.Nc3 Bf5 11.Be3 d5 12.c5 Nc4 13.Bc1 b6 14.cxb6 axb6 15.g4 Bc8 16.b3 Nd6 17.Bf4 Bb7 18.Nb5 Ne4 19.a4 Qd7 20.Rc1 Rac8 21.Ne5 Nxe5 22.dxe5 f6 23.Rxc8 Qxc8 24.Qd4 Nc5 25.Bf3 Qd8 26.Bg2 Ne6 27.Qd2 fxe5 28.Bg3 Nf4 29.Bxf4 exf4 30.Bf3 e6 31.Rc1 h5 32.Qd3 Qg5 33.h4 Qf6 34.Rc7 hxg4 35.Bxg4 Ba8 36.Rd7 f3 37.Nd4 Qxd4 38.Qxg6 Qf6 39.Bxe6+ Kh8 40.Qh5+ Qh6 41.Qxh6+ Bxh6 42.Bxd5 Bxd5 43.Rxd5 Rg8+ 44.Kh2 Rg2+ 45.Kh3 Rxf2 46.Rf5 Be3 47.Kg4 Rb2 48.Rxf3 Rxb3 49.Kf5 Ra3 50.Ke6 Bc5 51.Rf4 Rb3 52.Rf5 Re3+ 53.Kd5 Bb4 54.Kc6 Ba5 55.Rf4 Re5 56.Kd6 Rc5 57.Ke6 Kg7 58.Rg4+ Kh6 59.Kf6 Kh5 60.Re4 Rc3 61.Ke6 Rb3 62.Kd6 Rb4 63.Rxb4 Bxb4+ 64.Kc6 Ba5 0-1
2018.08.11 25th Abu Dhabi Masters
2524257 Koustav, Chatterjee (2325) Priyanka, K (2106) 1/2-1/2
1.Nf3 Nf6 2.b3 e6 3.Bb2 d5 4.g3 b6 5.Bg2 Bb7 6.O-O Be7 7.c4 dxc4 8.bxc4 O-O 9.d3 c5 10.Nbd2 Nc6 11.a3 Qc7 12.Qc2 Rfd8 13.Nb3 Rac8 14.Rad1 Nd7 15.Nbd2 Bf6 16.Ne4 Bxb2 17.Qxb2 Nce5 18.Nfd2 Ng4 19.a4 Ngf6 20.Ra1 Nxe4 21.Nxe4 Rb8 22.a5 Bc6 23.axb6 axb6 24.Ra6 Ra8 25.Rfa1 Rxa6 26.Rxa6 Rb8 27.Qa1 Kf8 28.f4 f6 29.h4 Ke7 30.h5 h6 31.e3 Qb7 32.Nxc5 Nxc5 33.Ra7 Bxg2 34.e4 Bh3 35.d4 Nd7 36.Qa3+ Kf7 37.Rxb7 Rxb7 38.Qf3 Rc7 39.Kh2 Rxc4 40.Kxh3 Rxd4 41.Qe3 e5 42.Qb3+ Kf8 43.Qe6 Nc5 44.Qxb6 Nxe4 45.Kg4 Nd6 46.Qb8+ Kf7 47.Kf3 Rd3+ 48.Ke2 Rd4 49.Ke3 Nf5+ 50.Kf3 Nd6 51.Qb3+ Kf8 52.Qe6 Ne8 53.Ke3 Rd6 54.Qf5 exf4+ 55.gxf4 Ke7 56.Qc5 Kf7 57.Qa7+ Kf8 58.Ke4 f5+ 59.Kxf5 Rf6+ 60.Ke5 Nd6 61.Qa3 Kf7 62.Qb3+ Kf8 63.Qg3 Kf7 64.Qh4 Nc4+ 65.Kd5 Nd6 66.Qg4 Ne8 67.Qd7+ Kf8 68.Ke5 Rd6 69.Ke4 1/2-1/2
2018.08.11 25th Abu Dhabi Masters
2524157 GM Puranik, A (2514) Koustav, Chatterjee (2325) 1-0
1.e4 c6 2.Nf3 d5 3.Nc3 Nf6 4.e5 Ne4 5.Ne2 Qb6 6.d4 e6 7.Ng3 c5 8.c3 Nc6 9.Bd3 Nxg3 10.hxg3 h6 11.dxc5 Bxc5 12.Qe2 a5 13.g4 Bd7 14.g5 O-O-O 15.gxh6 gxh6 16.Bf4 d4 17.Be4 a4 18.O-O dxc3 19.bxc3 Qc7 20.Rab1 Na5 21.Nd4 Bxd4 22.cxd4 Bc6 23.Rb4 f5 24.Bxc6 Nxc6 25.Rxa4 Kb8 26.Qd3 Rd5 27.Qa3 Qg7 28.Rc1 Rg8 29.g3 Kc7 30.Rb4 Rb8 31.Qa7 Qd7 32.Rb6 Qe8 1-0
2018.08.09 25th Abu Dhabi Masters
2524101 Koustav, Chatterjee (2325) Samant, Aditya S (2217) 1-0
1.c4 e5 2.g3 Nf6 3.Bg2 d5 4.cxd5 Nxd5 5.Nc3 Nb6 6.Nf3 Nc6 7.O-O Be7 8.Rb1 a5 9.d3 Be6 10.Be3 O-O 11.Rc1 Nd5 12.Nxd5 Bxd5 13.Qa4 f6 14.a3 Qd7 15.Rc3 Rfd8 16.Rfc1 f5 17.Bc5 Bf6 18.e4 fxe4 19.dxe4 Be6 20.Be3 h6 21.Qb5 Rab8 22.Kh1 Qf7 23.h3 Kh8 24.Kh2 Bd7 25.Qf1 Be6 26.Ne1 Be7 27.Nd3 Bd6 28.f4 a4 29.f5 Bb3 30.Nc5 Nd4 31.Bxd4 exd4 32.Rf3 Be5 33.Nd3 Re8 34.Qf2 Rbd8 35.h4 Bc4 36.Nf4 Bxf4 37.Rxf4 d3 38.Qd2 b5 39.Rg4 Rd6 40.Rf1 Rf6 41.Rgf4 Qe7 42.Kh3 Qe5 43.g4 Kh7 44.g5 Rff8 45.Rg4 hxg5 46.hxg5 g6 47.Rh4+ Kg7 48.f6+ Kg8 49.Bf3 Kf7 50.Rh7+ Ke6 51.Qb4 Qd6 52.Bg4+ Ke5 53.Qc3+ Qd4 54.Qd2 Qb6 55.Qf4+ Kd4 56.Rd7+ Kc5 57.Rxc7+ 1-0
2018.08.08 25th Abu Dhabi Masters
2524003 GM Petrosian, TL (2610) Koustav, Chatterjee (2325) 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.Re1 b5 9.e5 Nd7 10.Nf1 Bb7 11.h4 Qc7 12.Bf4 Rfc8 13.N1h2 Qd8 14.h5 h6 15.Qd2 a5 16.g4 a4 17.a3 b4 18.c3 bxc3 19.bxc3 Na5 20.Qc2 Ba6 21.Rad1 c4 22.d4 Nf8 23.Kh1 Nh7 24.Rg1 Rcb8 25.Bh3 Ng5 26.Nxg5 hxg5 27.Bc1 Nb3 28.Be3 Bxa3 29.f4 Be7 30.Nf3 Bb5 31.fxg5 Be8 32.g6 fxg6 33.g5 Ra6 34.hxg6 a3 35.Nh4 Nxd4 36.Rxd4 a2 37.Qe2 a1=Q 38.Qh5 Bxg6 39.Nxg6 Qb1 40.Rf4 Qe4+ 41.Rxe4 dxe4 42.Rf1 1-0
2018.08.07 25th Abu Dhabi Masters
2523895 Koustav, Chatterjee (2325) GM Sjugirov, S (2677) 1/2-1/2
1.Nf3 b6 2.c4 Bb7 3.Nc3 e6 4.d4 Bb4 5.e3 Nf6 6.Bd2 O-O 7.Bd3 d5 8.cxd5 exd5 9.O-O Bd6 10.Rc1 a6 11.a3 Nbd7 12.Ne2 Ne4 13.Be1 Re8 14.b4 Qe7 15.Qb3 g6 16.a4 Ndf6 17.Bb1 Rab8 18.Nf4 c6 19.Nd3 Nd7 20.Qa2 Bc7 21.a5 b5 22.Nc5 Nexc5 23.dxc5 Ne5 24.Nd4 Rbd8 25.h3 Bb8 26.Bc3 Qc7 27.Rfe1 Nc4 28.Nf3 Re6 29.Rcd1 Rde8 30.Qa1 Bc8 31.Bd4 Qe7 32.Bc3 Qc7 33.Bd4 f6 34.Bxf6 Rf8 35.Bd4 Re7 36.e4 Rxf3 37.gxf3 Qh2+ 38.Kf1 Qf4 39.Qc3 Bxh3+ 40.Ke2 Bg2 41.Ba2 Rf7 42.exd5 cxd5 43.Rd3 Kf8 1/2-1/2
2018.07.03 ch-Commonwealth 2018
2556501 Alahakoon, I (2132) Koustav, Chatterjee (2365) 1-0
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qc2 O-O 5.Nf3 c5 6.dxc5 Na6 7.g3 Nxc5 8.Bg2 Nce4 9.O-O Nxc3 10.bxc3 Be7 11.e4 d6 12.e5 dxe5 13.Nxe5 Qc7 14.Qe2 Bd6 15.Re1 Bd7 16.Bg5 Bxe5 17.Qxe5 Qxe5 18.Rxe5 Rac8 19.Bxb7 Rxc4 20.Ra5 Rxc3 21.Rxa7 Bc6 22.a4 Nd5 23.a5 h6 24.Bd2 Rc2 25.Bxc6 Rxc6 26.a6 g5 27.Rb7 Ra8 28.a7 Rcc8 29.Rc1 Kh7 30.Ra1 Kg8 31.Rc1 Rf8 32.Ra1 Rfc8 33.Rc1 Rf8 34.Rc6 Rfe8 35.Rd6 Re7 36.Rb8+ Re8 37.Rxe8+ Rxe8 38.Ba5 Ra8 39.Bd2 Re8 40.Ba5 Ra8 41.Bd2 Re8 42.Ba5 1-0
2018.07.02 ch-Commonwealth 2018
2559666 Koustav, Chatterjee (2365) GM Deepan, C (2531) 0-1
1.c4 c6 2.Nf3 d5 3.g3 g6 4.Bg2 Bg7 5.Qa4 dxc4 6.Qxc4 e5 7.d3 Ne7 8.O-O h6 9.Qc2 O-O 10.Nc3 Be6 11.Bd2 a5 12.a3 Na6 13.Rab1 Nf5 14.b4 axb4 15.axb4 Nd4 16.Nxd4 exd4 17.Ne4 Nc7 18.Nc5 Bc8 19.Ra1 Rxa1 20.Rxa1 Nb5 21.Bf3 Qe7 22.Nb3 Be6 23.Nc5 Bh3 24.Nb3 Nc3 25.e3 Qf6 26.Bg2 dxe3 27.fxe3 Ne2+ 28.Kh1 Qf2 29.Bxh3 Bxa1 30.Qb1 Bc3 0-1
2018.07.01 ch-Commonwealth 2018
2559652 Bhambure, S (2183) Koustav, Chatterjee (2365) 0-1
1.d4 Nf6 2.c4 e6 3.Nf3 d5 4.Nc3 Bb4 5.Qa4+ Nc6 6.e3 O-O 7.Qc2 dxc4 8.Bxc4 a6 9.O-O Bd6 10.Rd1 Qe7 11.e4 e5 12.dxe5 Nxe5 13.Be2 Nc6 14.Bc4 Ne5 15.Be2 Nc6 16.Bc4 Ne5 17.Be2 Nc6 18.Bc4 Ne5 19.Be2 Nxf3+ 20.Bxf3 c6 21.g3 Bh3 22.Bg2 Bxg2 23.Kxg2 Bb4 24.f3 Rad8 25.Be3 Nd7 26.Bc1 Nf6 27.Be3 Nd7 28.Bf2 Bc5 29.f4 b5 30.a3 f6 31.Rac1 Rfe8 32.Ra1 Rf8 33.Rac1 Rfe8 34.b4 Bxf2 35.Kxf2 Nb6 36.Kg2 Nd7 37.Kf2 Nb6 38.Rxd8 Rxd8 39.Rd1 Nc4 40.Rc1 Nb6 41.Rd1 Nc4 42.Rxd8+ Qxd8 43.Ne2 Qb6+ 44.Ke1 Qe3 45.Qd1 h6 46.Qd4 Qxa3 47.Qc5 a5 48.Qxc6 Qxb4+ 49.Kf2 Kh7 50.Qd5 Nb6 51.Qf5+ Kh8 52.e5 Qc5+ 53.Kf3 Nc4 54.Ke4 0-1
2018.06.30 ch-Commonwealth 2018
2559630 Koustav, Chatterjee (2365) Arun, Rathi (1970) 1-0
1.d4 d6 2.Nf3 Nf6 3.Bf4 g6 4.e3 Bg7 5.h3 O-O 6.Be2 Nbd7 7.O-O b6 8.c4 Bb7 9.Nc3 Ne4 10.Nxe4 Bxe4 11.Bh2 c5 12.Qd2 cxd4 13.Nxd4 Bb7 14.Rac1 a5 15.Rfd1 Qc7 16.b3 Qc5 17.Bf1 Rfc8 18.Nb5 Be5 19.Bxe5 Qxe5 20.Nc3 Nc5 21.f3 h5 22.Nd5 Nd7 23.e4 Bxd5 24.exd5 Qg3 25.f4 Qh4 26.Re1 Qf6 27.g4 hxg4 28.hxg4 g5 29.fxg5 Qf3 30.Bg2 Qxg4 31.Re4 Qh5 32.Rxe7 Ne5 33.Rf1 Re8 34.Rxe8+ Rxe8 35.Qe3 Qh2+ 36.Kxh2 Ng4+ 37.Kh3 Nxe3 38.Rf6 Rd8 39.Bf3 Nc2 40.Bh5 Rd7 41.Bg4 Rd8 42.g6 fxg6 43.Kh4 Nb4 44.Kg5 Nd3 45.Be6+ Kh8 46.Rf7 Ne5 47.Rb7 Rf8 48.Kh6 1-0
2018.06.29 ch-Commonwealth 2018
2559570 Koustav, Chatterjee (2365) Bala Kannamma, P (2062) 0-1
1.c4 c5 2.g3 Nf6 3.Bg2 Nc6 4.Nc3 g6 5.a3 Bg7 6.Rb1 a5 7.d3 O-O 8.Bd2 d6 9.Nf3 Bd7 10.O-O Qc8 11.Re1 Bh3 12.Bh1 h6 13.Nd5 Nxd5 14.cxd5 Nb8 15.Bc3 Nd7 16.Bxg7 Kxg7 17.b4 axb4 18.axb4 b6 19.Qb3 Ra7 20.Nd2 f5 21.Nc4 f4 22.e3 fxg3 23.hxg3 Kh7 24.bxc5 bxc5 25.Ra1 Qc7 26.Qc3 Nf6 27.e4 Rxa1 28.Rxa1 Ng4 29.f3 Ne5 30.Nxe5 dxe5 31.Ra6 Bd7 32.Qa5 Rc8 33.Qxc7 Rxc7 34.f4 exf4 35.gxf4 Kg7 36.Kf2 Kf7 37.Ke3 h5 38.e5 Bf5 39.d4 cxd4+ 40.Kxd4 Rc1 41.Bf3 Rf1 42.Ke3 h4 43.Ra7 Kf8 44.Ra8+ Kg7 45.Ke2 Rc1 46.e6 Rc2+ 47.Ke1 Rc1+ 48.Ke2 Rc2+ 49.Kd1 Rc3 50.Bh1 Rh3 51.Bg2 Rg3 52.Bf1 h3 53.Bxh3 Rxh3 54.Ke2 Rd3 55.Rd8 Be4 56.Rd7 Kf6 0-1
2018.06.28 ch-Commonwealth 2018
2559533 GM Debashis, D (2522) Koustav, Chatterjee (2365) 1-0
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Nf3 O-O 5.Qc2 d5 6.Bg5 h6 7.Bh4 dxc4 8.e4 g5 9.Bg3 b5 10.e5 Nh5 11.Be2 Bb7 12.Rd1 Kg7 13.O-O Nxg3 14.fxg3 Bxc3 15.bxc3 Nd7 16.h4 g4 17.Nh2 f5 18.exf6+ Nxf6 19.Nxg4 Be4 20.Qd2 Nxg4 21.Rxf8 Qxf8 22.Bxg4 Qd6 23.Re1 Bd5 24.Re5 Rf8 25.Bh3 c5 26.Qe3 Rf6 27.dxc5 Qa6 28.c6 Qxc6 29.Qxa7+ Kg8 30.a3 Qd6 31.Qd4 Kf7 32.Bxe6+ Rxe6 33.Rxd5 Qb6 34.Rc5 Rd6 35.Qf2+ Kg7 36.Qf5 Rf6 37.Qd7+ Rf7 38.Qxb5 Qa7 39.Qxc4 1-0
2018.06.27 ch-Commonwealth 2018
2559525 Koustav, Chatterjee (2365) Polakhare, Aryan (2009) 1-0
1.c4 e5 2.g3 Nf6 3.Bg2 h6 4.Nf3 e4 5.Nd4 d5 6.cxd5 Qxd5 7.Nc2 Qh5 8.h3 Qg6 9.Nc3 Bd7 10.Ne3 Bc5 11.d4 Bb6 12.Nc4 Nc6 13.d5 Nd8 14.Nxb6 axb6 15.Qd4 O-O 16.Nxe4 Nxd5 17.Qxd5 Bc6 18.Qd3 f5 19.O-O fxe4 20.Qc3 Ne6 21.Be3 Ra5 22.Rfd1 Qh5 23.Rd2 Ng5 24.h4 Nh7 25.b4 Re5 26.a4 Nf6 27.b5 Nd5 28.Qb3 Be8 29.Bf4 Bf7 30.Bxe5 Qxe5 31.Qb2 Qf5 32.e3 Bh5 33.Qb3 c6 34.bxc6 bxc6 35.Qc4 Qe5 36.Rc1 Bf3 37.Qxc6 Ne7 38.Qd6 Qa5 39.Rb2 Rf7 40.Qxb6 Qxa4 41.Bxf3 exf3 42.Qe6 Qe8 43.Rcb1 Kh7 44.Rb8 Rf6 45.Rxe8 Rxe6 46.Rb7 Ra6 47.Rexe7 Ra1+ 48.Kh2 Ra8 49.Rxg7+ Kh8 50.g4 Ra2 51.Kg3 h5 52.g5 Ra1 53.Rh7+ Kg8 54.Rhc7 Ra8 55.g6 1-0
2018.06.26 ch-Commonwealth 2018
2559503 Adarsh, Tripathi (1858) Koustav, Chatterjee (2365) 0-1
1.e4 Nf6 2.e5 Nd5 3.c4 Nb6 4.d4 d6 5.exd6 cxd6 6.Nf3 g6 7.Be2 Bg7 8.O-O O-O 9.Bg5 Nc6 10.h3 Bf5 11.Nc3 h6 12.Be3 d5 13.c5 Nc4 14.Bc1 b6 15.b3 bxc5 16.bxc4 cxd4 17.Bxh6 Bxh6 18.Nb5 e5 19.cxd5 Qxd5 20.Nc7 Qd8 21.Nxa8 d3 22.g4 dxe2 23.Qxe2 Bd3 24.Qb2 Bxf1 25.Rxf1 Qxa8 26.Nxe5 Bg7 27.f4 Nxe5 28.fxe5 Qd5 0-1
2018.05.28 11th KIIT Elite Open 2018
2574682 Koustav, Chatterjee (2364) IM Vignesh, N R (2485) 1/2-1/2
1.c4 e5 2.g3 Nf6 3.Bg2 d5 4.cxd5 Nxd5 5.Nc3 Nb6 6.Nf3 Nc6 7.O-O Be7 8.Rb1 O-O 9.b4 e4 10.Nxe4 Bf5 11.Qc2 Bxb4 12.Bb2 Qe7 13.d3 Rad8 14.Rfc1 Bxe4 15.dxe4 Ba3 16.Bxa3 Qxa3 17.e5 Qe7 18.Ne1 Qxe5 19.Bxc6 bxc6 20.Nf3 Qf6 21.Rb3 Rfe8 22.Ra3 Nc8 23.Ra6 Nb6 24.Rxa7 Nd5 25.Rb7 h6 26.a4 Ra8 27.Qxc6 Qxc6 28.Rxc6 Rxa4 29.Rc5 c6 30.Rb2 Rb4 31.Rxb4 Nxb4 1/2-1/2
2018.05.28 11th KIIT Elite Open 2018
2574699 GM Sandipan, C (2573) Koustav, Chatterjee (2364) 1-0
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Bd2 d5 6.Nf3 b6 7.cxd5 exd5 8.Rc1 Be7 9.Ne5 Bb7 10.Bd3 c5 11.O-O Nbd7 12.f4 Ne4 13.Nxe4 dxe4 14.Bb5 Nxe5 15.dxe5 a6 16.Be2 f5 17.Qb3+ Kh8 18.Rfd1 Qc7 19.Bc3 Rad8 20.e6 Bc8 21.Be5 Qc6 22.Qc3 Rg8 23.Rxd8 Bxd8 24.Rd1 Be7 25.g4 Bxe6 26.g5 b5 27.b3 Qb6 28.Kf2 a5 29.h4 b4 30.Qb2 c4 31.Bxc4 Bxc4 32.bxc4 Qc6 33.h5 h6 34.g6 a4 35.Qd4 b3 36.axb3 axb3 37.Qd5 Qb6 38.Qb5 Qe6 39.Qxb3 Bf6 40.Bxf6 Qxf6 41.Kg3 1-0
2018.05.18 3rd Kolkata GM Open 2018
2576825 Koustav, Chatterjee (2364) GM Tran Tuan Minh (2512) 0-1
1.c4 e5 2.g3 c6 3.Nf3 e4 4.Nd4 Nf6 5.Bg2 d5 6.d3 Bb4+ 7.Nc3 O-O 8.O-O e3 9.fxe3 dxc4 10.Nc2 Bxc3 11.bxc3 Bg4 12.d4 Re8 13.Rf4 Bh5 14.e4 Bg6 15.e5 Rxe5 16.Ne3 Rxe3 17.Bxe3 Nd5 18.Bxd5 cxd5 19.Qf1 Nc6 20.Qf3 Qe7 21.Rf1 Re8 22.Bd2 Qe6 23.Rf2 Ne7 24.g4 Be4 25.Qg3 f6 26.Rf1 Qa6 27.R4f2 Qxa2 28.Bc1 Qa6 29.h4 Qe6 30.h5 Rf8 31.h6 Rf7 32.hxg7 Kxg7 33.Bg5 Ng8 34.Bh4 b5 35.g5 f5 36.Qh3 Ne7 37.g6 Nxg6 38.Bg5 Kg8 39.Kh2 a5 40.Bf4 b4 41.cxb4 axb4 42.Rg1 b3 43.Qc3 Qf6 44.Bg5 Qb6 45.Bc1 f4 46.Bb2 Qc7 47.Qh3 f3+ 48.Rg3 c3 49.Bxc3 Qxc3 50.exf3 b2 51.Qe6 Qxd4 52.Rgg2 b1=Q 53.fxe4 Qb8+ 0-1
2018.05.17 3rd Kolkata GM Open 2018
2576804 GM Shyam, SM (2518) Koustav, Chatterjee (2364) 1/2-1/2
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Be3 Ng4 7.Bg5 h6 8.Bc1 Nf6 9.f3 e5 10.Nb3 Be6 11.Be3 Nbd7 12.Qd2 Be7 13.O-O-O b5 14.Nd5 Bxd5 15.exd5 Nb6 16.Bxb6 Qxb6 17.Kb1 O-O 18.g4 a5 19.a3 Rfc8 20.h4 Rc7 21.g5 Nh5 22.Bd3 b4 23.a4 Rac8 24.Bf5 Rd8 25.Bg4 Nf4 26.gxh6 gxh6 27.Bf5 Kh8 28.Rdg1 h5 29.Rg3 Bf6 30.Be4 Rcc8 1/2-1/2
2018.05.16 3rd Kolkata GM Open 2018
2576778 Koustav, Chatterjee (2364) GM Burmakin, V (2528) 1/2-1/2
1.c4 c6 2.Nf3 Nf6 3.g3 d5 4.Bg2 Bg4 5.Ne5 Be6 6.cxd5 Bxd5 7.Nf3 e5 8.Nc3 Bxf3 9.Bxf3 Bc5 10.d3 Nbd7 11.O-O O-O 12.Bd2 Be7 13.Rb1 a5 14.a3 Nb6 15.b4 axb4 16.axb4 Qc7 17.Qb3 h6 18.Rfc1 Qd7 19.Be3 Nbd5 20.Bc5 Rfe8 21.Bxe7 Nxc3 22.Qxc3 Qxe7 23.b5 e4 24.dxe4 Nxe4 25.Bxe4 Qxe4 26.bxc6 bxc6 27.Qxc6 Qxc6 28.Rxc6 Rxe2 29.Rb7 Rf8 30.h4 Re5 1/2-1/2
2018.01.16 16th Delhi Open 2018
2626336 Koustav, Chatterjee (2288) GM Tukhaev, A (2570) 0-1
1.d4 g6 2.Bf4 Bg7 3.Nc3 d6 4.e4 a6 5.Nf3 b5 6.a3 Bb7 7.Qd2 Nd7 8.O-O-O c5 9.dxc5 Nxc5 10.e5 Ne6 11.Ng5 Nxg5 12.Bxg5 Bxe5 13.Nd5 Rc8 14.h4 Bg7 15.h5 Rc5 16.h6 Bxb2+ 17.Kxb2 Rxd5 18.Qc3 f6 19.Rxd5 Bxd5 20.f4 Qd7 21.Ka1 Kf7 22.Bd3 Qc6 23.Qb2 Bxg2 24.Re1 e5 25.fxe5 dxe5 26.Kb1 Ne7 27.Rxe5 Nd5 28.Ka1 fxe5 29.c4 bxc4 30.Bb1 Nf6 31.Qxe5 Re8 32.Qd4 Re1 33.Ka2 Rxb1 0-1
2018.01.15 16th Delhi Open 2018
2628479 GM Sengupta, D (2586) Koustav, Chatterjee (2288) 1/2-1/2
1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 5.Nc3 Qc7 6.g4 a6 7.Bg2 b5 8.Nxc6 Qxc6 9.O-O Bb7 10.a4 b4 11.Nd5 Bc5 12.Nf4 Qc7 13.Nd3 Bd6 14.f4 Bc5+ 15.Kh1 Nf6 16.Qe2 d5 17.e5 Ne4 18.f5 Bd4 19.fxe6 fxe6 20.Be3 Bxe5 21.Bxe4 dxe4 22.Nxe5 Qxe5 23.Qd2 a5 24.Rad1 Qc7 25.Qf2 Ba6 26.Rfe1 Rf8 27.Qh4 g6 28.Kg1 Rf7 29.Rd2 Bc4 30.Red1 Bd5 31.Rf1 Qe7 32.Qxe7+ Kxe7 33.Bc5+ Ke8 34.Rxf7 Kxf7 35.Kf2 Rc8 36.Bb6 b3 37.c3 Rc4 38.Rd4 Rxd4 39.Bxd4 Bc6 40.Ke3 Bxa4 41.Bb6 Bc6 42.Bxa5 e5 43.c4 h5 44.gxh5 gxh5 45.Be1 Ke6 46.Kd2 Kf5 47.Bg3 Bd7 48.Kc3 e3 49.Kxb3 e4 50.Kc2 Kg4 51.Kd1 Kf3 52.Ke1 e2 53.b4 e3 54.b5 Be8 55.Bd6 Bd7 56.Be7 Be8 1/2-1/2
2018.01.14 16th Delhi Open 2018
2628463 Koustav, Chatterjee (2288) GM Pruijssers, R (2536) 1/2-1/2
1.d4 Nf6 2.Bf4 d5 3.e3 c5 4.c3 Nc6 5.Nd2 e6 6.Ngf3 Bd6 7.Bg3 O-O 8.Bd3 b6 9.Qe2 Be7 10.Ne5 Bb7 11.Rd1 Nxe5 12.dxe5 Ne8 13.e4 Nc7 14.exd5 exd5 15.O-O Qd7 16.f4 f5 17.exf6 Bxf6 18.Nf3 Rae8 1/2-1/2
2018.01.13 16th Delhi Open 2018
2628448 IM Gusain, H (2450) Koustav, Chatterjee (2288) 0-1
1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 5.Nc3 Qc7 6.Be3 a6 7.a3 Nf6 8.f4 d6 9.Qf3 Bd7 10.Be2 Be7 11.O-O-O Rc8 12.f5 Nxd4 13.Rxd4 O-O 14.Kb1 Qa5 15.g4 Rxc3 16.bxc3 d5 17.exd5 Nxd5 18.Rxd5 exd5 19.Rd1 Bc6 20.Bd4 Bxa3 21.f6 g6 22.Bd3 Re8 23.Qf2 Bb5 24.Bb6 Qxc3 25.Qd4 Qa5 26.Qf2 Qc3 27.Qd4 Qc6 28.g5 Bxd3 29.Rxd3 Re1+ 30.Ka2 Bb4 31.Kb2 Re2 32.Kb3 a5 33.c3 Bf8 34.Bxa5 Re4 35.Qxe4 dxe4 36.Rd8 Qe6+ 37.Kb2 h6 38.Bb4 hxg5 39.Rxf8+ Kh7 40.Kc2 e3 41.Kd1 Qxf6 42.Bc5 Qf2 43.Kc1 Qd2+ 44.Kb1 e2 45.Rxf7+ Kg8 0-1
2018.01.12 16th Delhi Open 2018
2628405 GM David, Alb (2553) Koustav, Chatterjee (2288) 1-0
1.e4 c5 2.Nf3 e6 3.g3 Nc6 4.Bg2 Qc7 5.O-O Nf6 6.Re1 Be7 7.c3 O-O 8.e5 Nd5 9.d3 f6 10.exf6 Nxf6 11.d4 Qb6 12.Bh3 Qd8 13.Bg5 cxd4 14.cxd4 b6 15.Nc3 Bb7 16.a3 Kh8 17.Rc1 Rc8 18.Bf4 Na5 19.Ne5 Nc4 20.Nxc4 Rxc4 21.Qd3 Rc8 22.Bg2 Bxg2 23.Kxg2 Rc6 24.d5 exd5 25.Nxd5 Nxd5 26.Qxd5 Bf6 27.b4 Rxc1 28.Rxc1 Bb2 29.Rc7 Bxa3 30.Rxd7 Qf6 31.Rxg7 Bxb4 32.Rg8+ Rxg8 33.Be5 Bc3 34.Bxf6+ Bxf6 35.Qf7 1-0
2018.01.10 16th Delhi Open 2018
2628376 Koustav, Chatterjee (2288) IM Karthikeyan, P2 (2497) 1/2-1/2
1.c4 Nf6 2.g3 e6 3.Bg2 d5 4.Nf3 dxc4 5.Qa4+ c6 6.Qxc4 b5 7.Qc2 Bb7 8.a4 a6 9.d4 Nbd7 10.O-O Rc8 11.Rd1 Qb6 12.e4 Be7 13.e5 Nd5 14.Bg5 Bb4 15.Nc3 c5 16.axb5 axb5 17.Qb3 h6 18.Bd2 O-O 19.dxc5 Bxc5 20.Ne4 b4 21.Nxc5 Nxc5 22.Qc4 f5 23.exf6 Rxf6 24.Be3 Ba6 1/2-1/2
2018.01.07 3rd IIFL Wealth Mumbai Op
2631864 Koustav, Chatterjee (2288) Bala Kannamma, P (2058) 1/2-1/2
1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Bb7 5.Bg2 Be7 6.O-O O-O 7.d5 exd5 8.Nh4 c6 9.cxd5 Nxd5 10.Nf5 Nf6 11.e4 d5 12.Nc3 dxe4 13.Nxe4 Nxe4 14.Bxe4 Bf6 15.Qc2 g6 16.Rd1 Qc7 17.Nd6 Be5 18.Nc4 Na6 19.Bg5 Nb4 20.Qb3 Nd5 21.Rac1 Bg7 22.Qa3 h6 23.Nd6 hxg5 24.Rxd5 c5 25.Nxb7 Qxb7 26.Rcd1 Qe7 27.Qd3 Rae8 28.Re1 Bxb2 29.Re2 Bd4 30.Qd2 Qf6 31.Rxg5 Re7 32.h4 Rd8 33.Qc2 Kg7 34.Kg2 Rde8 35.f3 Re5 36.Rg4 Qe6 37.Re1 Qd6 38.h5 Qd7 39.Rh1 g5 40.Bd3 Kh6 41.Re4 Rxe4 42.Bxe4 Re5 43.g4 Qe7 44.a4 Qf6 1/2-1/2
2018.01.06 3rd IIFL Wealth Mumbai Op
2631738 GM Rahman, Zia (2485) Koustav, Chatterjee (2288) 1-0
1.Nf3 c5 2.g3 d5 3.Bg2 Nf6 4.O-O e6 5.c4 d4 6.e3 Nc6 7.exd4 cxd4 8.d3 Bd6 9.a3 a5 10.Bg5 h6 11.Bxf6 gxf6 12.Nbd2 f5 13.Rc1 Qe7 14.Re1 O-O 15.c5 Bxc5 16.Nh4 Qd6 17.Qh5 Kg7 18.Bxc6 bxc6 19.Nc4 Qd8 20.Ne5 Qd5 21.Neg6 Bd6 22.Nxf8 Bxf8 23.g4 fxg4 24.Re5 Qd6 25.Qxg4+ Kh8 26.f4 Bg7 27.Rec5 Bd7 28.Nf3 Rg8 29.Ng5 Qe7 30.Kh1 Bf8 31.Qh5 Be8 32.Nf3 f5 33.Qh3 Rg4 34.Ne5 Rxf4 35.Rxa5 c5 36.Qg2 Bg7 37.Rg1 Kh7 38.Rxc5 Rf2 39.Qxf2 Qxc5 40.Nf3 Bc6 41.Qg3 Qa7 42.Qg6+ Kh8 43.Rg3 f4 44.Rh3 Qb7 45.Rxh6+ Bxh6 46.Qxh6+ Kg8 47.Qxe6+ Kh8 48.Qh6+ Kg8 49.Qg5+ Kh8 50.Qh4+ Kg8 51.Qg4+ Kh8 52.Kg2 Qxb2+ 53.Kh3 Bxf3 54.Qxf3 Qxa3 55.Qh5+ Kg7 56.Qe5+ Kg8 57.Qxd4 Qf8 58.Kg4 Qc8+ 59.Kxf4 Qc7+ 60.Qe5 Qc1+ 61.Kg3 Qg1+ 62.Kh4 Kf7 63.Qf4+ Ke8 64.d4 Qg2 65.h3 Qg1 66.Kh5 Qd1+ 67.Kh6 Qb3 68.Qe5+ Kf7 69.Qf5+ Ke7 70.d5 Qc3 71.Kg6 Qb3 72.h4 Ke8 73.Qe5+ Kd8 74.h5 Qd3+ 75.Qf5 1-0
2018.01.05 3rd IIFL Wealth Mumbai Op
2631663 Koustav, Chatterjee (2288) Kavinda, A (2003) 1-0
1.d4 g6 2.Bf4 Nf6 3.Nc3 d5 4.e3 Bg7 5.h4 h6 6.Be2 c5 7.Nb5 Na6 8.c3 O-O 9.Nf3 Ne8 10.Ne5 Nd6 11.a4 cxd4 12.exd4 Nxb5 13.axb5 Nc7 14.Qd2 Kh7 15.b6 Ne6 16.Rxa7 Rxa7 17.bxa7 Qa5 18.Be3 Qxa7 19.f4 f6 20.Nxg6 Kxg6 21.f5+ Kh7 22.fxe6 Qa1+ 23.Bd1 Qa6 24.Rh3 Qxe6 25.Kf2 f5 26.Bf4 Qb6 27.Re3 e6 28.Kf1 Bd7 29.Kg1 Ra8 30.Kh2 Ra2 31.Re2 Bb5 32.Rf2 Qd8 33.Kh3 Ra6 34.g4 fxg4+ 35.Bxg4 Be8 36.Be5 Bg6 37.h5 Be4 38.Rf7 Bg6 39.Rf3 Be8 40.Rf2 1-0
2018.01.04 3rd IIFL Wealth Mumbai Op
2631529 GM Nguyen Duc Hoa (2504) Koustav, Chatterjee (2288) 1-0
1.e4 c6 2.d4 d5 3.e5 Bf5 4.Nd2 e6 5.Nb3 c5 6.dxc5 Nc6 7.Bb5 Bxc5 8.a4 Qb6 9.Nxc5 Qxc5 10.c3 a6 11.Be3 Qe7 12.Bxc6+ bxc6 13.b4 Qc7 14.Nf3 Bg4 15.O-O f6 16.h3 Bxf3 17.Qxf3 Qxe5 18.b5 Ne7 19.Bc5 axb5 20.axb5 Kf7 21.b6 Nf5 22.Rfe1 Rxa1 23.Rxa1 h5 24.g3 g5 25.Kf1 Kg6 26.Re1 Qb8 27.Rxe6 Qc8 28.Re2 Qa6 29.Kg1 Qc4 30.Re6 Qxc5 31.g4 hxg4 32.hxg4 d4 33.Rxc6 Qb5 34.gxf5+ Qxf5 35.Qxf5+ Kxf5 36.cxd4 Rh3 37.Rc5+ Ke4 38.Rb5 Rh8 39.d5 Ke5 40.Kg2 Kd6 41.Kg3 f5 42.Kf3 Re8 43.b7 Rb8 44.Ke3 Ke5 45.f4+ gxf4+ 46.Kf3 Kd6 47.Kxf4 Kc7 48.Kxf5 Rf8+ 49.Ke6 Kb8 50.d6 1-0
2018.01.03 3rd IIFL Wealth Mumbai Op
2631444 Koustav, Chatterjee (2288) CM Prraneeth, Vuppala (1806) 1-0
1.d4 Nf6 2.Bg5 Ne4 3.Bf4 d5 4.f3 Nf6 5.e4 c5 6.dxc5 Qa5+ 7.Nc3 dxe4 8.Qd2 Qxc5 9.O-O-O Nbd7 10.fxe4 e5 11.Be3 Qc6 12.Bb5 Qc7 13.Nd5 Nxd5 14.Qxd5 Be7 15.Nf3 O-O 16.Bxd7 Bf6 17.Qc5 Qb8 18.Qd6 Bxd7 19.Qxb8 Raxb8 20.Rxd7 Rfc8 21.Rhd1 h6 22.R1d5 Rc4 23.Nd2 Ra4 24.Kb1 a5 25.b3 Rb4 26.c3 1-0
2018.01.02 3rd IIFL Wealth Mumbai Op
2631345 WFM Bommini, Mounika Akshaya (1829) Koustav, Chatterjee (2288) 0-1
1.d4 Nf6 2.Bf4 d5 3.e3 c5 4.c3 Nc6 5.Nd2 Bf5 6.Qb3 Qd7 7.Ngf3 c4 8.Qb5 Nh5 9.Be2 Nxf4 10.exf4 e6 11.b3 Bd6 12.bxc4 a6 13.Qb2 Bxf4 14.O-O O-O 15.Nh4 Bxd2 16.Qxd2 Be4 17.f3 Bg6 18.Nxg6 hxg6 19.c5 e5 20.Rab1 Rfe8 21.Rb2 Qe7 22.Rfb1 exd4 23.cxd4 Qe3+ 24.Qxe3 Rxe3 25.Bf1 Nxd4 26.Rxb7 Rc3 27.Rd1 Nf5 28.Rxd5 Rc1 29.Rb3 Re8 30.Kf2 Rc2+ 31.Kg1 Re1 32.Rd8+ Kh7 33.g4 Ne3 34.Rxe3 Rxe3 35.Rd1 Rxf3 36.Bxa6 Rxc5 37.Rd2 Ra3 38.Bb7 Rc4 39.g5 Rg4+ 40.Rg2 Rxg2+ 41.Kxg2 Rxa2+ 42.Kg3 Kg8 43.h4 Kf8 44.Bd5 Ra3+ 45.Kg4 f5+ 46.gxf6 gxf6 47.Kf4 Kg7 48.Kg4 f5+ 0-1
2018.01.01 3rd IIFL Wealth Mumbai Op
2639444 Koustav, Chatterjee (2288) Mohith, R (1671) 1-0
1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.cxd5 Nxd5 5.e4 Nxc3 6.bxc3 Bg7 7.Nf3 c5 8.Rb1 O-O 9.Be2 Nc6 10.d5 Ne5 11.Nxe5 Bxe5 12.O-O b6 13.Qc2 e6 14.f4 Bg7 15.dxe6 Bxe6 16.f5 Bd7 17.Bf4 Qc8 18.Bd6 Rd8 19.Rbd1 a6 20.h4 b5 21.h5 c4 22.hxg6 hxg6 23.Qc1 Qc6 24.fxg6 fxg6 25.Qg5 Be8 26.e5 Qb6+ 27.Kh1 Ra7 28.Bg4 Bf7 29.Rxf7 Rxf7 30.Be6 Re8 31.Bxf7+ Kxf7 32.Rf1+ Kg8 33.Qxg6 Qd8 34.Qf7+ Kh7 35.Rf3 1-0
2017.12.31 3rd IIFL Wealth Mumbai Op
2639279 GM David, Alb (2571) Koustav, Chatterjee (2288) 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 Bd6 9.Ng3 Nge7 10.h3 Bxg3 11.fxg3 Bh5 12.Bf4 Qd7 13.Nd2 Bg6 14.Be2 O-O 15.Nb3 b6 16.g4 f6 17.Qg3 e5 18.Be3 e4 19.a4 Nd8 20.Bb5 Qb7 21.a5 Be8 22.Be2 bxa5 23.Nc5 Qb6 24.Bf4 Rc8 25.b4 a4 26.Bd6 Rf7 27.Nxa4 Bxa4 28.Rxa4 Qc6 29.Ra3 Nb7 30.Bb8 f5 31.Rxa7 Rcf8 32.Be5 Ng6 33.b5 Qc8 34.Rxf5 Rxf5 35.gxf5 Nxe5 36.Qxe5 Rd8 37.Qe7 Rd7 38.Qe6+ Kh8 39.Rxb7 1-0
2017.09.26 World Youth Open U14 2017
2681149 Nesterov, Arseniy (2380) Koustav, Chatterjee (2214) 1-0
1.d4 d5 2.c4 e6 3.Nc3 c6 4.e3 f5 5.Nf3 Nf6 6.Ne5 Bd6 7.f4 O-O 8.Be2 Nbd7 9.O-O Ne4 10.Nxe4 fxe4 11.c5 Nxe5 12.fxe5 Rxf1+ 13.Bxf1 Bc7 14.b4 Bd7 15.a4 Qh4 16.Bd2 Rf8 17.Qe1 Qh6 18.b5 Bd8 19.Qe2 Qg6 20.Rb1 h5 21.Rb3 Bh4 22.Be1 Bg5 23.Bf2 Qf5 24.Qe1 h4 25.h3 Bd8 26.Rb2 Be8 27.bxc6 bxc6 28.Be2 Ba5 29.Qf1 Bh5 30.Bxh4 Qh7 31.Bf2 Bc3 32.Rb3 Bd2 33.Qd1 Qf5 34.Bg3 Bxe2 35.Qxe2 Qg5 36.Bf2 Ba5 37.Rb7 a6 38.Ra7 Rb8 39.Rxa6 Bc3 40.Rb6 Ra8 41.Rxc6 Rxa4 42.Rxe6 Ra1+ 43.Kh2 Rb1 44.Rb6 Ra1 45.c6 Bxd4 46.exd4 Qf4+ 47.Bg3 Qc1 48.Rb8+ Kf7 49.Qh5+ 1-0
2017.09.25 World Youth Open U14 2017
2681104 Koustav, Chatterjee (2214) FM Erigaisi, Arjun (2328) 0-1
1.d4 Nf6 2.Nf3 b6 3.Bf4 Bb7 4.e3 c5 5.c3 g6 6.Bd3 Bg7 7.h3 O-O 8.O-O d6 9.Qe2 Nc6 10.Nbd2 a6 11.Rad1 cxd4 12.exd4 b5 13.a3 Re8 14.Bh2 Qb6 15.Rfe1 Rac8 16.Ne4 Na5 17.Nxf6+ Bxf6 18.Nd2 Nc4 19.Bxc4 bxc4 20.Nxc4 Qc6 21.Ne3 a5 22.d5 Qb6 23.Bf4 Bg7 24.Qd2 Qb3 25.h4 Rb8 26.Qe2 Qa4 27.Qf3 e5 28.Bg3 f5 29.h5 f4 30.hxg6 fxe3 31.Qh5 h6 32.Rxe3 Rf8 33.b4 Qxa3 34.f4 exf4 35.Re7 fxg3 36.Rde1 Qxc3 37.bxa5 Qd4+ 38.Kh1 Qf6 0-1
2017.09.24 World Youth Open U14 2017
2685600 CM Teclaf, Pawel (2394) Koustav, Chatterjee (2214) 1-0
1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 5.Nc3 Qc7 6.Ndb5 Qb8 7.Be3 a6 8.Bb6 axb5 9.Nxb5 Bb4+ 10.c3 Ba5 11.Nd6+ Kf8 12.Bc5 Nge7 13.Qh5 Nd8 14.O-O-O Bc7 15.Bb5 b6 16.Bb4 Bxd6 17.Bxd6 Qb7 18.e5 Ke8 19.Bxe7 Kxe7 20.Qg5+ Ke8 21.Qxg7 Rf8 22.a4 Nc6 23.Rd6 Na7 24.Bd3 Nc6 25.Be4 Qc7 26.Bxc6 dxc6 27.Rhd1 Bd7 28.Rxd7 Qxd7 29.Rxd7 Kxd7 30.Qxh7 Rxa4 31.Qd3+ Ke8 32.Qd6 Rc4 33.Qb8+ Ke7 34.Qc7+ Ke8 35.Qxb6 f6 36.Qb3 1-0
2017.09.23 World Youth Open U14 2017
2685557 Koustav, Chatterjee (2214) FM Batsuren, Dambasuren (2301) 1/2-1/2
1.c4 Nf6 2.g3 e6 3.Bg2 d5 4.Nf3 Be7 5.O-O O-O 6.b3 b6 7.Bb2 Bb7 8.cxd5 exd5 9.d4 Nbd7 10.Nc3 Ne4 11.Nxe4 dxe4 12.Nd2 f5 13.Rc1 Nf6 14.Nc4 Nd5 15.a3 a5 16.e3 Bf6 17.Qc2 Qe7 18.Rfd1 Rac8 19.b4 axb4 20.axb4 Ra8 21.Qb3 Qxb4 22.Qxb4 Nxb4 23.Ba3 Be7 24.Bxb4 Bxb4 25.Ne5 Rac8 26.Nc6 Bxc6 27.Rxc6 Bd6 28.Bf1 Kf7 29.h4 Ra8 30.Rc2 Ra5 31.Rb1 Rfa8 32.Kg2 Ke7 33.Bc4 Ra1 34.Rcb2 Rxb1 35.Rxb1 h6 36.Rc1 c6 37.Be2 Ra2 38.Bh5 c5 39.dxc5 Bxc5 40.Kf1 Rb2 41.Rd1 Ke6 42.Bg6 b5 43.Rc1 Bd6 44.Ra1 b4 45.Ra5 Be5 46.Ra6+ Bd6 47.Ra5 Be5 48.Ra6+ Bd6 49.Ra5 Be5 50.Ra6+ Bd6 51.Ra5 1/2-1/2
2017.09.22 World Youth Open U14 2017
2685476 Koustav, Chatterjee (2214) Turgut, Aydin (2225) 1-0
1.c4 e5 2.g3 f5 3.d4 d6 4.Bg2 Be7 5.Nc3 Nf6 6.Nf3 e4 7.Ng5 h6 8.Nh3 g5 9.f3 d5 10.cxd5 exf3 11.exf3 Nxd5 12.f4 Be6 13.Qe2 Qd7 14.fxg5 Nc6 15.Qh5+ Kd8 16.O-O Nxd4 17.Nf4 Nxf4 18.Bxf4 Bc5 19.Kh1 Kc8 20.Rad1 Qe8 21.Qxe8+ Rxe8 22.Na4 Bc4 23.Nxc5 Bxf1 24.Bxb7+ Kb8 25.Rxd4 a5 26.Bxa8 Kxa8 27.gxh6 Re1 28.Kg1 Bb5+ 29.Kf2 Re2+ 30.Kf3 Rxh2 31.Rd2 Rh1 32.Ke3 Ka7 33.Kd4 Kb6 34.b3 Bc6 35.Ne6 Be8 36.Nxc7 Bf7 37.Nd5+ Kc6 38.Rc2+ Kb5 39.a4+ Ka6 40.Rc6+ Kb7 41.Rc7+ Ka6 42.Nb4+ axb4 43.Rxf7 Kb6 44.h7 Kc6 45.Be5 1-0
2017.09.22 World Youth Open U14 2017
2685516 Kopylov, Daniel (2243) Koustav, Chatterjee (2214) 0-1
1.e4 c5 2.Nf3 e6 3.g3 Nc6 4.Bg2 Qc7 5.O-O Nf6 6.Re1 d6 7.c3 e5 8.d4 Be7 9.b4 cxb4 10.cxb4 Bg4 11.d5 Nd4 12.a4 Nc2 13.Bg5 Nxa1 14.Na3 Qd7 15.Qxa1 h6 16.Bd2 Rc8 17.b5 Bh3 18.Bb4 O-O 19.Re3 Bxg2 20.Kxg2 Nh5 21.Qa2 Kh8 22.Nc4 f5 23.Nfxe5 Qe8 24.Nxd6 Bxd6 25.Bxd6 f4 26.Bxf8 Qxe5 27.Bd6 Qxd6 28.e5 Qg6 29.Re1 fxg3 30.hxg3 Nf4+ 31.Kg1 Nh3+ 32.Kg2 Rc2 33.Qxc2 Qxc2 34.Kxh3 Qxf2 35.Rd1 Qf5+ 36.Kh4 g5+ 0-1
2017.09.20 World Youth Open U14 2017
2685434 Rojas, Steven (1942) Koustav, Chatterjee (2214) 0-1
1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 5.Nc3 Qc7 6.Be2 a6 7.O-O Nf6 8.Kh1 Nxd4 9.Qxd4 Bc5 10.Qd3 b5 11.f4 h5 12.Bf3 Bb7 13.e5 Ng4 14.Bxb7 Qxb7 15.Ne4 Be7 16.Qf3 Qc6 17.Bd2 Rc8 18.Rae1 g6 19.a3 Nh6 20.Bb4 Nf5 21.Bxe7 Kxe7 22.c3 Qb6 23.Rd1 Rc6 24.Rd3 Rd8 25.g4 d5 26.gxf5 dxe4 27.f6+ Ke8 28.Rxd8+ Qxd8 29.Qxe4 Rc4 30.Qf3 Qd5 31.Kg2 Rxf4 32.Qxd5 Rg4+ 33.Kh1 exd5 34.Rd1 Kd7 35.Rxd5+ Ke6 36.Rd6+ Kxe5 37.Rxa6 Re4 38.b4 Kf4 39.Rd6 Kf3 40.Rd3+ Re3 41.Rxe3+ Kxe3 42.h4 Kd3 43.Kg2 Kxc3 44.Kf3 Kd4 45.Kf4 Kd5 46.Kg5 Ke5 47.Kh6 Kxf6 48.a4 bxa4 0-1
2017.09.19 World Youth Open U14 2017
2685400 Koustav, Chatterjee (2214) Vazquez, Facundo (1884) 1-0
1.d4 Nf6 2.Bg5 g6 3.Bxf6 exf6 4.e3 d5 5.g3 Bg7 6.Bg2 O-O 7.Ne2 c6 8.Nd2 Nd7 9.O-O f5 10.c4 Nf6 11.cxd5 Nxd5 12.Rc1 Be6 13.a3 Rc8 14.Qa4 Bh6 15.Kh1 a5 16.Nf4 Bxf4 17.gxf4 Ra8 18.Qd1 Re8 19.Nb3 Nf6 20.Nc5 Ng4 21.h3 Qh4 22.Kg1 Nf6 23.Nxb7 Bd5 24.Nd6 Re6 25.Nc4 g5 26.Ne5 g4 27.Bxd5 cxd5 28.Rc2 Qxh3 29.f3 g3 30.Qe2 Nh5 31.Qg2 Qh4 32.Rfc1 Rae8 33.Qh1 Qxh1+ 34.Kxh1 f6 35.Nd7 Rxe3 36.Kg2 Kf7 37.Nb6 Nxf4+ 38.Kxg3 Ne2+ 39.Rxe2 Rxe2 40.Nxd5 Rxb2 41.Rc6 Re6 42.Rc7+ Ke8 43.Rxh7 Kd8 44.Ra7 Rd6 45.Rxa5 Rb3 46.Nf4 Kd7 47.d5 Kc7 48.Ra7+ Kb6 49.Ra4 Rb2 50.Ra8 Rd7 51.Rb8+ Rb7 52.Rg8 Ra7 53.Rg6 Rxa3 54.Rxf6+ Kc5 55.Rxf5 Rbb3 56.Ne6+ Kd6 57.Ng5 Rb7 58.Ne4+ Ke7 59.Re5+ Kd8 60.Rf5 Rg7+ 61.Kf4 Ra4 62.Rf8+ Ke7 63.Rb8 Rf7+ 64.Ke5 Rxf3 65.d6+ Kd7 66.Nc5+ 1-0
2017.09.18 World Youth Open U14 2017
2685315 Koustav, Chatterjee (2214) Ojeda Venegas, Tomas (1972) 1-0
1.d4 Nf6 2.Bg5 g6 3.Bxf6 exf6 4.e3 d5 5.g3 Bd6 6.Bg2 c6 7.Nd2 O-O 8.Ne2 Be6 9.O-O Qd7 10.Rc1 Na6 11.a3 Rfd8 12.c4 dxc4 13.Nxc4 Bf8 14.Na5 Rac8 15.Nf4 Bh6 16.Nxe6 fxe6 17.Qb3 Rc7 18.Qc4 Nb8 19.b4 Rdc8 20.Rc2 b6 21.Nb3 Qf7 22.Rfc1 Bf8 23.Rc3 Kg7 24.R1c2 Bd6 25.Qf1 Qe8 26.Qc1 Qd7 27.Nd2 f5 28.Nc4 Kf8 29.e4 b5 30.Na5 Be7 31.exf5 gxf5 32.Nxc6 Nxc6 33.Bxc6 Qxd4 34.Qh6+ Kf7 35.Qxh7+ Qg7 36.Be8+ 1-0
2017.09.18 World Youth Open U14 2017
2685355 Costello, Alexander (2081) Koustav, Chatterjee (2214) 1-0
1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 5.Nc3 Qc7 6.Be3 a6 7.Qf3 d6 8.O-O-O Bd7 9.Qg3 Nf6 10.Kb1 Rc8 11.f3 b5 12.Ndxb5 axb5 13.Nxb5 Qa5 14.Nxd6+ Bxd6 15.Qxd6 Nb4 16.a3 Nxc2 17.Bb6 Qa4 18.Bc5 Rxc5 19.Qxc5 Nxa3+ 20.Kc1 Nb5 21.Rxd7 Nxd7 22.Bxb5 Qa1+ 23.Kc2 Qxh1 24.Qd6 Qxg2+ 25.Kb3 Qxf3+ 26.Ka2 1-0
2017.09.17 World Youth Open U14 2017
2687896 Jodorcovsky, Paulo Leonardo (1616) Koustav, Chatterjee (2214) 0-1
1.d4 d5 2.c4 e6 3.Nc3 c6 4.cxd5 exd5 5.Bf4 Bd6 6.Bxd6 Qxd6 7.e3 Ne7 8.Bd3 O-O 9.Nf3 Ng6 10.O-O f5 11.g3 h6 12.Rb1 a5 13.a3 Be6 14.b4 axb4 15.axb4 b5 16.Ne2 Nd7 17.Nf4 Ne7 18.Nd2 Bf7 19.Qc2 g5 20.Ng2 Bh5 21.Nb3 Bf3 22.Ne1 Bg4 23.f3 Bh3 24.Rf2 f4 25.exf4 gxf4 26.g4 h5 27.g5 Kh8 28.Ng2 Rg8 29.Kh1 Rxg5 30.Qd2 Bxg2+ 31.Rxg2 Rxg2 32.Qxg2 Rg8 33.Qh3 Rg5 34.Nc5 Nxc5 35.bxc5 Qf6 36.Qh4 Rg1+ 0-1
2017.08.20 55th ch-IND Challengers
2703102 Koustav, Chatterjee (2108) GM Deepan, C (2466) 0-1
1.c4 g6 2.g3 Bg7 3.Bg2 d6 4.Nc3 e5 5.d3 Ne7 6.Rb1 O-O 7.e3 h5 8.e4 Bg4 9.Nge2 Qd7 10.h3 Be6 11.Bg5 c6 12.Qd2 Na6 13.Bh6 d5 14.Bxg7 Kxg7 15.f4 dxc4 16.d4 exd4 17.Nxd4 Rad8 18.Rd1 Nb4 19.O-O Nd3 20.Nce2 Bxh3 21.f5 Bxg2 22.Kxg2 Kh7 23.Rh1 Ng8 24.Rh4 Qe7 25.Rdh1 Kg7 26.Qc3 Nf6 27.fxg6 fxg6 28.Qxc4 Ne5 29.Ne6+ Kg8 30.Qb3 Rd3 31.Nc3 Rd2+ 32.Kh3 Qd7 33.Rf4 Rf7 34.Kh4 Nh7 35.g4 Qe7+ 36.Kg3 Rd6 37.Nc5 Kg7 38.Ne2 b6 39.Rxf7+ Nxf7 40.Nd3 Qxe4 0-1
2017.08.19 55th ch-IND Challengers
2703091 IM Nitin, S (2421) Koustav, Chatterjee (2108) 1/2-1/2
1.e4 c5 2.Nf3 e6 3.g3 Nc6 4.Bg2 Qc7 5.O-O a6 6.Re1 d6 7.c3 e5 8.h3 Nf6 9.d4 Be7 10.a4 O-O 11.Na3 Bd7 12.d5 Na5 13.Bg5 c4 14.Nd2 Nxd5 15.h4 Nf6 16.Nc2 Bg4 17.Bf3 Be6 18.Bg2 Bg4 19.Bf3 Be6 20.Bg2 Bg4 21.Bf3 Be6 1/2-1/2
2017.01.12 15th Delhi Open 2017
2800452 Koustav, Chatterjee (2265) GM Horvath, Ad1 (2499) 0-1
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 b6 5.Ne2 Ba6 6.a3 Be7 7.Nf4 d5 8.cxd5 Bxf1 9.Kxf1 Nxd5 10.Qf3 c6 11.g3 O-O 12.Kg2 Nd7 13.Bd2 Nxf4+ 14.Qxf4 c5 15.Rad1 cxd4 16.exd4 Nf6 17.Rhe1 Rc8 18.Qe5 Rc7 19.Bf4 Rd7 20.Qe3 Nd5 21.Nxd5 Rxd5 22.Be5 Rb5 23.Qf3 Qd7 24.Qg4 f6 25.Bf4 Kf7 26.Re2 Qd5+ 27.Kg1 Rc8 28.Rde1 Rc6 29.b4 Qh5 30.Qxh5+ Rxh5 31.Rb1 b5 32.Rc1 Rxc1+ 33.Bxc1 Rd5 34.Bb2 Bd8 35.Rc2 Bb6 36.Rc8 e5 37.dxe5 Rd2 38.Bc3 Rxf2 39.exf6 gxf6 40.Rc7+ Kg6 41.Rc6 Rc2+ 42.Kh1 Bd4 43.Bxd4 Rxc6 44.Bc5 Ra6 0-1
2017.01.11 15th Delhi Open 2017
2800422 GM Venkatesh, M (2439) Koustav, Chatterjee (2265) 1/2-1/2
1.Nf3 d5 2.g3 c6 3.Bg2 Bg4 4.d3 Nd7 5.Nbd2 Ngf6 6.h3 Bxf3 7.Bxf3 e6 8.O-O Bd6 9.e4 O-O 10.Bg2 Qc7 11.f4 e5 12.f5 Rad8 13.Kh1 Bb4 14.Qe2 Bxd2 15.Bxd2 dxe4 16.dxe4 Nc5 17.Bb4 Qb6 18.Ba3 Rfe8 19.Kh2 Rd4 20.c3 Rd7 21.Rad1 Red8 22.Rxd7 Rxd7 23.g4 h6 1/2-1/2
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