[Event "It (cat.17)"] [Site "masterchessopen.com Wijk aan Zee (Netherlands)"] [Round "12"] [White "Tiviakov Sergei (NED)"] [Black "Piket Jeroen (NED)"] [Result "1-0"] [WhiteElo "2615"] [BlackElo "2580"] [ECO "B54"] [Opening "Sicilian: Open, 2...d6, 4...Nf6"] 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bg5 e6 7.Qd2 a6 8.O-O-O Bd7 9.f4 h6 10.Bh4 Rc8 11.Nf3 Qa5 12.Kb1 b5 13.e5 b4 14.exf6 bxc3 15.fxg7 Rb8 { ? } 16.b3 { ? } ( 16.gxh8=Q { ?? } 16...Rxb2+ 17.Kc1 Rb1+ 18.Kxb1 Qb4+ 19.Kc1 Qb2# { # } ) 16...cxd2 { ?! } ( 16...Nb4 17.gxf8=Q+ Rxf8 18.Qxc3 Rc8 ( 18...Qxa2+ 19.Kc1 Rc8 20.Bc4 d5 21.Qxb4 { +?? } ) 19.Bc4 d5 20.Ne5 { +?? } ) ( 16...Bxg7 17.Qxd6 Rb7 18.Ne5 Bxe5 19.fxe5 { ± } ) 17.gxh8=Q Nb4 18.a3 { ! +?? } ( 18.Qb2 { ? } 18...Bg7 19.Ne5 { ? } ( 19.c3 Bxc3 20.Qxc3 Qxa2# { # } ) 19...dxe5 20.a3 Nd5 ) ( 18.a4 { ?! } 18...Nxc2 19.Kxc2 Rxb3 ) ( 18.Rxd2 { !? } 18...e5 ( 18...Qxa2+ 19.Kc1 e5 20.Kd1 { +?? } ) 19.a4 ( 19.c3 Nxa2 { ? } ) ( 19.c4 Nxa2 { ? } ) ( 19.Kc1 Nxa2+ 20.Kd1 Nc3+ 21.Ke1 Qa1+ 22.Kf2 Ne4+ 23.Ke2 ( 23.Ke3 exf4+ ) ( 23.Kg1 Nxd2 24.Nxd2 Qd4+ 25.Bf2 Qxd2 ) 23...Nc3+ { = } ) 19...Nxc2 ( 19...Bxa4 20.Bc4 ) ( 19...Bf5 20.Bc4 ) 20.Kxc2 { ! } ( 20.Rxc2 Rxb3+ 21.Kc1 { ? } ( 21.Rb2 { ?? } 21...Bf5+ ) 21...Qb4 22.Nd2 Ra3 23.Kd1 Bg4+ 24.Nf3 ( 24.Ke1 Ra1+ 25.Kf2 Qd4+ 26.Kg3 Qxf4# ) 24...Qb1+ 25.Kd2 ( 25.Rc1 Qb3+ ) 25...Qb4+ 26.Ke2 Qe4+ 27.Kf2 Qxc2+ 28.Kg3 Bxf3 ) ) 18...Nd5 ( 18...Qxa3 19.Qa1 Nxc2 20.Qxa3 Nxa3+ 21.Ka2 ) ( 18...Nxc2 19.Kxc2 Rxb3 ( 19...e5 20.Bc4 ( 20.Nxe5 { !? } ) ( 20.Rxd2 { !? } ) ( 20.Nxd2 { !? } ) 20...Bf5+ 21.Kb2 ) ( 19...Qxa3 20.Qb2 ( 20.Bc4 { !? } ) ( 20.Nxd2 { !? } ) 20...Rc8+ 21.Kb1 ) 20.Kxb3 ( 20.Bc4 { !? } 20...Rxa3 21.Nxd2 Ba4+ 22.Nb3 ) 20...Qa4+ ( 20...Ba4+ 21.Ka2 ( 21.Kb2 Bxd1 ( 21...Qb6+ 22.Ka1 Bxd1 23.Bb5+ ) 22.Bc4 ( 22.Qd4 Bxf3 23.gxf3 Bg7 24.Qxg7 d1=Q ) 22...Bxf3 ( 22...d5 23.Rxd1 ) 23.gxf3 d5 24.Bb3 Qxa3+ 25.Kc2 ) 21...Qd5+ ( 21...Bxd1 22.Bb5+ Qxb5 23.Rxd1 Qc4+ 24.Kb2 ) 22.Ka1 Bxd1 23.Bb5+ ) ( 20...d5 21.Qb2 ) 21.Kb2 Qxd1 22.Qc3 { ! } ( 22.Bb5 { ?! } 22...Qxh1 23.Bxd7+ Kxd7 24.Nxd2 Qxg2 { ? } ) ( 22.Bc4 Qxh1 23.Nxd2 Qxg2 { ? } ) ( 22.Bd3 Qxh1 23.Nxd2 Qxg2 { ? } ) 22...Bg7 23.Ne5 Qh5 ( 23...dxe5 24.Bb5 Qxh1 25.Qc8# ) 24.Qxd2 dxe5 ( 24...Qxh4 25.Qxd6 ) 25.Bf2 exf4+ 26.Ka2 ) 19.Bf6 { ! } ( 19.Rxd2 { !? } 19...Nc3+ 20.Kb2 d5 21.Be7 Na4+ 22.Kc1 Kxe7 23.bxa4 ) 19...e5 ( 19...Qxa3 20.Rxd2 { !? } ( 20.Nxd2 ) ( 20.Bc4 ) ) 20.Bxe5 Bf5 21.Bc4 Ne3 ( 21...Qxa3 22.Rxd2 Rxb3+ 23.Bxb3 Qxb3+ 24.Bb2 ) 22.Bxd6 Kd7 ( 22...Bxc2+ 23.Ka2 ) 23.Ne5+ Kxd6 24.Qf6+ Kc7 ( 24...Be6 25.Nxf7+ Kc7 26.Qxe6 ) ( 24...Kc5 25.Qc6+ Kd4 26.Nf3+ Kc3 27.Qf6+ ) 25.Qc6+ Kd8 26.Nxf7+ { } 1-0