[Event "It (open)"] [Site "masterchessopen.com Biel (Switzerland)"] [Round "7"] [White "Kuzmin Alexey (RUS)"] [Black "Dvoirys Semen I (RUS)"] [Result "1-0"] [WhiteElo "2539"] [BlackElo "2615"] [ECO "D82"] [Opening "Gruenfeld: 4.Bf4 Bg7 5.e3"] { Dvoirys Semen I (RUS) +1 =2 -1 } 1.d4 { 1 } 1...Nf6 2.c4 g6 3.Nc3 d5 4.Bf4 Bg7 5.e3 c5 6.dxc5 Qa5 7.Rc1 dxc4 8.Bxc4 O-O 9.Ne2 Qxc5 10.Qb3 { = } 10...Qa5 ( 10...Nc6 11.Nb5 Qh5 12.Ng3 ( 12.Nc7 Qa5+ 13.Qc3 Qxc3+ 14.Nxc3 Rb8 15.O-O Nh5 16.Bg5 h6 17.Bh4 g5 18.Bg3 Nxg3 19.hxg3 Be5 20.N7b5 a6 21.Na3 b5 22.Bd5 Nb4 23.Rfd1 Bxc3 24.bxc3 Nxd5 25.Rxd5 Be6 26.Re5 Rfc8 27.c4 b4 28.Rxe6 fxe6 29.Nb1 b3 30.axb3 { ...0-1, Karr Jean-Philipp 2376 - Nijboer Friso 2553 , France 2003 Ch France (team) 2003 } ) 12...Qh4 13.Nc7 e5 14.Bh6 Bxh6 15.Nxa8 Ng4 16.Nc7 Nd4 17.Qa3 Nf5 18.Nd5 Ngxe3 19.Nxe3 Bxe3 20.Bxf7+ Kxf7 21.Qb3+ Kf6 22.fxe3 Nxg3 23.Rc4 Qh5 24.Qd3 Be6 25.Rg1 Bxc4 26.Qxc4 Qxh2 { 0-1, Piskov Yury 2500 - Dvoirys Semen I 2515 , Podolsk 1992 Ch Russia (team) } ) 11.O-O Nc6 ( 11...Nbd7 12.a3 Nb6 13.Bc7 Qc5 14.Na4 Nxa4 15.Qxa4 Qg5 16.Ng3 Ne8 17.Bf4 Qf6 18.Ne4 Qb6 19.b4 Bf5 20.Nc5 Nd6 21.Bd5 Bb2 22.Rcd1 Rad8 23.Qb3 Bg7 24.Bxd6 Rxd6 25.Bxb7 Rfd8 26.Be4 Bc8 27.h3 h5 28.Bf3 Kf8 29.Rxd6 Rxd6 30.Rc1 Rd8 31.a4 { ...1-0, Piket Jeroen 2649 - Leko Peter 2739 , Monaco 2001 It "Melody Amber" (blindfold) } ) ( 11...Na6 12.a3 Nc5 13.Qa2 Ne6 14.Bg3 a6 15.Rfd1 b5 16.b4 Qb6 17.Nd5 Nxd5 18.Bxd5 Bb7 19.Bb3 Rac8 20.Bh4 Rxc1 21.Rxc1 Qd6 22.Nc3 Rc8 23.Rd1 Qe5 24.Nd5 Bxd5 25.Bxd5 Qh5 26.Bb3 Qxh4 27.Bxe6 Rf8 28.Bd5 Qf6 29.Rc1 Qb2 30.Bxf7+ Kh8 31.Rc2 { ...1/2-1/2, Dinstuhl Volkmar 2335 - Engsner Joakim 2235 , Gothenburg 1994 It } ) 12.h3 ( 12.Rfd1 Nh5 13.a3 Nxf4 14.Nxf4 e6 15.Be2 Rd8 16.Nd3 Bd7 17.Ne4 Qc7 18.Nec5 Rab8 19.Qa2 Be8 20.b4 Qe7 21.Bf3 Ne5 22.Nxe5 Rxd1+ 23.Rxd1 Bxe5 24.g3 b6 25.Nd3 Bf6 26.Nf4 Rc8 27.Ne2 Ba4 28.Rd2 a5 29.bxa5 bxa5 30.Kg2 h5 31.h4 Kg7 { ...1/2-1/2, Kraidman Yair 2470 - Schmidt Wlodzimierz 2500 , Nice 1974 Olympiad } ) 12...a6 { N } ( 12...Ne5 13.Nd5 Nxd5 14.Bxd5 Qb6 ( 14...e6 15.Be4 Bd7 16.Qxb7 Rab8 17.Qc7 Qxc7 18.Rxc7 Bb5 19.Re1 Bd3 20.Bb7 Bf6 21.Nd4 Bd8 22.Rec1 f6 23.Bc8 Bxc7 24.Bxe6+ Kh8 25.Rxc7 g5 26.Bxe5 fxe5 27.Nc6 Rxb2 28.Nxe5 Rfxf2 29.Rc8+ Kg7 30.Rc7+ Kh8 31.Rc8+ Kg7 32.Rc7+ { ...1/2-1/2, Riazantsev Alexander 2538 - Najer Evgeniy 2585 , Linares 2003 It (open) } ) 15.Rfd1 Nc6 16.Nc3 Qxb3 17.Bxb3 e5 18.Bh2 Bf5 19.g4 Bc8 20.Rd6 Rd8 21.Ne4 Bd7 22.Nc5 Bc8 23.Rxd8+ Nxd8 24.Rd1 Nc6 25.Rd5 Kf8 26.Nd7+ Ke7 27.Nxe5 Be6 28.Nxc6+ bxc6 29.Rd3 Bxb2 30.Bxe6 Kxe6 31.Rd6+ Ke7 32.Rxc6 { ...1-0, Schaefer Markus 2400 - Soltau Achim, DDR 1986 corr. } ) 13.Rfd1 b5 14.Bd5 Bb7 15.Ng3 Rac8 { ?! } ( 15...e6 { !? } 16.Bf3 Rfd8 17.a4 Rxd1+ { } ) 16.Nge4 Nxe4 17.Nxe4 { ! } ( 17.Bxe4 { ? } 17...Rfd8 18.a4 Bxc3 19.Rxc3 { } ) 17...e6 { ?! } ( 17...Qb6 { !? } 18.Bxf7+ Rxf7 19.Qe6 Bxb2 { } ) 18.Bxe6 fxe6 19.Qxe6+ { ! } ( 19.Nc5 { ? } 19...Ba8 20.Nxe6 Qa4 21.Qxa4 { } ) 19...Kh8 20.Nd6 Nd8 21.Qe7 Rxc1 22.Rxc1 Qxa2 { ?! } ( 22...Qd2 { !? } 23.Rc7 Qxb2 24.Nxb7 Nxb7 { } ) 23.Be5 Qg8 24.Nxb7 Nxb7 { ?! } ( 24...Qf7 { !? } 25.Qxf7 Nxf7 26.Bxg7+ Kxg7 { } ) 25.Rc7 Rf7 26.Qxf7 Bxe5 27.Qxg8+ Kxg8 28.Rxb7 { } {#r} 1-0