[Event "It (cat.12)"] [Site "masterchessopen.com Pulvermuehle (Germany)"] [Date "2006.02.28"] [Round "4"] [White "Braun Arik (GER)"] [Black "Prusikin Michael (GER)"] [Result "0-1"] [WhiteElo "2525"] [BlackElo "2560"] [ECO "E20"] [Opening "Nimzo-Indian: 4.f3 d5"] { } 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.f3 d5 5.a3 Bxc3+ 6.bxc3 c5 7.cxd5 Nxd5 8.dxc5 Qa5 9.e4 Ne7 { ? } ( 9...Nf6 10.Be3 O-O 11.Qb3 Nfd7 12.Qb4 Qc7 13.Rd1 Nc6 14.Qa4 Nce5 15.Qd4 Nc6 16.Qa4 Nce5 17.Qd4 Nc6 { 1/2-1/2, Timman Jan H 2630 - Karpov Anatoly 2730 , Tilburg 1991 It (cat.17) } ) 10.Be3 O-O 11.Qb3 { ? } 11...Bd7 { +0.44 CAP } ( 11...Qc7 12.a4 Nec6 13.f4 Nd7 14.Nf3 Na5 15.Qa3 b6 16.cxb6 axb6 17.Nd2 Nf6 18.Be2 Ba6 19.Qb4 Bxe2 20.Kxe2 Rfd8 21.Rhd1 Ng4 22.Bxb6 Qxf4 23.h3 Qg3 24.hxg4 Qxg2+ 25.Bf2 Nc6 26.Qb5 Qxg4+ 27.Ke1 Ne7 28.Qe2 Qf4 29.Nc4 Rxd1+ 30.Rxd1 h5 31.Nb6 { ...1-0, Sakaev Konstantin 2649 - Emms John M 2430 , Leningrad 1990 It } ) 12.Kf2 { N } ( 12.Nh3 Na6 13.Be2 Rfc8 14.O-O Nxc5 15.Qb4 Qc7 16.Rad1 Be8 17.c4 b6 18.Qb2 e5 19.f4 f6 20.fxe5 fxe5 21.Bg4 Rd8 22.Rxd8 Rxd8 23.Ng5 Qd6 24.Qf2 Ng6 25.Bxc5 Qxc5 26.Be6+ Kh8 27.Qxc5 bxc5 28.Bd5 Rb8 29.Ne6 Rb2 30.Nxc5 Nf4 31.Nd3 Rxg2+ { ...1-0, Crouch Colin S 2395 - Lalic Susan 2375 , Isle of Man 1994 It (open) } ) ( 12.Qb4 Qc7 13.a4 Nbc6 14.Qa3 f5 15.Rd1 fxe4 16.fxe4 Qe5 17.Bd3 Nd5 18.Bd2 Nf4 19.Bxf4 Qxf4 20.Nf3 Ne5 21.Be2 Rad8 22.Rf1 Ng4 23.g3 Qxe4 24.Rd4 Qb1+ 25.Kd2 Qg6 26.h4 Bc6 27.Bd3 Be4 28.c4 Rxd4 29.Nxd4 Qh6+ 30.Kc3 Rxf1 31.Bxe4 Qe3+ { ...0-1, Ballon Guenther Jan 2195 - Conquest Stuart 2505 , Isle of Man 1994 It (open) } ) ( 12.Rb1 Nbc6 13.Bb5 Rad8 14.Ne2 e5 15.O-O a6 16.Bc4 Bc8 17.f4 exf4 18.Bd4 Ng6 19.Nxf4 Nxf4 20.Rxf4 Nxd4 21.cxd4 Rxd4 22.Bxf7+ Kh8 23.Rc1 Qc7 24.Qf3 Rd7 25.Rf1 Qxc5+ 26.Kh1 Rdd8 27.Ba2 Rxf4 28.Qxf4 Qxa3 29.Qf7 b5 30.Bb1 Qc5 31.e5 Qc4 { ...1-0, Pitkanen Juhani - Haapasalo Matti, corr. 1979 } ) 12...Nbc6 13.Ne2 f5 { ?! } ( 13...Qc7 { !? } 14.Nf4 Rad8 15.Kg1 Na5 { } ) 14.Rd1 Be8 15.Kg1 { ?! } ( 15.Nd4 { !? } 15...fxe4 16.Bc4 Nxd4 17.cxd4 { } ) 15...fxe4 16.fxe4 Kh8 17.Ng3 Ne5 { ? } ( 17...Rd8 18.Be2 Rxd1+ 19.Bxd1 Nd8 { } ) 18.Qxb7 Ba4 19.Rc1 Ng4 20.Qxe7 { ? } ( 20.Bd4 Qd8 21.Be2 Bc6 22.Qa6 { } ) 20...Nxe3 21.Nh5 { ? } ( { ? } 21.h4 Ng4 22.Nh5 Rf7 23.Qg5 { } ) 21...Qxc3 22.h3 { ?! } ( 22.h4 { !? } 22...Rxf1+ 23.Rxf1 Nxf1 24.Kxf1 { } ) 22...Rxf1+ 23.Rxf1 Nxf1 24.Kxf1 Qd4 25.Ke2 Qxe4+ 26.Kf2 Qf5+ { } {#R} 0-1