[Event "It (open) \"] [Site "masterchessopen.com - Moscow (Russia)"] [Date "2005.02.22"] [Round "8"] [White "Tregubov Pavel V (RUS)"] [Black "Efimenko Zahar (UKR)"] [Result "1-0"] [WhiteElo "2583"] [BlackElo "2637"] [ECO "E10"] [Opening "Neo-Indian: Blumenfeld/Benoni"] { Efimenko Zahar (UKR) +0 =0 -1 } 1.d4 Nf6 2.c4 e6 3.Nf3 c5 4.d5 exd5 5.cxd5 d6 6.Nc3 g6 7.Nd2 Bg7 8.e4 O-O 9.Be2 Re8 10.O-O Na6 11.Kh1 Nc7 ( 11...Rb8 12.f3 Nc7 13.a4 b6 14.Nc4 Ba6 15.Bg5 Qd7 16.b3 Nh5 17.Rc1 f6 18.Be3 f5 19.g4 Bxc4 20.bxc4 fxg4 21.fxg4 Nf6 22.Bf3 Qe7 23.Bg5 h6 24.Bh4 g5 25.Be1 Rf8 26.Bg2 Nd7 27.Rxf8+ Rxf8 28.Ne2 Be5 29.Qd3 Ne8 30.Bd2 Qg7 31.Rf1 Rxf1+ 32.Bxf1 Qf7 33.Kg2 Nef6 34.h3 Qg6 35.Nc3 Bxc3 36.Bxc3 Qxe4+ 37.Qxe4 Nxe4 38.Be1 Ne5 39.Be2 Kf7 40.Bf3 Nf6 41.Be2 Ng6 42.Bf1 h5 43.gxh5 Nxh5 44.Kf3 Ne5+ 45.Ke4 Kg6 46.Be2 Nf6+ 47.Ke3 Kf5 48.Bc3 a6 49.Be1 g4 50.hxg4+ Nfxg4+ 51.Kd2 { ...0-1, Portisch Lajos 2625 - Nunn John D M 2565 , London 1982 It (cat.14) } ) 12.a4 b6 ( 12...Rb8 13.f4 a6 14.a5 Bd7 15.Bf3 Nb5 16.e5 dxe5 17.fxe5 Rxe5 18.Nc4 Rf5 19.Ne3 Rf4 20.Ne2 Rh4 21.g3 Re4 22.Bxe4 Nxe4 23.Nf4 Nd4 24.Kg2 Qe7 25.Re1 h5 26.Ra3 Re8 27.Ne2 Bh3+ 28.Kxh3 Ng5+ { 0-1, Ufimtsev Anatoly - Tal Mikhail 2650 , Moscow 1967 It "Central Chess Club" } ) 13.f3 Nd7 { ?/= } ( 13...Rb8 14.Nc4 Ba6 15.Bg5 Qd7 16.b3 Nh5 17.Rc1 f6 18.Be3 f5 19.g4 Bxc4 20.bxc4 fxg4 21.fxg4 Nf6 22.Bf3 Qe7 23.Bg5 h6 24.Bh4 g5 25.Be1 Rf8 26.Bg2 Nd7 27.Rxf8+ Rxf8 28.Ne2 Be5 29.Qd3 Ne8 30.Bd2 Qg7 31.Rf1 Rxf1+ 32.Bxf1 Qf7 33.Kg2 Nef6 34.h3 Qg6 35.Nc3 Bxc3 36.Bxc3 Qxe4+ 37.Qxe4 Nxe4 38.Be1 Ne5 39.Be2 Kf7 40.Bf3 Nf6 41.Be2 Ng6 42.Bf1 h5 43.gxh5 Nxh5 44.Kf3 Ne5+ 45.Ke4 Kg6 46.Be2 Nf6+ 47.Ke3 Kf5 48.Bc3 a6 49.Be1 g4 50.hxg4+ Nfxg4+ 51.Kd2 Ke4 52.Kc3 Ke3 53.Bd1 { ...0-1, Portisch Lajos 2625 - Nunn John D M 2565 , London 1982 It (cat.14) } ) 14.Nb5 { N } ( 14.Nc4 Ne5 ( 14...Qe7 15.Bf4 Ne5 16.Nxe5 Bxe5 { +0.68 CAP } ) 15.Ne3 f5 ( 15...Rb8 16.f4 Nd7 17.e5 dxe5 18.f5 Nf6 19.d6 Na6 20.Ned5 Nxd5 21.Qxd5 gxf5 22.d7 Bxd7 23.Bxa6 Be6 24.Qxd8 Rbxd8 25.Bb5 Re7 26.g3 Rd6 27.Bg5 f6 28.Be3 Bc8 29.Kg1 f4 30.gxf4 Bh6 31.Bc4+ Kh8 32.Rad1 Rdd7 33.Rxd7 Rxd7 34.Rd1 exf4 35.Rxd7 Bxd7 36.Bd2 Kg7 37.Bb5 Be6 38.Ne2 f3 39.Bxh6+ Kxh6 40.Nf4 Bb3 41.h4 Kg7 42.Kf2 Bd1 43.Nd5 Kg6 44.Nc3 Bb3 45.Kxf3 Kf5 46.Bd3+ { 1-0, Korobov Anton 2572 - Oleksienko Mikhailo 2454 , Kharkov 29. 8.2004 Ch Ukraine } ) 16.f4 Nf7 17.exf5 gxf5 18.Bd3 Nh6 19.Qc2 Qf6 20.Bd2 Bd7 21.Rf3 Kh8 22.Raf1 Re7 23.Rh3 Qf7 24.Nc4 Qg6 25.Rg3 Ng4 26.h3 h5 27.Ne3 Nxe3 28.Rxg6 Nxc2 29.Bxc2 Ne8 30.Rg5 Nf6 31.Bxf5 Bxf5 32.Rxf5 Rae8 33.Kh2 Kh7 34.Kg3 a6 35.Kh4 Kg6 36.g4 hxg4 37.hxg4 b5 38.axb5 axb5 39.Rg5+ Kf7 40.Nxb5 Rh8+ 41.Rh5 Nxh5 42.Nxd6+ Kf8 43.gxh5 Bf6+ 44.Kg4 Rg7+ 45.Kf5 Bxb2 46.Rh1 Rd7 47.Ke6 Re7+ 48.Kf5 Rd7 49.Be3 Bd4 50.Bxd4 cxd4 51.Ke5 d3 52.Nf5 d2 53.h6 Kf7 { ...1/2-1/2, Kramnik Vladimir 2809 - Topalov Veselin 2733 , Monaco 2001 It "Melody Amber" (active) } ) ( 14.Ra3 Qe7 15.Nc4 Ba6 16.Bf4 Bxc4 17.Bxc4 a6 18.Qd2 Ne5 19.Be2 Qd7 20.Rfa1 Rab8 21.Bh6 Bh8 22.Nd1 f5 23.Nf2 Nf7 24.Bf4 Bd4 25.Be3 Bxe3 26.Rxe3 b5 27.axb5 Nxb5 28.Bxb5 Qxb5 29.b3 Qb4 30.Qc1 Qd4 31.Qe1 f4 32.Rd3 Qb2 33.Rb1 Qg7 34.Rdd1 Rb5 35.Ra1 Rxb3 36.Rxa6 Reb8 37.Ra7 Qc3 38.Qxc3 { 1/2-1/2, Eljanov Pavel 2629 - Oleksienko Mikhailo 2454 , Kharkov 24. 8.2004 Ch Ukraine } ) ( 14.Qc2 f5 15.Nc4 Ne5 16.Bf4 fxe4 17.fxe4 Qe7 18.Qd2 Nxc4 19.Bxc4 Be5 20.Nb5 Bxf4 21.Rxf4 Nxb5 22.axb5 Bd7 23.Qc3 Qg7 { 1-0, Eljanov Pavel 2571 - Efimenko Zahar 2590 , Moscow 2002 It (open) "Aeroflot" } ) ( 14.f4 Nf6 15.Bf3 Ba6 16.Re1 Qe7 17.Nb3 c4 18.Nd4 Nfxd5 19.Nxd5 Nxd5 20.Nc6 Qe6 21.e5 Nc7 22.Nd4 Qc8 23.Bxa8 dxe5 24.Nb5 Bxb5 25.axb5 Qxa8 26.Qd7 Qd8 27.Qc6 Re6 28.Qxc4 exf4 29.Bxf4 Rxe1+ 30.Rxe1 Ne6 31.b3 h5 32.Bg3 Bd4 33.Qd3 Qd5 34.Re5 Qxe5 35.Bxe5 Bxe5 36.g3 Kg7 37.Kg2 Bd4 38.Qe4 Bf6 39.Qb7 Bd4 40.Qxa7 Kf6 41.Qd7 Be5 42.Qb7 Bc7 43.b4 Ke7 44.Kf3 Ke8 45.Ke4 Ke7 46.Kd5 Kd7 47.Qc6+ Ke7 48.Qc3 h4 49.Kc6 hxg3 50.hxg3 g5 51.Qd3 Bd8 52.Qd7+ Kf8 53.Qb7 Ke8 { ...1-0, Beliavsky Alexander G 2555 - Rogulj Branko 2387 , Tallinn 1977 Match } ) 14...Nxb5 15.Bxb5 Rf8 16.Qe1 a6 17.Bc6 Rb8 18.Nc4 b5 19.axb5 axb5 20.Nxd6 Ne5 21.Nxc8 Qxc8 22.Bf4 Nxc6 23.dxc6 Rb6 24.c7 Bxb2 25.Ra5 Bd4 26.Qg3 Re8 27.Qg5 b4 28.Rxc5 Bxc5 { ?! } ( 28...h6 { !? } 29.Qd5 Bxc5 30.Qxc5 Rb7 { } ) 29.Qxc5 Rb7 30.h3 b3 31.Qc3 { ?! } ( 31.Rc1 { !? } 31...h6 32.Qd5 b2 33.Rb1 { } ) 31...Re7 { ?? } ( { ? } 31...Qd7 32.Rb1 Rc8 33.Qf6 Qe6 { } ) 32.Rd1 { ! } ( 32.Rb1 Rexc7 33.Bxc7 Rxc7 34.Qxb3 { } ) 32...b2 33.Bh6 f6 34.Qc4+ Re6 35.Rd8+ Kf7 36.Rxc8 b1=Q+ 37.Kh2 { +156.50 CAP } {#r} 1-0