[Event "It \"] [Site "masterchessopen.com Las Vegas (USA)"] [Date "2007.12.28"] [Round "4"] [White "Ibragimov Ildar (USA)"] [Black "Friedel Joshua E (USA)"] [Result "1-0"] [WhiteElo "2598"] [BlackElo "2477"] [ECO "E47"] [Opening "Nimzo-Indian: 4.e3 O-O 5.Bd3"] { Ibragimov Ildar (USA) +5 =3 -0 } 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Bd3 d5 6.a3 Bxc3+ 7.bxc3 c5 8.cxd5 Qxd5 { ? } ( 8...exd5 9.Ne2 Bg4 10.f3 Bh5 11.Nf4 Bg6 12.Be2 Nc6 13.h4 h5 14.O-O Ne7 15.dxc5 Qa5 16.Nxg6 fxg6 17.Rb1 Qxc5 18.c4 dxc4 { 1/2-1/2, Bacrot Etienne 2717 - Vallejo Pons Francisco 2650 , Morelia 20. 2.2006 It (cat.20) } ) 9.Nf3 { ? } 9...b6 ( 9...cxd4 10.exd4 Nbd7 11.c4 Qa5+ 12.Bd2 Qc7 13.O-O e5 14.Nxe5 Nxe5 15.Bf4 Nfg4 16.dxe5 f6 17.Qc2 h6 18.Qe2 fxe5 19.Bg3 Re8 20.Rfe1 Qc5 21.Rad1 Nf6 22.Qc2 Bg4 23.Rc1 e4 24.Bxe4 Nxe4 25.Rxe4 Bf5 26.Rxe8+ Rxe8 27.Qb3 b6 28.h3 Rc8 29.Bf4 { ...1/2-1/2, Kotov Alexander A 2500 - Yanofsky D A 2410 , Groningen 1946 It } ) 10.Qe2 ( 10.c4 Qh5 11.O-O Bb7 12.Be2 Nbd7 13.Ne5 Qg5 14.Bf3 Bxf3 15.Nxf3 Qf5 16.Qe2 Rac8 17.Bb2 cxd4 18.Nxd4 Qc5 19.Rac1 e5 20.Nf5 e4 21.Ng3 Rfe8 22.Bd4 Qg5 23.f3 Nc5 24.Rcd1 exf3 25.Qxf3 Re6 26.Nf5 Nce4 27.h4 Qg6 28.Bxf6 Qxf6 29.Qg4 Rce8 { ...1-0, Korchnoi Viktor 2635 - Luther Thomas 2550 , Ptuj 1995 Zt } ) 10...Bb7 ( 10...cxd4 11.cxd4 Bb7 12.O-O Nbd7 13.Bb2 Rac8 14.Rfc1 h6 15.Bc4 Qf5 16.a4 Rfd8 17.Bb5 Qd5 18.Ba3 Ne4 19.Be7 Re8 20.Bb4 a5 21.Be1 Red8 22.Bc4 Qc6 23.Qb2 Ng5 24.Be2 Qe4 25.h4 Nh7 26.Rxc8 Rxc8 27.Rc1 Rxc1 28.Qxc1 Bc6 29.Qd1 Nhf6 30.Bf1 { ...1-0, Gelfand Boris 2685 - Rozentalis Eduardas 2590 , Tilburg 1992 It (play-off) "Interpolis" } ) 11.O-O ( 11.e4 Qh5 12.h3 cxd4 13.cxd4 Ba6 14.Bg5 Bxd3 15.Qxd3 Nbd7 16.O-O Rfc8 17.Rac1 Qg6 18.Rfe1 h6 19.Bd2 Rxc1 20.Bxc1 Rc8 21.Bd2 Rd8 22.Qe2 Nb8 23.Ne5 Qh5 24.Qc4 Ne8 25.Bb4 Qg5 26.f4 Qf6 27.a4 Nd7 28.Nc6 Ra8 29.f5 exf5 30.e5 Qh4 { ...1-0, Reshevsky Samuel H 2430 - Levin Jacob, New York 1942 Ch USA } ) 11...Nbd7 12.Re1 ( 12.Bb2 Rac8 13.a4 Rfd8 14.Rfd1 c4 15.Bc2 Nf8 16.Ne1 a6 17.f3 b5 18.e4 Qd7 19.g4 Qc7 20.Ng2 Bc6 21.axb5 axb5 22.Ba3 Ra8 23.Qe3 Be8 24.Bb4 Rxa1 25.Rxa1 Qb7 26.g5 N6d7 27.Nf4 Ra8 28.Rd1 Qb6 29.h4 Ng6 30.Ng2 e5 31.h5 exd4 { ...1-0, Milov Vadim 2602 - Mateo Ramon 2391 , Linares 2001 It (open) } ) 12...Ne4 13.Bb2 { +0.18 CAP N } ( 13.c4 Qh5 14.Qc2 f5 15.Be2 Rf6 16.Ne5 Qe8 17.f3 Nxe5 18.dxe5 Rg6 19.fxe4 Bxe4 20.Bd3 Rxg2+ 21.Qxg2 Bxg2 22.Kxg2 Rd8 23.Be2 Qc6+ 24.Bf3 Qa4 25.e4 fxe4 26.Rxe4 Qc2+ 27.Re2 Qxc4 28.a4 Rf8 29.Bb2 Qb3 30.Bc6 Qd3 31.Rae1 Rf4 32.Bc1 Rg4+ { ...0-1, Thorfinnsson Bragi 2215 - Bjarnason Saevar 2265 , Akureyri 1997 Ch Iceland } ) 13...Rac8 14.c4 Qh5 15.a4 a5 16.Rab1 f5 17.Red1 Bc6 18.Qc2 Ndf6 { ?! } ( 18...Rcd8 { !? } 19.Be2 Qf7 20.h3 Rfe8 21.Rd3 cxd4 { } ) 19.Ne5 Qe8 20.Nxc6 Qxc6 21.d5 exd5 22.cxd5 Qd7 { ?! } ( 22...Qe8 { !? } 23.Ba6 Rd8 24.Rd3 Qf7 25.Bc4 { } ) 23.d6 Nxd6 24.Bc4+ Kh8 25.Be5 Rc6 26.Bb5 Nfe8 27.Qd3 { } {#r} 1-0