[Event "Euwe Simultan"] [Site "Sao Paulo"] [Date "2008.08.25"] [Round "4"] [White "Everaldo Matsuura"] [Black "Oswaldo Zambrana"] [Result "1-0"] [WhiteElo "2464"] [BlackElo "2458"] [ECO "B90"] [Opening "Sicilian: Najdorf"] 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.f4 e5 7.Nf3 Nbd7 8.a4 Be7 9.Bd3 O-O 10.O-O exf4 11.Kh1 Nc5 12.Bxf4 Be6 13.Nd4 Bg4 14.Be2 Bxe2 15.Qxe2 Qb6 16.Nf5 Rae8 17.Qf3 Ne6 18.Be3 Qxb2 19.Nd5 Nxd5 20.exd5 Bf6 21.dxe6 fxe6 22.Nxd6 Be5 23.Qxb7 Qxb7 24.Nxb7 Bxa1 25.Rxa1 Rc8 26.Rc1 Rc3 27.Bd4 Rc4 28.c3 Rxa4 29.Nc5 Rc4 30.Nxe6 Ra8 31.Kg1 a5 32.Kf2 Re8 33.Nxg7 Re4 34.Ra1 Rexd4 35.cxd4 Kxg7 36.Ke3 Rc2 37.Rxa5 Rxg2 38.Rh5 Kg6 39.Rh3 Ra2 40.Ke4 h5 41.Rg3+ Kf6 42.h3 Ra5 43.Rc3 Ke6 44.h4 Ra1 45.Rc6+ Kf7 46.Rc5 Re1+ 47.Kd3 Rh1 48.Rxh5 Kg6 49.Re5 Rxh4 50.Kc4 Kf6 51.Re1 Rh7 52.Kc5 Re7 53.Rxe7 {#r} 1-0