[Event "It (open)"] [Site "masterchessopen.com Philadelphia (USA)"] [Round "0"] [White "Gulko Boris F (USA)"] [Black "Gruenfeld Yehuda (ISR)"] [Result "1-0"] [WhiteElo "2565"] [BlackElo "2480"] [ECO "E47"] [Opening "Nimzo-Indian: 4.e3 O-O 5.Bd3"] 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Bd3 c5 6.Nf3 d5 7.O-O Nc6 8.a3 Bxc3 9.bxc3 dxc4 10.Bxc4 Qc7 11.Ba2 Rd8 12.Qc2 Na5 13.Qe2 Nd5 14.Bd2 b6 15.Rac1 Bb7 16.Ne5 Nf6 17.f3 Qe7 18.Rfd1 Rac8 19.Be1 cxd4 20.exd4 Nd5 21.c4 Nf4 22.Qe3 Nh5 23.Bb4 Qe8 24.Bxa5 bxa5 25.Rb1 Rc7 26.Qd2 a4 27.Qa5 Re7 28.Nxf7 Rxf7 29.Qxh5 g6 30.Qe5 Qe7 31.c5 Bc8 32.Rb8 Rf5 33.Bxe6+ {#r} 1-0