[Event "Memorial M.Chigorin (open)"] [Site "masterchessopen.com – St. Petersburg (Russia)"] [Date "2009.10.19"] [Round "4"] [White "Matsenko Sergei (RUS)"] [Black "Harikrishna P (IND)"] [Result "0-1"] [WhiteElo "2432"] [BlackElo "2679"] [ECO "B90"] [Opening "Sicilian: Najdorf"] 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.g3 e5 7.Nb3 b5 8.Nd5 Nbd7 9.Bg2 Nxd5 10.exd5 a5 11.a4 b4 12.O-O Be7 13.Bd2 O-O 14.c3 bxc3 15.Bxc3 Qb6 16.Ra3 f5 17.Qd2 Bd8 18.Rb1 Qa7 19.Nc1 f4 20.gxf4 Rxf4 21.Nd3 Rg4 22.Kh1 Nb6 23.Qe2 Qf7 24.Bf3 Rh4 25.Rg1 Bf6 26.Rb3 Nxd5 27.Rb5 Be6 28.Rxa5 Rf8 29.Ne1 e4 30.Bg4 Rxg4 31.Rxg4 Bxc3 {#R} 0-1