[Event "Memorial A.Petrov"] [Site "masterchessopen.com St. Petersburg (Russia)"] [Round "1"] [White "Sirotkina Nina (RUS)"] [Black "Krogius Nikolai V (RUS)"] [Result "1/2-1/2"] [WhiteElo "2295"] [BlackElo "2470"] [ECO "E32"] [Opening "Nimzo-Indian: Classical, 4...d6"] 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qc2 d6 5.Bg5 Nbd7 6.Nf3 O-O 7.e3 b6 8.Be2 Bb7 9.Nd2 c5 10.O-O h6 11.Bh4 cxd4 12.exd4 e5 13.Bf3 Qb8 14.a3 Bxc3 15.Qxc3 Bxf3 16.Nxf3 Ne4 17.Qd3 Qb7 {#d} 1/2-1/2