[Event "Memorial M.Chigorin (open)"] [Site "masterchessopen.com St. Petersburg (Russia)"] [Date "2010.10.28"] [Round "1"] [White "Grachev Boris (RUS)"] [Black "Ambartsumova Karina (RUS)"] [Result "1-0"] [WhiteElo "2668"] [BlackElo "2302"] [ECO "E41"] [Opening "Nimzo-Indian: 4.e3 c5"] 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 c5 5.Ne2 cxd4 6.exd4 d5 7.a3 Be7 8.Nf4 dxc4 9.Bxc4 Nc6 10.Be3 O-O 11.O-O b6 12.h3 Bb7 13.Ba2 Qd7 14.Qe2 Rfe8 15.Rfd1 Bd6 16.d5 exd5 17.Nfxd5 Nxd5 18.Nxd5 Rad8 19.Qh5 Re5 20.Qh4 Ne7 21.Nxe7+ Rxe7 22.Bg5 Qc6 23.Qg4 h5 24.Qf3 Qb5 25.Bd5 Bxd5 26.Rxd5 Qxb2 27.Rad1 f6 28.Bf4 {#r} 1-0