[Event "Memorial M.Chigorin (open)"] [Site "masterchessopen.com St. Petersburg (Russia)"] [Date "2011.10.14"] [Round "1"] [White "Gladyszev Oleg (RUS)"] [Black "Kostyuchenko Vladimir (RUS)"] [Result "1-0"] [WhiteElo "2463"] [BlackElo "2107"] [ECO "D26"] [Opening "QGA: 4.e3 e6 5.Bxc4"] 1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.e3 e6 5.Bxc4 c5 6.O-O a6 7.dxc5 Qxd1 8.Rxd1 Bxc5 9.Be2 Nbd7 10.Nfd2 Ke7 11.Nb3 Bb4 12.a3 Bd6 13.N1d2 Ne5 14.f4 Nc6 15.Nc4 Bc7 16.Bf3 Nd5 17.Bd2 b6 18.g3 Rd8 19.e4 Nf6 20.e5 Nd5 21.Ne3 Bb7 22.Nxd5+ exd5 23.Rac1 Bb8 24.Be3 d4 25.Bf2 Na5 26.Bxb7 {#r} 1-0