[Event "Tournament (Cand.to Masters)"] [Site "masterchessopen.com – Moscow (Russia)"] [Round "0"] [White "Chistiakov Alexander N (RUS)"] [Black "Kogan Efim"] [Result "1-0"] [ECO "D23"] [Opening "QGA: Mannheim, 4...Nbd7"] 1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.Qa4+ Nbd7 5.Qxc4 Nb6 6.Qc2 Bg4 7.Nc3 c6 8.e4 Bxf3 9.gxf3 Qxd4 10.Be3 Qd7 11.a4 e5 12.a5 Nc8 13.h4 Bb4 14.Qb3 Qd6 15.Ra4 c5 16.Bb5+ Nd7 17.Ke2 a6 18.Rd1 axb5 19.Rxd6 bxa4 20.Re6+ fxe6 21.Qxe6+ Ne7 22.Nd5 O-O-O 23.Nxe7+ Kb8 24.a6 Rhe8 25.Qd6+ Ka7 26.Nd5 b6 27.Qc6 {#r} 1-0