[Event "Ch Russia (1/2 final)"] [Site "masterchessopen.com Krasnodar (Russia)"] [Round "0"] [White "Riabtsev Konstantin (RUS)"] [Black "Khosroev Yakov"] [Result "1-0"] [WhiteElo "2212"] [ECO "B45"] [Opening "Sicilian: Taimanov, 5.Nc3"] 1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 5.Nc3 Qc7 6.Be3 a6 7.Bd3 b5 8.O-O Bb7 9.Kh1 Nf6 10.a3 h5 11.f3 h4 12.Qd2 Nh5 13.Nxc6 Bxc6 14.Rae1 Ng3+ 15.Kg1 Nxf1 16.Bxf1 Bd6 17.f4 g5 18.e5 gxf4 19.exd6 fxe3 20.Qd4 {#r} 1-0