[Event "Ch Moscow Garnizon"] [Site "masterchessopen.com Moscow (Russia)"] [Round "0"] [White "Estrin Yakov (RUS)"] [Black "Sumkin"] [Result "1-0"] [ECO "B90"] [Opening "Sicilian: Najdorf"] 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Be2 Qc7 7.Nd5 Nxd5 8.exd5 Qa5+ 9.c3 Qxd5 10.O-O e6 11.Bf3 Qc5 12.Qa4+ Bd7 13.Qb3 d5 14.Qxb7 Qa7 15.Bxd5 exd5 16.Re1+ Be7 17.Qxd5 Kf8 18.Be3 Bf6 19.Nb3 Be6 20.Bc5+ {#r} 1-0