[Event "It"] [Site "masterchessopen.com – London (England)"] [Round "9"] [White "Alekhine Alexander A (RUS)"] [Black "Koltanowski George (USA)"] [Result "1-0"] [ECO "C70"] [Opening "Spanish: 4.Ba4"] 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 d6 5.Bxc6+ bxc6 6.d4 exd4 ( { ? } 6...f6 { ? g6, ?g7 } ) 7.Nxd4 Bd7 8.O-O g6 9.Nc3 Bg7 10.Re1 Ne7 11.Bf4 O-O 12.Qd2 c5 13.Nb3 Nc6 { ?! } ( 13...Re8 { !? } ) 14.Bh6 Be6 15.Bxg7 Kxg7 16.Nd5 f6 17.Rad1 Rb8 18.Qc3 Qc8 19.a3 Rf7 20.h3 { ! } 20...Qb7 21.Re3 Qb5 ( 21...Bxd5 22.exd5 Nd4 23.Nxd4 cxd4 24.Rxd4 Qxb2 25.Qd2 { ? } ) 22.Nxc7 { ! } 22...Rxc7 23.Rxd6 Bc4 ( 23...Kf7 24.Rf3 Ke7 25.a4 Qb6 26.Rxe6+ Kxe6 27.Nxc5+ Kd6 28.Qxf6+ Kxc5 29.Rc3+ Kb4 30.Qd6+ { +?? } ) ( 23...Qc4 24.Nxc5 { ! +?? } ) ( 23...Nd8 24.Rf3 Rf7 25.Nxc5 { +?? } ) ( 23...Bf7 24.Rxf6 { ! } 24...Nd4 25.Nxd4 cxd4 26.Qxc7 Kxf6 27.Rf3+ { +?? } ) ( 23...Re8 24.Nxc5 Nd8 25.b4 Nf7 26.Rxe6 { +?? } ) 24.a4 { ! } 24...Qxa4 { ? } 25.Nxc5 Qb5 26.Qxf6+ Kg8 27.Nd7 { ! } 27...Rd8 ( 27...Re8 28.Qc3 { +?? } ) 28.Rf3 Qb4 29.c3 Qb3 30.Ne5 { ! } 30...Rdc8 31.Nxc6 {#r} 1-0