[Event "BDCL Div Three Mutual Circle vs Mercia"] [Site "Kings Heath"] [Date "2016.02.09"] [Round "?"] [White "Chris Cox"] [Black "Richard Leaper"] [Result "0-1"] [ECO "D02"] [EventDate "2016.02.09"] 1.d4 Nf6 2.Bf4 e6 3.Nf3 Nc6 $6 ( { Typical main line of the London system is } 3...c5 4.e3 b6 5.Nbd2 Bb7 6.c3 Be7 7.h3 O-O 8.Bd3 cxd4 9.exd4 d6 10.O-O $14 ) 4.e3 d5 5.c3 Be7 6.Bd3 O-O 7.Nbd2 Bd7 $2 8.Ne5 Nxe5 9.dxe5 Ne8 10.Nf3 ( { Testing Black's defensive options would have been } 10.Qh5 f5 11.g4 g6 12.Qh6 fxg4 13.Rg1 Ng7 14.Rxg4 Nf5 15.Rxg6+ hxg6 16.Qxg6+ Kh8 17.Qh5+ Kg8 18.O-O-O $18 ) 10...c5 11.h4 h6 $6 12.g4 Nc7 $2 ( { Better was } 12...Qa5 ) 13.Kd2 $2 ( 13.Bb1 $1 Ne8 14.Bxh6 f5 15.gxf5 gxh6 16.Rg1+ Kh8 17.Rg6 Rg8 18.Rxh6+ Kg7 19.Rg6+ Kf7 20.f6 Rxg6 21.Bxg6+ Kxg6 22.Qc2+ { is mate in 6 } ) 13...b5 14.Qg1 $2 ( { Best is still } 14.Bb1 $16 ) 14...c4 15.Bc2 b4 16.Bxh6 $2 ( { Preparing more for the sac would be better } 16.Nd4 f6 17.Qg3 fxe5 18.Bxe5 Nb5 19.Nxb5 Bxb5 20.g5 h5 21.f4 $14 ) 16...bxc3+ 17.bxc3 gxh6 ( { Hiarcs says } 17...Nb5 18.Bg5 Qa5 19.Bh7+ Kxh7 20.Qb1+ Kg8 21.Bxe7 Nxc3 22.Qb4 Qxb4 23.Bxb4 Ne4+ 24.Ke1 Rfb8 $17 ) 18.Qg3 Re8 $2 19.Qf4 Bf8 $2 ( { Stronger was } 19...Kg7 $17 ) 20.h5 $2 ( { Good was } 20.g5 h5 21.g6 fxg6 22.Rag1 Re7 23.Rxg6+ Rg7 24.Rhg1 Qe7 25.Ng5 { threatening Nh7!! } ) 20...Nb5 21.g5 Qa5 22.Bh7+ $4 ( { Winning was } 22.Rac1 $3 Qxc3+ 23.Ke2 Bg7 24.gxh6 Bh8 25.Bh7+ Kf8 26.Rxc3 Nxc3+ 27.Kd2 $18 ) 22...Kh8 $2 ( 22...Kxh7 23.Qxf7+ Kh8 $19 { and White has no threats } ) 23.Rac1 $4 ( { Won for White was } 23.Qxf7 Qxc3+ 24.Ke2 Bg7 25.gxh6 Qb2+ 26.Kf1 Rg8 ( 26...Qxa1+ $4 27.Kg2 Qxh1+ 28.Kxh1 { and White has mate in 6 } ) 27.Re1 Nd6 28.Qxd7 $18 ) 23...Nxc3 24.Rxc3 Qxa2+ $2 ( { Necessary was } 24...f5 25.exf6 Bb4 26.Ne5 Qxa2+ 27.Kd1 Ba4+ 28.Bc2 Bxc3 29.Nf7+ Kg8 30.Nxh6+ Kh8 $10 { and White has at best perpetual } ) 25.Bc2 Bb4 26.Qf6+ Kg8 27.gxh6 Bxc3+ 28.Kxc3 $4 ( { White has mate in 5 } 28.Kd1 Qa1+ 29.Ke2 Qf1+ ( 29...Bxe5 30.h7+ Kf8 31.h8=Q# ) 30.Rxf1 Kf8 31.h7 Re7 32.h8=Q# ) 28...Qa5+ 29.Kb2 $4 ( 29.Kd4 $10 { and Black has at best perpetual } ) 29...Rab8+ { now Black has mate in 8 } 30.Kc1 Qa1+ 31.Kd2 c3+ 32.Ke2 Bb5+ 33.Bd3 Bxd3+ 34.Kxd3 Qa6+ 35.Kc2 Qe2+ 36.Kc1 Qb2+ $2 ( 36...Rb1+ 37.Kxb1 Qb2# ) 37.Kd1 c2+ 38.Ke2 c1=Q+ 39.Nd2 Qbxd2+ 40.Kf3 Qxh1+ 41.Kg3 Qg1+ 42.Kh3 Qdxf2 43.h7+ Kxh7 { it is mate in 3 } 0-1