Author: John Merlino
Date: 10:17:15 05/28/04
Go up one level in this thread
On May 28, 2004 at 09:30:26, Rob Basham wrote: >[D]rnbr2k1/ppp2ppp/6n1/8/2BN2q1/B1P5/P4PPP/R2QR1K1 w - - 0 1 > >White plays Bxf7+...and goes on to win! > >My old Novag takes about 6 minutes to find it... CM_SKR on an AMD 2500 says: Time Depth Score Positions Moves 0:00 1/3 0.75 2430 1.Rb1 Qxd1 2.Rbxd1 Bg4 0:00 1/3 0.90 4654 1.Qxg4 Bxg4 2.h3 Bd7 3.Rad1 0:00 1/4 0.59 6654 1.Qxg4 Bxg4 2.h3 Bd7 3.Rab1 b6 0:00 1/4 0.75 7502 1.Rb1 Qxd1 2.Rbxd1 Bg4 0:00 1/4 1.07 11570 1.Qb3 Qf4 2.Rad1 Nd7 3.Qc2 0:00 1/5 0.80 28286 1.Qb3 Qf4 2.Rad1 Nd7 3.Nf3 0:00 1/6 0.94 134008 1.Qb3 Qf4 2.Rad1 Nd7 3.Nf3 Qf6 4.Bb5 0:02 1/7 1.31 455209 1.Qb3 Nc6 2.Bxf7+ Kh8 3.Bd5 Nxd4 4.cxd4 Qxd4 5.Rad1 Qf4 6.Bxb7 Bxb7 7.Qxb7 0:05 1/8 1.23 1244252 1.Qb3 Nc6 2.Bxf7+ Kh8 3.Qd5 Bd7 4.h3 Qf4 5.Bxg6 hxg6 6.Nxc6 Bxc6 0:16 1/9 1.34 4019030 1.Qb3 Nf4 2.Bxf7+ Kh8 3.Bd5 Nc6 4.Bf3 Nxd4 5.cxd4 Qg6 6.Rad1 Bg4 7.Bxg4 Qxg4 8.Qxb7 0:55 1/10 1.46 14179874 1.Qb3 Nc6 2.Bxf7+ Kh8 3.Rad1 Nf4 4.g3 Nh3+ 5.Kf1 Ng5 6.Bd5 Qh5 7.Nxc6 bxc6 8.Bg2 Ba6+ 9.Kg1 Rxd1 10.Rxd1 2:31 1/11 1.24 39857640 1.Qb3 Nc6 2.Bxf7+ Kh8 3.Bd5 Nxd4 4.cxd4 Qxd4 5.Bb2 Qc5 6.Rac1 Qa5 7.Qf3 Bf5 8.Bxb7 Rab8 After forcing 1.Bxf7+ Kxf7 2.Qb3+ Kf6 3.h3 Qd7, The King says: Time Depth Score Positions Moves 0:00 1/3 -0.52 1799 4.Qc4 Ne5 5.Rxe5 Kxe5 0:00 1/3 -0.25 2161 4.Rad1 Qd5 5.c4 Qxd4 6.Rxd4 Rxd4 0:00 1/3 -0.18 3194 4.Re3 Nf4 5.Be7+ Qxe7 6.Rxe7 Kxe7 0:00 1/4 -0.76 7883 4.Re3 Qd5 5.Rf3+ Kg5 6.Rg3+ Kh6 7.Bc1+ Kh5 0:00 1/4 -0.25 8302 4.Rad1 Qd5 5.c4 Qxd4 6.Rxd4 Rxd4 0:00 1/4 -0.11 12918 4.Re6+ Qxe6 5.Nxe6 Bxe6 6.Qxb7 Nd7 7.Qxc7 0:00 1/5 0.04 31928 4.Re6+ Qxe6 5.Nxe6 Bxe6 6.Qxb7 Nd7 7.Qf3+ Bf5 8.Rd1 0:00 1/6 0.09 69384 4.Re6+ Qxe6 5.Nxe6 Bxe6 6.Qxb7 Nd7 7.Re1 c5 8.Qa6 0:00 1/6 0.27 136098 4.c4 Kf7 5.Rad1 Qxd4 6.Rxd4 Rxd4 7.Qf3+ Nf4 8.Re7+ Kf6 9.Rxc7 0:01 1/7 0.55 239873 4.c4 Qxd4 5.Bb2 Nc6 6.Bxd4+ Rxd4 7.Qg3 Nf4 0:02 1/8 0.22 652687 4.c4 Qxd4 5.Bb2 Nc6 6.Bxd4+ Rxd4 7.Rad1 Nge5 8.Qg3 Rxc4 0:03 1/8 0.90 991961 4.Re3 Nf4 5.Rae1 c5 6.Bxc5 Nc6 7.Re4 g5 8.Nxc6 Qxc6 0:10 1/9 1.73 2725224 4.Re3 Ne5 5.Rae1 Nbc6 6.f4 Kg6 7.fxe5 Kh6 8.e6 0:21 1/10 1.95 6026593 4.Re3 Ne5 5.Rae1 Nbc6 6.f4 Kg6 7.fxe5 Kh6 8.e6 Qd5 9.Qxd5 Rxd5 10.Nxc6 bxc6 0:57 1/11 2.23 16790646 4.Re3 Ne5 5.Rae1 Nbc6 6.f4 Nc4 7.Qxc4 Qd5 8.Qe2 Bf5 9.Nxf5 Qxf5 So 1.Bxf7+ might indeed be the best move. I think it might take some lengthy analysis from the initial position to find it.... jm
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