Author: John Merlino
Date: 16:08:28 11/12/02
Go up one level in this thread
On November 12, 2002 at 16:40:49, ALI MIRAFZALI wrote: >[D]4r1k1/pp3p2/1q1p2P1/6Q1/2p2Pn1/P5R1/1P2b1P1/5R1K b >In the above Position 1....Be2xf1 is incorrect.How long does it take your >program to avoid making this move? Chessmaster 9000, on the soon-to-be-reallocated P4-2.66 (named "Larry's Nemesis" :-), needs 13 seconds to choose a move other than Bxf1: Time Depth Score Positions Moves 0:00 1/3 -4.50 1898 1...Bxf1 2.gxf7+ Kxf7 3.Qh5+ Ke7 4.Rxg4 Qxb2 0:00 1/4 -4.40 10434 1...Bxf1 2.Rxg4 Qxb2 3.gxf7+ Kxf7 4.Qg6+ Ke7 0:00 1/5 -3.43 29977 1...Bxf1 2.Qxg4 Qxb2 3.gxf7+ Kxf7 4.Qg6+ Kf8 5.Qxd6+ Re7 0:00 1/6 -2.92 192097 1...Bxf1 2.Qxg4 Bd3 3.gxf7+ Kxf7 4.Qg7+ Ke6 5.b3 Qf2 6.Rf3 Qh4+ 7.Kg1 Rh8 0:01 1/7 -2.89 359581 1...Bxf1 2.Qxg4 Bd3 3.gxf7+ Kxf7 4.Qg7+ Ke6 5.b3 Qf2 6.Rf3 Qh4+ 7.Kg1 Qe1+ 8.Kh2 Be4 0:03 1/8 -2.80 978627 1...Bxf1 2.Qxg4 Bd3 3.gxf7+ Kxf7 4.Qg7+ Ke6 5.f5+ Bxf5 6.Rf3 c3 7.Qh6+ Kd7 8.Rxf5 Qxb2 9.Rf7+ Kc6 0:09 1/9 0.00 2349942 1...Bxf1 2.Qxg4 Bd3 3.gxf7+ Kxf7 4.Qd7+ Re7 5.Rg7+ Kxg7 6.Qxe7+ Kg8 7.Qe8+ Kg7 8.Qe7+ 0:13 1/9 -1.31 3436998 1...Qxb2 2.Rxg4 Bxf1 3.Qh5 Kf8 4.g7+ Ke7 5.g8=Q Rxg8 6.Rxg8 Bd3 7.Qh4+ Kd7 8.Qe1 Qxa3 9.Qe8+ Kc7 10.Qxf7+ Kb6 1:10 2/10 -0.98 16953974 1...Qxb2 2.Rxg4 Bxg4 3.Qxg4 Qf6 4.Qd7 Qe7 5.gxf7+ Kxf7 6.Qf5+ Kg7 7.Kg1 Qe3+ 8.Rf2 c3 >[D]1qr2rk1/1b2bpp1/pp2pn1p/1N1nN3/2BP4/P5R1/1P2QPPP/2B2RK1 b >In the above diagram 1....a6xb5 is incorrect. Same Question. CM9000 needs less than one second to see that axb5 is not winning, but it does not find a move (Kh8) until 49 seconds. Later, however, after 1:48, it finds the interesting Rxc4! It sticks with this move until exactly 5:00, when it goes back to Kh8: Time Depth Score Positions Moves 0:00 1/3 -1.47 764 1...Rxc4 2.Qxc4 axb5 3.Qxb5 0:00 1/3 -1.66 1372 1...axb5 2.Bxb5 g5 3.f4 0:00 1/4 -1.49 4354 1...axb5 2.Bxh6 bxc4 3.Rxg7+ Kh8 4.Nxf7+ Rxf7 5.Rxf7 0:00 1/5 -0.48 16502 1...axb5 2.Bxh6 Nf4 3.Rxg7+ Kh8 4.Qe3 bxc4 5.Qxf4 0:00 1/6 -0.52 59247 1...axb5 2.Bxh6 Ne8 3.Bxb5 Bh4 4.Rg4 0:00 1/7 -0.05 132355 1...axb5 2.Bxh6 Ne8 3.Bxg7 Nxg7 4.Rxg7+ Kxg7 5.Qg4+ Kh8 6.Qh5+ Kg8 7.Qg4+ Bg5 8.Qxg5+ Kh7 9.Bxb5 0:02 1/8 0.00 473907 1...axb5 2.Bxh6 Ne8 3.Bxg7 Nxg7 4.Rxg7+ Kxg7 5.Qg4+ Kh8 6.Qh5+ Kg8 7.Qg4+ Bg5 8.Qxg5+ Kh8 9.Ng6+ fxg6 10.Qh6+ Kg8 11.Qxg6+ Kh8 12.Qh6+ Kg8 13.Qg6+ 0:08 1/9 0.00 1488753 1...axb5 2.Bxh6 Ne8 3.Bxg7 Nxg7 4.Rxg7+ Kxg7 5.Qg4+ Kh8 6.Qh5+ Kg8 7.Qg4+ Bg5 8.Qxg5+ Kh8 9.Ng6+ fxg6 10.Qh6+ Kg8 11.Qxg6+ Kh8 12.Qh6+ Kg8 13.Qg6+ 0:18 1/10 0.20 3628817 1...axb5 2.Bxh6 Ne8 3.Rxg7+ Nxg7 4.Qg4 Bf6 5.Nd7 Kh7 6.Bxg7 Bxg7 7.Bd3+ Kg8 8.Nxb8 Rxb8 9.Bxb5 0:49 1/10 0.17 9702830 1...Kh8 2.Nc3 Nxc3 3.bxc3 Bd6 4.Bd3 Bxe5 5.dxe5 Nd7 6.Re1 Rxc3 1:21 2/11 0.37 16784051 1...Kh8 2.Nc3 Nxc3 3.bxc3 Bd6 4.Bd3 b5 5.c4 bxc4 6.Bxc4 Qc7 7.Rc3 1:48 2/11 0.14 22585915 1...Rxc4 2.Bxh6 Ne8 3.Qxc4 axb5 4.Qd3 Bd6 5.Re1 Qd8 6.Qxb5 Qh4 3:20 3/12 0.29 42963416 1...Rxc4 2.Bxh6 Ne8 3.Qxc4 axb5 4.Qxb5 Bd6 5.Qe2 Ndf6 6.Rd1 Ne4 7.Rg4 Bxe5 8.dxe5 Qxe5 5:00 3/12 0.26 68047174 1...Kh8 2.Nc3 Bd6 3.Nxd5 exd5 4.Bxa6 Bxa6 5.Qxa6 Bxe5 6.dxe5 Qxe5 7.Qxb6 Rc2 8.Rf3 Ng4 9.Bf4 Qxb2 jm
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