Author: Bernhard Bauer
Date: 01:16:49 02/21/06
Go up one level in this thread
It has always been possible to tweak crafty for a single position. Usualy this doesn't lead to better play. Here some results from available engines. These and similar results can be obtained by everybody. GFruit-4bx: 14/45 04:34 121.029.262 441.278 -0,36 h3h4 Ra5a7 Qf4g3 Be7d6 14/48+ 07:01 187.719.096 445.748 +0,05 Bb1xf5 g6xf5 Qf4g3+ Kg7h7 15/52 11:21 304.760.407 447.513 +0,06 Bb1xf5 g6xf5 Qf4g3+ Kg7h7 16/58 22:11 593.019.021 445.570 +0,38 Bb1xf5 g6xf5 Qf4g3+ Kg7h7 Glaurung: 12/33 00:25 7.443.474 292.256 -0,43 Nf3d2 Be7f6 Nd2xc4 b5xc4 12/34 01:06 19.420.042 293.203 -0,28 Bb1xf5 g6xf5 Qf4g3+ Kg7h7 13/38 02:06 37.665.592 298.194 0,00 Bb1xf5 g6xf5 Qf4g3+ Kg7h7 14/41 03:00 54.003.053 299.652 0,00 Bb1xf5 g6xf5 Qf4g3+ Kg7h7 15/46 06:41 121.180.396 301.643 0,00 Bb1xf5 g6xf5 Qf4g3+ Kg7h7 16/46 13:55 252.761.769 302.754 0,00 Bb1xf5 g6xf5 Qf4g3+ Kg7h7 Rybka v1.0 Beta.w32: 10 00:09 366.145 40.323 -0,85 Nf3g5 Qd8d4 Ng5f7 Qd4xf4 10 00:16 610.113 40.674 -0,57 Bb1xf5 g6xf5 Qf4xf5 Qd8f8 11 00:36 1.304.527 38.368 0,00 Bb1xf5 g6xf5 Nf3e5 Nc4xe5 12 00:56 2.099.358 38.877 0,00 Bb1xf5 g6xf5 Nf3e5 Nc4xe5 13 01:44 3.870.238 38.319 0,00 Bb1xf5 g6xf5 Nf3e5 Nc4xe5 14 03:32 7.952.954 38.420 0,00 Bb1xf5 g6xf5 Nf3e5 Nc4xe5 15 08:14 17.629.689 36.576 0,00 Bb1xf5 g6xf5 Nf3e5 Nc4xe5 Gambitfruit finds Bxb5 at depth 14 in 7:01 Glaurung finds Bxb5 at depth 12 in 1:06 Rybka finds Bxb5 at depth 10 in 0:16 Crafty 20.3 finds Bxb5 at depth 14 in 8:16 on a much faster machine. So crafty has still a long way to go. What if someone would post results from ICSBF? ICSBF is a similar name to CSTAL. I stands for incomplete CS stands for chess system BF for branching factor :-) ICSBF: 15 0:05 314.159 926.535 0,00 Bb1xf5 g6xf5 Qf4g3+ Kg7h7 just for comparison. Bernhard On February 20, 2006 at 19:49:06, Mike Byrne wrote: >http://chessprogramming.org/cccsearch/ccc.php?find_thread=271717 > >Prevously, someone had speculated tha Fischer played Bxf5 due to the strength of >Black's position, i.e., Bxf5 may be the best hope for white to score a half >point. > >Crafty 20.3 agrees with that assessment. > >FEN: [d]3q3r/4b1k1/4P1p1/rpp2p1p/1nn2Q2/5N1P/P4PP1/RBB1R1K1 w - - 0 1 > >Crafty-20.3: > 1 00:00 347 347 +1.29 1.Ng5 > 1 00:00 424 424 +1.29 1.Ng5 > 2 00:00 514 514 +0.99 1.Ng5 Re8 > 2 00:00 160 160 +1.10 1.Ne5 Qd4 2.Qxd4 cxd4 > 2 00:00 994 994 +1.10 1.Ne5 Qd4 2.Qxd4 cxd4 > 3 00:00 1.416 1.416 +1.04 1.Ne5 Nxe5 2.Qxe5+ Kh7 > 3 00:00 936 936 +1.07 1.a3 Qd5 > 3 00:00 3.919 3.919 +1.07 1.a3 Qd5 > 4 00:00 8.773 8.773 -0.01 1.a3 Bf6 2.axb4 Rxa1 > 4 00:00 18.010 900.500 +0.99 1.Ng5 Re8 2.Re2 > 4 00:00 23.324 1.166.200 +0.99 1.Ng5 Re8 2.Re2 > 5 00:00 30.145 1.507.250 +0.74 1.Ng5 Re8 2.Nf7 Qd5 > 5 00:00 76.410 2.547.000 +0.74 1.Ng5 Re8 2.Nf7 Qd5 > 6 00:00 103.133 2.062.660 +0.64 1.Ng5 Nd5 2.Qf3 Re8 > 6 00:00 207.438 2.074.380 +0.64 1.Ng5 Nd5 2.Qf3 Re8 > 7 00:01 254.894 2.317.218 +0.73 1.Ng5 Nd5 2.Qf3 Bxg5 3.Bxg5 Qxg5 4.Qxd5 >Qe7 > 7 00:01 444.349 2.468.605 +0.73 1.Ng5 Nd5 2.Qf3 Bxg5 3.Bxg5 Qxg5 4.Qxd5 >Qe7 > 8 00:01 646.816 2.587.264 +0.78 1.Ng5 Qd4 2.Qxd4+ cxd4 3.Nf7 Rc8 4.Bh6+ >Kg8 5.Rc1 > 8 00:01 1.047.848 2.686.789 +0.78 1.Ng5 Qd4 2.Qxd4+ cxd4 3.Nf7 Rc8 4.Bh6+ >Kg8 5.Rc1 > 9 00:01 1.410.427 2.661.183 +0.59 1.Ng5 Qd4 2.Qxd4+ cxd4 3.Rd1 d3 4.Bxd3 >Rd8 5.Be2 Rxd1+ 6.Bxd1 Rxa2 7.Rxa2 Nxa2 > 9 00:01 2.364.952 2.687.445 +0.59 1.Ng5 Qd4 2.Qxd4+ cxd4 3.Rd1 d3 4.Bxd3 >Rd8 5.Be2 Rxd1+ 6.Bxd1 Rxa2 7.Rxa2 Nxa2 > 10 00:02 3.037.445 2.736.436 +0.42 1.Ng5 Qd4 2.Qxd4+ cxd4 3.Nf7 Re8 4.Bh6+ >Kh7 5.Bf4 d3 6.Kh1 > 10 00:02 5.697.814 2.806.804 +0.42 1.Ng5 Qd4 2.Qxd4+ cxd4 3.Nf7 Re8 4.Bh6+ >Kh7 5.Bf4 d3 6.Kh1 > 11 00:03 7.441.768 2.829.569 +0.51 1.Ng5 Qd4 2.Qxd4+ cxd4 3.Rd1 Re8 4.Rxd4 >Bf6 5.Rd7+ Kg8 6.a3 Bxg5 7.Bxg5 Rxe6 8.Rd8+ Kh7 > 11 00:05 11.832.190 2.320.037 +0.51 1.Ng5 Qd4 2.Qxd4+ cxd4 3.Rd1 Re8 4.Rxd4 >Bf6 5.Rd7+ Kg8 6.a3 Bxg5 7.Bxg5 Rxe6 8.Rd8+ Kh7 > 12 00:07 17.931.093 2.525.506 +0.05 1.Ng5 Qd4 2.Qxd4+ cxd4 3.Bf4 d3 4.Nf7 >Re8 5.Bc7 d2 6.Rd1 Ra6 > 12 00:24 71.045.027 2.960.209 +0.27 1.Nd2 Nxd2 2.Bxd2 Bf6 3.e7 Bxe7 4.Rxe7+ >Qxe7 5.Bc3+ Kh7 6.Bxh8 Kxh8 7.Qh6+ Qh7 8.Qf8+ Qg8 9.Qxc5 Qc4 10.Qxc4 bxc4 > 12 00:27 78.940.398 2.923.718 +0.27 1.Nd2 Nxd2 2.Bxd2 Bf6 3.e7 Bxe7 4.Rxe7+ >Qxe7 5.Bc3+ Kh7 6.Bxh8 Kxh8 7.Qh6+ Qh7 8.Qf8+ Qg8 9.Qxc5 Qc4 10.Qxc4 bxc4 > 13 00:36 107.008.207 2.972.450 -0.25 1.Nd2 Nd5 2.Qg3 Bf6 3.Nxc4 bxc4 4.Rd1 h4 >5.Qf3 Bxa1 6.Rxd5 Qe7 7.Bd2 > 13 00:59 175.082.593 2.967.501 -0.05 1.Ne5 Bd6 2.Qg3 Qf6 3.Nxc4 Bxg3 4.Bb2 >bxc4 5.Bxf6+ Kxf6 6.fxg3 Re8 7.Rc1 Rxe6 8.Rxc4 > 13 02:24 424.406.287 2.947.265 -0.05 1.Ne5 Bd6 2.Qg3 Qf6 3.Nxc4 Bxg3 4.Bb2 >bxc4 5.Bxf6+ Kxf6 6.fxg3 Re8 7.Rc1 Rxe6 8.Rxc4 > 14 02:41 476.601.824 2.960.259 -0.73 1.Ne5 Bd6 2.Qg3 Qf6 3.Bg5 Qxe6 4.f4 Nxe5 >5.fxe5 Re8 6.Bxf5 Bxe5 7.Bxe6 Bxg3 8.Re4 > 14 08:16 1.478.082.312 2.980.004 +0.01 1.Bxf5 gxf5 2.Qg3+ Kh7 3.Ng5+ Bxg5 >4.Bxg5 Qb8 5.Bf4 Qe8 6.Qg5 Nd3 7.Qh6+ Kg8 8.Qg5+ Kh7 > 14 11:53 2.099.664.327 2.944.830 +0.01 1.Bxf5 gxf5 2.Qg3+ Kh7 3.Ng5+ Bxg5 >4.Bxg5 Qb8 5.Bf4 Qe8 6.Qg5 Nd3 7.Qh6+ Kg8 8.Qg5+ Kh7 > 15 14:54 2.621.490,650 2.931 +0.01 1.Bxf5 gxf5 2.Qg3+ Kh7 3.Ng5+ Bxg5 4.Bxg5 >Qb8 5.Bf4 Qe8 6.Qg5 Nd3 7.Qh6+ Kg8 8.Qg5+ Kh7
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