Author: Hans Havermann
Date: 20:04:45 09/05/00
Go up one level in this thread
On September 03, 2000 at 14:59:52, Enrique Irazoqui wrote: >[D]5qrk/p1p1b1rp/4P2Q/1p6/5P2/8/P4P1P/B5RK w - b6 0 31 >Is there a program that can see a forced mate in this position? The main line is >in the PGN score below, but 31... Bd6 offers more resistance. Most programs have >trouble finding the first move, f3, let alone the mate line. Screamer seems to have trouble seeing anything *but* f3. :) PLY NODES TIME SCORE PV __________________________________________________ 5/00 45422 0.601 ++ 5/00 50480 0.693 +0.56 f3 c5 f5 Bg5 Qxg5 6/00 66913 0.898 -- 6/00 85916 1.139 -0.67 f3 c5 Rxg7 Rxg7 f5 c4 Qxg7+ Qxg7 Bxg7+ Kxg7 f4 7/00 309454 4.860 ++ f3 7/00 385424 5.818 +0.48 f3 c5 f5 c4 Bc3 Bf6 Bxf6 8/00 537135 7.477 -- 8/00 862867 11.221 -0.17 f3 c5 f5 Bd6 Rg5 Bf4 Bxg7+ Qxg7 Rxg7 Bxh6 8/01 2043111 25.656 +0.00 Rg3 Bd6 Bf6 Be7 Ba1 9/00 2676548 33.541 +0.00 Rg3 Bd6 Bf6 Be7 Ba1 9/01 3226824 40.735 ++ f3 9/01 4614273 58.331 +1.07 f3 Bc5 Rg4 Be3 a4 Bxf4 Qxf4 Qxf4 Bxg7+ Rxg7 Rxf4 10/00 9654661 116.752 +1.37 f3 a5 f5 Bc5 Rg3 Be3 Bxg7+ Rxg7 Qxe3 Qxf5 Rxg7 Kxg7 e7 11/00 16279700 196.135 ++ f3 11/00 22687014 270.254 +2.80 f3 Bd6 f5 c5 Rg4 Be7 Rg3 Bh4 Qxh4 Qe8 Bxg7+ Rxg7 Qf6 12/00 48477252 565.074 +2.65 f3 c6 f5 Ba3 Rg4 Bc1 Bxg7+ Rxg7 Qxc1 Qxf5 Rf4 Qg6 Rf8+ Rg8 Rxg8+ Kxg8 Qxc6 13/00 85047814 992.188 ++ f3 13/00 149579619 1747.199 +4.37 f3 Bd6 f5 c6 Rg4 Bf4 Qxf4 Qd8 Bxg7+ Rxg7 Qe5 Qc7 Qd4 b4 Rxg7 Qxg7 Qxb4 14/00 165164469 1909.527 -- 14/00 361201884 4105.128 +4.23 f3 Bd6 f5 a6 Rg4 Bf4 Qxf4 Qd8 Qc1 Qd3 Rxg7 Rxg7 Bxg7+ Kxg7 Qxc7+ Kf6 Qf7+ Ke5 Kg2 15/00 529594317 6080.628 ++ f3 15/00 1045312709 11959.203 +5.06 f3 Bd6 f5 c5 Rg4 Bf4 Qxf4 Qd8 Bxg7+ Rxg7 Qe5 Qc7 Qc3 b4 e7 bxc3 e8=Q+ Rg8 Qxg8 16/00 1422466612 16345.313 ++ f3 16/00 2132616943 24350.344 +6.05 f3 Bd6 f5 c5 Rg4 Bf4 Qxf4 Qd8 Qc1 c4 Bxg7+ Rxg7 Qc3 Qc7 e7 Qxe7 f6 Qc7 fxg7+ Kg8 17/00 3176652486 36361.626 ++ f3 17/00 9667169860 105829.652 +9.05 f3 Bd6 f5 c5 Rg4 Bf4 Qxf4 Qd8 Qc1 c4 Bxg7+ Rxg7 Qa1 Qf8 Rxg7 c3 Rxa7 Qc8 e7 Kg8
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