Author: Uri Blass
Date: 07:52:53 09/02/05
The composer asked if there is a program that can solve it White begins and force a draw. [D]3K1R2/7p/2B5/8/8/6pr/6pp/6kq w - - 0 1 Here is some analysis by Fruit Unfortunately I stopped Fruit after it finished depth 21 Note that the first move(1.Ke7) is not good for white and after 1.Ke7 Rh5 Fruit can see winning advantage for black at depth 19(I decided that more than 18 pawns is winning advantage for black) It seems that Fruit is reducing the line Rh5 for black (otherwise it could see at the root at depth 21 what it could see at depth 19 after Ke7 Rh5). Analysis by Fruit 2.1: 1.Kc7 -+ (-12.57) Depth: 1/1 00:00:00 1.Kc7 -+ (-12.57) Depth: 1/1 00:00:00 1.Kc7 -+ (-12.57) Depth: 1/1 00:00:00 1.Kc7 Rh4 -+ (-12.80) Depth: 2/4 00:00:00 1.Kc7 Rh6 2.Kb6 -+ (-12.49) Depth: 3/7 00:00:00 1.Kc7 Rh4 2.Kd6 Rb4 -+ (-12.77) Depth: 4/10 00:00:00 1.Kc7 Rh6 2.Rf7 Re6 3.Kb6 -+ (-12.53) Depth: 5/12 00:00:00 1.Kc7 Rh4 2.Kd6 Rc4 3.Kd5 Rb4 -+ (-12.61) Depth: 6/13 00:00:00 9kN 1.Kc7 Rh6 2.Kb6 Re6 3.Rf3 Re5 4.Rxg3 -+ (-12.38) Depth: 7/14 00:00:00 23kN 1.Kc7 Rh6 2.Kb6 Rh5 3.Be4 Re5 4.Bxh7 Re7 -+ (-12.55) Depth: 8/17 00:00:00 43kN 1.Kc7 Rh6 2.Kb6 Rh5 3.Be4 Rh4 4.Bd5 Rb4+ 5.Kc5 Ra4 -+ (-12.37) Depth: 9/19 00:00:01 79kN 1.Kc7 Rh6 2.Kb6 Rh5 3.Be4 Rh4 4.Bd5 h5 5.Kc5 Ra4 -+ (-12.37) Depth: 10/20 00:00:01 128kN 1.Kc7 Rh6 2.Kb6 Rh5 3.Be4 h6 4.Bd3 Rd5 5.Rf3 Rg5 6.Rf7 -+ (-12.54) Depth: 11/23 00:00:01 269kN 1.Kc7 Rh6 2.Kb6 Rh5 3.Be4 h6 4.Rf3 Re5 5.Bc6 Rg5 6.Rd3 Rg6 -+ (-12.53) Depth: 12/26 00:00:01 663kN 1.Kc7 Rh6 2.Kb6 Rd6 3.Kc5 Rd1 4.Rf3 Rf1 5.Rc3 Kf2 6.Rc2+ Ke1 7.Bxg2 Qg1+ 8.Kd5 h1Q 9.Bxh1 Qxh1+ 10.Kd4 -+ (-12.58) Depth: 13/27 00:00:01 1686kN 1.Kc7 Rh6 2.Rf7 Re6 3.Bd5 Rg6 4.Bc6 h6 5.Kb6 Rg5 6.Bb5 Re5 7.Rf3 Rg5 -+ (-12.67) Depth: 14/29 00:00:04 4767kN 1.Kc7 Rh4 2.Kd6 Rc4 3.Bd5 Rc1 4.Rf3 Rf1 5.Rb3 Kf2 6.Rb2+ Ke3 7.Bxg2 Rd1+ 8.Kc7 Qg1 9.Rb3+ Kf4 10.Rb4+ Ke5 -+ (-12.91) Depth: 15/33 00:00:17 19982kN 1.Kc7 Rh4 2.Rf7 Rd4 3.Bb5 Rd2 4.Kb7 Rf2 5.Rd7 Rf5 6.Bc6 Kf2 7.Rd2+ Ke3 8.Rxg2 Qg1 9.Rb2 Rf7+ 10.Kb6 h1Q 11.Bxh1 Qxh1 -+ (-13.80) Depth: 16/45 00:00:51 61622kN 1.Kc7 Rh4 2.Kd6 Rd4+ 3.Ke5 Rd2 4.Be4 Rf2 5.Ra8 Kf1 6.Ra1+ Ke2 7.Ra2+ Ke3 8.Ra3+ Kd2 9.Ra2+ Kc3 10.Ra7 Qf1 11.Rc7+ Kd2 12.Bxg2 Rf5+ 13.Kd6 Qxg2 -+ (-15.51) Depth: 17/55 00:02:29 178906kN 1.Ke7 Rh4 2.Rf5 Rb4 3.Kf6 Rb6 4.Kg5 Rxc6 5.Kg4 Rg6+ 6.Kh4 Rg8 7.Kh3 Rg7 8.Kh4 Rg6 9.Rf7 h6 -+ (-15.38) Depth: 17/55 00:03:08 226156kN 1.Ke7 Rh6 2.Kd7 Rh4 3.Rf5 Rd4+ 4.Ke8 Rd1 5.Ke7 Rf1 6.Rb5 Re1+ 7.Kd7 Kf2 8.Rf5+ Ke3 9.Rf3+ Kd2 10.Ra3 g1Q 11.Bxh1 Qxh1 12.Kd6 -+ (-15.59) Depth: 18/58 00:05:40 414160kN 1.Rf3 Rh4 2.Ke7 Rd4 3.Kf6 Rd6+ 4.Kf5 Rxc6 5.Kg4 Rg6+ 6.Kh3 Rg7 7.Rf8 h6 8.Rf6 Rg8 9.Kh4 Rg5 10.Kh3 h5 -+ (-15.36) Depth: 18/58 00:06:49 502043kN 1.Rf3 Rh4 2.Ke7 Rd4 3.Kf6 Rd2 4.Kg7 Rf2 5.Ra3 Rc2 6.Rf3 Rxc6 7.Kxh7 Rc2 8.Kg6 Rf2 9.Rc3 Kf1 10.Rc1+ Ke2 11.Rc2+ Ke3 -+ (-16.37) Depth: 19/71 00:09:48 720500kN 1.Rf3 Rh4 2.Ke7 Rd4 3.Kf6 Rd2 4.Kg7 Rf2 5.Ra3 Rc2 6.Rf3 Rxc6 7.Kxh7 Rc2 8.Kg6 Rf2 9.Rb3 Kf1 10.Rb1+ Ke2 11.Rb2+ Kf3 12.Rb3+ Kg4 -+ (-16.46) Depth: 20/78 00:22:18 1615057kN 1.Rf3 Rh4 2.Ke7 Rd4 3.Ke6 Rd2 4.Bb7 Rf2 5.Re3 Kf1 6.Ba6+ Re2 7.Rxe2 g1Q 8.Rxh2+ Ke1 9.Rxh1 Qxh1 10.Bd3 g2 11.Bf5 Qh6+ 12.Kd5 Qg5 13.Ke6 g1Q 14.Bc2 Qb6+ 15.Kd7 -+ (-18.34) Depth: 21/86 00:53:07 3797981kN 1.Ke7 Rh4 2.Kd6 Rd4+ 3.Ke5 Rd2 4.Ke4 Rf2 5.Bb5 Rxf8 6.Ke3 Rf4 7.Ke2 Rb4 8.Ba6 Rb3 9.Bc4 Rb2+ 10.Ke3 Rb4 11.Ba6 Re4+ 12.Kf3 Re6 -+ (-17.78) Depth: 21/86 01:10:58 755875kN (, 02.09.2005) New game, 5R2/4K2p/2B5/7r/8/6p1/6pp/6kq w - - 0 1 Analysis by Fruit 2.1: 2.Kd6 -+ (-12.43) Depth: 1/3 00:00:00 2.Kd6 Ra5 -+ (-12.76) Depth: 2/6 00:00:00 2.Kd6 Ra5 3.Rf7 -+ (-12.44) Depth: 3/8 00:00:00 2.Kd6 Ra5 3.Bd5 Ra4 -+ (-12.61) Depth: 4/10 00:00:00 2.Kd6 Ra5 3.Bd5 Ra6+ 4.Ke5 Rb6 -+ (-12.26) Depth: 5/11 00:00:00 2.Kd6 Ra5 3.Bd5 Ra4 4.Ke5 Rb4 -+ (-12.26) Depth: 6/14 00:00:00 4kN 2.Kd6 Ra5 3.Bd5 Ra6+ 4.Kc5 Ra4 5.Rf3 Rg4 -+ (-12.22) Depth: 7/16 00:00:00 16kN 2.Kd6 Ra5 3.Bd5 Ra4 4.Ke5 h5 5.Rb8 Kf1 6.Rb1+ Ke2 7.Rxh1 g1Q -+ (-12.23) Depth: 8/18 00:00:00 40kN 2.Kd6 Ra5 3.Bd5 Ra1 4.Rf7 h5 5.Ke5 Re1+ 6.Be4 h4 -+ (-12.25) Depth: 9/19 00:00:01 94kN 2.Kd6 Ra5 3.Bd5 Ra1 4.Rf3 h5 5.Ke5 h4 6.Ke4 Re1+ 7.Re3 -+ (-12.27) Depth: 10/20 00:00:01 172kN 2.Kd6 Ra5 3.Bd5 Ra1 4.Rf3 h5 5.Ke5 h4 6.Kf4 Rd1 7.Ke4 Re1+ 8.Re3 -+ (-12.27) Depth: 11/22 00:00:01 257kN 2.Kd6 Ra5 3.Bd5 Ra1 4.Rf3 Rf1 5.Ra3 Rb1 6.Rf3 h5 7.Ke5 h4 -+ (-12.42) Depth: 12/29 00:00:01 911kN 2.Kd6 Ra5 3.Bd5 Ra1 4.Rf3 Rf1 5.Rb3 Kf2 6.Rb2+ Ke3 7.Bxg2 Rd1+ 8.Kc7 Qg1 9.Rb3+ Kf4 10.Rb4+ Ke5 -+ (-12.91) Depth: 13/30 00:00:03 3528kN 2.Kd6 Ra5 3.Bd5 Ra1 4.Rf3 Rf1 5.Ra3 Kf2 6.Ra2+ Ke3 7.Bxg2 Rd1+ 8.Kc7 Rc1+ 9.Kb8 Qg1 10.Ra3+ Kf4 11.Ra4+ Ke5 -+ (-13.32) Depth: 14/33 00:00:10 12223kN 2.Kd6 Ra5 3.Bd5 Ra1 4.Rf4 Rf1 5.Ra4 Kf2 6.Ra2+ Ke3 7.Rxg2 Qg1 8.Rb2 h1Q 9.Rb3+ Kf4 10.Bxh1 Qxh1 -+ (-13.26) Depth: 15/40 00:00:24 29146kN 2.Kd6 Ra5 3.Bd5 Ra1 4.Rf4 Rf1 5.Ra4 Kf2 6.Ra2+ Ke3 7.Bxg2 Rd1+ 8.Kc7 Rc1+ 9.Kb8 Qd1 10.Ra3+ Kf4 11.Ra6 h1Q 12.Bxh1 Qxh1 -+ (-14.18) Depth: 16/41 00:00:45 53805kN 2.Kd6 Ra5 3.Bd5 Ra1 4.Rf4 Rf1 5.Rb4 Kf2 6.Rb2+ Ke3 7.Bxg2 Rd1+ 8.Kc7 Qe1 9.Rb5 Qc3+ 10.Kb7 Qg7+ 11.Kb6 Rd6+ 12.Ka5 Qa1+ 13.Kb4 Qb2+ 14.Kc4 Rd4+ 15.Kc5 Qxg2 -+ (-16.23) Depth: 17/65 00:02:44 186583kN 2.Kd6 Ra5 3.Bd5 Ra1 4.Kd7 Rf1 5.Ra8 Rd1 6.Rf8 Rxd5+ 7.Kc6 Rd4 8.Kb6 Rd2 9.Kc6 Rf2 10.Ra8 Rf6+ 11.Kd5 Kf2 -+ (-16.54) Depth: 18/65 00:07:41 538363kN 2.Kd6 Ra5 3.Bd5 Ra1 4.Kd7 Rf1 5.Ra8 Kf2 6.Ra2+ Ke3 7.Bxg2 Rd1+ 8.Ke8 Qe1 9.Kf7 Qb4 10.Ra7 Qf4+ 11.Ke7 Qd6+ 12.Kf7 Qg6+ 13.Ke7 Qg7+ 14.Ke6 Qxa7 -+ (-18.11) Depth: 19/71 00:19:00 1336065kN (, 02.09.2005)
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