Author: Steven J. Brann
Date: 15:47:43 12/12/03
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On December 12, 2003 at 18:12:16, ALI MIRAFZALI wrote: >In this simple position Crafty 19.03 fails to see the draw score.Compare >Chessmaster 9000 superior analysis posted after crafty.Results for some other >programs are also of interest here:(the challege is to show 0.00 score) >[D]2k5/1R2P1K1/2P5/8/8/8/8/4r3 b >Analysis by Crafty 19.03: >crafty-19,03 WB2 5 MB: >D9 35:01 6.13 69. ... Rg1+ 70. Kf7 Rf1+ 71. Ke6 Re1+ 72. Kd6 Re6+ 73. Kc5 >Re5+ 74. Kd4 Re4+ 75. Kd5 Re5+ 76. Kc4 Re4+ 77. Kd3 Re1 >D10 35:01 6.00 69. ... Rg1+ 70. Kf7 Rf1+ 71. Ke6 Re1+ 72. Kd6 Re6+ 73. Kc5 >Re5+ 74. Kd4 Re4+ 75. Kd3 Re3+ 76. Kc4 Re4+ 77. Kb5 Re5+ 78. Kb4 Re6 >D11 35:01 6.00 69. ... Rg1+ 70. Kf7 Rf1+ 71. Ke6 Re1+ 72. Kd6 Re6+ 73. Kc5 >Re5+ 74. Kd4 Re4+ 75. Kc3 Rc4+ 76. Kd3 Rxc6 77. e8=Q+ Kxb7 78. Qd7+ Rc7 79. Qb5+ >Kc8 80. Qe8+ Kb7 81. Ke4 >D12 35:03 5.93 69. ... Rg1+ 70. Kf7 Rf1+ 71. Ke6 Re1+ 72. Kd6 Re6+ 73. Kc5 >Re5+ 74. Kd4 Re4+ 75. Kc3 Re3+ 76. Kc4 Re4+ 77. Kb5 Re5+ 78. Kb4 Re4+ 79. Kb3 >Re3+ 80. Kc2 Re4 >D13 35:05 5.83 69. ... Rg1+ 70. Kf7 Rf1+ 71. Ke6 Re1+ 72. Kd6 Re6+ 73. Kc5 >Re5+ 74. Kd4 Re4+ 75. Kc3 Re3+ 76. Kc4 Re4+ 77. Kb5 Re5+ 78. Kb4 Re4+ 79. Kb3 >Re3+ 80. Ka4 Re4+ 81. Ka5 Re3 >D14 35:06 5.89 69. ... Rg1+ 70. Kf7 Rf1+ 71. Ke6 Re1+ 72. Kd6 Re6+ 73. Kc5 >Re5+ 74. Kd4 Re4+ 75. Kc3 Re3+ 76. Kc4 Re4+ 77. Kb5 Re5+ 78. Kb4 Re4+ 79. Kb3 >Re3+ 80. Ka4 Re2 81. Rd7 Re1 >D15 35:08 5.83 69. ... Rg1+ 70. Kf7 Rf1+ 71. Ke6 Re1+ 72. Kd6 Re6+ 73. Kc5 >Re5+ 74. Kd4 Re4+ 75. Kc3 Re3+ 76. Kc4 Re4+ 77. Kb5 Re5+ 78. Kb4 Re4+ 79. Kb3 >Re3+ 80. Ka4 Re4+ 81. Ka5 Re5+ 82. Kb6 Rb5+ 83. Ka7 Re5 >D16 35:09 5.43 69. ... Rg1+!! >D16 35:09 5.44 69. ... Rg1+ 70. Kf7 Rf1+ 71. Ke6 Re1+ 72. Kd6 Re6+ 73. Kc5 >Re5+ 74. Kd4 Re4+ 75. Kc3 Re3+ 76. Kc4 Re4+ 77. Kb5 Re5+ 78. Kb4 Re4+ 79. Kb3 >Re3+ 80. Ka4 Re4+ 81. Ka5 Re5+ 82. Kb6 Rb5+ 83. Ka7 Re5 >D17 35:11 5.70 69. ... Rg1+ 70. Kf7 Rf1+ 71. Ke6 Re1+ 72. Kd6 Re6+ 73. Kc5 >Re5+ 74. Kd4 Re4+ 75. Kc3 Re3+ 76. Kc4 Re4+ 77. Kb5 Re5+ 78. Kb4 Re4+ 79. Kb3 >Re3+ 80. Ka4 Re4+ 81. Ka3 Re3+ 82. Kb2 Re2+ 83. Kc1 Rc2+ 84. Kd1 Rc1+ 85. Ke2 >Rxc6 86. e8=Q+ Kxb7 >D18 35:13 5.71 69. ... Rg1+ 70. Kf7 Rf1+ 71. Ke6 Re1+ 72. Kd6 Re6+ 73. Kc5 >Re5+ 74. Kd4 Re4+ 75. Kc3 Re3+ 76. Kc4 Re4+ 77. Kb5 Re5+ 78. Kb4 Re4+ 79. Kb3 >Re3+ 80. Ka4 Re4+ 81. Ka3 Re3+ 82. Kb2 Re2+ 83. Kc1 Rc2+ 84. Kd1 Rc1+ 85. Ke2 >Rxc6 86. Rb8+ Kxb8 87. e8=Q+ >D19 35:18 5.33 69. ... Rg1+ 70. Kf7 Rf1+ 71. Ke6 Re1+ 72. Kd6 Re6+ 73. Kc5 >Re5+ 74. Kd4 Re4+ 75. Kc3 Re3+ 76. Kc4 Re4+ 77. Kb5 Re5+ 78. Kb4 Re4+ 79. Kb3 >Re3+ 80. Ka4 Re4+ 81. Ka3 Re3+ 82. Kb2 Re2+ 83. Kc1 Re1+ 84. Kd2 Re2+ 85. Kd1 >Rd2+ <HT> >D20 35:33 5.70 69. ... Rg1+ 70. Kf7 Rf1+ 71. Ke6 Re1+ 72. Kd6 Re6+ 73. Kc5 >Re5+ 74. Kd4 Re4+ 75. Kc3 Re6 76. Kd3 Re3+ 77. Kc4 Re4+ 78. Kb3 Re3+ 79. Ka4 >Re4+ 80. Ka3 Re3+ 81. Kb2 Re2+ 82. Kc1 Re6 83. Kd2 Rd6+ 84. Ke3 Re6+ 85. Kf4 >Rf6+ 86. Kg5 Rxc6 87. e8=Q+ Kxb7 >D21 37:05 5.70 69. ... Rg1+ 70. Kf7 Rf1+ 71. Ke6 Re1+ 72. Kd6 Re6+ 73. Kc5 >Re5+ 74. Kd4 Re4+ 75. Kc3 Re6 76. Kb4 Re4+ 77. Kb5 Re5+ 78. Kc4 Re4+ 79. Kb3 >Re3+ 80. Ka4 Re4+ 81. Ka3 Re3+ 82. Kb2 Re2+ 83. Kc1 Re6 84. Kd2 Rd6+ 85. Ke3 >Re6+ 86. Kf4 Rf6+ 87. Kg5 Rxc6 88. e8=Q+ Kxb7 >D22 43:12 5.30 69. ... Rg1+!! >D22 47:50 5.31 69. ... Rg1+ 70. Kf7 Rf1+ 71. Ke6 Re1+ 72. Kd6 Re6+ 73. Kc5 >Re5+ 74. Kd4 Re4+ 75. Kc3 Re6 76. Kb4 Re4+ 77. Kb5 Re5+ 78. Kc4 Re4+ 79. Kb3 >Re3+ 80. Ka4 Re4+ 81. Ka3 Re3+ 82. Kb2 Re2+ 83. Kc1 Re6 84. Kd2 Rd6+ 85. Ke3 >Re6+ 86. Kf4 Rf6+ 87. Kg5 Rxc6 88. e8=Q+ Kxb7 > > >Analysis by Chessmaster 9000 (default personality): >Time Depth Score Positions Moves >0:06 12/16 1.76 1538791 1...Rg1+ 2.Kf7 Rf1+ 3.Ke6 Re1+ > 4.Kd5 Rd1+ 5.Ke5 Re1+ 6.Kd6 Rd1+ > 7.Kc5 Rc1+ 8.Kd4 Rd1+ 9.Kc4 Rc1+ > 10.Kd3 Rd1+ 11.Ke2 Re1+ 12.Kf3 > Re3+ 13.Kf4 Re4+ 14.Kg3 Re3+ 15.Kg4 > Re4+ 16.Kg5 Re5+ >0:09 13/17 1.70 2272253 1...Rg1+ 2.Kf7 Rf1+ 3.Ke6 Re1+ > 4.Kd5 Rd1+ 5.Ke5 Re1+ 6.Kd6 Rd1+ > 7.Kc5 Rc1+ 8.Kd4 Rd1+ 9.Kc4 Rc1+ > 10.Kd3 Rd1+ 11.Ke2 Re1+ 12.Kd2 > Rd1+ 13.Kc3 Rc1+ 14.Kb2 Rb1+ 15.Ka3 > Ra1+ 16.Kb4 Rb1+ >0:13 14/18 1.62 3552443 1...Rg1+ 2.Kf7 Rf1+ 3.Ke6 Re1+ > 4.Kd5 Rd1+ 5.Ke5 Re1+ 6.Kd6 Rd1+ > 7.Kc5 Rc1+ 8.Kd4 Rd1+ 9.Kc4 Rc1+ > 10.Kd3 Rd1+ 11.Ke2 Re1+ 12.Kd2 > Rd1+ 13.Kc3 Rc1+ 14.Kb2 Rb1+ 15.Ka3 > Ra1+ 16.Kb4 Rb1+ >0:22 15/19 1.60 6010672 1...Rg1+ 2.Kf7 Rf1+ 3.Ke6 Re1+ > 4.Kd5 Rd1+ 5.Ke5 Re1+ 6.Kd6 Rd1+ > 7.Kc5 Rc1+ 8.Kd4 Rd1+ 9.Kc4 Rc1+ > 10.Kd3 Rd1+ 11.Ke2 Re1+ 12.Kd2 > Rd1+ 13.Kc3 Rc1+ 14.Kb2 Rb1+ 15.Kc2 > Rc1+ 16.Kb3 Rb1+ >0:39 16/20 1.40 10732282 1...Rg1+ 2.Kf7 Rf1+ 3.Ke6 Re1+ > 4.Kd5 Rd1+ 5.Ke5 Re1+ 6.Kd6 Rd1+ > 7.Kc5 Rc1+ 8.Kd4 Rd1+ 9.Kc4 Rc1+ > 10.Kd3 Rd1+ 11.Ke2 Re1+ 12.Kd2 > Rd1+ 13.Kc3 Rc1+ 14.Kb4 Rb1+ 15.Ka5 > Ra1+ 16.Kb5 Rb1+ >1:32 17/21 1.36 25171972 1...Rg1+ 2.Kf7 Rf1+ 3.Ke6 Re1+ > 4.Kd5 Rd1+ 5.Ke5 Re1+ 6.Kd6 Rd1+ > 7.Kc5 Rc1+ 8.Kb4 Rb1+ 9.Ka5 Ra1+ > 10.Kb5 Rb1+ 11.Kc4 Rc1+ 12.Kb3 > Rb1+ 13.Kc3 Rc1+ 14.Kd2 Rd1+ 15.Ke2 > Re1+ 16.Kf3 Re3+ >2:49 18/22 1.30 45249244 1...Rg1+ 2.Kf7 Rf1+ 3.Ke6 Re1+ > 4.Kd5 Rd1+ 5.Ke5 Re1+ 6.Kd6 Rd1+ > 7.Kc5 Rc1+ 8.Kd4 Rd1+ 9.Kc4 Rc1+ > 10.Kd3 Rd1+ 11.Ke2 Re1+ 12.Kf3 > Re3+ 13.Kf4 Re4+ 14.Kg3 Re3+ 15.Kg4 > Re4+ 16.Kg5 Re5+ >5:56 19/23 1.19 94578871 1...Rg1+ 2.Kf7 Rf1+ 3.Ke6 Re1+ > 4.Kd5 Rd1+ 5.Ke5 Re1+ 6.Kd6 Rd1+ > 7.Kc5 Rc1+ 8.Kd4 Rd1+ 9.Kc4 Rc1+ > 10.Kd3 Rd1+ 11.Ke2 Re1+ 12.Kf3 > Re3+ 13.Kf4 Re4+ 14.Kg3 Re3+ 15.Kg4 > Re4+ 16.Kg5 Re5+ >9:00 20/24 0.00 146403790 1...Rg1+ 2.Kf7 Rf1+ 3.Ke6 Re1+ > 4.Kd5 Rd1+ 5.Ke5 Rd5+ 6.Ke6 Rd6+ > 7.Kf5 Rd5+ 8.Kf4 Rd4+ 9.Kf3 Rd3+ > 10.Ke2 Rd2+ 11.Ke1 Rd1+ 12.Kxd1 >Please indicate your result. When CM9000 shows a 0.00 score, a draw is usually a sure bet. However on a P4 3.0G machine, the default personality with selective search = 16 doesn't quite get there. Time Depth Score Positions Moves 0:00 1/9 2.10 151840 1...Rg1+ 2.Kf7 Rf1+ 3.Ke6 Rf6+ 4.Kd5 Rd6+ 5.Kc5 Rxc6+ 6.Kd5 Kxb7 7.e8=Q Rc7 8.Qb5+ Kc8 9.Ke4 0:01 1/10 2.07 458491 1...Rg1+ 2.Kf7 Rf1+ 3.Ke6 Rf6+ 4.Kd5 Rf5+ 5.Kd6 Rd5+ 6.Ke6 Rd6+ 7.Ke5 Rd5+ 8.Ke4 Re5+ 9.Kd3 Rd5+ 10.Kc4 Rc5+ 11.Kd4 0:01 1/11 1.88 705855 1...Rg1+ 2.Kf7 Rf1+ 3.Ke6 Re1+ 4.Kf5 Re5+ 5.Kg6 Re6+ 6.Kh5 Rh6+ 7.Kg5 Rh5+ 8.Kg6 Rh6+ 9.Kf5 Rf6+ 10.Ke4 Re6+ 11.Kf3 Rf6+ 12.Kg4 Re6 0:01 1/12 1.87 745464 1...Rg1+ 2.Kf7 Rf1+ 3.Ke6 Re1+ 4.Kd5 Re5+ 5.Kd4 Re4+ 6.Kc5 Re5+ 7.Kb4 Re4+ 8.Kb5 Re5+ 9.Kc4 Re4+ 10.Kd3 Re3+ 11.Kd2 Re2+ 12.Kc3 Re6 0:01 2/13 2.01 793967 1...Rg1+ 2.Kf7 Rf1+ 3.Ke6 Re1+ 4.Kd5 Re5+ 5.Kd4 Re4+ 6.Kc5 Re5+ 7.Kb4 Re4+ 8.Kb5 Re5+ 9.Kc4 Re4+ 10.Kb3 Re3+ 11.Kc2 Rc3+ 12.Kb2 Rxc6 13.e8=Q+ Kxb7 14.Qe4 0:02 3/14 1.74 939184 1...Rg1+ 2.Kf7 Rf1+ 3.Ke6 Re1+ 4.Kd5 Re5+ 5.Kd4 Re4+ 6.Kc5 Re5+ 7.Kb4 Re4+ 8.Kb5 Re5+ 9.Kc4 Re4+ 10.Kd3 Re3+ 11.Kc2 Re2+ 12.Kc3 Re3+ 13.Kd2 Rd3+ 14.Kc2 Rd2+ 15.Kc3 Re2 0:02 4/15 1.77 1090867 1...Rg1+ 2.Kf7 Rf1+ 3.Ke6 Re1+ 4.Kd5 Re5+ 5.Kd4 Re4+ 6.Kc5 Re5+ 7.Kb4 Re4+ 8.Kb5 Re5+ 9.Kc4 Re4+ 10.Kc3 Re6 11.Kb3 Re3+ 12.Kc2 Re6 13.Kd2 Re2+ 14.Kd3 0:03 5/16 1.61 1409807 1...Rg1+ 2.Kf7 Rf1+ 3.Ke6 Re1+ 4.Kd5 Re5+ 5.Kd4 Re4+ 6.Kc5 Re5+ 7.Kb4 Re4+ 8.Kb5 Re5+ 9.Kc4 Re4+ 10.Kd3 Re3+ 11.Kc2 Re6 12.Kb3 Re3+ 13.Kb2 Re2+ 14.Kc1 Rc2+ 15.Kb1 Rc1+ 16.Kb2 Re1 0:04 6/17 1.64 1823762 1...Rg1+ 2.Kf7 Rf1+ 3.Ke6 Re1+ 4.Kd5 Re5+ 5.Kd4 Re4+ 6.Kc5 Re5+ 7.Kb4 Re4+ 8.Kb5 Re5+ 9.Kc4 Re4+ 10.Kb3 Re3+ 11.Kb2 Re2+ 12.Kc3 Re6 13.Kd3 Re3+ 14.Kc2 Re6 15.Kd1 Re1+ 16.Kd2 0:06 7/18 1.57 2933898 1...Rg1+ 2.Kf7 Rf1+ 3.Ke6 Re1+ 4.Kd5 Re5+ 5.Kd4 Re4+ 6.Kc5 Re5+ 7.Kb4 Re4+ 8.Kb5 Re5+ 9.Kc4 Re4+ 10.Kb3 Re3+ 11.Ka2 Re2+ 12.Ka3 Re3+ 13.Kb2 Re2+ 14.Kc3 Re6 15.Kd2 Re2+ 16.Kd3 Re3+ 0:09 8/19 1.56 4574263 1...Rg1+ 2.Kf7 Rf1+ 3.Ke6 Re1+ 4.Kd5 Re5+ 5.Kd4 Re4+ 6.Kc5 Re5+ 7.Kb4 Re4+ 8.Kb5 Re5+ 9.Kc4 Re4+ 10.Kc3 Re6 11.Kb2 Re2+ 12.Kb3 Re3+ 13.Kc2 Re6 14.Kb1 Re1+ 15.Ka2 Re2+ 16.Ka3 Re3+ 0:16 9/20 1.50 8494413 1...Rg1+ 2.Kf7 Rf1+ 3.Ke6 Re1+ 4.Kd5 Re5+ 5.Kd4 Re4+ 6.Kc5 Re5+ 7.Kb4 Re4+ 8.Kb5 Re5+ 9.Kc4 Re4+ 10.Kc3 Re6 11.Kd3 Re3+ 12.Kc2 Re6 13.Kb3 Re3+ 14.Ka2 Re2+ 15.Ka3 Re3+ 16.Kb2 Re2+ 0:26 10/21 1.52 14181888 1...Rg1+ 2.Kf7 Rf1+ 3.Ke6 Re1+ 4.Kd5 Re5+ 5.Kd4 Re4+ 6.Kc5 Re5+ 7.Kb4 Re4+ 8.Kb5 Re5+ 9.Kc4 Re4+ 10.Kc3 Re6 11.Ra7 Rxc6+ 12.Kd4 Re6 13.Kc5 Re2 14.Kd6 Rd2+ 15.Ke6 Re2+ 16.Kf7 Rf2+ 0:36 11/22 1.35 19810532 1...Rg1+ 2.Kf7 Rf1+ 3.Ke6 Re1+ 4.Kd5 Re5+ 5.Kd4 Re4+ 6.Kc5 Re5+ 7.Kb4 Re4+ 8.Kb5 Re5+ 9.Kc4 Re4+ 10.Kc3 Re3+ 11.Kd2 Re2+ 12.Kd3 Re3+ 13.Kc2 Re2+ 14.Kc1 Re6 15.Ra7 Rxc6+ 16.Kd2 Re6 1:18 12/23 0.35 43138075 1...Rg1+ 2.Kf7 Rf1+ 3.Ke6 Re1+ 4.Kd5 Re5+ 5.Kd4 Re4+ 6.Kc5 Re5+ 7.Kb4 Re4+ 8.Kb5 Re5+ 9.Kc4 Re4+ 10.Kb3 Re3+ 11.Ka4 Re4+ 12.Ka5 Re5+ 13.Rb5 Rxe7 14.Kb6 Re2 15.Rb4 Rg2 16.Rc4 Rb2+ 1:48 13/24 0.35 60852627 1...Rg1+ 2.Kf7 Rf1+ 3.Ke6 Re1+ 4.Kd5 Re5+ 5.Kd4 Re4+ 6.Kc5 Re5+ 7.Kb4 Re4+ 8.Kb5 Re5+ 9.Kc4 Re4+ 10.Kb3 Re3+ 11.Kc2 Re2+ 12.Kb1 Re1+ 13.Kb2 Re2+ 14.Ka3 Re3+ 15.Ka4 Re4+ 16.Ka5 Re5+ 2:52 14/25 0.35 98934697 1...Rg1+ 2.Kf7 Rf1+ 3.Ke6 Re1+ 4.Kd5 Re5+ 5.Kd4 Re4+ 6.Kc3 Re3+ 7.Kd2 Re2+ 8.Kd3 Re3+ 9.Kc2 Re2+ 10.Kb1 Re1+ 11.Ka2 Re2+ 12.Ka3 Re3+ 13.Kb2 Re2+ 14.Kb3 Re3+ 15.Ka4 Re4+ 16.Rb4 Rxe7 4:25 15/26 0.35 154192733 1...Rg1+ 2.Kf7 Rf1+ 3.Ke6 Re1+ 4.Kd5 Re5+ 5.Kd4 Re4+ 6.Kc3 Re3+ 7.Kd2 Re2+ 8.Kd3 Re3+ 9.Kc2 Re2+ 10.Kb1 Re1+ 11.Kb2 Re2+ 12.Kb3 Re3+ 13.Kb4 Re4+ 14.Ka3 Re3+ 15.Ka4 Re4+ 16.Rb4 Rxe7 6:58 16/27 0.35 245760669 1...Rg1+ 2.Kf7 Rf1+ 3.Ke6 Re1+ 4.Kd5 Re5+ 5.Kd4 Re4+ 6.Kc3 Re3+ 7.Kd2 Re2+ 8.Kd3 Re3+ 9.Kc2 Re2+ 10.Kb1 Re1+ 11.Kb2 Re2+ 12.Kb3 Re3+ 13.Kb4 Re4+ 14.Ka3 Re3+ 15.Ka4 Re4+ 16.Rb4 Rxe7 11:02 17/28 0.35 387452182 1...Rg1+ 2.Kf7 Rf1+ 3.Ke6 Re1+ 4.Kd5 Re5+ 5.Kd4 Re4+ 6.Kc3 Re3+ 7.Kd2 Re2+ 8.Kd3 Re3+ 9.Kc2 Re2+ 10.Kb1 Re1+ 11.Kb2 Re2+ 12.Kb3 Re3+ 13.Kb4 Re4+ 14.Ka3 Re3+ 15.Ka4 Re4+ 16.Rb4 Rxe7 Steve
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