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Dann Corbit
Joined: 08 Mar 2006
Posts: 5125
Location: Redmond, WA USA
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 Post subject: Stockfish 1.8 demolishes WAC.230 Posted: Mon Aug 02, 2010 5:13 pm |
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In 16 seconds it simultaneously finds both the solution, along with Alex Szabo's brilliant refutation, and then finds a refutation to the refutation.
Amazing. No other engine comes close. Crafty 20 with Jeremiah Pennery's wall detection code can find the solution but it takes much longer to see Re2 after c3 and cannot find the final continuation. Other engines like Rybka, Critter, Ivanhoe... flail aimlessly for hours (no clue what to do after an 8 hour search).
[d]2b5/1r6/2kBp1p1/p2pP1P1/2pP4/1pP3K1/1R3P2/8 b - - acd 37; acn 13114929499; acs 3073; bm Rb4; ce 444; id "WAC.230"; pv Rb4 cxb4 a4 b5+ Kxb5 Ba3 c3 Re2 Kc4 f4 Kxd4 f5 Kd3 fxg6 Kxe2 g7 b2 g8=Q b1=Q Qxc8 Qg1+ Kh4 Qh1+ Kg3 Qf3+ Kh4 Qe4+ Kg3 Qxe5+ Kh4 d4 Qc6 d3 Qg2+ Kd1 g6 Qf5 Bb4 Qf6+ Kh5 Qh8+ Kg5;
| Code: |
Analysis from Q:\epd\WAC230.EPD
07/31/2010 8:44:37 PM Level: 54000 Seconds
Analyzing engine: Stockfish-18-64-ja
1) Rb4; id "WAC.230";
Searching move: Rb7-b4
Best move (Stockfish-18-64-ja): Rb7-b4
identical moves! Found in: 00:16
2 00:00 107 309 +2.66 a5a4 Kg3f4
2 00:00 136 393 +2.90 Rb7f7 f2f4
3 00:00 233 671 +3.31 Rb7f7 f2f4 a5a4
4 00:00 415 1.195 +2.90 Rb7f7 f2f4 a5a4 Kg3f3
5 00:00 706 2.005 +3.07 Rb7f7 f2f4 a5a4 Kg3f3 Kc6b5
6 00:00 1.480 4.192 +2.82 Rb7f7 f2f4 Rf7h7 f4f5 e6xf5 Kg3f4
7 00:00 3.632 9.896 +2.98 Rb7f7 f2f3 a5a4 Kg3f2 Rf7a7 Bd6c5 Ra7h7
8 00:00 10.765 28.860 +2.74 Rb7f7 f2f3 a5a4 Kg3f2 Rf7f5 Bd6e7 Kc6b5 Kf2e3 Bc8d7 f3f4 Rf5f7
9 00:00 12.546 33.367 +2.74 Rb7f7 f2f3 a5a4 Kg3f2 Rf7f5 Bd6e7 Kc6b5 Kf2e3 Bc8d7 f3f4 Rf5f7
9 00:00 18.919 49.656 +2.82 Kc6b5 Kg3f4 Rb7h7 Kf4e3 Rh7h5 Bd6e7 a5a4 f2f3 Rh5h7
10 00:00 23.127 59.452 +2.78 Kc6b5 Kg3f4 Rb7h7 f2f3 a5a4 Kf4e3 Rh7h5 Bd6c5 Rh5xg5 Bc5e7
11+ 00:00 34.355 86.319 +2.86 Kc6b5 Kg3f4
11+ 00:00 36.135 89.888 +2.94 Kc6b5 Kg3f4
11 00:00 37.772 93.034 +2.94 Kc6b5 Kg3f4 Rb7h7 f2f3 a5a4 Kf4e3 Rh7h5 Ke3f4 Bc8b7 Bd6c5 Rh5h3
12 00:00 45.115 109.502 +2.86 Kc6b5 Kg3f4 Rb7h7 f2f3 a5a4 Kf4e3 Rh7h5 Ke3f4 Bc8b7 Kf4e3 Rh5xg5 Bd6e7
13 00:00 57.345 136.211 +2.98 Kc6b5 Kg3f4 Rb7h7 f2f3 a5a4 Kf4e3 Rh7h5 Bd6e7 Bc8b7 Ke3d2 Bb7c6 Kd2e3 Rh5h7
14 00:00 164.784 363.761 +2.98 Kc6b5 f2f3 Rb7h7 Bd6a3 Rh7h5 Kg3f4 Rh5h1 Rb2g2 a5a4 Kf4e3
14+ 00:00 182.940 395.974 +3.15 Rb7h7 Kg3f4
14+ 00:00 212.788 447.974 +3.31 Rb7h7 Kg3f4
15+ 00:00 586.487 1.041.717 +3.07 Kc6b5 f2f3
15 00:00 623.487 1.080.566 +3.07 Kc6b5 Rb2b1 Rb7f7 f2f3 Bc8b7 Kg3f2 Rf7h7 Kf2g3 a5a4 Kg3f4 Rh7h5 Bd6c5 Rh5h2 Kf4e3
16+ 00:00 735.852 1.208.295 +3.15 Kc6b5 Rb2b1
16 00:00 745.146 1.205.737 +3.15 Kc6b5 Rb2b1 Rb7h7 Bd6a3 a5a4 Kg3f4 Rh7h3 f2f3 Rh3h2 Kf4e3 Rh2c2 Rb1c1 Rc2g2 Ba3e7 b3b2 Rc1b1 Rg2c2 Ke3f4 Rc2h2
17 00:00 813.873 1.261.818 +3.07 Kc6b5 Rb2b1 Rb7h7 Bd6a3 a5a4 Kg3f4 Rh7h3 f2f3 Rh3h2
18+ 00:00 1.010.252 1.447.352 +3.19 Kc6b5 Rb2b1
18 00:00 1.278.756 1.667.217 +3.11 Kc6b5 Rb2b1 Rb7h7 Bd6a3 Bc8b7 Kg3f4 a5a4 Kf4e3 Rh7h3+ f2f3 Rh3h5 Ba3e7 Rh5h2 Rb1c1 Bb7c6 Be7c5 Rh2g2 Ke3f4 Rg2f2 Kf4e3
19 00:00 1.350.607 1.705.311 +3.11 Kc6b5 Rb2b1 Rb7h7 Bd6a3 Bc8b7 Kg3f4 a5a4 Kf4e3 Rh7h3+ f2f3 Rh3h5 Ba3e7 Rh5h2 Rb1c1 Bb7c6 Be7c5 Rh2g2 Ke3f4 Rg2f2 Kf4e3
19+ 00:00 1.506.773 1.798.058 +3.19 Rb7h7 Rb2b1
19 00:01 2.430.741 2.330.528 +3.19 a5a4 f2f3 Rb7h7 Rb2b1 Rh7h5 Bd6e7 Kc6d7 Be7a3 Rh5xg5+ Kg3f2 Rg5h5 Rb1g1 g6g5 Kf2e3 Bc8b7 Ba3c5 Kd7c6 Bc5e7 Kc6b5 Be7xg5
20 00:01 2.699.959 2.417.152 +3.27 a5a4 f2f3 Rb7h7 Rb2b1 Rh7h5 Bd6e7 Kc6d7 Be7a3 Rh5xg5+ Kg3f2 Rg5h5 Rb1g1 g6g5 Kf2e3 Bc8b7 Rg1g2 Kd7c6 Ke3d2 Rh5h1 Rg2xg5 Rh1h2+ Kd2e3 Kc6b5
21- 00:01 3.534.870 2.723.320 +3.15 a5a4 Bd6a3
21 00:01 3.822.098 2.783.756 +3.15 a5a4 Bd6a3 Rb7h7 Rb2b1 Rh7h5 Ba3e7
22- 00:01 5.273.171 3.136.925 +2.98 a5a4 Bd6a3
22+ 00:02 7.792.198 3.535.480 +3.31 Rb7h7 Rb2b1
22 00:02 7.879.368 3.525.444 +3.31 Rb7h7 Rb2b1 Rh7h5 Kg3g4 a5a4 Rb1g1 Kc6b5 Bd6a3 Bc8d7 Rg1b1 Kb5c6 Kg4f4 Rh5h3 f2f3 Kc6b5 Kf4e3 Bd7c8 Ba3b2 Rh3h5 f3f4 Rh5h3+ Ke3f2 a4a3 Bb2xa3 Rh3xc3 Kf2e1
23 00:02 8.520.337 3.553.101 +3.15 Rb7h7 Rb2b1 Rh7h5 Kg3g4 a5a4 Rb1g1 Kc6b5 Bd6a3 Bc8d7 Rg1b1 Kb5c6 Rb1g1
24 00:02 8.662.388 3.501.369 +3.15 Rb7h7 Rb2b1 Rh7h5 Kg3g4 a5a4 Rb1g1 Kc6b5 Bd6a3 Bc8d7 Rg1b1 Kb5c6 Rb1g1 Kc6b6 Rg1b1 Kb6b5 Ba3b2 Rh5h7 Kg4g3 Bd7e8 Rb1g1 Rh7f7 f2f3 Kb5c6 Kg3f2
25- 00:02 9.675.579 3.595.532 +3.07 Rb7h7 Rb2b1
25 00:02 10.093.530 3.619.049 +3.03 Rb7h7 Rb2b1 Rh7h5 Kg3g4 a5a4 Rb1g1 Kc6b5 Bd6a3 Bc8d7 Rg1b1 Kb5c6 Rb1g1 Kc6b6 Rg1b1 Kb6b5 Rb1g1 Bd7e8 Ba3b2 Be8f7 Kg4f3 Rh5h3+ Kf3f4 Bf7g8 Rg1a1 Rh3h5 Kf4e3 Rh5xg5
26 00:03 11.450.495 3.710.465 +2.98 Rb7h7 Rb2b1 Rh7h5 Kg3g4 a5a4 Rb1g1 Kc6b5 Bd6a3 Bc8d7 Rg1b1 Kb5c6 Rb1g1 Kc6b6 Rg1b1 Kb6b5 Rb1g1 Bd7e8 Ba3b2 Be8f7 Rg1a1 Rh5h2 Kg4g3 Rh2h7 Ra1g1 Rh7h5 Kg3g4
27- 00:04 19.354.446 4.052.438 +2.86 Rb7h7 Rb2b1
27- 00:05 22.028.195 4.140.638 +2.74 Rb7h7 Rb2b1
27- 00:06 27.165.054 4.253.178 +2.50 Rb7h7 Rb2b1
27 00:13 58.957.978 4.333.870 +2.18 Rb7h7 Rb2b1 Rh7h5 f2f4 Bc8d7 Kg3g2 Bd7e8 Bd6a3
27 00:16 69.850.986 4.309.395 +2.34 Rb7b4 c3xb4 a5a4 b4b5+ Kc6xb5 Bd6a3 c4c3 Rb2e2 Kb5c4 f2f4 Kc4xd4 f4f5 Kd4d3 f5xg6 Kd3xe2 g6g7 b3b2 g7g8Q b2b1Q Qg8xc8 Qb1d3+ Kg3h4 c3c2 Qc8c6 Qd3e4+ Kh4h5 Ke2d2 Qc6d6 Qe4h7+ Kh5g4 Qh7d3 Qd6b4+ Kd2d1 Qb4f8 Kd1e2 Ba3c1 d5d4 Qf8f4 Ke2d1 Bc1b2 Qd3e2+ Kg4g3 Qe2e1+ Kg3f3 Qe1f1+ Kf3g4
28+ 00:23 97.570.366 4.242.374 +3.03 Rb7b4 c3xb4
28 00:39 167.823.617 4.246.549 +2.50 Rb7b4 c3xb4 a5a4 b4b5+ Kc6xb5 Bd6a3 c4c3 Rb2e2 Kb5c4 f2f4 Kc4xd4 f4f5 Kd4d3 f5xg6 Kd3xe2 g6g7 b3b2 g7g8Q b2b1Q Qg8xc8 Qb1d3+ Kg3h4 Qd3e4+ Kh4h5 Qe4h7+ Kh5g4 d5d4 Qc8c6 Qh7f5+ Kg4h5 d4d3 Qc6g2+ Ke2d1 Ba3b4 Qf5xe5 Qg2c6 Kd1d2 Qc6xa4 Kd2e3 Qa4a1 Qe5h2+ Kh5g6 c3c2 Qa1e1+ Qh2e2 Bb4d2+ Ke3d4 Qe1c1 Kd4c4 Kg6f6 Qe2g4 g5g6 Qg4f5+
29+ 00:49 208.450.049 4.248.620 +2.98 Rb7b4 c3xb4
29 00:49 211.148.787 4.247.441 +2.70 Rb7b4 c3xb4 a5a4 b4b5+ Kc6xb5 Bd6a3 c4c3 Rb2e2 Kb5c4 f2f4 Kc4xd4 f4f5 Kd4d3 f5xg6 Kd3xe2 g6g7 b3b2 g7g8Q b2b1Q Qg8xc8 Qb1d3+ Kg3h4 Qd3e4+ Kh4h5 Qe4h7+ Kh5g4 d5d4 Qc8c6 Qh7f5+ Kg4h5 d4d3 Qc6g2+ Qf5f2 Qg2e4+ Qf2e3 Qe4g2+ Ke2d1 g5g6 Qe3e2+ Qg2g4 Kd1c2 g6g7 Qe2xg4+ Kh5xg4 d3d2 g7g8Q d2d1Q+ Kg4f4 Qd1d4+ Kf4f3 Qd4d3+ Kf3g2 Qd3e2+ Kg2h3 Qe2f1+ Kh3h2 Kc2b3 Ba3c5 Qf1e2+ Kh2g1 Qe2xe5 Bc5f2
30+ 00:52 221.336.684 4.213.689 +2.98 Rb7b4 c3xb4
30+ 01:02 255.087.790 4.052.872 +3.27 Rb7b4 Rb2b1
30 01:16 311.244.583 4.068.822 +2.86 Rb7b4 c3xb4 a5a4 b4b5+ Kc6xb5 Bd6a3 c4c3 Rb2e2 Kb5c4 f2f4 Kc4xd4 f4f5 Kd4d3 f5xg6 Kd3xe2 g6g7 b3b2 g7g8Q b2b1Q Qg8xc8 Qb1d3+ Kg3h4 Qd3e4+ Kh4h5 Qe4h7+ Kh5g4 d5d4 Qc8c6 Qh7f5+ Kg4h5 d4d3 Qc6g2+ Qf5f2 Qg2e4+ Qf2e3 Qe4g2+ Ke2d1 g5g6 Qe3e2+ Qg2g4 Kd1c2 g6g7 Qe2xg4+ Kh5xg4 d3d2 g7g8Q d2d1Q+ Kg4f4 Kc2b3 Ba3c5 Qd1f1+ Kf4g3 Qf1d3+ Kg3f2 Qd3f5+ Kf2e2 Qf5h5+ Ke2f2 Qh5xe5 Bc5e3 a4a3
31+ 01:21 332.373.037 4.069.657 +3.15 Rb7b4 c3xb4
31 01:26 349.482.923 4.060.968 +2.86 Rb7b4 c3xb4 a5a4 b4b5+ Kc6xb5 Bd6a3 c4c3 Rb2e2 Kb5c4 f2f4 Kc4xd4 f4f5 Kd4d3 f5xg6 Kd3xe2 g6g7 b3b2 g7g8Q b2b1Q Qg8xc8 Qb1d3+ Kg3h4 Qd3e4+ Kh4h5 Qe4h7+ Kh5g4 d5d4 Qc8c6 Qh7f5+ Kg4h5 d4d3 Qc6g2+ Qf5f2 Qg2e4+ Qf2e3 Qe4g2+ Ke2d1 g5g6 Qe3e2+ Qg2g4 Kd1c2 g6g7 Qe2xg4+ Kh5xg4 d3d2 g7g8Q d2d1Q+ Kg4f4 Kc2b3 Ba3c5 Qd1f1+ Kf4g3 Qf1d3+ Kg3f2 Qd3f5+ Kf2e2 Qf5h5+ Ke2f2 Qh5xe5 Bc5e3 a4a3
32+ 01:35 389.997.061 4.082.755 +2.94 Rb7b4 c3xb4
32+ 01:38 400.378.659 4.085.955 +3.03 Rb7b4 c3xb4
32+ 01:46 436.410.563 4.082.877 +3.19 Rb7b4 f2f4
32 01:50 449.339.571 4.070.547 +3.15 Rb7b4 c3xb4 a5a4 b4b5+ Kc6xb5 Bd6a3 c4c3 Rb2e2 Kb5c4 f2f4 Kc4xd4 f4f5 Kd4d3 Kg3f2 e6xf5 e5e6 d5d4 e6e7 Bc8d7 Kf2e1 Bd7e8 Re2f2 Kd3e4 Ke1d1 d4d3 Ba3c1 Ke4d5 Rf2h2 Kd5e6 Rh2d2 c3xd2 Kd1xd2 Ke6xe7 Kd2xd3 Be8b5+ Kd3c3 Ke7e6 Kc3b2 Ke6d5
33 02:33 625.948.807 4.065.869 +3.11 Rb7b4 c3xb4 a5a4 b4b5+ Kc6xb5 Bd6a3 c4c3 Rb2e2 Kb5c4 f2f4 Kc4xd4 f4f5 Kd4d3 f5xg6 Kd3xe2 g6g7 b3b2 g7g8Q b2b1Q Qg8xc8 Qb1d3+ Kg3h4 Qd3e4+ Kh4h5 Qe4h7+ Kh5g4 d5d4 Qc8c6 Qh7f5+ Kg4h5 d4d3 Qc6g2+
34+ 06:09 1.509.778.351 4.086.346 +3.31 Rb7b4 c3xb4
34- 07:19 1.803.681.438 4.103.752 +2.90 Rb7b4 c3xb4
34+ 08:25 2.089.027.462 4.128.643 +3.51 Rb7b4 c3xb4
34+ 11:35 2.894.043,393 4.159.245 +3.91 Rb7b4 f2f4
34 12:59 3.236.666,336 4.154.669 +3.15 Rb7b4 c3xb4 a5a4 b4b5+ Kc6xb5 Rb2e2 c4c3 Bd6a3 Kb5c4 f2f4 Kc4xd4 f4f5 Kd4d3 f5xg6 Kd3xe2 g6g7 b3b2 g7g8Q b2b1Q Qg8xc8 Qb1g1+ Kg3h4 Qg1h1+ Kh4g3
35+ 13:06 3.269.470,450 4.155.700 +3.23 Rb7b4 c3xb4
35+ 13:09 3.279.989,529 4.155.307 +3.31 Rb7b4 c3xb4
35- 14:17 3.560.685,625 4.152.112 +2.82 Rb7b4 c3xb4
35 21:09 5.294.627,267 4.169.681 +3.43 Rb7b4 c3xb4 a5a4 b4b5+ Kc6xb5 Bd6a3 c4c3 Rb2e2 Kb5c4 f2f4 Kc4xd4 f4f5 Kd4d3 f5xg6 Kd3xe2 g6g7 b3b2 g7g8Q b2b1Q Qg8xc8 Qb1d3+ Kg3h4 Qd3e4+ Kh4g3 Qe4xe5+ Kg3h4 d5d4 Qc8c6 d4d3 Qc6g2+ Ke2d1 g5g6 Qe5f5 Ba3b4 Qf5f6+ Kh4h5 Qf6h8+ Kh5g5
36+ 28:11 7.155.610,260 4.230.610 +3.75 Rb7b4 c3xb4
36+ 33:34 8.547.416,436 4.243.897 +4.08 Rb7b4 c3xb4
36 38:27 9.784.010,850 4.239.878 +3.91 Rb7b4 c3xb4 a5a4 b4b5+ Kc6xb5 Bd6a3 c4c3 Rb2e2 Kb5c4 f2f4 Kc4xd4 f4f5 Kd4d3 f5xg6 Kd3xe2 g6g7 b3b2 g7g8Q b2b1Q Qg8xc8 Qb1g1+ Kg3h4 Qg1h1+ Kh4g3 Qh1f3+ Kg3h4 Qf3e4+
37 51:13 13.114.929,499 4.267.799 +4.44 Rb7b4 c3xb4 a5a4 b4b5+ Kc6xb5 Bd6a3 c4c3 Rb2e2 Kb5c4 f2f4 Kc4xd4 f4f5 Kd4d3 f5xg6 Kd3xe2 g6g7 b3b2 g7g8Q b2b1Q Qg8xc8 Qb1g1+ Kg3h4 Qg1h1+ Kh4g3 Qh1f3+ Kg3h4 Qf3e4+ Kh4g3 Qe4xe5+ Kg3h4 d5d4 Qc8c6 d4d3 Qc6g2+ Ke2d1 g5g6 Qe5f5 Ba3b4 Qf5f6+ Kh4h5 Qf6h8+ Kh5g5
08/01/2010 11:44:44 AM, Time for this analysis: 15:00:01, Rated time: 00:16
1 of 1 matching moves
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Stockfish 1.8 demolishes WAC.230