What engine can see the best move Bf8+!

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ZirconiumX
Posts: 1334
Joined: Sun Jul 17, 2011 11:14 am

Re: What engine can see the best move Bf8+!

Post by ZirconiumX »

That version of Komodo is ancient.

You can get Komodo 3 for free from the website.

Matthew:out
Some believe in the almighty dollar.

I believe in the almighty printf statement.
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pichy
Posts: 2564
Joined: Thu Mar 09, 2006 3:04 am

Re: What engine can see the best move Bf8+!

Post by pichy »

ZirconiumX wrote:That version of Komodo is ancient.

You can get Komodo 3 for free from the website.

Matthew:out
Not even Komodo 4 can solve this :wink:

[D]6R1/8/2pB3k/2P4p/5p1q/5P2/4P1K1/8 w - - 0 1


FEN: 6R1/8/2pB3k/2P4p/5p1q/5P2/4P1K1/8 w - - 0 1

Komodo3-32:
1 00:00 151 1.509.999 -0.01 Bd6e5 Kh6h7 Rg8g7+
2 00:00 244 2.606 -0.01 Bd6e5 Kh6h7 Rg8g7+ Kh7h6
3 00:00 378 4.038 -0.01 Bd6e5 Kh6h7 Rg8g7+ Kh7h6
4 00:00 1.146 12.243 -0.45 Bd6e5 Qh4e7 Be5xf4+ Kh6h7 Rg8a8 Qe7xe2+ Kg2g3
5 00:00 1.481 13.562 -0.54 Bd6e5 Qh4e7 Be5xf4+ Kh6h7 Rg8a8 Qe7xe2+ Kg2g3 Qe2e7
5 00:00 2.439 19.543 -0.54 Bd6e5 Qh4e7 Be5xf4+ Kh6h7 Rg8a8 Qe7xe2+ Kg2g3 Qe2e7
6 00:00 3.074 24.631 -0.54 Bd6e5 Qh4e7 Be5xf4+ Kh6h7 Rg8g5 Qe7xe2+ Kg2g3 Qe2e1+ Kg3g2 h5h4
6 00:00 4.693 37.603 -0.28 Rg8f8
6 00:00 5.892 41.965 -0.05 Rg8f8 Qh4g3+ Kg2f1 Qg3h3+ Kf1g1 Qh3g3+ Kg1f1
6 00:00 6.200 44.159 -0.05 Rg8f8 Qh4g3+ Kg2f1 Qg3h3+ Kf1g1 Qh3g3+ Kg1f1
7 00:00 7.224 46.307 -0.05 Rg8f8 Qh4g3+ Kg2f1 Qg3h3+ Kf1g1 Qh3g3+ Kg1f1
7 00:00 7.755 49.711 -0.05 Rg8f8 Qh4g3+ Kg2f1 Qg3h3+ Kf1g1 Qh3g3+ Kg1f1
8 00:00 9.496 55.337 -0.05 Rg8f8 Qh4g3+ Kg2f1 Qg3h3+ Kf1g1 Qh3g3+ Kg1f1
8 00:00 10.683 62.254 -0.05 Rg8f8 Qh4g3+ Kg2f1 Qg3h3+ Kf1g1 Qh3g3+ Kg1f1
9 00:00 16.298 87.061 -0.05 Rg8f8 Qh4g3+ Kg2f1 Qg3h3+ Kf1g1 Qh3g3+ Kg1f1
9 00:00 18.206 89.772 -0.05 Rg8f8 Qh4g3+ Kg2f1 Qg3h3+ Kf1g1 Qh3g3+ Kg1f1
10 00:00 24.007 109.921 -0.05 Rg8f8 Qh4g3+ Kg2f1 Qg3h3+ Kf1g1 Qh3g3+ Kg1f1
10 00:00 27.554 126.162 -0.05 Rg8f8 Qh4g3+ Kg2f1 Qg3h3+ Kf1g1 Qh3g3+ Kg1f1
11 00:00 41.412 156.153 -0.05 Rg8f8 Qh4g3+ Kg2f1 Qg3h3+ Kf1g1 Qh3g3+ Kg1f1
11 00:00 45.847 163.272 -0.05 Rg8f8 Qh4g3+ Kg2f1 Qg3h3+ Kf1g1 Qh3g3+ Kg1f1
12 00:00 63.883 204.752 -0.05 Rg8f8 Qh4g3+ Kg2f1 Qg3h3+ Kf1g1 Qh3g3+ Kg1f1
12 00:00 72.388 201.749 -0.05 Rg8f8 Qh4g3+ Kg2f1 Qg3h3+ Kf1g1 Qh3g3+ Kg1f1
13 00:00 110.147 243.471 -0.05 Rg8f8 Qh4g3+ Kg2f1 Qg3h3+ Kf1g1 Qh3g3+ Kg1f1
13 00:00 121.034 242.455 -0.05 Rg8f8 Qh4g3+ Kg2f1 Qg3h3+ Kf1g1 Qh3g3+ Kg1f1
14 00:00 154.290 267.306 -0.05 Rg8f8 Qh4g3+ Kg2f1 Qg3h3+ Kf1g1 Qh3g3+ Kg1f1
14 00:00 176.680 276.234 -0.05 Rg8f8 Qh4g3+ Kg2f1 Qg3h3+ Kf1g1 Qh3g3+ Kg1f1
15 00:01 241.018 315.302 -0.05 Rg8f8 Qh4g3+ Kg2f1 Qg3h3+ Kf1g1 Qh3g3+ Kg1f1
15 00:01 270.744 315.551 -0.05 Rg8f8 Qh4g3+ Kg2f1 Qg3h3+ Kf1g1 Qh3g3+ Kg1f1
16 00:01 443.391 373.979 -0.05 Rg8f8 Qh4g3+ Kg2f1 Qg3h3+ Kf1g1 Qh3g3+ Kg1f1
16 00:02 995.673 443.229 -0.05 Rg8f8 Qh4g3+ Kg2f1 Qg3h3+ Kf1g1 Qh3g3+ Kg1f1
17 00:02 1.130.639 452.979 -0.05 Rg8f8 Qh4g3+ Kg2f1 Qg3h3+ Kf1g1 Qh3g3+ Kg1f1
17 00:04 1.801.835 487.350 -0.05 Rg8f8 Qh4g3+ Kg2f1 Qg3h3+ Kf1g1 Qh3g3+ Kg1f1
18 00:05 2.353.371 472.905 -0.05 Rg8f8 Qh4g3+ Kg2f1 Qg3h3+ Kf1g1 Qh3g3+ Kg1f1
18 00:06 2.922.727 485.372 -0.05 Rg8f8 Qh4g3+ Kg2f1 Qg3h3+ Kf1g1 Qh3g3+ Kg1f1
19 00:07 3.504.789 492.687 -0.05 Rg8f8 Qh4g3+ Kg2f1 Qg3h3+ Kf1g1 Qh3g3+ Kg1f1
19 00:12 6.234.339 532.848 -0.04 Kg2f1 Qh4h1+ Rg8g1 Qh1h3+ Rg1g2 Qh3f5 Rg2g8 Qf5f6 Rg8e8 Qf6a1+ Kf1g2 Qa1g7+ Kg2f2 Qg7g5 Re8e6+ Kh6h7 Re6e4 Qg5g3+ Kf2f1 Qg3h3+ Kf1e1 Qh3g2 Re4xf4 Kh7g6 Rf4e4 Qg2g1+ Ke1d2 Qg1b1 Kd2e3 Qb1g1+ Ke3d3
19 00:12 6.275.569 532.820 -0.04 Kg2f1 Qh4h1+ Rg8g1 Qh1h3+ Rg1g2 Qh3f5 Rg2g8 Qf5f6 Rg8e8 Qf6a1+ Kf1g2 Qa1g7+ Kg2f2 Qg7g5 Re8e6+ Kh6h7 Re6e4 Qg5g3+ Kf2f1 Qg3h3+ Kf1e1 Qh3g2 Re4xf4 Kh7g6 Rf4e4 Qg2g1+ Ke1d2 Qg1b1 Kd2e3 Qb1g1+ Ke3d3
20 00:13 7.255.312 542.687 -0.04 Kg2f1 Qh4h1+ Rg8g1 Qh1h3+ Rg1g2 Qh3f5 Rg2g8 Qf5f6 Rg8e8 Qf6a1+ Kf1g2 Qa1g7+ Kg2f2 Qg7g5 Re8e6+ Kh6h7 Re6e4 Qg5g3+ Kf2f1 Qg3h3+ Kf1e1 Qh3g2 Re4xf4 Kh7g6 Rf4e4 Qg2g1+ Ke1d2 Qg1b1 Kd2e3 Qb1g1+ Ke3d3 Qg1c1 Re4e6+ Kg6f7
20 00:17 9.678.443 555.924 -0.03 Rg8e8 Qh4g3+ Kg2f1 Kh6h7 Re8e7+ Kh7g6 Re7e6+ Kg6f7 Re6e4 Qg3h3+ Kf1e1 Qh3g2 Re4xf4+ Kf7g6 Ke1d2 Qg2f2 Bd6e7 Qf2g1 Rf4f6+ Kg6h7 Rf6f7+ Kh7g8 Rf7f4 Qg1g7 Be7d6 Qg7g5 Kd2e3 h5h4
20 00:18 10.340.130 559.820 -0.03 Rg8e8 Qh4g3+ Kg2f1 Kh6h7 Re8e7+ Kh7g6 Re7e6+ Kg6f7 Re6e4 Qg3h3+ Kf1e1 Qh3g2 Re4xf4+ Kf7g6 Ke1d2 Qg2f2 Bd6e7 Qf2g1 Rf4f6+ Kg6h7 Rf6f7+ Kh7g8 Rf7f4 Qg1g7 Be7d6 Qg7g5 Kd2e3 h5h4
21 00:21 12.242.657 569.923 -0.03 Rg8e8 Qh4g3+ Kg2f1 Kh6h7 Re8e7+ Kh7g6 Re7e6+ Kg6f7 Re6e4 Qg3h3+ Kf1e1 Qh3g2 Re4xf4+ Kf7g6 Ke1d2 Qg2f2 Bd6e7 Qf2g1 Rf4f6+ Kg6h7 Rf6f7+ Kh7g8 Rf7f4 Qg1a1 Be7d6 Kg8h7 Rf4e4 Kh7g6 Re4e6+ Kg6g5
21 00:33 19.160.860 574.220 -0.02 Rg8f8 Qh4g5+ Kg2f2 Qg5g3+ Kf2f1 Qg3h4 Rf8xf4 Qh4h1+ Kf1f2 Qh1h2+ Kf2e1 Qh2g1+ Ke1d2 Kh6g6 Rf4f8 Qg1g5+ Kd2d3 Kg6g7 Rf8f4 Qg5g6+ Kd3d2 Kg7h7 Rf4e4 Qg6g5+ Kd2d3 Qg5c1 Re4e5 Kh7g6 Re5e6+ Kg6f7 Re6e7+ Kf7f6 Re7c7 Qc1a3+ Kd3e4 Qa3b4+ Ke4e3
21 00:35 20.151.338 575.902 -0.02 Rg8f8 Qh4g5+ Kg2f2 Qg5g3+ Kf2f1 Qg3h4 Rf8xf4 Qh4h1+ Kf1f2 Qh1h2+ Kf2e1 Qh2g1+ Ke1d2 Kh6g6 Rf4f8 Qg1g5+ Kd2d3 Kg6g7 Rf8f4 Qg5g6+ Kd3d2 Kg7h7 Rf4e4 Qg6g5+ Kd2d3 Qg5c1 Re4e5 Kh7g6 Re5e6+ Kg6f7 Re6e7+ Kf7f6 Re7c7 Qc1a3+ Kd3e4 Qa3b4+ Ke4e3
22 00:44 25.478.029 582.455 -0.02 Rg8f8 Qh4g5+ Kg2f2 Qg5g3+ Kf2f1 Qg3h4 Rf8xf4 Qh4h1+ Kf1f2 Qh1h2+ Kf2e1 Qh2g1+ Ke1d2 Kh6g6 Rf4f8 Kg6g7 Rf8f5 Qg1d4+ Kd2e1 Kg7g6 Rf5f4 Qd4g1+ Ke1d2 Qg1a1 Rf4e4 Kg6h7 Re4e7+ Kh7g6 Kd2e3 Qa1e1 Re7e6+ Kg6f5 Re6e5+ Kf5g6 Re5e4 h5h4 Re4g4+ Kg6f5 Rg4g8
22 00:50 29.591.414 588.362 -0.02 Rg8f8 Qh4g5+ Kg2f2 Qg5g3+ Kf2f1 Qg3h4 Rf8xf4 Qh4h1+ Kf1f2 Qh1h2+ Kf2e1 Qh2g1+ Ke1d2 Kh6g6 Rf4f8 Kg6g7 Rf8f5 Qg1d4+ Kd2e1 Kg7g6 Rf5f4 Qd4g1+ Ke1d2 Qg1a1 Rf4e4 Kg6h7 Re4e7+ Kh7g6 Kd2e3 Qa1e1 Re7e6+ Kg6f5 Re6e5+ Kf5g6 Re5e4 h5h4 Re4g4+ Kg6f5 Rg4g8
23 01:19 48.039.828 603.936 +0.02 Rg8f8 Qh4g5+ Kg2f2 Qg5g3+ Kf2f1 Qg3h3+ Kf1e1 Qh3g2 Rf8h8+ Kh6g7 Rh8xh5 Qg2g6 Rh5e5 Qg6g1+ Ke1d2 Qg1d4+ Kd2c1 Qd4a4 Re5e4 Qa4a1+ Kc1c2 Qa1a2+ Kc2d1 Qa2a1+ Kd1d2 Qa1a5+ Kd2d3 Qa5a6+ Kd3c3 Qa6a5+ Kc3c4 Qa5a6+ Kc4b3 Kg7g6 Bd6xf4 Qa6b5+ Kb3c2 Qb5xc5+ Kc2d1 Qc5a5 Bf4d2 Qa5a1+ Bd2c1
23 01:31 55.396.299 609.202 +0.02 Rg8f8 Qh4g5+ Kg2f2 Qg5g3+ Kf2f1 Qg3h3+ Kf1e1 Qh3g2 Rf8h8+ Kh6g7 Rh8xh5 Qg2g6 Rh5e5 Qg6g1+ Ke1d2 Qg1d4+ Kd2c1 Qd4a4 Re5e4 Qa4a1+ Kc1c2 Qa1a2+ Kc2d1 Qa2a1+ Kd1d2 Qa1a5+ Kd2d3 Qa5a6+ Kd3c3 Qa6a5+ Kc3c4 Qa5a6+ Kc4b3 Kg7g6 Bd6xf4 Qa6b5+ Kb3c2 Qb5xc5+ Kc2d1 Qc5a5 Bf4d2 Qa5a1+ Bd2c1
24 02:19 85.790.575 618.116 +0.04 Rg8f8 Qh4g5+ Kg2f2 Qg5g3+ Kf2f1 Qg3h3+ Kf1e1 Qh3g2 Rf8h8+ Kh6g7 Rh8xh5 Qg2g6 Rh5e5 Qg6g1+ Ke1d2 Qg1d4+ Kd2c2 Qd4a4+ Kc2b2 Qa4b4+ Kb2a2 Qb4d2+ Ka2b1 Qd2c3 Re5e4 Kg7g6 Bd6xf4 Qc3xc5 Bf4e5 Kg6f5 Be5b2 Kf5g6 Re4g4+ Kg6h5 Rg4g2 Qc5f5+ Kb1c1 Qf5f4+ Kc1c2 Qf4f5+ Kc2d1 Qf5f4
24 02:47 103.996.167 621.460 +0.04 Rg8f8 Qh4g5+ Kg2f2 Qg5g3+ Kf2f1 Qg3h3+ Kf1e1 Qh3g2 Rf8h8+ Kh6g7 Rh8xh5 Qg2g6 Rh5e5 Qg6g1+ Ke1d2 Qg1d4+ Kd2c2 Qd4a4+ Kc2b2 Qa4b4+ Kb2a2 Qb4d2+ Ka2b1 Qd2c3 Re5e4 Kg7g6 Bd6xf4 Qc3xc5 Bf4e5 Kg6f5 Be5b2 Kf5g6 Re4g4+ Kg6h5 Rg4g2 Qc5f5+ Kb1c1 Qf5f4+ Kc1c2 Qf4f5+ Kc2d1 Qf5f4
25 03:10 117.941.217 621.736 +0.05 Rg8f8 Qh4g5+ Kg2f2 Qg5g3+ Kf2f1 Qg3h3+ Kf1e1 Qh3g2 Rf8h8+ Kh6g7 Rh8xh5 Qg2g6 Rh5e5 Qg6g1+ Ke1d2 Qg1d4+ Kd2c2 Qd4a4+ Kc2c3 Qa4d1 Re5e4 Qd1c1+ Kc3b3 Qc1b1+ Kb3c4 Qb1c2+ Kc4d4 Qc2b2+ Kd4d3 Qb2a3+ Kd3c2 Qa3a2+ Kc2c1 Qa2a3+ Kc1b1 Qa3a5 Kb1b2 Kg7g6 Kb2c2 Qa5b5 Bd6xf4 Qb5xc5+ Kc2d3 Qc5a3+ Kd3d2
25 03:12 119.539.555 621.423 +0.05 Rg8f8 Qh4g5+ Kg2f2 Qg5g3+ Kf2f1 Qg3h3+ Kf1e1 Qh3g2 Rf8h8+ Kh6g7 Rh8xh5 Qg2g6 Rh5e5 Qg6g1+ Ke1d2 Qg1d4+ Kd2c2 Qd4a4+ Kc2c3 Qa4d1 Re5e4 Qd1c1+ Kc3b3 Qc1b1+ Kb3c4 Qb1c2+ Kc4d4 Qc2b2+ Kd4d3 Qb2a3+ Kd3c2 Qa3a2+ Kc2c1 Qa2a3+ Kc1b1 Qa3a5 Kb1b2 Kg7g6 Kb2c2 Qa5b5 Bd6xf4 Qb5xc5+ Kc2d3 Qc5a3+ Kd3d2
26 03:43 139.715.262 625.469 +0.05 Rg8f8 Qh4g5+ Kg2f2 Qg5g3+ Kf2f1 Qg3h3+ Kf1e1 Qh3g2 Rf8h8+ Kh6g7 Rh8xh5 Qg2g6 Rh5e5 Qg6g1+ Ke1d2 Qg1d4+ Kd2c2 Qd4a4+ Kc2b1 Qa4d1+ Kb1a2 Qd1c2+ Ka2a1 Qc2c3+ Ka1b1 Kg7f6 Re5e8 Qc3b4+ Kb1a2 Qb4d4 Re8e4 Qd4d1 Bd6e5+ Kf6g6 Be5xf4 Qd1c2+ Ka2a1 Qc2xc5 Ka1b2 Qc5b5+ Kb2c2 Qb5c5+ Kc2d1 Qc5a5 Bf4d2 Qa5a1+ Kd1c2
26 03:47 141.863.516 625.175 +0.05 Rg8f8 Qh4g5+ Kg2f2 Qg5g3+ Kf2f1 Qg3h3+ Kf1e1 Qh3g2 Rf8h8+ Kh6g7 Rh8xh5 Qg2g6 Rh5e5 Qg6g1+ Ke1d2 Qg1d4+ Kd2c2 Qd4a4+ Kc2b1 Qa4d1+ Kb1a2 Qd1c2+ Ka2a1 Qc2c3+ Ka1b1 Kg7f6 Re5e8 Qc3b4+ Kb1a2 Qb4d4 Re8e4 Qd4d1 Bd6e5+ Kf6g6 Be5xf4 Qd1c2+ Ka2a1 Qc2xc5 Ka1b2 Qc5b5+ Kb2c2 Qb5c5+ Kc2d1 Qc5a5 Bf4d2 Qa5a1+ Kd1c2
27 04:20 162.585.234 624.377 +0.05 Rg8f8 Qh4g5+ Kg2f2 Qg5g3+ Kf2f1 Qg3h3+ Kf1e1 Qh3g2 Rf8h8+ Kh6g7 Rh8xh5 Qg2g6 Rh5e5 Qg6g1+ Ke1d2 Qg1d4+ Kd2c1 Qd4c3+ Kc1b1 Kg7f6 Re5e8 Qc3b4+ Kb1c2 Qb4a4+ Kc2c1 Qa4a5 Re8e7 Qa5a1+ Kc1d2 Qa1a5+ Kd2d1 Kf6g6 Re7e4 Qa5a1+ Kd1c2 Qa1a2+ Kc2c3 Qa2a5+ Kc3b3 Qa5b5+ Kb3c2 Kg6h7 Kc2d2 Qb5a5+ Kd2d3 Qa5a3+ Kd3c2 Qa3a2+ Kc2c1
27 04:25 165.416.055 623.739 +0.05 Rg8f8 Qh4g5+ Kg2f2 Qg5g3+ Kf2f1 Qg3h3+ Kf1e1 Qh3g2 Rf8h8+ Kh6g7 Rh8xh5 Qg2g6 Rh5e5 Qg6g1+ Ke1d2 Qg1d4+ Kd2c1 Qd4c3+ Kc1b1 Kg7f6 Re5e8 Qc3b4+ Kb1c2 Qb4a4+ Kc2c1 Qa4a5 Re8e7 Qa5a1+ Kc1d2 Qa1a5+ Kd2d1 Kf6g6 Re7e4 Qa5a1+ Kd1c2 Qa1a2+ Kc2c3 Qa2a5+ Kc3b3 Qa5b5+ Kb3c2 Kg6h7 Kc2d2 Qb5a5+ Kd2d3 Qa5a3+ Kd3c2 Qa3a2+ Kc2c1
28 05:39 210.601.352 621.635 +0.05 Rg8f8 Qh4g5+ Kg2f2 Qg5g3+ Kf2f1 Qg3h3+ Kf1e1 Qh3g2 Rf8h8+ Kh6g7 Rh8xh5 Qg2g6 Rh5e5 Qg6g1+ Ke1d2 Qg1d4+ Kd2c2 Qd4a4+ Kc2b2 Qa4d1 Re5e8 Qd1d4+ Kb2b3 Qd4d5+ Kb3a3 Qd5c4 Re8e7+ Kg7g6 Ka3b2 Qc4b4+ Kb2c2 Qb4a5 Re7e4 Qa5a2+ Kc2c3 Qa2a1+ Kc3c4 Qa1c1+ Kc4b3 Qc1d1+ Kb3b2 Qd1d2+ Kb2b1 Qd2c3 Bd6xf4 Qc3b3+ Kb1c1 Qb3c3+ Kc1d1 Qc3xc5 Bf4d2
28 05:47 215.733.526 620.916 +0.05 Rg8f8 Qh4g5+ Kg2f2 Qg5g3+ Kf2f1 Qg3h3+ Kf1e1 Qh3g2 Rf8h8+ Kh6g7 Rh8xh5 Qg2g6 Rh5e5 Qg6g1+ Ke1d2 Qg1d4+ Kd2c2 Qd4a4+ Kc2b2 Qa4d1 Re5e8 Qd1d4+ Kb2b3 Qd4d5+ Kb3a3 Qd5c4 Re8e7+ Kg7g6 Ka3b2 Qc4b4+ Kb2c2 Qb4a5 Re7e4 Qa5a2+ Kc2c3 Qa2a1+ Kc3c4 Qa1c1+ Kc4b3 Qc1d1+ Kb3b2 Qd1d2+ Kb2b1 Qd2c3 Bd6xf4 Qc3b3+ Kb1c1 Qb3c3+ Kc1d1 Qc3xc5 Bf4d2
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Martin Hertz
Posts: 61
Joined: Wed Mar 14, 2012 9:43 pm

Re: What engine can see the best move Bf8+!

Post by Martin Hertz »

I've tested some DOS programs and with one exception none of them was able to find the solution within 1 hour.
CST DOS finds the solution immediately, but interestingly CST II not in a reasonable time.
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User avatar
Master Om
Posts: 449
Joined: Wed Nov 24, 2010 10:57 am
Location: INDIA

Re: What engine can see the best move Bf8+!

Post by Master Om »

pichy wrote:
Houdini wrote:[D]6R1/8/2pB3k/2P4p/5p1q/5P2/4P1K1/8 w - - 0 1
Jorge, interesting position. It's actually not about "horizon effect" or "superiority in long term calculation", this is a zugzwang problem which may cause a problem to engines because of null moves.
Here's Houdini's take, using 3 threads on a Core i5-750:

Code: Select all

6R1/8/2pB3k/2P4p/5p1q/5P2/4P1K1/8 w - -

Engine: Houdini DEV 3T (2048 MB)
by Robert Houdart

4/14   0:00   0.00     1.Be5 Kh7 2.Rg7+ Kh6 3.Rg8 Kh7 (1.369) 
...
11/24  0:00   -0.14    1.Rf8 Qe1 2.Bxf4+ Kg6 3.Re8 Qc3 
                       4.Bd6 Qc4 5.Re4 Qa2 6.Kf2 Kf5 7.Re5+ Kg6 (98.576) 3520 
...
22/43  0:02   0.00     1.Rf8 Qe1 2.Bxf4+ Kg6 3.Re8 Qc3 
                       4.Bd6 Qc4 5.e4 Qe2+ 6.Kg3 Qe1+ 7.Kg2 Qe3 
                       8.Re6+ Kf7 9.Re7+ Kf6 10.Re5 Qe2+ 
                       11.Kg3 Qe1+ 12.Kg2 Qd2+ 13.Kg3 Kg6 
                       14.Re6+ (14.155.617) 6553 
...
32/59  0:39   0.00     1.Rf8 Qe1 2.Bxf4+ Kg6 3.Re8 Qc3 
                       4.Bd6 Qc4 5.e4 Qe2+ 6.Kg3 Qe1+ 7.Kg2 Qe3 
                       8.Re6+ Kf7 9.Re7+ Kf6 10.Re5 Qe2+ 
                       11.Kg3 Qe1+ 12.Kf4 Qc1+ 13.Kg3 Qg1+ 
                       14.Kf4 (275.723.867) 6897 

32/60  0:52   +0.04++  1.Bf8+ (364.867.951) 6992 

32/60  0:54   +0.14++  1.Bf8+ (380.915.045) 7013 

32/64  0:56   +0.37++  1.Bf8+ (399.304.568) 7033 

32/66  0:59   +1.17++  1.Bf8+ (422.345.062) 7056 

32/66  1:04   +4.25++  1.Bf8+ (455.314.294) 7102 

32/79  1:49   +12.34++ 1.Bf8+ (858.348.298) 7844 

32/81  1:50   +12.31   1.Bf8+ Kh7 2.Rg7+ Kh8 3.Be7 Qe1 
                       4.Bf6 Qxe2+ 5.Kh1 Qc4 6.Ba1 h4 7.Bf6 Qe6 
                       8.Bd4 Qc4 9.Ba1 h3 10.Bf6 Qe6 11.Bd4 Qh6 
                       12.Rg6+ Kh7 13.Rxh6+ Kxh6 14.Kh2 (871.642.788) 7852 

33/81  1:53   +12.31   1.Bf8+ Kh7 2.Rg7+ Kh8 3.Be7 Qe1 
                       4.Bf6 Qxe2+ 5.Kh1 Qc4 6.Ba1 h4 7.Bf6 Qe6 
                       8.Bd4 Qc4 9.Ba1 h3 10.Bf6 Qe6 11.Bd4 Qh6 
                       12.Rg6+ Kh7 13.Rxh6+ Kxh6 14.Kh2 (895.335.546) 7862
How many human players would find a win in this position in less than a minute?
Your program is in a class by itself, simply amazing :shock:
http://www.youtube.com/watch?v=HeOQc_TBMbg

But Zappa is not bad either!!!!.



New game
[D]6R1/8/2pB3k/2P4p/5p1q/5P2/4P1K1/8 w - - 0 1

Analysis by Zappa Mexico II x64:

1.Bf8+ Kh7 2.Rg7+ Kh8 3.Be7 Qe1 4.Bf6 Qxe2+ 5.Kh1 Qe6 6.Bd4 Qc4 7.Bb2 Qa2 8.Bf6 Qe6
= (0.00) Depth: 18/52 00:01:51 622mN, tb=23955
(Prakash, Bhubaneswar 13.04.2012)
Always Expect the Unexpected
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tano-urayoan
Posts: 638
Joined: Thu Aug 30, 2007 8:23 pm
Location: San Juan, Puerto Rico

Re: What engine can see the best move Bf8+!

Post by tano-urayoan »

pichy wrote:Komodo3-32
And why you keep using and bashing a bugged version of Komodo?
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pichy
Posts: 2564
Joined: Thu Mar 09, 2006 3:04 am

Re: What engine can see the best move Bf8+!

Post by pichy »

tano-urayoan wrote:
pichy wrote:Komodo3-32
And why you keep using and bashing a bugged version of Komodo?[/quote

At this moment there is no version of Komodo that can solve this position, Unless Don Dailey is working on his latest devepolment program to include the Null Pruning heuristic algorithm or create a patch similar to the one created for Stockfish 2.2.2 :wink:
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pichy
Posts: 2564
Joined: Thu Mar 09, 2006 3:04 am

Re: What engine can see the best move Bf8+!

Post by pichy »

tano-urayoan wrote:
pichy wrote:Komodo3-32
And why you keep using and bashing a bugged version of Komodo?[/quote

At this moment there is no version of Komodo that can solve this position, Unless Don Dailey is working on his latest development program to include the Null Pruning heuristic algorithm or create a patch similar to the one created for Stockfish 2.2.2 :wink:

http://www.talkchess.com/forum/viewtopi ... 17&t=43235
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User avatar
Graham Banks
Posts: 41423
Joined: Sun Feb 26, 2006 10:52 am
Location: Auckland, NZ

Re: What engine can see the best move Bf8+!

Post by Graham Banks »

tano-urayoan wrote:
pichy wrote:Komodo3-32
And why you keep using and bashing a bugged version of Komodo?
Komodo 3 32-bit is only about 20 ELO weaker than Komodo 4 32-bit. How is it bugged?
gbanksnz at gmail.com
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lech
Posts: 1136
Joined: Sun Feb 14, 2010 10:02 pm

Re: What engine can see the best move Bf8+!

Post by lech »

The good result of Houdini and Critter can be accidental. It seems that both the engines are not experts in zugzwang positions.
Stockfish can solve it on a very high depth (time) thanks to problems with VALUE_DRAW = 0;
My Sting solves it in 19 mintes on a very slow computer.

[d] 6R1/8/2pB3k/2P4p/5p1q/5P2/4P1K1/8 w - - 0 1

Sting SF 2.0 (beta):

Code: Select all

 
 33/46	09:11	 493.008.329	894.091	 0,00	Rg8e8 Qh4g3+ Kg2f1 Qg3h3+ Kf1g1 Kh6g6 Bd6xf4 Qh3h4 Bf4d6 Kg6f7 Re8e4 Qh4e1+ Kg1g2 h5h4 Re4e7+ Kf7f6 Re7e8 Qe1c1 Re8e4 h4h3+ Kg2xh3 Qc1f1+ Kh3g4 Qf1g1+ Bd6g3 Qg1xc5 Bg3h4+ Kf6f7 Re4e7+ Kf7g6 Re7e6+ Kg6f7 Re6f6+ Kf7g7
  34+	19:00	 887.273.483	777.766	+0,08	Bd6f8+ Kh6h7 Rg8g7+ Kh7h8 Bf8e7 Qh4e1 Be7f6 Qe1xe2+ Kg2h1 Qe2c4 Bf6a1 h5h4 Ba1f6 Qc4e6 Bf6d4 Qe6c4 Bd4a1 h4h3 Ba1f6 Qc4e6 Bf6d4 Qe6c4 Bd4a1 h3h2 Ba1f6 Qc4e6 Bf6d4 Qe6c4 Bd4a1
  34+	19:01	 887.722.040	777.648	+0,16	Bd6f8+ Kh6h7 Rg8g7+ Kh7h8 Bf8e7 Qh4e1 Be7f6 Qe1xe2+ Kg2h1 Qe2c4 Bf6a1 h5h4 Ba1f6 Qc4e6 Bf6d4 Qe6c4 Bd4a1 h4h3 Ba1f6 Qc4e6 Bf6d4 Qe6c4 Bd4a1 h3h2 Ba1f6 Qc4e6 Bf6d4 Qe6c4 Bd4a1
  34+	19:02	 888.489.821	777.511	+0,28	Bd6f8+ Kh6h7 Rg8g7+ Kh7h8 Bf8e7 Qh4e1 Be7f6 Qe1c1 Kg2h2 Qc1c4 Kh2h1 Qc4c2 Bf6a1 Qc2c4 e2e4 f4xe3/ep Rg7g4+
  34+	19:05	 890.489.703	777.094	+0,73	Bd6f8+ Kh6h7 Rg8g7+ Kh7h8 Bf8e7 Qh4e1 Be7f6 Qe1c1 Kg2h2 Qc1c4 Kh2h1 Qc4c2 Bf6a1 Qc2c4 e2e4 f4xe3/ep Rg7g4+
  34+	19:06	 891.013.252	777.000	+1,14	Bd6f8+ Kh6h7 Rg8g7+ Kh7h8 Bf8e7 Qh4e1 Be7f6 h5h4 Kg2h2
  34+	19:11	 894.206.774	776.589	+2,67	Bd6f8+ Kh6h7 Rg8g7+ Kh7h8 Bf8e7 Qh4e1 Be7f6 h5h4 Kg2h2
  34+	19:19	 900.172.186	776.114	+4,04	Bd6f8+ Kh6h7 Rg8g7+ Kh7h8 Bf8e7 Qh4e1 Be7f6 Qe1xe2+ Kg2h1 Qe2e3 Rg7e7+ Kh8g8 Re7xe3 f4xe3 Kh1g2 Kg8f7 Bf6d4 e3e2 Kg2f2 h5h4 Kf2xe2 Kf7g6 Ke2f2 Kg6h5 Kf2g2 Kh5g5 Bd4e3+ Kg5f6 Kg2h3 Kf6e5 Kh3xh4 Ke5e6 Kh4g4 Ke6d5 f3f4 Kd5e6 f4f5+ Ke6e5 Kg4g5
  34+	19:32	 909.108.248	775.679	+6,09	Bd6f8+ Kh6h7 Rg8g7+ Kh7h8 Bf8e7 Qh4e1 Be7f6 Qe1xe2+ Kg2h1 Qe2xf3+ Kh1h2 Qf3e3 Bf6a1 h5h4 Ba1b2 Qe3xc5 Rg7g5+
 34/55	19:38	 913.254.956	775.258	+6,98	Bd6f8+ Kh6h7 Rg8g7+ Kh7h8 Bf8e7 Qh4e1 Be7f6 Qe1xe2+ Kg2h1 Qe2e6 Bf6d4 Qe6c4 Bd4a1 h5h4 Ba1f6 Qc4e6 Bf6d4 Qe6c4 Bd4a1 h4h3 Ba1f6 Qc4e6 Bf6d4 Qe6c4 Bd4a1 h3h2 Ba1f6 Qc4e6 Bf6d4 Qe6h6 Rg7g6+ Kh8h7 Rg6xh6+ Kh7xh6 Kh1xh2 Kh6g5 Kh2h3 Kg5f5 Kh3h4 Kf5e6 Kh4g4 Ke6d7 Kg4xf4 Kd7c8 Bd4e3 Kc8b7 Kf4g4 Kb7a6 f3f4 Ka6b7 f4f5
I modified this position to try to prove that the result of Houdini and Critter can be accidental.

[d] 7k/6R1/2p5/2P4p/5p1q/5P2/1B2P3/6K1 b - - 0 1

After 1...Qe1+ 2.Kh2 Qh4+ 3.Kg2 Qe1 4.Bf6 it leads to known position from previous solution.
But now, the main zugzwang position
[d] 7k/6R1/2p2B2/2P4p/5p2/5P2/4P1K1/4q3 b - - 0 1
appears after the logic move Bf6.

Sting solves it quickly.

[d] 7k/6R1/2p5/2P4p/5p1q/5P2/1B2P3/6K1 b - - 0 1

Sting SF 2.0 (beta):

Code: Select all

 37/26	01:48	  73.698.635	677.588	 0,00	Qh4e1+ Kg1h2 Qe1h4+ Kh2g1
  38-	01:56	  79.491.692	682.695	-0,08	Qh4e1+ Kg1h2 Qe1h4+ Kh2g2 Qh4e1 Bb2f6 Qe1xe2+ Kg2h1 Qe2e6 Bf6d4 Qe6c4 Bd4a1 h5h4 Ba1f6 Qc4e6 Bf6b2 Qe6a2 Bb2d4 Qa2c4 Bd4a1 h4h3 Ba1f6 Qc4e6 Bf6d4 Qe6c4 Bd4a1 h3h2 Ba1f6 Qc4e6 Bf6d4 Qe6c4 Bd4a1
  38-	01:57	  80.048.240	682.987	-0,16	Qh4e1+ Kg1h2 Qe1h4+ Kh2g2 Qh4e1 Bb2f6 Qe1xe2+ Kg2h1 Qe2e6 Bf6d4 Qe6c4 Bd4a1 h5h4 Ba1f6 Qc4e6 Bf6b2 Qe6a2 Bb2d4 Qa2c4 Bd4a1 h4h3 Ba1f6 Qc4e6 Bf6d4 Qe6c4 Bd4a1 h3h2 Ba1f6 Qc4e6 Bf6d4 Qe6c4 Bd4a1
  38-	02:01	  83.281.432	684.474	-0,74	Qh4e1+ Kg1h2 Qe1h4+ Kh2g2 Qh4e1 Bb2f6 Qe1xe2+ Kg2h1 Qe2e6 Bf6d4 Qe6c4 Bd4a1 h5h4 Ba1f6 Qc4e6 Bf6b2 Qe6a2 Bb2d4 Qa2c4 Bd4a1 h4h3 Ba1f6 Qc4e6 Bf6d4 Qe6c4 Bd4a1 h3h2 Ba1f6 Qc4e6 Bf6d4 Qe6c4 Bd4a1
  38-	02:05	  85.831.229	685.536	-1,15	Qh4e1+ Kg1h2 Qe1h4+ Kh2g2 Qh4e1 Bb2f6 Qe1c1 Kg2h2 Qc1c4 Bf6b2 Qc4a2 Bb2d4 Qa2c4 Bd4a1 Qc4c2 Kh2h1 Qc2c4 e2e4 h5h4 Ba1f6 h4h3 Bf6a1 h3h2 Ba1f6 Qc4e6 Bf6d4 Qe6c4 Bd4a1 Qc4xc5 Rg7g5+
  38-	02:12	  91.339.350	689.514	-1,76	Qh4e1+ Kg1h2 Qe1h4+ Kh2g2 Qh4e1 Bb2f6 Qe1xe2+ Kg2h1 Qe2e6 Bf6d4 Qe6c4 Bd4a1 h5h4 Ba1f6 Qc4e6 Bf6d4 Qe6c4 Bd4a1 h4h3 Ba1f6 Qc4e6 Bf6d4 Qe6c4 Bd4a1 h3h2 Ba1f6 Qc4e6 Bf6d4 Qe6c4 Bd4a1
  38-	02:16	  94.249.334	690.471	-2,67	Qh4e1+ Kg1h2 Qe1h4+ Kh2g2 Qh4e1 Bb2f6 Qe1c1 Kg2h2 Qc1c2 Bf6a1 Qc2c4 Kh2h1 Qc4c2 e2e4 Qc2c4 Ba1f6 Qc4e6 e4e5 Qe6c4 e5e6 Qc4xe6 Bf6d4 Qe6c4 Bd4a1 h5h4 Ba1f6 Qc4e6 Bf6d4 Qe6c4 Bd4a1 h4h3 Ba1f6 Qc4e6 Bf6d4 Qe6c4 Bd4a1 h3h2 Ba1f6 Qc4e6 Bf6d4 Qe6c4 Bd4a1
  38-	02:19	  96.722.871	691.569	-4,04	Qh4e1+ Kg1h2 Qe1h4+ Kh2g2 Qh4e1 Bb2f6 Qe1c1 Kg2h2 Qc1c2 Bf6a1 Qc2c4 Kh2h1 Qc4c2 e2e4 Qc2c4 Ba1f6 Qc4e6 e4e5 Qe6c4 e5e6 Qc4xe6 Bf6d4 Qe6c4 Bd4a1 h5h4 Ba1f6 Qc4e6 Bf6d4 Qe6c4 Bd4a1 h4h3 Ba1f6 Qc4e6 Bf6d4 Qe6c4 Bd4a1 h3h2 Ba1f6 Qc4e6 Bf6d4 Qe6c4 Bd4a1
  38-	02:39	 110.893.568	697.373	-6,09	Qh4e1+ Kg1h2 Qe1h4+ Kh2g2 Qh4e1 Bb2f6 Qe1xe2+ Kg2h1 Qe2e6 Bf6d4 Qe6c4 Bd4a1 h5h4 Ba1f6 Qc4e6 Bf6d4 Qe6c4 Bd4a1 h4h3 Ba1f6 Qc4e6 Bf6d4 Qe6c4 Bd4a1 h3h2 Ba1f6 Qc4e6 Bf6d4 Qe6h6 Rg7g6+ Kh8h7 Rg6xh6+ Kh7xh6 Kh1xh2 Kh6h7 Kh2h3 Kh7g6 Kh3g4 Kg6f7 Kg4xf4 Kf7g6 Kf4g3 Kg6f5 Bd4e3 Kf5e5 f3f4+ Ke5f5 Kg3f3 Kf5g6 Kf3g4 Kg6h6 f4f5+ Kh6g7 Kg4g5 Kg7g8 Be3d4 Kg8f7 f5f6 Kf7f8 Kg5g6 Kf8g8 f6f7+ Kg8f8 Bd4g7+
  38-	03:06	 130.786.713	700.679	-9,17	Qh4e1+ Kg1h2 Qe1h4+ Kh2g2 Qh4e1 Bb2f6 Qe1xe2+ Kg2h1 Qe2e6 Bf6d4 Qe6c4 Bd4a1 h5h4 Ba1f6 Qc4e6 Bf6d4 Qe6c4 Bd4a1 h4h3 Ba1f6 Qc4e6 Bf6d4 Qe6c4 Bd4a1 h3h2 Ba1f6 Qc4e6 Bf6d4 Qe6c4 Bd4a1 Qc4b5 Rg7b7+ Kh8g8 Rb7xb5 c6xb5 c5c6
 38/58	03:11	 134.104.611	701.541	-7,75	Qh4e1+ Kg1h2 Qe1h4+ Kh2g2 Qh4e1 Bb2f6 Qe1xe2+ Kg2h1 Qe2e6 Bf6d4 Qe6c4 Bd4a1 h5h4 Ba1f6 Qc4e6 Bf6d4 Qe6c4 Bd4a1 h4h3 Ba1f6 Qc4e6 Bf6d4 Qe6c4 Bd4a1 h3h2 Ba1f6 Qc4e6 Bf6d4 Qe6h6 Rg7g6+ Kh8h7 Rg6xh6+ Kh7xh6 Kh1xh2 Kh6h7 Bd4e5 Kh7h6 Be5xf4+ Kh6g7 Bf4g5 Kg7f7 Bg5h4 Kf7e8 Kh2h3 Ke8d7 Bh4g5 Kd7c8 f3f4 Kc8c7 f4f5 Kc7d7 Kh3g4 Kd7c7 f5f6 Kc7d7 f6f7
What about others ? :D
Maybe, I can't be friendly, but let me be useful.
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gladius
Posts: 568
Joined: Tue Dec 12, 2006 10:10 am
Full name: Gary Linscott

Re: What engine can see the best move Bf8+!

Post by gladius »

lech wrote:What about others ? :D
Well, with the Stockfish modifications posted above (which I'm still testing to try and find a +ELO change), here is what it looks like:

Code: Select all

Analysis by Stockfish 120410 64bit 326 64bit:

1...Qe1+ 2.Kh2 Qh4+ 3.Kg1 
  =  (0.00)   Depth: 32/20   00:00:02  6075kN
1...Qe1+ 2.Kh2 Qh4+ 3.Kg2 Qe1 4.Bf6 Qc1 5.Kh2 Qc2 6.Ba1 h4 7.Kh1 Qc4 8.e4 h3
9.Bf6 Qe6 10.e5 Qc4 11.e6 Qxe6 12.Bd4 Qc4 13.Ba1 h2 14.Bf6 Qe6 15.Bd4 Qc4 16.Ba1 
  =  (0.08)   Depth: 33/43   00:00:02  7868kN
1...Qe1+ 2.Kh2 Qh4+ 3.Kg2 Qe1 4.Bf6 Qc1 5.Kh2 Qc2 6.Ba1 h4 7.Kh1 h3 8.Kh2 Qc4 9.Bf6 Qc2
10.Bd4 Qd1 11.Bb2 Qc2 12.Bf6 Qc4 13.e4 Qe6 14.e5 
  =  (0.16)   Depth: 33/45   00:00:03  11101kN
1...Qe1+ 2.Kh2 Qh4+ 3.Kg2 Qe1 4.Bf6 Qc1 5.Kh2 Qc2 6.Ba1 Qc4 7.Kh1 Qc2 8.e4 Qc4 9.Bf6 Qe6
10.e5 Qc4 11.Kh2 Qxc5 12.e6 Qf5 13.Ba1 
  ²  (0.28)   Depth: 33/54   00:00:03  11702kN
1...Qe1+ 2.Kh2 Qh4+ 3.Kg2 Qe1 4.Bf6 Qc1 5.Kh2 Qc2 6.Ba1 Qc4 7.Kh1 Qc2 8.e4 Qc4 9.Bf6 Qe6
10.e5 Qc4 11.Kh2 Qc3 12.Kh3 Qxc5 13.Kh4 Qe3 14.Kg5 c5 15.Kh6 

...

  +-  (85.58)   Depth: 37/77   00:01:27  263mN
1...Qe1+ 2.Kh2 Qh4+ 3.Kg2 Qe1 4.Bf6 Qxe2+ 5.Kh1 Qe6 6.Bd4 Qc4 7.Ba1 h4 8.Bf6 Qe6 9.Bd4 Qc4
10.Ba1 h3 11.Bf6 Qe6 12.Bd4 Qc4 13.Ba1 h2 14.Bf6 Qe6 15.Bd4 Qe3 16.Rd7+ Kg8 17.Bxe3
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