WAC 100

Discussion of chess software programming and technical issues.

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Dann Corbit
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Location: Redmond, WA USA

Re: WAC 100

Post by Dann Corbit »

Texel using MPV:3 found that Be3 is no worse than Mate in 42.

Code: Select all

     25	06:30	4,445,666,578	11,393,389	+M42	Be3 Bb6 Bd2 Bc7 b6+ Bxb6 Kb5 Bd8 Be3 Ka8 Kxc5 Ba5 Kc6 Bc3 c5 Bb2 Kb5 Ba3 c6 Bd6 Kc4 Kb8 Kd5 Bc7 Ke6 Ka8 Kd7 Ba5 a7 Bb6 Bc1 Kxa7 c7 Bxc7 Kxc7 Ka8 Bd2 Ka7 Be3+ Ka6 Kc6 Ka5 Kd7 Kb4 Bd2+ Kc4 Ke6 Kd3 Kxf5 Kxd2 Kxf6 Kd3 Kg6 Ke4 Kxh5 Kf5 Kh6 Ke4 Kg5 Kd5 Kg6 Kc4 f5 Kb3 h5 Ka2 f6 Ka1 h6 Kb1 f7 Ka1 f8Q Kb2 Qf3 Ka1 Qe2 Kb1 h7 Ka1 h8Q+ Kb1 Qeb2+
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jdart
Posts: 4366
Joined: Fri Mar 10, 2006 5:23 am
Location: http://www.arasanchess.org

Re: WAC 100

Post by jdart »

There have been many corrections over the years.

The version I use is here:

https://github.com/jdart1/arasan-chess/ ... wacnew.epd
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JVMerlino
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Location: San Francisco, California

Re: WAC 100

Post by JVMerlino »

jdart wrote:There have been many corrections over the years.

The version I use is here:

https://github.com/jdart1/arasan-chess/ ... wacnew.epd
And yours also shows both b6 and Be3 as acceptable answers. Thanks, Jon and Dann, for the confirmation.
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emadsen
Posts: 434
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Location: Oak Park, IL, USA
Full name: Erik Madsen

Re: WAC 100

Post by emadsen »

MadChess finds b6 at depth 27 and 4.1M nodes.

Code: Select all

PS C:\Users\ekmad\Documents\Chess\Engines\MadChess\MadChess 2.2> .\MadChess.Engine.exe
position fen 8/k1b5/P4p2/1Pp2p1p/K1P2P1P/8/3B4/8 w - - 0 1

go infinite
info multipv 1 depth 1 seldepth 3 time 171 nodes 43 score cp 456 nps 251 pv d2e3
info multipv 1 depth 2 seldepth 4 time 182 nodes 92 score cp 478 nps 506 pv d2e3 c7b6
info multipv 1 depth 3 seldepth 6 time 184 nodes 259 score cp 459 nps 1408 pv d2e3 c7d6 a4a5
info multipv 1 depth 4 seldepth 7 time 190 nodes 523 score cp 466 nps 2751 pv d2e3 c7d6 a4b3 d6e7
info multipv 1 depth 5 seldepth 8 time 192 nodes 1001 score cp 488 nps 5213 pv d2e3 c7d6 a4b3 d6e7 b3c3
info multipv 1 depth 6 seldepth 8 time 204 nodes 1634 score cp 456 nps 8026 pv d2e3 c7d6 a4b3 d6e7 b3c3 e7d6
info multipv 1 depth 7 seldepth 10 time 208 nodes 2338 score cp 472 nps 11254 pv d2e3 c7d6 a4b3 d6e7 b3c3 e7d6 c3d3
info multipv 1 depth 8 seldepth 10 time 212 nodes 3761 score cp 472 nps 17775 pv d2e3 c7d6 a4b3 d6f8 b3c3 f8e7 c3d3 e7d6
info multipv 1 depth 9 seldepth 12 time 216 nodes 5508 score cp 469 nps 25493 pv d2e3 c7d6 a4b3 d6f8 b3c3 f8e7 c3d3 e7d6 e3d2
info multipv 1 depth 10 seldepth 12 time 225 nodes 8644 score cp 476 nps 38346 pv d2e3 c7d6 a4b3 d6f8 b3c3 f8e7 c3d3 e7d6 e3d2 d6c7
info multipv 1 depth 11 seldepth 13 time 258 nodes 22323 score cp 479 nps 86374 pv a4b3 c7d6 d2e3 a7b8 e3d2 b8a7 b3c3 b6a5 c3d3 a5d2 d3d2
info multipv 1 depth 12 seldepth 15 time 282 nodes 29557 score cp 469 nps 104857 pv a4b3 c7d6 d2e3 d6f8 b3c3 f8e7 e3d2 e7d6 c3c2 d6e7 c2d3 e7d6
info multipv 1 depth 13 seldepth 16 time 316 nodes 44613 score cp 502 nps 141311 pv a4b3 c7d6 b3c2 d6e7 c2d3 e7d6 d3e3 d6f8 d2c3 f8e7 c3b2 e7d8 b2c3
info multipv 1 depth 14 seldepth 17 time 336 nodes 53362 score cp 476 nps 158825 pv a4b3 c7d6 b3c2 d6e7 c2d3 e7d6 d3e3 d6f8 d2c3 f8e7 e3d3 e7d6 c3d2 d6c7
info multipv 1 depth 15 seldepth 18 time 382 nodes 74776 score cp 479 nps 196003 pv a4b3 c7d6 b3c2 d6c7 c2d3 c7b6 d3e3 b6d8 d2c3 d8e7 e3d3 d8e7 d3e3 e7d6 b2c1
info multipv 1 depth 16 seldepth 19 time 420 nodes 92802 score cp 504 nps 220789 pv a4b3 c7d6 b3c2 d6c7 c2d3 c7b6 d3e3 b6c7 d2c3 c7d8 e3f3 d8e7 c3a5 e7d6 f3e3 d6c7
info multipv 1 depth 17 seldepth 20 time 462 nodes 112201 score cp 504 nps 243086 pv a4b3 c7d6 b3c2 d6c7 c2d3 c7b6 d3e3 b6c7 d2c3 c7d8 e3f3 d8e7 c3a5 e7f8 a5d8 f8g7 f3e3
info multipv 1 depth 18 seldepth 21 time 575 nodes 169505 score cp 471 nps 294661 pv a4b3 c7d6 b3c2 d6c7 c2d3 c7b6 d3e3 b6c7 d2c3 c7d8 e3f3 a7b8 c3d2 b8a7 f3e2 d8e7 e2e3 e7d8
info multipv 1 depth 19 seldepth 21 time 641 nodes 201525 score cp 472 nps 314474 pv a4b3 c7d6 b3c2 d6c7 c2d3 c7b6 d3e3 b6c7 d2c3 c7d8 e3f3 a7b8 c3d2 b8a7 f3e2 d8e7 e2d3 e7d6 d2e3
info multipv 1 depth 20 seldepth 22 time 800 nodes 282950 score cp 471 nps 353806 pv a4b3 c7d6 b3c2 d6c7 c2d3 c7b6 d3e3 b6c7 d2c3 c7d8 e3f3 a7b8 c3d2 b8a7 f3e2 d8b6 e2d3 b6c7 d3e3 c7d8
info multipv 1 depth 21 seldepth 24 time 957 nodes 363320 score cp 502 nps 379744 pv a4b3 c7d6 b3c2 d6c7 c2d3 c7b6 d3e3 b6c7 d2c3 c7d8 e3f3 a7b8 c3d2 b8a7 f3e2 d8b6 d2c3 b6c7 e2f3 c7d8 f3e3
info multipv 1 depth 22 seldepth 25 time 1226 nodes 503392 score cp 491 nps 410560 pv a4b3 c7d6 b3c2 d6c7 c2d3 c7b6 d3e3 b6c7 d2c3 c7d8 e3f3 a7b8 c3d2 b8a7 f3e2 d8b6 d2c3 b6d8 e2e3 d8e7 e3d3 e7d6
info multipv 1 depth 23 seldepth 26 time 1432 nodes 612716 score cp 491 nps 427790 pv a4b3 c7d6 b3c2 d6c7 c2d3 c7b6 d3e3 b6c7 d2c3 c7d8 e3f3 a7b8 c3d2 b8a7 f3e2 d8b6 d2c3 b6d8 e2e3 d8e7 c3b2 e7d8 e3d3
info multipv 1 depth 24 seldepth 27 time 2085 nodes 956850 score cp 477 nps 458855 pv a4b3 c7d6 b3c2 d6c7 c2d3 c7b6 d3e3 b6c7 d2c3 c7d8 e3f3 a7b8 f3e2 b8a7 e2e3 a7a8 e3d2 a8a7 d2d3 d8c7 b2f6 e7d6 e2e3 d6e7
info multipv 1 depth 25 seldepth 27 time 2590 nodes 1215764 score cp 479 nps 469471 pv a4b3 c7d6 b3c2 d6c7 c2d3 c7b6 d3e3 b6c7 d2c3 c7d8 e3f3 a7b8 f3e2 b8a7 e2e3 a7b8 e3d3 b8a7 c3b2 d8e7 b2c1 e7d6 c1d2 d6c7 d2e3
info multipv 1 depth 26 seldepth 28 time 3459 nodes 1675422 score cp 472 nps 484312 pv a4b3 c7d6 b3c2 d6c7 c2d3 c7b6 d3e3 b6c7 d2c3 c7d8 e3f3 a7b8 f3e2 b8a7 e2e3 a7b8 e3d3 b8a7 c3b2 d8e7 b2c1 e7d6 c1d2 d6c7 d2e3 c7d6
info multipv 1 depth 27 seldepth 29 score lowerbound 522 time 6462 nodes 3181406 nps 492340
info multipv 1 depth 27 seldepth 29 score lowerbound 722 time 7248 nodes 3558390 nps 490953
info multipv 1 depth 27 seldepth 31 time 8544 nodes 4181250 score cp 780 nps 489389 pv b5b6 c7b6 a4b5 b6c7 d2e3 a7a8 b5c5 c7a5 c5b5 a5d8 b5c6 d8a5 c6d7 a8b8 d7e6 a5e1 e6f6 e1h4 f6f5 h4e1 f5e6 h5h4 f4f5 h4h3 f5f6 h3h2 f6f7
info multipv 1 depth 28 seldepth 31 score lowerbound 830 time 9416 nodes 4605749 nps 489154
info multipv 1 depth 28 seldepth 33 time 11661 nodes 5733004 score cp 951 nps 491628 pv b5b6 c7b6 a4b5 b6c7 d2e3 a7a8 b5c5 a8b8 c5b5 b8c8 b5c6 c7b8 a6a7 b8a7 e3a7 c8d8 c6d5 d8e7 a7d4 e7f7 c4c5 f7e7 c5c6 e7d8 d4f6 d8c8 f6d4 b6c7
info multipv 1 depth 29 seldepth 31 time 14177 nodes 7028065 score cp 983 nps 495744 pv b5b6 c7b6 a4b5 b6c7 d2e3 a7a8 b5c5 a8b8 c5b5 b8c8 b5c6 c8b8 c4c5 c7a5 c6b5 a5d8 c6d5 d8e7 a7d4 e7f7 c4c5 f7e7 c5c6 e7d8 d4f6 d8c8 f6e5 c8d8 e5d4
info multipv 1 depth 30 seldepth 33 time 16030 nodes 8031214 score cp 983 nps 501018 pv b5b6 c7b6 a4b5 b6c7 d2e3 a7a8 b5c5 a8b8 c5b5 b8c8 b5c6 c8b8 c4c5 c7a5 c6b5 a5d8 c6d5 d8e7 a7d4 e7f7 c4c5 f7e7 c5c6 e7d8 d4f6 d8c8 f6e5 c8d8 e5d4
My C# chess engine: https://www.madchess.net
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MikeB
Posts: 4889
Joined: Thu Mar 09, 2006 6:34 am
Location: Pen Argyl, Pennsylvania

Re: WAC 100

Post by MikeB »

Kempelen wrote:[D] 8/k1b5/P4p2/1Pp2p1p/K1P2P1P/8/3B4/8 w

What trick is needed to implement in order the engine to solve this puzzle? I have been trying to figure out what it is without success. My engine play stupid moves that lead to nothing, like Kb3 or Be3....

thanks
the yet to be released McBrain v2.1 ( a stockfish engine), no egtb used here.

current stockfish dev was about the same on my machine...

Code: Select all

info depth 36 seldepth 64 multipv 1 score mate 38 nodes 116901914 nps 31810044 hashfull 167 tbhits 0 time 3675 pv b5b6 c7b6 a4b5 b6c7 d2e3 a7a8 b5c5 c7b8 c5b5 b8d6 b5c6 d6c7 c6d7 c7b8 c4c5 a8a7 c5c6 a7a6 c6c7 b8c7 d7c7 a6b5 c7d7 b5c4 d7e6 c4d3 e3c1 d3c2 c1a3 c2d3 e6f5 d3e3 a3f8 e3e2 f8e7 e2d3 e7f6 d3c4 f6g7 c4d5 f5g5 d5e6 g5g6 e6d7 f4f5 d7d6 f5f6 d6c6 f6f7 c6b5 f7f8q b5c6 f8c8 c6b6 g6g5 b6b5 g5h5 b5b6
it does eventually drop down to mate-in-24 like Texel in under two minutes on my 12 core mac:

Code: Select all

info depth 70 seldepth 73 multipv 1 score mate 24 nodes 3452114006 nps 31301754 hashfull 972 tbhits 0 time 110285 pv b5b6 c7b6 a4b5 b6c7 d2e3 c7b8 e3c5 a7a8 c5e3 b8d6 c4c5 d6b8 c5c6 b8c7 b5c4 c7d8 c4d5 d8a5 d5e6 a5d8 e6d7 d8c7 e3c5 c7a5 c5e7 a8a7 e7d8 a7a6 d8a5 a6a5 c6c7 a5a4 c7c8q a4b3 d7d6 b3b2 c8c4 b2b1 d6d5 b1b2 d5d4 b2a3 c4b5 a3a2 d4c3 a2a1 b5b2
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MikeB
Posts: 4889
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Location: Pen Argyl, Pennsylvania

Re: WAC 100

Post by MikeB »

Dann Corbit wrote:Texel using MPV:3 found that Be3 is no worse than Mate in 42.

Code: Select all

     25	06:30	4,445,666,578	11,393,389	+M42	Be3 Bb6 Bd2 Bc7 b6+ Bxb6 Kb5 Bd8 Be3 Ka8 Kxc5 Ba5 Kc6 Bc3 c5 Bb2 Kb5 Ba3 c6 Bd6 Kc4 Kb8 Kd5 Bc7 Ke6 Ka8 Kd7 Ba5 a7 Bb6 Bc1 Kxa7 c7 Bxc7 Kxc7 Ka8 Bd2 Ka7 Be3+ Ka6 Kc6 Ka5 Kd7 Kb4 Bd2+ Kc4 Ke6 Kd3 Kxf5 Kxd2 Kxf6 Kd3 Kg6 Ke4 Kxh5 Kf5 Kh6 Ke4 Kg5 Kd5 Kg6 Kc4 f5 Kb3 h5 Ka2 f6 Ka1 h6 Kb1 f7 Ka1 f8Q Kb2 Qf3 Ka1 Qe2 Kb1 h7 Ka1 h8Q+ Kb1 Qeb2+

here's Be3 - no worse than mate in 25

Code: Select all

info depth 23 seldepth 32 multipv 1 score mate 25 nodes 1835437 nps 37457897 tbhits 0 time 49 pv d2e3 c7d6 a4a5 d6c7 b5b6 c7b6 a5b5 b6c7 e3c5 a7a8 c5e3 c7d6 c4c5 d6b8 c5c6 b8d6 b5c4 d6b8 c4d5 b8c7 d5e6 a8b8 e6d7 b8a8 e3c5 c7a5 c5e7 a8a7 e7d8 a5c7 d7c7 a7a6 c7d7 a6b5 c6c7 b5c5 c7c8q c5d4 d8b6 d4d3 c8c1 d3e2 c1c3 e2d1 c3b2 d1e1 b6e3 e1d1 b2d2
Kb3 also leads mate, which the original poster believed to be incorrect - not a good test position..

Code: Select all

info depth 57 seldepth 70 multipv 1 score mate 28 nodes 5646643993 nps 33837364 hashfull 959 tbhits 0 time 166876 pv a4b3 c7d8 b3a3 d8c7 a3a4 c7d6 a4a5 d6c7 b5b6 c7b6 a5b5 b6c7 d2e3 a7a8 b5c5 a8a7 c5b5 a7a8 c4c5 a8b8 c5c6 c7d6 b5c4 d6c7 c4d5 b8a8 d5e6 a8b8 e6d7 b8a8 e3c5 c7a5 c5e7 a8a7 e7d8 a5c7 d7c7 a7a6 c7d7 a6b5 c6c7 b5c5 c7c8q c5d4 c8c2 d4e3 d8b6 e3f3 c2f2 f3g4 b6a5 g4h3 a5e1 h3g4 f2g3
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bob
Posts: 20943
Joined: Mon Feb 27, 2006 7:30 pm
Location: Birmingham, AL

Re: WAC 100

Post by bob »

I do not see why these solutions are taking so long. WAC100 has been considered "easy" for 10 years now. I just ran this on my MacBook (pretty old 1.7ghz machine). I see this kind of time:

Code: Select all

          1     0.00          2.67   1. Be3                        
          1->   0.00          2.67   1. Be3                        
          2     0.00          2.67   1. Be3 Kb6                    
          2     0.00          2.67   1. Be3 Kb6                    
          2->   0.00          2.67   1. Be3 Kb6 (s=2)              
          3     0.00          2.54   1. Be3 Kb6 2. Kb3 (s=2)       
          3->   0.00          2.54   1. Be3 Kb6 2. Kb3 (s=2)       
          4     0.00          2.63   1. Be3 Kb6 2. Kb3 Bd6 (s=2)   
          4->   0.01          2.63   1. Be3 Kb6 2. Kb3 Bd6 (s=2)   
          5     0.01          2.75   1. Be3 Kb6 2. Kb3 Bd6 3. Kc3 (s=2)
          5->   0.01          2.75   1. Be3 Kb6 2. Kb3 Bd6 3. Kc3  
          6     0.01          2.97   1. Be3 Bd6 2. Kb3 Kb6 3. Kc3 Bc7
          6->   0.01          2.97   1. Be3 Bd6 2. Kb3 Kb6 3. Kc3 Bc7
          7     0.01          3.16   1. Be3 Bd6 2. Ka5 Bc7+ 3. b6+ Bxb6+ 4. Kb5
                                     Bc7 5. Bxc5+ Ka8
          7->   0.01          3.16   1. Be3 Bd6 2. Ka5 Bc7+ 3. b6+ Bxb6+ 4. Kb5
                                     Bc7 5. Bxc5+ Ka8
          8     0.01          3.13   1. Be3 Bd6 2. Ka5 Bc7+ 3. b6+ Bxb6+ 4. Kb5
                                     Bc7 5. Bxc5+ Ka8 6. Be3
          8->   0.01          3.13   1. Be3 Bd6 2. Ka5 Bc7+ 3. b6+ Bxb6+ 4. Kb5
                                     Bc7 5. Bxc5+ Ka8 6. Be3
          9     0.01          3.03   1. Be3 Bd6 2. Ka5 Bc7+ 3. b6+ Bxb6+ 4. Kb5
                                     Bc7 5. Bxc5+ Ka8 6. Be3 Bd6
          9->   0.01          3.03   1. Be3 Bd6 2. Ka5 Bc7+ 3. b6+ Bxb6+ 4. Kb5
                                     Bc7 5. Bxc5+ Ka8 6. Be3 Bd6
         10     0.01          3.04   1. Be3 Bb6 2. Kb3 Ka8 3. Kc3 Ba5+ 4. Kd3
                                     Bb6 5. Bf2 Ka7 6. Be3
         10->   0.01          3.04   1. Be3 Bb6 2. Kb3 Ka8 3. Kc3 Ba5+ 4. Kd3
                                     Bb6 5. Bf2 Ka7 6. Be3
         11     0.01          3.19   1. Be3 Bb6 2. Kb3 Ka8 3. Kc3 Ba5+ 4. Kc2
                                     Bb6 5. Kd3 Kb8 6. Kc3 Ka7
         11->   0.01          3.19   1. Be3 Bb6 2. Kb3 Ka8 3. Kc3 Ba5+ 4. Kc2
                                     Bb6 5. Kd3 Kb8 6. Kc3 Ka7
         12     0.02          3.06   1. Be3 Bb6 2. Kb3 Ka8 3. Kc3 Ba5+ 4. Kc2
                                     Bb6 5. Kd3 Ka7 6. Bf2 Kb8 7. Bg3 Ka7
         12->   0.02          3.06   1. Be3 Bb6 2. Kb3 Ka8 3. Kc3 Ba5+ 4. Kc2
                                     Bb6 5. Kd3 Ka7 6. Bf2 Kb8 7. Bg3 Ka7
         13     0.02          3.06   1. Be3 Bb6 2. Kb3 Ka8 3. Kc3 Ba5+ 4. Kc2
                                     Bb6 5. Kd3 Ka7 6. Bf2 Kb8 7. Bg3 Ka7
         13->   0.02          3.06   1. Be3 Bb6 2. Kb3 Ka8 3. Kc3 Ba5+ 4. Kc2
                                     Bb6 5. Kd3 Ka7 6. Bf2 Kb8 7. Bg3 Ka7
         14     0.02          3.04   1. Be3 Bb6 2. Kb3 Ka8 3. Kc3 Ba5+ 4. Kc2
                                     Bb6 5. Kb3 Kb8 6. Kc3 Ka8 7. Bd2 Ka7
                                     8. Be3
         14->   0.02          3.04   1. Be3 Bb6 2. Kb3 Ka8 3. Kc3 Ba5+ 4. Kc2
                                     Bb6 5. Kb3 Kb8 6. Kc3 Ka8 7. Bd2 Ka7
                                     8. Be3
         15     0.02          3.03   1. Be3 Bb6 2. Kb3 Ka8 3. Kc3 Kb8 4. Kc2
                                     Kc7 5. Kd3 Ba7 6. Bf2 Kb6 7. Kc3 Bb8
                                     8. Be3
         15->   0.02          3.03   1. Be3 Bb6 2. Kb3 Ka8 3. Kc3 Kb8 4. Kc2
                                     Kc7 5. Kd3 Ba7 6. Bf2 Kb6 7. Kc3 Bb8
                                     8. Be3
         16     0.03          3.13   1. Be3 Bb6 2. Kb3 Ka8 3. Kc3 Kb8 4. Kc2
                                     Ka8 5. Kd2 Kb8 6. Kc3 Ba7 7. Kd3 Kc7
                                     8. Bf2 Kb6
         16->   0.03          3.13   1. Be3 Bb6 2. Kb3 Ka8 3. Kc3 Kb8 4. Kc2
                                     Ka8 5. Kd2 Kb8 6. Kc3 Ba7 7. Kd3 Kc7
                                     8. Bf2 Kb6
         17     0.03          3.09   1. Be3 Bb6 2. Kb3 Ka8 3. Kc3 Kb8 4. Kc2
                                     Ka8 5. Kd2 Kb8 6. Kc3 Ba7 7. Kd3 Kc7
                                     8. Bd2 Kb6 9. Bc3
         17->   0.03          3.09   1. Be3 Bb6 2. Kb3 Ka8 3. Kc3 Kb8 4. Kc2
                                     Ka8 5. Kd2 Kb8 6. Kc3 Ba7 7. Kd3 Kc7
                                     8. Bd2 Kb6 9. Bc3
         18     0.06          3.42   1. Be3 Bb6 2. Kb3 Ka8 3. Bc1 Ka7 4. Ba3
                                     Kb8 5. Kc2 Ka7 6. Kc3 Ka8 7. Kd3 Ka7
                                     8. Ke3 Ka8 9. Bb2 Bd8 10. Bc3 Ka7
         18->   0.06          3.42   1. Be3 Bb6 2. Kb3 Ka8 3. Bc1 Ka7 4. Ba3
                                     Kb8 5. Kc2 Ka7 6. Kc3 Ka8 7. Kd3 Ka7
                                     8. Ke3 Ka8 9. Bb2 Bd8 10. Bc3 Ka7
         19     0.06          3.42   1. Be3 Bb6 2. Kb3 Ka8 3. Bc1 Ka7 4. Ba3
                                     Kb8 5. Kc2 Ka7 6. Kc3 Ka8 7. Kd3 Ka7
                                     8. Ke3 Ka8 9. Bb2 Bd8 10. Bc3 Ka7
         19->   0.06          3.42   1. Be3 Bb6 2. Kb3 Ka8 3. Bc1 Ka7 4. Ba3
                                     Kb8 5. Kc2 Ka7 6. Kc3 Ka8 7. Kd3 Ka7
                                     8. Ke3 Ka8 9. Bb2 Bd8 10. Bc3 Ka7
         20     0.06          3.42   1. Be3 Bb6 2. Kb3 Ka8 3. Bc1 Ka7 4. Ba3
                                     Kb8 5. Kc2 Ka7 6. Kc3 Ka8 7. Kd3 Ka7
                                     8. Ke3 Ka8 9. Bb2 Bd8 10. Bc3 Ka7
         20->   0.06          3.42   1. Be3 Bb6 2. Kb3 Ka8 3. Bc1 Ka7 4. Ba3
                                     Kb8 5. Kc2 Ka7 6. Kc3 Ka8 7. Kd3 Ka7
                                     8. Ke3 Ka8 9. Bb2 Bd8 10. Bc3 Ka7
         21     0.07          3.27   1. Be3 Bb6 2. Kb3 Ka8 3. Bc1 Ka7 4. Ba3
                                     Kb8 5. Kc2 Ka7 6. Kc3 Ka8 7. Kd3 Kb8
                                     8. Ke3 Ka8 9. Bb2 Bd8 10. Bc3 Ka7 11. Kd3
         21->   0.07          3.27   1. Be3 Bb6 2. Kb3 Ka8 3. Bc1 Ka7 4. Ba3
                                     Kb8 5. Kc2 Ka7 6. Kc3 Ka8 7. Kd3 Kb8
                                     8. Ke3 Ka8 9. Bb2 Bd8 10. Bc3 Ka7 11. Kd3
         22     0.08          3.17   1. Be3 Bb6 2. Kb3 Ka8 3. Bc1 Ka7 4. Ba3
                                     Kb8 5. Kc2 Ka7 6. Kc3 Ka8 7. Kd3 Kb8
                                     8. Ke3 Ka8 9. Bb2 Bd8 10. Bc3 Ka7 11. Kd3
                                     Bc7
         22->   0.08          3.17   1. Be3 Bb6 2. Kb3 Ka8 3. Bc1 Ka7 4. Ba3
                                     Kb8 5. Kc2 Ka7 6. Kc3 Ka8 7. Kd3 Kb8
                                     8. Ke3 Ka8 9. Bb2 Bd8 10. Bc3 Ka7 11. Kd3
                                     Bc7
         23     0.09          3.06   1. Be3 Bb6 2. Kb3 Ka8 3. Bc1 Ka7 4. Ba3
                                     Kb8 5. Kc2 Ka7 6. Kc3 Ka8 7. Kd3 Kb8
                                     8. Ke3 Ka8 9. Bb2 Bd8 10. Bc3 Ka7 11. Kd3
                                     Be7 12. Ke3
         23     0.14          3.38   1. b6+ Bxb6 2. Kb5 Bc7 3. Be3 Ka8 4. Kxc5
                                     Ba5 5. Kb5 Bc7 6. c5 Kb8 7. Kc6 Ba5 8. Kd7
                                     Ka7 9. c6+ Kxa6 10. c7 Bxc7 11. Kxc7 Kb5
                                     12. Kd6 Kc4
         23->   0.14          3.38   1. b6+ Bxb6 2. Kb5 Bc7 3. Be3 Ka8 4. Kxc5
                                     Ba5 5. Kb5 Bc7 6. c5 Kb8 7. Kc6 Ba5 8. Kd7
                                     Ka7 9. c6+ Kxa6 10. c7 Bxc7 11. Kxc7 Kb5
                                     12. Kd6 Kc4 (s=2)
         24     0.19          5.37   1. b6+ Bxb6 2. Kb5 Bc7 3. Be3 Ka8 4. Kxc5
                                     Ba5 5. Kb5 Bc7 6. c5 Kb8 7. c6 Ka8 8. Bb6
                                     Bxf4 9. c7 Bxc7 10. Bxc7 Ka7 11. Bb6+ Ka8
                                     12. a7 f4 13. Kc6 (s=2)
         24->   0.19          5.37   1. b6+ Bxb6 2. Kb5 Bc7 3. Be3 Ka8 4. Kxc5
                                     Ba5 5. Kb5 Bc7 6. c5 Kb8 7. c6 Ka8 8. Bb6
                                     Bxf4 9. c7 Bxc7 10. Bxc7 Ka7 11. Bb6+ Ka8
                                     12. a7 f4 13. Kc6 (s=2)
         25     0.19          5.08   1. b6+ Bxb6 2. Kb5 Bc7 3. Be3 Ka8 4. Kxc5
                                     Ba5 5. Kb5 Bc7 6. c5 Kb8 7. c6 Ka8 8. Bb6
                                     Bxf4 9. c7 Bxc7 10. Bxc7 Ka7 11. Bb6+ Ka8
                                     12. a7 Kb7 13. Kc5 f4 (s=2)
         25->   0.19          5.08   1. b6+ Bxb6 2. Kb5 Bc7 3. Be3 Ka8 4. Kxc5
                                     Ba5 5. Kb5 Bc7 6. c5 Kb8 7. c6 Ka8 8. Bb6
                                     Bxf4 9. c7 Bxc7 10. Bxc7 Ka7 11. Bb6+ Ka8
                                     12. a7 Kb7 13. Kc5 f4 (s=2)
         26     0.20          5.31   1. b6+ Bxb6 2. Kb5 Bc7 3. Be3 Ka8 4. Kxc5
                                     Ba5 5. Kb5 Bc7 6. c5 Bd8 7. c6 Bc7 8. Bb6
                                     Bxf4 9. c7 Bxc7 10. Bxc7 Ka7 11. Bb6+ Ka8
                                     12. a7 Kb7 13. Kc5 f4 14. Kd5 (s=2)
         26->   0.20          5.31   1. b6+ Bxb6 2. Kb5 Bc7 3. Be3 Ka8 4. Kxc5
                                     Ba5 5. Kb5 Bc7 6. c5 Bd8 7. c6 Bc7 8. Bb6
                                     Bxf4 9. c7 Bxc7 10. Bxc7 Ka7 11. Bb6+ Ka8
                                     12. a7 Kb7 13. Kc5 f4 14. Kd5
         27     0.22          5.36   1. b6+ Bxb6 2. Kb5 Bc7 3. Be3 Ka8 4. Kxc5
                                     Ba5 5. Kb5 Bc7 6. c5 Bd8 7. c6 Bc7 8. Bb6
                                     Bxf4 9. c7 Bxc7 10. Bxc7 Ka7 11. Bb6+ Ka8
                                     12. a7 Kb7 13. Kc5 f4 14. Kd5 f3
         27->   0.22          5.36   1. b6+ Bxb6 2. Kb5 Bc7 3. Be3 Ka8 4. Kxc5
                                     Ba5 5. Kb5 Bc7 6. c5 Bd8 7. c6 Bc7 8. Bb6
                                     Bxf4 9. c7 Bxc7 10. Bxc7 Ka7 11. Bb6+ Ka8
                                     12. a7 Kb7 13. Kc5 f4 14. Kd5 f3
         28     0.24          5.62   1. b6+ Bxb6 2. Kb5 Bc7 3. Be3 Ka8 4. Kxc5
                                     Ba5 5. Kb5 Bc7 6. c5 Bb8 7. c6 Bd6 8. Bc5
                                     Bxf4 9. Bb6 Bg3 10. c7 Bxc7 11. Bxc7 Ka7
                                     12. Bb6+ Ka8 13. Bd8 f4 14. Bxf6 f3
                                     15. Bd4 Kb8 16. Kb6
         28->   0.24          5.62   1. b6+ Bxb6 2. Kb5 Bc7 3. Be3 Ka8 4. Kxc5
                                     Ba5 5. Kb5 Bc7 6. c5 Bb8 7. c6 Bd6 8. Bc5
                                     Bxf4 9. Bb6 Bg3 10. c7 Bxc7 11. Bxc7 Ka7
                                     12. Bb6+ Ka8 13. Bd8 f4 14. Bxf6 f3
                                     15. Bd4 Kb8 16. Kb6
         29     0.25          5.62   1. b6+ Bxb6 2. Kb5 Bc7 3. Be3 Ka8 4. Kxc5
                                     Ba5 5. Kb5 Bc7 6. c5 Bb8 7. c6 Bd6 8. Bc5
                                     Bxf4 9. Bb6 Bg3 10. c7 Bxc7 11. Bxc7 Ka7
                                     12. Bb6+ Ka8 13. Bd8 f4 14. Bxf6 f3
                                     15. Bd4 Kb8 16. Kb6
         29->   0.25          5.62   1. b6+ Bxb6 2. Kb5 Bc7 3. Be3 Ka8 4. Kxc5
                                     Ba5 5. Kb5 Bc7 6. c5 Bb8 7. c6 Bd6 8. Bc5
                                     Bxf4 9. Bb6 Bg3 10. c7 Bxc7 11. Bxc7 Ka7
                                     12. Bb6+ Ka8 13. Bd8 f4 14. Bxf6 f3
                                     15. Bd4 Kb8 16. Kb6
         30     0.26          5.62   1. b6+ Bxb6 2. Kb5 Bc7 3. Be3 Ka8 4. Kxc5
                                     Ba5 5. Kb5 Bc7 6. c5 Bb8 7. c6 Bd6 8. Bc5
                                     Bxf4 9. Bb6 Bg3 10. c7 Bxc7 11. Bxc7 Ka7
                                     12. Bb6+ Ka8 13. Bd8 f4 14. Bxf6 f3
                                     15. Bd4 Kb8 16. Kb6
         30->   0.27          5.62   1. b6+ Bxb6 2. Kb5 Bc7 3. Be3 Ka8 4. Kxc5
                                     Ba5 5. Kb5 Bc7 6. c5 Bb8 7. c6 Bd6 8. Bc5
                                     Bxf4 9. Bb6 Bg3 10. c7 Bxc7 11. Bxc7 Ka7
                                     12. Bb6+ Ka8 13. Bd8 f4 14. Bxf6 f3
                                     15. Bd4 Kb8 16. Kb6
         31     0.29          5.77   1. b6+ Bxb6 2. Kb5 Bc7 3. Be3 Ka8 4. Kxc5
                                     Ba5 5. Kb5 Bc7 6. c5 Bb8 7. c6 Bd6 8. Bc5
                                     Bxf4 9. Bb6 Bg3 10. c7 Bxc7 11. Bxc7 Ka7
                                     12. Bb6+ Ka8 13. Bd8 f4 14. Bxf6 f3
                                     15. Bd4 Kb8 16. Kb6 Ka8
         31->   0.29          5.77   1. b6+ Bxb6 2. Kb5 Bc7 3. Be3 Ka8 4. Kxc5
                                     Ba5 5. Kb5 Bc7 6. c5 Bb8 7. c6 Bd6 8. Bc5
                                     Bxf4 9. Bb6 Bg3 10. c7 Bxc7 11. Bxc7 Ka7
                                     12. Bb6+ Ka8 13. Bd8 f4 14. Bxf6 f3
                                     15. Bd4 Kb8 16. Kb6 Ka8
         32     0.34          5.61   1. b6+ Bxb6 2. Kb5 Bc7 3. Be3 Ka8 4. Kxc5
                                     Ba5 5. Kb5 Bc7 6. c5 Ka7 7. c6+ Kb8 8. Bd2
                                     Bd6 9. Bc1 Ka8 10. Be3 Bc7 11. Bb6 Bxf4
                                     12. c7 Bxc7 13. Bxc7 Ka7 14. Bb6+ Ka8
                                     15. Bd8 f4 16. Bxf6 f3 17. Bd4 Kb8
         32->   0.35          5.61   1. b6+ Bxb6 2. Kb5 Bc7 3. Be3 Ka8 4. Kxc5
                                     Ba5 5. Kb5 Bc7 6. c5 Ka7 7. c6+ Kb8 8. Bd2
                                     Bd6 9. Bc1 Ka8 10. Be3 Bc7 11. Bb6 Bxf4
                                     12. c7 Bxc7 13. Bxc7 Ka7 14. Bb6+ Ka8
                                     15. Bd8 f4 16. Bxf6 f3 17. Bd4 Kb8
         33     0.40          6.00   1. b6+ Bxb6 2. Kb5 Bc7 3. Be3 Ka8 4. Kxc5
                                     Ba5 5. Kb5 Bc7 6. c5 Ka7 7. c6+ Kb8 8. Bd2
                                     Bd6 9. Bc1 Ka8 10. Be3 Bc7 11. Bb6 Bxf4
                                     12. c7 Bxc7 13. Bxc7 Ka7 14. Bb6+ Kb8
                                     15. Bc5 f4 16. Bd6+ Ka8 17. Bxf4 Ka7
                                     18. Bd6 Ka8
         33->   0.40          6.00   1. b6+ Bxb6 2. Kb5 Bc7 3. Be3 Ka8 4. Kxc5
                                     Ba5 5. Kb5 Bc7 6. c5 Ka7 7. c6+ Kb8 8. Bd2
                                     Bd6 9. Bc1 Ka8 10. Be3 Bc7 11. Bb6 Bxf4
                                     12. c7 Bxc7 13. Bxc7 Ka7 14. Bb6+ Kb8
                                     15. Bc5 f4 16. Bd6+ Ka8 17. Bxf4 Ka7
                                     18. Bd6 Ka8
         34     0.67         11.07   1. b6+ Bxb6 2. Kb5 Bc7 3. Be3 Ka8 4. Kxc5
                                     Ba5 5. Kb5 Bc7 6. c5 Ka7 7. c6+ Kb8 8. Kc4
                                     Ka8 9. Kd5 Bb8 10. Ke6 Bc7 11. Kxf6 Bd8+
                                     12. Kxf5 Kb8 13. Bc5 Ba5 14. Bd4 Ka8
                                     15. Be5 Bc7 16. Bxc7 Ka7 17. Ba5 Kxa6
                                     18. Bd8 Ka7 19. c7
         34->   0.72         11.07   1. b6+ Bxb6 2. Kb5 Bc7 3. Be3 Ka8 4. Kxc5
                                     Ba5 5. Kb5 Bc7 6. c5 Ka7 7. c6+ Kb8 8. Kc4
                                     Ka8 9. Kd5 Bb8 10. Ke6 Bc7 11. Kxf6 Bd8+
                                     12. Kxf5 Kb8 13. Bc5 Ba5 14. Bd4 Ka8
                                     15. Be5 Bc7 16. Bxc7 Ka7 17. Ba5 Kxa6
                                     18. Bd8 Ka7 19. c7
         35     0.77         11.07   1. b6+ Bxb6 2. Kb5 Bc7 3. Be3 Ka8 4. Kxc5
                                     Ba5 5. Kb5 Bc7 6. c5 Ka7 7. c6+ Kb8 8. Kc4
                                     Ka8 9. Kd5 Bb8 10. Ke6 Bc7 11. Kxf6 Bd8+
                                     12. Kxf5 Kb8 13. Bc5 Ba5 14. Bd4 Ka8
                                     15. Be5 Bc7 16. Bxc7 Ka7 17. Ba5 Kxa6
                                     18. Bd8 Ka7 19. c7
         35->   0.78         11.07   1. b6+ Bxb6 2. Kb5 Bc7 3. Be3 Ka8 4. Kxc5
                                     Ba5 5. Kb5 Bc7 6. c5 Ka7 7. c6+ Kb8 8. Kc4
                                     Ka8 9. Kd5 Bb8 10. Ke6 Bc7 11. Kxf6 Bd8+
                                     12. Kxf5 Kb8 13. Bc5 Ba5 14. Bd4 Ka8
                                     15. Be5 Bc7 16. Bxc7 Ka7 17. Ba5 Kxa6
                                     18. Bd8 Ka7 19. c7
         36     0.92         11.07   1. b6+ Bxb6 2. Kb5 Bc7 3. Be3 Ka8 4. Kxc5
                                     Ba5 5. Kb5 Bc7 6. c5 Ka7 7. c6+ Kb8 8. Kc4
                                     Ka8 9. Kd5 Bd8 10. Ke6 Kb8 11. Kd7 Ba5
                                     12. Ke7 Bc7 13. Kxf6 Bd8+ 14. Kxf5 Ba5
                                     15. Bd4 Ka8 16. Be5 Bc7 17. Bxc7 Ka7
                                     18. Ba5 Kxa6 19. Bd8 Ka7 20. c7
         36->   0.94         11.07   1. b6+ Bxb6 2. Kb5 Bc7 3. Be3 Ka8 4. Kxc5
                                     Ba5 5. Kb5 Bc7 6. c5 Ka7 7. c6+ Kb8 8. Kc4
                                     Ka8 9. Kd5 Bd8 10. Ke6 Kb8 11. Kd7 Ba5
                                     12. Ke7 Bc7 13. Kxf6 Bd8+ 14. Kxf5 Ba5
                                     15. Bd4 Ka8 16. Be5 Bc7 17. Bxc7 Ka7
                                     18. Ba5 Kxa6 19. Bd8 Ka7 20. c7
         37     1.13         11.07   1. b6+ Bxb6 2. Kb5 Bc7 3. Be3 Ka8 4. Kxc5
                                     Ba5 5. Kb5 Bc7 6. c5 Ka7 7. c6+ Kb8 8. Kc4
                                     Ka8 9. Kd5 Bd8 10. Ke6 Kb8 11. Kd7 Ba5
                                     12. Ke7 Bc7 13. Kxf6 Bd8+ 14. Kxf5 Ba5
                                     15. Bd4 Ka8 16. Be5 Bc7 17. Bxc7 Ka7
                                     18. Ba5 Kxa6 19. Bd8 Ka7 20. c7
         37->   1.18         11.07   1. b6+ Bxb6 2. Kb5 Bc7 3. Be3 Ka8 4. Kxc5
                                     Ba5 5. Kb5 Bc7 6. c5 Ka7 7. c6+ Kb8 8. Kc4
                                     Ka8 9. Kd5 Bd8 10. Ke6 Kb8 11. Kd7 Ba5
                                     12. Ke7 Bc7 13. Kxf6 Bd8+ 14. Kxf5 Ba5
                                     15. Bd4 Ka8 16. Be5 Bc7 17. Bxc7 Ka7
                                     18. Ba5 Kxa6 19. Bd8 Ka7 20. c7
         38     2.01         14.57   1. b6+ Bxb6 2. Kb5 Bc7 3. Be3 Ka8 4. Kxc5
                                     Ba5 5. Kb5 Bc7 6. c5 Ka7 7. c6+ Kb8 8. Kc4
                                     Ka8 9. Kd5 Bd8 10. Ke6 Bc7 11. Kxf6 Bd8+
                                     12. Kxf5 Kb8 13. Bc5 Bc7 14. Bd4 Bd8
                                     15. Be5+ Ka8 16. c7 Bxc7 17. Bxc7 Ka7
                                     18. Kg6 Ka8 19. Kxh5 Ka7 20. f5 Ka8
                                     21. Bd8
         38->   2.07         14.57   1. b6+ Bxb6 2. Kb5 Bc7 3. Be3 Ka8 4. Kxc5
                                     Ba5 5. Kb5 Bc7 6. c5 Ka7 7. c6+ Kb8 8. Kc4
                                     Ka8 9. Kd5 Bd8 10. Ke6 Bc7 11. Kxf6 Bd8+
                                     12. Kxf5 Kb8 13. Bc5 Bc7 14. Bd4 Bd8
                                     15. Be5+ Ka8 16. c7 Bxc7 17. Bxc7 Ka7
                                     18. Kg6 Ka8 19. Kxh5 Ka7 20. f5 Ka8
                                     21. Bd8
         39     6.91          Won    1. b6+ Bxb6 2. Kb5 Bc7 3. Be3 Ka8 4. Kxc5
                                     Ba5 5. Kb5 Bc7 6. c5 Ka7 7. c6+ Kb8 8. Bb6
                                     Bxf4 9. a7+ Ka8 10. c7 Bxc7 11. Bxc7 Kxa7
                                     12. Kc6 Ka6 13. Kd7 Kb7 14. Bf4 Ka6
                                     15. Bc1 f4 16. Bxf4 Ka5 17. Ke6 Ka6
                                     18. Kxf6 <EGTB>
         39->   7.54          Won    1. b6+ Bxb6 2. Kb5 Bc7 3. Be3 Ka8 4. Kxc5
                                     Ba5 5. Kb5 Bc7 6. c5 Ka7 7. c6+ Kb8 8. Bb6
                                     Bxf4 9. a7+ Ka8 10. c7 Bxc7 11. Bxc7 Kxa7
                                     12. Kc6 Ka6 13. Kd7 Kb7 14. Bf4 Ka6
                                     15. Bc1 f4 16. Bxf4 Ka5 17. Ke6 Ka6
                                     18. Kxf6 <EGTB>
         40     8.23          Won    1. b6+ Bxb6 2. Kb5 Bc7 3. Be3 Ka8 4. Kxc5
                                     Ba5 5. Kb5 Bc7 6. c5 Ka7 7. c6+ Kb8 8. Bb6
                                     Bxf4 9. a7+ Ka8 10. c7 Bxc7 11. Bxc7 Kxa7
                                     12. Kc6 Ka6 13. Kd7 Kb7 14. Bf4 Ka6
                                     15. Bc1 f4 16. Bxf4 Ka5 17. Ke6 Ka6
                                     18. Kxf6 <EGTB>
         40->   8.37          Won    1. b6+ Bxb6 2. Kb5 Bc7 3. Be3 Ka8 4. Kxc5
                                     Ba5 5. Kb5 Bc7 6. c5 Ka7 7. c6+ Kb8 8. Bb6
                                     Bxf4 9. a7+ Ka8 10. c7 Bxc7 11. Bxc7 Kxa7
                                     12. Kc6 Ka6 13. Kd7 Kb7 14. Bf4 Ka6
                                     15. Bc1 f4 16. Bxf4 Ka5 17. Ke6 Ka6
                                     18. Kxf6 <EGTB>
         41     9.30          Won    1. b6+ Bxb6 2. Kb5 Bc7 3. Be3 Ka8 4. Kxc5
                                     Ba5 5. Kb5 Bc7 6. c5 Ka7 7. c6+ Kb8 8. Bb6
                                     Bxf4 9. a7+ Ka8 10. c7 Bxc7 11. Bxc7 Kxa7
                                     12. Kc6 Ka6 13. Kd7 Kb7 14. Bf4 Ka6
                                     15. Bc1 f4 16. Bxf4 Ka5 17. Ke6 Ka6
                                     18. Kxf6 <EGTB>
IE winning material at 0.19 seconds, depth=24, Much bigger win of material at .67 seconds, depth=34, and syzygy win at 6 seconds, depth=39.

This is not about any particular knowledge, just depth. To discover that if you don't make that b6 (or Be3 move) NOW, black can defend and prevent the entry of white. All it takes is depth.
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jwes
Posts: 778
Joined: Sat Jul 01, 2006 7:11 am

Re: WAC 100

Post by jwes »

Dann Corbit wrote:Texel using MPV:3 found that Be3 is no worse than Mate in 42.

Code: Select all

     25	06&#58;30	4,445,666,578	11,393,389	+M42	Be3 Bb6 Bd2 Bc7 b6+ Bxb6 Kb5 Bd8 Be3 Ka8 Kxc5 Ba5 Kc6 Bc3 c5 Bb2 Kb5 Ba3 c6 Bd6 Kc4 Kb8 Kd5 Bc7 Ke6 Ka8 Kd7 Ba5 a7 Bb6 Bc1 Kxa7 c7 Bxc7 Kxc7 Ka8 Bd2 Ka7 Be3+ Ka6 Kc6 Ka5 Kd7 Kb4 Bd2+ Kc4 Ke6 Kd3 Kxf5 Kxd2 Kxf6 Kd3 Kg6 Ke4 Kxh5 Kf5 Kh6 Ke4 Kg5 Kd5 Kg6 Kc4 f5 Kb3 h5 Ka2 f6 Ka1 h6 Kb1 f7 Ka1 f8Q Kb2 Qf3 Ka1 Qe2 Kb1 h7 Ka1 h8Q+ Kb1 Qeb2+
The PV shows that it repeats the start position and then plays b6+. I'm not sure that counts as an alternate solution.
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MikeB
Posts: 4889
Joined: Thu Mar 09, 2006 6:34 am
Location: Pen Argyl, Pennsylvania

Re: WAC 100

Post by MikeB »

bob wrote:I do not see why these solutions are taking so long. WAC100 has been considered "easy" for 10 years now. I just ran this on my MacBook (pretty old 1.7ghz machine). I see this kind of time:

[deleted]

IE winning material at 0.19 seconds, depth=24, Much bigger win of material at .67 seconds, depth=34, and syzygy win at 6 seconds, depth=39.

This is not about any particular knowledge, just depth. To discover that if you don't make that b6 (or Be3 move) NOW, black can defend and prevent the entry of white. All it takes is depth.
Don't go by what I post - I was letting it run to find the "shortest" mate without egtb, with syzygy 6 man, it locks in on a mate score with at 1.375 secs at depth 25:

Code: Select all

info depth 25 seldepth 40 multipv 1 score cp 12729 nodes 12420435 nps 9033043 hashfull 18 tbhits 48061 time 1375 pv b5b6 c7b6 a4b5 b6d8 d2e3 a7b8 e3c5 b8c8 c5e3 d8c7 c4c5 c7b8 c5c6 c8c7 e3b6 c7c8 c6c7 b8a7 b6a7 c8c7 a7e3 c7c8 a6a7 c8b7 e3f2 b7a8 f2b6 a8b7 b5c4 b7a8 c4d5 a8b7 d5e6
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Dann Corbit
Posts: 12540
Joined: Wed Mar 08, 2006 8:57 pm
Location: Redmond, WA USA

Re: WAC 100

Post by Dann Corbit »

With Pennery's wall detection (Crafty 20) enabled for the compile, Crafty would solve wac.230 in zero seconds.

With no artificial inflation for passed pawns.
It would instantly see that not making the rook move moved the score to 0.0 (after a trivial number of plies).
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