Author: Stuart Cracraft
Date: 19:35:37 09/25/04
Go up one level in this thread
On September 25, 2004 at 17:19:04, Andrew Platt wrote: >On September 25, 2004 at 16:35:05, Stuart Cracraft wrote: > >>So do you solve WAC 141 in a reasonable amount of time? > >As I said, I don't see the mate score in a reasonable time but I do find Qxf4!: > > 6 -178 6 45906 Kf1 b4 Bc4 Nd5 Bg5 f5 > 6 -178 6 47494 Kf1 b4 Bc4 Nd5 Bg5 f5 > 7 -172 26 191354 Kf1 a5 Bg5 Nd3 Qc2 Re1+ Kg2 Re8 > 7 -172 28 201701 Kf1 a5 Bg5 Nd3 Qc2 Re1+ Kg2 Re8 > 8 -163 89 666343 Kf1 a5 Bg5 Ne6 Bxe6 Rxe6 Kg1 f5 > 8 -163 92 692725 Kf1 a5 Bg5 Ne6 Bxe6 Rxe6 Kg1 f5 > 9 -124 823 6360825 Kf1 Rc8 Qb1 Nd5 Kg1 b4 Bg5 Be7 f4 > 9 +137 1218 9592419 Qxf4 ++ > 9 +764 1459 11570166 Qxf4 Bxf4 Rxh5 gxh5 Rxh5 Bh6 Rxh6 Qg3+ fxg3 Re2+ >Kh3 Rh2+ Kxh2 a5 > 9 +764 1462 11596859 Qxf4 Bxf4 Rxh5 gxh5 Rxh5 Bh6 Rxh6 Qg3+ fxg3 Re2+ >Kh3 Rh2+ Kxh2 a5 >10 +764 1834 14726581 Qxf4 Bxf4 Rxh5 gxh5 >10 +764 1870 15025646 Qxf4 Bxf4 Rxh5 gxh5 > >As you can see it misses the mate near the bottom. It extends at Rxh5 (mate >threat), Rxh5 again, Rxh6 (mate threat still), Qg3+ (check). I forget exactly >why it misses the mate at the bottom. I know it drops into qsearch with Rh8# >being move it doesn't consider because it's a capture; I think the line it comes >up with happens because it has the most extensions and captures! > >I don't consider this conclusive; I expect I could change the search for >something else and find this one disappears again! > >Andy. My program won't solve it without recapture extention enabled. And then only in about 2-3 minutes on a 1ghz P3. With the best settings for WAC overall, which doesn't include that extension, WAC 141 completely befuddles the program. Wish I could get this one solved. David -- how does GES do on WAC 141? Am willing to publish my search()+quiesce() code verbatim to get input from anyone who really has a handle on 141 and wants to help. Alpha=-1332 Beta=-531 Maxdepth=9999999 MaxTime=9999999 1/ 9 g2f1 0.00 -953 352 g2f1 f4d5 g2f1 f4d5 2/ 9 g2f1 0.01 -953 730 g2f1 f4d5 c1g5 3/11 g2f1 0.02 -953 2018 g2f1 f4d5 c1g5 d5f6 4/14 g2f1 0.07 -953 10025 g2f1 f4d5 b3d5 c6d5 f1g2 5/17 g2f1 0.43 -953 77695 g2f1 b5b4 b3a4 f4d5 f6g5 d5e7 6/23 g2f1 1.57 -953 225860 g2f1 b5b4 b3a4 f4d5 f6g5 d5e7 7/28 g2f1 8.76 -939 1778751 g2f1 a7a5 f6g5 f4e6 c1e3 d6e7 g5e7 d7e7 g2f1 a7a5 f6g5 f4e6 c1e3 d6e7 g5e7 d7e7 8/29 g2f1 17.28 -939 3143034 g2f1 a7a5 f6g5 f4e6 h4e4 a5a4 b3e6 e8e6 f1g1 9/34 g2f1 27.41 -939 4951637 g2f1 a7a5 f6g5 f4e6 h4e4 a5a4 b3e6 e8e6 f1g1 10/41 g2f1 71.45 -939 12724480 g2f1 a7a5 f6g5 f4e6 h4e4 a5a4 b3e6 e8e6 f1g1 e6e4
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