Author: Heiner Marxen
Date: 10:25:44 01/01/02
Go up one level in this thread
On January 01, 2002 at 13:03:47, Gian-Carlo Pascutto wrote: >On December 31, 2001 at 21:06:49, Heiner Marxen wrote: > >>On December 31, 2001 at 17:07:31, Uri Blass wrote: >> >>>My program had problems with WAC 250 so I decided to ask it to calculate the >>>perft function and found that it cannot calculate perft 4 correctly >>> >>>The bug is that my program believed that double check from 2 rook directions is >>>impossible >>> >>>Here is the position of WAC 250 >>>[D]1b5k/7P/p1p2np1/2P2p2/PP3P2/4RQ1R/q2r3P/6K1 w - - 0 1 >>> >>>When I asked my program to calculate perft it failed in perft 4. >>> >>>My program did not count correctly the number of moves after >>>1.a5 Ng8 hxg8Q+ >>> > >Sjeng: perft 4 >Raw nodes for depth 4: 1353197 >Time : 0.93 > >Sjeng: perft 5 >Raw nodes for depth 5: 40590029 >Time : 11.97 > >Are these numbers correct? > >-- >GCP Chest agrees with your numbers: FEN: 1b5k/7P/p1p2np1/2P2p2/PP3P2/4RQ1R/q2r3P/6K1 w - - Counting width of legal tree, 5 plies deep... Time (user) = 9.84 sec dep #nodes quot sum nodes 0 1 [ 0.000] 1 1 31 [ 31.000] 32 2 1213 [ 39.129] 1245 3 35927 [ 29.618] 37172 4 1353197 [ 37.665] 1390369 5 40590029 [ 29.996] 41980398 (Done on a K7/600) Cheers, Heiner
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