Author: Uri Blass
Date: 08:49:22 02/09/03
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On February 06, 2003 at 17:18:49, Matthias Gemuh wrote: > >On Athlon 1.4 GHz, BigLion, http://www.gemuh.de > >(5 sec/pos -> 34 unsolved) >8/7p/5k2/5p2/p1p2P2/Pr1pPK2/1P1R3P/8 b - - bm Rxb2; id "WAC.002"; >r4q1k/p2bR1rp/2p2Q1N/5p2/5p2/2P5/PP3PPP/R5K1 w - - bm Rf7; id "WAC.008"; I looked only in this position(I know that number 2 is not simple and Movei also cannot solve it in 5 seconds) This is only 2 plies for Movei or Crafty. I wonder what is the reason that BigLion cannot solve it in 5 seconds. Even with big evaluation I believe that biglion should get at least 4 plies so even if it use less extensions than Movei it still should be able to solve it. Rf7 threat the queen so it cannot be pruned by null move pruning. lines like Rf7 Qb8 Qxg7# is only 2 plies because captures are in the qsearch. I suggest that you look at other positions that lion fails and try to understand the reason that it fails. It may be because of bugs and fixing the bugs can improve your program. Uri
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