Author: Uri Blass
Date: 00:34:19 03/10/01
Go up one level in this thread
On March 10, 2001 at 02:55:29, Dann Corbit wrote: >On March 10, 2001 at 00:26:57, Michael Fuhrmann wrote: > >>[D] 8/8/7P/5kP1/5P2/r7/5K2/8 b - - 0 114 >> >> >>Crafty scores this as -3.26 for white on my computer, yet it seems to be a draw. >>I don't have all the 5-piece tbs. Is that the problem? > >I have the complete 5 piece tablebase file set. It does not seem to help much. >However, it is clear that it is a draw. The output of the chase below is rather >amusing. We might call it "I'll get that f4 pawn if it's the last thing I do!" > >Past the last actual search depth in plies, for each new search, it always ends >in Kxf4. But each time we go one more ply (when we have actually examined the >consequences of that horizon capture) it gets pushed out. It is clear that this >is a draw. It seems that the problem is that Crafty does not look at the tablebases in the last ply. Maybe probing the tablebases everywhere can help Crafty to get more realistic evaluation because it is not going to have wrong evaluation for KR vs KPP endgames and evaluation for KR vs KPPP endgames is going to be closer to draw. Uri
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