Author: Uri Blass
Date: 22:58:59 03/09/01
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On March 10, 2001 at 01:38:25, Pete Galati 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 don't know if that's a problem. I have some of the 5 piece tablebases, >whatever came with the Junior CD. > >It doesn't appear to be a draw to me, White looks like it's in a lot of trouble >and it's only hope is for Black to blunder. I somehow can't imagine White ever >promoting any of those pawn considering that the King can't get up there to help >them promote. To ME at least, all hope looks lost for White, but I could be >wrong. The scores of Crafty suggest that it is a draw. White cannot promote but black also cannot make progress. 3.26 pawns for black at depth 9-13 and 3.24 pawns for black at depth 14-17 suggest that black cannot make progress. The most important tablebases for this endgame is the KRKPP tablebases but seeing the draw is not an easy problem for computers because black can play a lot of moves when both sides do no progress and I doubt if they can see it even with the KRKPP tablebases. Uri
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