Author: Robert Hyatt
Date: 09:21:33 01/22/02
Go up one level in this thread
On January 22, 2002 at 12:04:34, James T. Walker wrote: >On January 22, 2002 at 11:56:13, Robert Hyatt wrote: > >>On January 22, 2002 at 10:40:33, James T. Walker wrote: >> >>>[D]B7/5pk1/6p1/7p/7P/8/4K3/8 b - - 0 1 >>> >>>In this position Junior 7 played 60.....f5 ?? and lost this ending. This was >>>done with access to all 3/4/5 man tablebases. I'm an idiot and I can see about >>>3 ways to draw this ending without tablebases. >>>By the way, what's up with Chessbase? If you ask Junior 7 to copy the position, >>>this is what you get: "wKe2,Ba8,Ph4/bKg7,Pf7,g6,h5" Have they never heard of >>>FEN over there? Who in the hell uses this kind of nonsense to describe a >>>position??????? >> >> >>How could it possibly lose this as black? Even if it just gives >>up all the pawns, white has the wrong bishop if my eyes are not playing >>tricks on me. It would seem that playing g6 when black can't recapture >>if white takes would be the only way to lose, turning that worthless rook >>pawn into a knight pawn that can win. > >You asked for it! > >[D]B7/5pk1/6p1/7p/7P/8/4K3/8 b - - 0 60 > 60...f5 61.Ke3 f4+ 62.Kxf4 Kh6 63.Be4 Kg7 64.Kg5 Kh8 65.Kh6 Kg8 66.Bd5+ Kh8 >67.Bc4 g5 68.hxg5 h4 69.g6 h3 70.g7# 1-0 A _terrible_ bug then. :) Seems to think that white can't win no matter what black does. Which is a mistake... This can happen when you try to recognize things at "interior nodes" rather than waiting to reach the tips of the tree. No idea if that is the problem here, but it can be a problem in general.
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