Author: Uri Blass
Date: 15:06:51 07/17/02
Go up one level in this thread
On July 17, 2002 at 15:41:45, Oliver Roese wrote: >On July 16, 2002 at 15:03:48, Gian-Carlo Pascutto wrote: > >>From a game Sjeng-Hiarcs >> >>[D]8/8/6b1/1k6/p2K4/P7/1P6/8 b - - 0 71 >> >>My engine statically says this is a draw (bishop + wrong pawn). >> >>In reality, black mates in 23 or less. >> >>Makes my search go bonkers (and for some other programs as well) >> >>Sjeng 12.14 Maastricht - Hiarcs 7.32 >>8/8/6b1/1k6/p2K4/P7/1P6/8 b - - 0 1 >> >... >>71...Bf7 72.Kc3 Kc5 73.Kd3 Kd5 74.Kc3 Ke4 75.b3 axb3 >> -+ (-#23) Depth: 20/38 00:00:06 4793kN, tb=113744 >> > >This topic is a strong candidate for the CCC-FAQ (which is unknown >to exist currently however). Just kidding :) > >The point in positions of this kind is: >Can the defender reach the corner? >If so the game is a draw immedeatly. >If not he is doomed to loose. > >Oliver Wrong. If the white king is at a1 the black bishop is at b1 and the black king at c1 then white is forced to move is the pawn and lose the game. It is not so simple. The defender needs to be able to reach the corner but it is only one condition for the draw. Uri
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