Author: blass uri
Date: 09:55:38 06/22/98
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On June 22, 1998 at 12:15:25, Amir Ban wrote: >On June 22, 1998 at 10:02:42, blass uri wrote: > >>The position 3k4/2p1p1p1/p1P1P1Pp/P6P/4K3/8/8/8 >>white to move. >> >>every human can understand it is a draw but my programs cannot evaluate >>the position as 0.00 >>Is there a program that understand it is a draw? >>( it is enough to use an hash table of 36*9*2=648 positions) >> >>Uri > >This is a good example to see what your hash table can't do for you. > >The problem is that all the positions here evaluate the same. None of them are >obviously drawn or obviously won, so the only way the search can find a draw >score is to find a repetition or 50 moves in the PV. White cannot be forced to >make a repetition, so the only hope is to search this to 100 ply, but this takes >too much time. > >Amir In this position to search to 100 ply should not take too much time There are programs that search to more than 100 plies in all the ending of 5 pieces when there are more possible positions. Uri
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