Author: Robert Hyatt
Date: 12:08:04 07/18/02
Go up one level in this thread
On July 18, 2002 at 14:56:29, J. Wesley Cleveland wrote: >On July 18, 2002 at 00:39:08, Robert Hyatt wrote: > >>On July 17, 2002 at 17:42:23, Patrik wrote: >> >>>The reason to allow null move only when more than 5 pieces left >>>comes from zugzwang. Right? >>>Then, what is the reason to allow null move when less than 7 plies left? >> >>So that as you get into potential zugzwang positions, the first N plies >>will be null-move free... The deeper you search, the more accurate the >>first N moves will be. This solves many of the null-move killer positions >>easily. > >Here is one it does not work on. If you enter gxh8=Q, crafty sees it is winning >instantly, but appears never to consider this move. > >4K1kr/6Pp/5q1P/4P3/8/3P4/8/8 w - - 0 4 Too much material. The >7 ply test is never done.
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