Author: William Bryant
Date: 12:12:24 07/27/99
Under what circumstances would Crafty store a position in the hash table as AVOID_NULL_MOVE rather than LOWER, UPPER, or EXACT. I understand the concept of storing the Null Check Threat in the hash table. Because a number of factors may influence wither or not a null move is made, and these may vary at the same position depending upon the path the search has taken to that position, storing the threat makes sure that the search is exteneded weither or not an actual null move is done. But I am at loss when the program would use AVOID_NULL_MOVE rather than other search flags. BTW, have carefully reread iterate.c, searchr.c and search.c, I do not find this flag used in storing any position. Thanks in advance, William wbryant@ix.netcom.com
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