Author: Bruce Moreland
Date: 20:40:21 10/07/99
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On October 07, 1999 at 20:45:08, James Robertson wrote: >My search currently decides a position is drawn if it has repeated twice. I >think this is causing my search to sometimes stuff 2nd rep draw values into the >hash table that can be retrieved for positions with different history's. Is this >a problem? What do other people do? Could I just not store any draw values in >the hash table? Should I go to draw by 3rd rep? Don't store it, since it can only cause problems if you do. But your problems won't end if you don't store these scores, since a large portion of the tree can potentially be affected by the presence of repetitions. The bottom line is that you can't completely solve this problem. What will happen is that when you re-search a position that failed high, it might fail low, which you'd think should be impossible. You can't fix this, all you can do is come up with a way not to explode when it happens. bruce
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