Author: Alvaro Jose Povoa Cardoso
Date: 06:23:13 08/18/01
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I think the problem might be related with extensions. I use fractional extensions that may be diferent for each move at this node. At the top of the search I don't have all the information I need to compute the extension for the hash move. For example, I use the number of moves at this node in a formula to compute the extensions for every move I search, since I don't have that at the top of the search I cannot calculate the extension value for the hash move. I think I have to rethink the extensions in my program. By the way, can some one explain how does it work in crafty. If I'm not mistaken it only uses a single bit in the hash table to tell if we should extend or not. The question is how much I should extend? A full ply? I so that is not consistent because Crafty uses fractional extensions, right? Thank you all, Alvaro Cardoso
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