Author: Will Singleton
Date: 20:36:09 12/05/00
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On December 05, 2000 at 19:25:55, Scott Gasch wrote: > >Finally, I changed the code to follow Ernst's advice... Before I was storing >depth+extend as the depth in the hash node... now I am only storing depth. I do >not fully understand this, though... if I just got a score X from a search with >depth=depth+extend, is it incorrect to store depth+extend in the hash table? I >would really appreciate some clarification of this concept if someone has time. > I didn't see anything about that in Ernst's message. I think he said that people typically store the depth remaining (called the draft), rather than the depth from the root. The depth remaining would include any extensions. One can argue about semantics, but it's clear (I think) that when a score is returned to any node, the importance of that score (as far as hash is concerned) is dependent upon how many plies were searched under that node. So, for example, if you store a hash position at ply 4 during an 8 ply search (draft=4), that would be replaced by a search which stores a position at ply 4 during a 10 ply search (draft=6). Will
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