Author: José Carlos
Date: 04:41:31 09/01/02
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On September 01, 2002 at 06:19:33, Alvaro Jose Povoa Cardoso wrote: >>>Difference is that Crafty used alpha instead of value when it re-searches. >>>Is there any reason to use alpha instead of value? >>>Using value which is greater than alpha seems to cause more cutoffs than using >>>alpha. >>> >>>Thanks in advance. >> >>I do this only because it is possible to fail low on the re-search, and now you >>have the question of whether this fail-high/fail-low means anything. I choose >>to go to the full window so that if it fails low, I know it is not good and I >>can ignore the fail high. This is a null-move / hashing artifact that simply >>happens to anyone doing PVS, null-move and hashing, all together... > > >Just curious, if we removed null-move, would that artifact still happen? >In other words, would PVS+hashing cause that? > >Regards, >Alvaro Cardoso Less often, but it'll happen. I had it in older versions of Averno (0.32 and prior) which didn't use null-move. José C.
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