Author: Uri Blass
Date: 08:02:31 10/30/03
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On October 30, 2003 at 08:49:19, Uri Blass wrote: >On October 30, 2003 at 08:41:50, Tord Romstad wrote: > >>In order to find out how good my move ordering is, I determined to check >>which percentage of the cutoffs occured on the first move searched. After >>10 blitz games, the average was 91.4%. Looks a bit low, doesn't it? What >>do other engines get? >> >>Tord > >I never checked mine but I think that it is not a good comparison. > >Things that are not connected with order of moves like null move pruning or >extensions may change the %. > >Uri I can add that my opinion is that the only good comparison is time to solution between the engine and itself. I remember from previous discussion that null move pruning reduce the quality of order of moves by the definition that was given and it is misleading. It is logical that null move pruning is going to reduce the % of first fail high because it means that the program does not have things like: 1.e4 e5 2.Nf3 Qh4 3.Nxh4 a6 fail high for white in first move. 1.e4 e5 2.Nf3 Qh4 3.Nxh4 a5 fail high for white in the first move. ... Uri
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