Author: Brian Richardson
Date: 06:42:16 01/25/01
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On January 24, 2001 at 23:39:12, Robert Hyatt wrote: >push passed pawns is an extension that is triggered if a passed pawn is pushed >to the 7th rank only. >pushpp >0.00 sum of times(squared)=29373 >0.25 sum of times(squared)=29385 >0.50 sum of times(squared)=29336 >0.75 sum of times(squared)=29360 >1.00 sum of times(squared)=29375 >pushing a passed pawn had hardly any effect, but that might be a >result of the test suite rather than a useless extension. The default >value for this is also .75 > > Doesn't Crafty advance pawns in the evaluation anyway (until blocked or captured, I have not studied the code for some time), and then do its sophisticated passed pawn eval? This might account for the negligible extension effect. Just a thought. Brian
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