Author: Uri Blass
Date: 23:17:24 09/26/04
Go up one level in this thread
On September 27, 2004 at 01:58:56, Daniel Shawul wrote:
>On September 26, 2004 at 00:17:07, Sergei S. Markoff wrote:
>
>>There are a lot of positions with total 1 pawn on the board and equal piece sets
>>of both sides. If weaker side have 2 or more minors or (majors&&minors) then the
>>position is drawn in most cases. You must also use king position analysis to
>>improve this knowledge.
>>
>>The same to 1 pawn vs 2 pawns with no passers.
>>
>>This knowledge not help a lot, but after 2 weeks I make a version of ST which is
>>a little stronger than w/o this knowledge.
>>
>>I need your results to compare.
>
>same thing here.Mine also is better without the RPKRK evaluator.
Sergei did not talk about KRPKR evaluator so I do not understand what you mean
by same thing.
>After seeing my engine loose agaisnt Movie (whit i think doesn't have this fn) ,
>I disable the evalator and just scale down the normal score by 1/2.
>Ditto for queen pawn ending, and opposite color bishop ending.
>
>daniel
I have no special evaluator for KRP vs KR
I do similiar thing to dividing the score by 2 when there is a single pawn in
the board and when both side have equal material except the pawn I simply reduce
the score of the better side.
Here is the relevant code from movei
score is the score from white point of view.
if (numpawns[LIGHT]+numpawns[DARK]==1)
{
if (valpieces[LIGHT]==valpieces[DARK])
{
if (numpawns[LIGHT]==1)
score-=60;
else
score+=60;
}
Uri
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