Author: Uri Blass
Date: 22:36:34 11/14/02
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On November 15, 2002 at 01:11:26, Ron Murawski wrote: >On November 15, 2002 at 00:23:42, Nagendra Singh Tomar wrote: > >>Hi All, >> I think this question has been asked in different forms in this forum but >>I was less than satisfied, so I am putting the question once more. >> >>How much can be the maximum allowable difference in positional score of the two >>sides ? >> > >There is no limit, but if you want an engine to play well you'de better stay >within believable limits. For instance if you make the penalty for a doubled >pawn higher than the value of a pawn, such an engine would rather lose a pawn >than have one that was doubled. > >>i.e assuming BLACK during its search hits a position in the leaf and calls >>evaluate, evaluate() finds that black's pieces are wonderfully placed and whites >>pieces are pathetically placed but still black is say a bishop down. Is it >>sensible to return a +ve eval score in this. >>I mean can the maximum allowable difference in positional score be as high as a >>bishop or knight's score. >> > >Yes, absolutely. It *can*. But maybe you might not want it to be that high. The >only time you can give bonuses that high and get away with it is if a king >attack seems immanent and you predict this correctly. No It is possible also to give it if there is an unstoppable passed pawn. Uri
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