Author: Uri Blass
Date: 11:35:48 03/31/03
Today latest movei evaluates passed pawns and protected passed pawns based on the ranks of the pawn(I will later change it to evaluate them based on other factors like square of the kings). The problem is that the order of evaluation is not correct. If I have a pawn at b5 and another passed pawn at c5 then I want to evaluate them as better than pawn at b4 and protected passed pawn at c5. I thought to give a bonus for passed pawn that has pawn in the left side of it but the problem is that in that case the evaluation is not symmetric and in the folowing diagram if the black pawn is in c6 and not f6 I get different result. [D]8/7k/5p2/8/3PP3/8/8/K7 w - - 0 1 Another problem is what to do when there are 3 passed pawns. [D]8/7k/8/8/3PPP2/8/8/K7 w - - 0 1 In that case even if I decide to give only one bonus for pair I may get here 2 bonuses and after the central pawn progress one square forward I will have only one bonus. I wonder how other programs solve that problem. protected passed pawns are good but other things are also good and the problem is how to order the things in the right order. Uri
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