Author: Tord Romstad
Date: 23:12:24 01/08/06
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On January 08, 2006 at 18:29:13, Ryan B. wrote: > /* Adjust knight and rook material values by number of pawns, using > * Larry Kaufmann's formulas: */ > misc[side] += rooks[side]*(5-pawns[side])*32; > e_misc[side] += rooks[side]*(5-pawns[side])*32; > misc[side] += knights[side]*(pawns[side]-6)*16; > e_misc[side] += knights[side]*(pawns[side]-6)*16; > > >Kaufmann's stats are right if you have no mobility detection. Fewer pawns are >better for Rooks and Bishops because of mobility, something that is not a >problem with knights. You have already calculated mobility so you are giving >the bonus/penalty twice for the same thing in a different way. I think a >smaller bonus/penalty for pawn count could give greater benefit in your case. Hi Ryan, Thanks a lot for this very useful hint! I am not entirely sure you are right (my mobility code is extremely primitive, like so much else in my eval), but it is certainly worth a try. I will experiment with smaller bonuses and penalties for the material balance stuff when I have some time. Tord
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