Author: Bob Durrett
Date: 07:11:38 01/08/04
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On January 08, 2004 at 08:49:27, Russell Reagan wrote: >On January 08, 2004 at 08:28:25, Daniel Shawul wrote: > >>Hi >> >>I don't do piece mobility eval in my chess >>engine.Have heard Ruffian 2 uses intensive piece mobility eval and >>I would like to do it in my engine.At the moment,mobility is done only for >>bishops in my engine. >>I count the possible moves(costy for me,i use bitboards) and assign some value >>accordingly. >>I don't do it for other pieces because haven't seen/understood its importance >>yet.A web page on mobility eval is appreciated. >> >>regards >>daniel > >If you use rotated bitboards you can compute mobility for the same cost as >producing the bishop attack bitboards. Instead of your lookup table returning an >attack bitboard, have it return the number of attacks. I remember seeing >something like this in Crafty, so take a look there. Saw it in Crafty???? There are no new ideas in chess engine design!!! : ) Hyatt must have had a revelation from Heaven when he wrote his chess engine. Humans just don't have what it takes to come up with new ideas, it seems. : ) Bob D.
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