Computer Chess Club Archives


Search

Terms

Messages

Subject: Re: Evaluating Mobility

Author: Jon Dart

Date: 15:54:49 10/21/99

Go up one level in this thread


The number of legal moves for a piece is not a good measure of
mobility - e.g. a bishop cannot usually move to a location
attacked by an enemy pawn.

Mobility is pretty cheap to compute if you use bitboards. You
can even easily exclude squares attacked by pawns.

Pins also reduce mobility and can sometimes be a long-term
weakness that the search doesn't evaluate well. Some programs
have explicit eval scoring for pins, but this doesn't seem
to be very common.

--Jon



This page took 0 seconds to execute

Last modified: Thu, 15 Apr 21 08:11:13 -0700

Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.