Author: Tord Romstad
Date: 07:49:11 02/06/04
The ongoing discussion about mobility evaluation has given me a new idea which could perhaps be of interest to some: One of the many difficult problems in mobility evaluation is to decide, for each square a piece can move to without getting captured, how big a bonus one should give for being able to move there. One of the main criterions I use is whether the piece would contribute to the attack of the enemy king or the defense of the friendly king from the square. This helps my engine to notice attacking potential some time before the attack materializes on the board. I also give an extra mobility bonus for pieces which have the potential to do more than one task, for instance if the piece can move to squares where it attacks the enemy king *and* to squares where it defends the friendly king. My new idea is this: Why not compute two different mobility scores for each side? It seems more flexible to compute a separate "offensive mobility" and "defensive mobility" for every piece. One could then use other components of the eval to decide upon the weightings for offensive vs. defensive mobility for each side. Has anybody tried something like this before? How well does it work? Tord
This page took 0.01 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.