Computer Chess Club Archives


Search

Terms

Messages

Subject: Re: which programs let you do a breakdown of the static evaluation?

Author: Reinhard Scharnagl

Date: 14:59:22 01/24/05

Go up one level in this thread


On January 24, 2005 at 17:36:21, Eric Oldre wrote:

>I'm interested in knowing which free engines will give you a static
>evaluation. (I think that is the term) ...

>ie
>material 	100
>kingsafe	34
>mobility	-30
>pawns		-68
>
>etc

Not all engines have an evaluation function structured like that.

Smirf is not a free engine, but as an example its evaluation is
composed from a nonlinear material balance factor, a separated
pawn structure and passed pawn evaluation and finally a positional
detail evaluation NOT based on piece/coordiante tables BUT on all
interdependancies between the pieces.  By that e.g. mobility be-
comes irrelevant within its evaluation, because it could be repre-
sented much better by the pieces' influences.  And there is ONE
unic evaluation function for all phases of the game, because a
good one should depend only on the position of the board pieces.

Moreover piece/coordiante depending tables mostly have been opti-
mized to games and positions from classic chess, thus reflecting
an absence of any understanding of (uncommon) openings like at the
Chess960 superset.

Reinhard.



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.