Author: Robert Hyatt
Date: 12:48:04 07/23/02
Go up one level in this thread
On July 23, 2002 at 12:46:44, Sune Fischer wrote: >On July 23, 2002 at 11:48:02, Uri Blass wrote: >problem. >> >>The evaluation of the top programs of today is better relative to the evaluation >>of some years ago. >> >>Uri > >I think Deep Blue had a lot of knowledge compared to the micros of 1997. > >It evaluated: >*) concepts such as square control >*) pins >*) x-rays >*) king safety >*) pawn structure >*) passed pawn >*) ray control >*) outposts >*) pawn majority >*) rook on 7th >*) blockade >*) restraint >*) color complex >*) trapped pieces >*) development >*) and so on... > >Example of kingsafety: >"Before the king castles, the system computes three king safety evaluations, one >for king-side castling, one for queen-side castling and the base value for >staying in the center. Each of these king safety evaluations takes into account >the types of pieces attacking, the soundness of the king's shelter, presence of >attacking pawns, color complex around the king, and os on. The final king safety >evaluation is a weighted linear combination of the three king safety >evaluations." > >-S. That was an idea first used in Cray Blitz. And it has been in Crafty since the beginning as well. In 1983 I called that the "look left, look right" castling evaluation, because most programs would castle when they could, even if the other side was safer... We didn't make that mistake very often.
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.