Author: Gian-Carlo Pascutto
Date: 10:38:59 03/20/02
Go up one level in this thread
On March 20, 2002 at 13:17:36, Scott Gasch wrote: >Wow. My static eval for white here is -0.5 pawns. With a search the engine >thinks it can force a draw and is happy to do so. As for _how_ I evaluate it, >the major component of the eval is the white passer. However it's blockaded by >an enemy piece sitting on a square controlled by the enemy so it has no >prospect of advancing. That chops down the bonus to that passer severly. Ok, I do something similar here. >I do give some credit to white for aiming its rook/queen at the enemy king but >monsoon does not understand the mate threat it poses. Hmm. A large component in my eval here is that white's king is unreachable for black, while black's has lost all it's protection. Add the threat on f7 and the mate threat on g7, and my thing thinks this is about as bad as it gets. I have a system that reduces the score as pieces go off, but it considers a rook and a queen still plenty dangerous. I fiddled a bit with so the reduction is a bit bigger, and it also enforces a maximum kingsafety penalty that may be applied, and now it's down to more reasonable levels (+1.5-+2.0) It seems to work, at least here, but it still feels somewhat like a hack, especially because most are getting such very _low_ scores here. Is there something intrisic in this position that makes white's threat just worthless that they understand? >I think my eval here is >just as skewed as sjeng's, just in the opposite direction. Do you actually >evaluate the mate threat? It understands that this configuration of pieces leads to a mate threat for white. (It'll also understand it has to be more carefull with pruning) -- GCP
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.