Computer Chess Club Archives


Search

Terms

Messages

Subject: Re: How long to see black is winning + crafty bench

Author: Mike Byrne

Date: 18:54:19 03/27/05

Go up one level in this thread


On March 27, 2005 at 19:18:56, Dieter Buerssner wrote:

>Bob, perhaps sometimes you pay too little attention to some comments. Vincent
>mentioned, that he used Crafty without TBs. PVs he has shown seem to indicate,
>that Crafty's eval misevaluates some KPK positions as win, when they are draw.
>Vincent said exactly this in a former post.
>
>I almost never get such bug reports for my engine. I'd be very happy for them. I
>myself reported clear Crafty problems in the past. Answers were a bit like: "In
>99.9% of the cases 0.0 eval for KRB-KR is correct". It is not the case. More
>subtle problems were pointed out. I think, only after a really obvious problem
>in Peter Bergers Junior-Crafty time/hardware-odds games, where the same problem
>showed, Bob did some fix.
>
>Mike, Vincent clearly has said, that he tried without TBs. Of course, with
>correct TBs the "c6-problem" will vanish. If Bob does not accept CB-native
>Crafty, he should not allow it, instead of just using it as an excuse. I guess,
>Mathias Feist is creating the CB-native engines. He is most probably doing a
>very good job with it. If there is something strange there, it might be
>interesting for those, who try to improve Crafty.
>
>Regards,
>Dieter


I believe Vincent was testing the wrong position or somehow there was confusion
over the problem.

http://www.talkchess.com/forums/1/message.html?418579

Best,

Michael



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.