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

Author: Dieter Buerssner

Date: 16:18:56 03/27/05

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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



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