Re: Bug hunt

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Article #1886

#1886

From: Simon Waters
Date: Fri, 18 Jan 2002 17:35

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Simon Waters wrote:
> 
> Noted a bug in the GNU chess code.
> 
> White to move.
> White Kd6, White Pc7
> Black Kb7

Okay, the program fails low as it inserts "-rootscore" which is
always -32768 as the score when it runs out of time.

It then researches for a worse move (-inf, previousalpha), and
picks the naff move.

The re-search after fail low has a "commented out" test for
timeout, which if uncommented would prevent the problematic
search if the time has indeed run out.

Presumably it was commented out for a reason?!

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From: Simon Waters <Simon@wretched.demon.co.uk>
Newsgroups: gnu.chess
Subject: Re: Bug hunt
Date: Fri, 18 Jan 2002 17:35:15 +0000
Organization: Eighth Layer Limited
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