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Subject: Re: Interesting king security position

Author: Ernst A. Heinz

Date: 09:42:13 05/21/98

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On May 20, 1998 at 06:58:47, Roland Pfister wrote:

>Watcom-Patzer on K6-233 DOS Window under WinNT 4.0 (16 MB Hash ?)
>
>It.5  0:02  -M7   Bxa8
>       0:03  3.35  Ne5
>It.6  0:06  3.70  g4
>It.7  0:22  3.62  g4
>It.8  2:01  3.12  b6
>It.9  3:28  3.46  g4
>
>That is the version with lazy evaluation window = 130 ( = two pawns ).
>Djordje, if you want to reproduce it, set the variable "poswin" to 130.
>
>The previous version that had a lazy eval window of 96 (1.5 pawns)
>needs very long to see that Bxa8 looses. So a minor change produces
>very different results.

Really strange ... but anyway, how does "Patzer" see the mate
(if it really is one, I am still not sure) so quickly?

Do you use singular extensions or something else special?

Or is it maybe a bug in "Patzer" that makes it solve this very
position extremely fast?

=Ernst=



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