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Subject: Re: Tactical Test: Avoid move Bxb7

Author: Mark Young

Date: 20:33:39 05/18/99

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On May 18, 1999 at 19:55:37, Gerrit Reubold wrote:

>
>Which programs are able to avoid Bxb7 in the following position (it is from one
>of my human-human games, though not actually reached)
>
>1r4k1/1ppq1pb1/3p2p1/1P2p2p/Q6P/4P1P1/P4PB1/1bB1K2R w K - 0 20
>
>avoid move Bxb7, because of Rxb7 Qa8+ Kh7 Qxb7 Qg4! -+ (threat Bd3)
>White is a pawn down, but he should be able to defend longer by not playing
>Bxb7.
>
>Greetings,
>Gerrit

I tested 3 programs on this position, Junior 5, Hiarcs 7, and Fritz 5. I let the
programs search for 10 mins on this position. Only Hiarcs 7 was able to avoid
Bxb7.

Hiarcs7

9->29 212 g2h3 d7d8 a4b3 b1e4 o-o c7c6 h3g2 e4xg2 -167

Junior5

Bxb7 > 10min.

Fritz5

Bxb7 > 10min.



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