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Subject: Re: just fairy tale chess? a position to analyse

Author: John Merlino

Date: 11:07:50 07/12/03

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On July 11, 2003 at 19:30:58, John Merlino wrote:

>On July 11, 2003 at 19:07:24, Ingo Lindam wrote:
>
>[D]rn1q1b1r/p2n1k2/1p2pp2/1Bpp2pp/3PPBb1/2P2N2/PPQN1P1P/R3K1R1 w Q g6 0 1
>>
>>Anybody here can prove or refute with or without help of a computer programm
>>correctness of bishop sacrifice by 13.O-O-O played in this position?
>>
>>Internette Gruesse,
>>Ingo
>
>With the help of Chessmaster 9000, it appears that if Black accepts the
>sacrifice then White can force a potentially winning position. Here's one line:
>
>1.O-O-O gxf4 2.exd5! exd5 3.Rxg4! hxg4 4.Qf5 gxf3 5.Qxd5+ Ke8 6.Qe4+ Qe7
>7.Qxa8 Qd8 8.Qe4+ Qe7 9.Qb7 Qd8 10.Nxf3 a6 11.Bd3
>
>and CM9000 scores the resulting position as about 0.8 for White.
>
>However, if Black ignores the sacrifice and plays 1...a6!, then he should be
>able to hold. At least, that's what about 15 minutes of poking around has showed
>anyway....
>
>jm

Just for amusement's sake, I analyzed the position with a different personality
(this time CM_SKR), and it prefers a different line for White if Black accepts
the sacrifice:

1.O-O-O gxf4 2.exd5 exd5 3.h3 cxd4 4.hxg4 dxc3 5.Nc4! cxb2+ 6.Kb1! Bc5 7.Rxd5
Kf8 8.Bxd7 Nxd7 9.Qf5

and a completely won game for White, which CM_SKR scores as almost +7.0 for
White.

This personality also feels that 1...a6 holds fine for Black.

jm



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