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Subject: Re: Interesting test position--Compter ver GM

Author: Roy Eassa

Date: 10:36:37 11/29/02

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On November 29, 2002 at 04:59:01, Rex wrote:

>RebelRex(C) ver Talion(GM) on ICC.
>
>
>Here RebelRex played 37...b3 for the loss.  How long does it take your computer
>to avoid this move because of the next GM's move 38.Nxg4!!
>
>[D]r7/2q1p3/3pPkp1/2pP1pNp/1pP2Bb1/3BN1K1/rP1R4/4R3 b - - 0 1
>
>


1...b3?

   [1...Kg7 2.Nxg4 fxg4 3.Rf2 Ra1 4.Bc1 Qa5 5.Rf7+ Kg8 6.Rh7 b3
    7.Rh1! Rxc1 8.Rh6! +- e.g., Rxh1 9.Rxg6+ Kh8
       (9...Kf8 10.Nh7+ Ke8 11.Rg8#)
    10.Nf7+ Kh7 11.Rg5#]

   [1...Ra1 2.Nxg4+ hxg4
      (2...fxg4 3.Ne4+ Kg7 4.Rxa1 Rxa1 5.Rf2 Rh1 6.Bg5 Rh3+ 7.Kg2 Rf3
       8.Rxf3 gxf3+ 9.Kxf3 =)
    3.Rxa1 Rxa1 4.Rh2 Kg7 5.Rh7+ Kg8 6.Rh6 Kg7 7.Rh7+ =]

2.Nxg4+ hxg4

   [2...fxg4 3.Rf2 Kg7 4.Bd2 h4+ 5.Kxg4 Rf8 6.Bc3+ Rf6 forced
    7.Rxf6! exf6 8.e7 Qc8+ 9.Re6 and Black is mated soon]

   [2...Kg7 3.Ne3 +-]

3.Rh1! Rf8 4.Rh7 Ra1 5.Nf7 g5 6.Rdh2! Rg1+ 7.Kf2 g3+ 8.Bxg3 Rg8
9.R2h6+ Rg6 10.Ne5! Rxg3

   [10...dxe5 11.Rf7#]

11.Nxg6 g4 12.Kxg3 Qc8 13.Kf4 Qe8 14.Ne5+ Qg6 15.Rf7#




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