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Subject: Re: CCT8 - Spike v Rybka so far

Author: John Merlino

Date: 11:59:24 02/26/06

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On February 26, 2006 at 14:20:07, Greg Simpson wrote:

>On February 26, 2006 at 13:53:14, John Merlino wrote:
>
>>On February 26, 2006 at 13:41:14, John Merlino wrote:
>>
>>It's pretty much over now. Spike may have been lost already, but it appears to
>>have blundered badly with 31.Bd1. The King gives Rybka a +5.3 score....
>>
>>[Event "ICS Unrated Standard match"]
>>[Site "chessclub.com"]
>>[Date "2006.02.26"]
>>[Round "-"]
>>[White "SpikeX"]
>>[Black "Rybka"]
>>[Result "*"]
>>[WhiteElo "2692"]
>>[BlackElo "2581"]
>>[TimeControl "3000+3"]
>>
>>1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 Bc5 7. a4 Rb8 8.
>>c3 d6 9. d4 Bb6 10. Na3 O-O 11. axb5 axb5 12. Nxb5 Bg4 13. Bc2 Bxf3 14.
>>gxf3 Qd7 15. Kh1 Ra8 16. Rxa8 Rxa8 17. Ba4 d5 18. Rg1 dxe4 19. Bg5 Qf5 20.
>>Na3 Nd8 21. dxe5 Bxf2 22. Bxf6 Bxg1 23. Bxd8 exf3 24. Bc2 Qh3 25. Qxg1 Rxd8
>>26. Nc4 Qh4 27. Qf1 g5 28. Bb3 Qf4 29. Kg1 Kg7 30. Ba4 g4 31. Bd1
>>*
>>
>>[D]3r4/2p2pkp/8/4P3/2N2qp1/2P2p2/1P5P/3B1QK1 b - - 0 31
>>
>>jm
>
>Toga does sees a big advantage for black there no matter what white does.  The
>last good chance for white may have been here:
>[D]r5k1/2p2ppp/1bn2n2/1N2pqB1/B2Pp3/2P2P2/1P3P1P/3Q2RK w - - 0 20
>
>After 20. Nxc7 Rxa4 Toga sees a draw.

You're probably right about that. I have no idea why Spike played 20.Na3,
backing off a nicely-placed Knight. Maybe Spike thought it could eventually
bring it over to the Kingside?

And CM9_R1 agrees with the draw assessment, and sees this as the entire line:

20.Nxc7 Rxa4 21.Bxf6 Qxf6 22.Qxa4 Bxc7 23.d5 Qxf3+ 24.Rg2 e3 25.dxc6 h5 26.fxe3
Qf1+ 27.Rg2 Qf3+ etc....

jm



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