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Subject: Re: A good test position

Author: José de Jesús García Ruvalcaba

Date: 04:17:00 02/10/04

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On February 09, 2004 at 12:18:47, Joachim Rang wrote:

>On February 09, 2004 at 10:00:00, Albert Silver wrote:
>
>>Jose Garcia Ruvalcaba posted some correspondence games of his at CTF, including
>>a loss in 1999 to Anatoly Sidenko. Sidenko came up with a superb move, that
>>makes a good test position for today's super bots.
>>
>>                                          Albert
>>
>>[Event "CM-1999-0-00086"]
>>[Site "IECG"]
>>[Date "1999.08.30"]
>>[Round "1"]
>>[White "Sidenko, Anatoly"]
>>[Black "Garcia Ruvalcaba, Jose"]
>>[Result "1-0"]
>>
>>1. d4 Nf6 2. Bg5 g6 3. Nc3 d5 4. f3 Bg7 5. Qd2 Nc6 6. e4 dxe4 7. d5 e3 8.
>>Bxe3 Nb4 9. O-O-O c6 10. dxc6 Qxd2+ 11. Rxd2 Nxc6 12. Bb5 O-O 13. Nge2 e5
>>14. Rhd1 Be6 15. f4 Bh6 16. Rd6 Rfc8 17. Kb1 Ng4 18. Bc1 Bf8 19. Bxc6 bxc6
>>20. fxe5 Nxe5 21. R6d4 Bg7 22. Nf4 Bg4 23. Re1 Rd8 24. Rde4 f6 25. h3 Bf5
>>26. Rb4 Bf8 27. Ra4 a5 28. g4 Bd7 29. Ne4 Kf7
>>
>>[D]r2r1b2/3b1k1p/2p2pp1/p3n3/R3NNP1/7P/PPP5/1KB1R3 w - - 0 30
>>
>>30. Nxf6!! Kxf6 31. g5+ Kf5 32. Nd5!
>
>
>is the position after 32. Nd5 supposed to be winning for white or just drawing?
>Have you any variations?
>

White wins after 32.Nd5. The full game was posted at the CTF.

>What about 31...Kf7 instead of Kf5? Shredder says that black remains with a
>slight advantage after 31...Kf7.
>

I agree with Shredder that 31... Kf7 is better, since it reaches a pawn down
ending with some drawing chances. I disagree with Shredder's evaluation, it is
clear that white has still the advantage.
José.

>regards Joachim



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