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Subject: Re: Position from yesterday, Rxc7!!, problem for all Rybka versions.

Author: Robin Smith

Date: 17:24:32 02/09/06

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On February 09, 2006 at 20:02:55, Mark Ryan wrote:

>On February 09, 2006 at 19:41:26, Steve Maughan wrote:
>
>>Terry,
>>
>>>It is a trivial win, the Black King _cannot_ get access to a8, it's too far
>>>away and the White King would never allow it.
>>
>>Take a look at this variation
>>
>>[Event "5 Minutes/Game + 1 Seconds/Move"]
>>[Site "Engine Match"]
>>[Date "2006.02.09"]
>>[Round "1"]
>>[White "Shredder 9 UCI"]
>>[Black "Spike 1.1"]
>>[Result "*"]
>>[SetUp "1"]
>>[FEN "2r5/2pR1pk1/p1P3p1/P2K4/5P1p/5P1P/8/8 w - -"]
>>
>>1. Rxc7 Rxc7 2. Kd6 Rc8 3. Kd7 Rh8 4. c7 Kf6 5. c8=Q Rxc8
>>6. Kxc8 Ke6 7. Kb7 Kd7 8. Kxa6 Kc7 *
>>
>>As far as I can see, the white king is trapped between a6 and a8, so it must
>>give up control of the a8 corner, force black's king to capture the 'a' pawn and
>>go on a pawn hunt on the king-side.
>>
>>Am I missing something?
>>
>>Steve
>
>Hi, Steve:
>
>Isn't 8...Kc6 even better?  How does White win?
>
>Mark

Hi Mark,

8... Kc6 9.f5 gxf5 10.f4 f6 11.Ka7 Kc7 12.a6 Kc8 13.Kb6 Kb8 14.Kc6 Ka7 15.Kd6
Kxa6 16.Ke6 +-

-Robin




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