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Subject: Re: 3 hard positions

Author: Jeremiah Penery

Date: 22:00:58 02/07/00

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On February 07, 2000 at 18:35:34, Paulo Soares wrote:

>On February 07, 2000 at 17:49:54, Jeremiah Penery wrote:
>
>>On February 07, 2000 at 15:06:06, Vincent Lejeune wrote:
>>
>>>3 hard positions, if you want to torture your favourite chessengine for long
>>>minutes ...
>>>White to play and win!, The keymove is unique for each one.
>>>N°1 will cause serious problem for nullmover
>>>Solution below ...
>>>
>>>Good work ! ;)
>>>
>>>[D] 2k1r3/3q4/8/8/8/8/5RK1/6Q1 w - -
>>>[D] 8/8/1P3P2/8/8/8/8/b2nk2K w - -
>>>[D] 7Q/3k2p1/6p1/8/1K2Np2/8/8/5q2 w - -
>>>
>>>[Event "?"]
>>>[Site "?"]
>>>[Date "????.??.??"]
>>>[Round "?"]
>>>[White "1"]
>>>[Black "?"]
>>>[Result "*"]
>>>[SetUp "1"]
>>>[FEN "2k1r3/3q4/8/8/8/8/5RK1/6Q1 w - - 0 10"]
>>>[PlyCount "21"]
>>>
>>>10. Rc2+ Kb8 11. Rb2+ Ka8 12. Qa1+ Qa7 13. Qh1 $3 Rb8 14. Kh2+ Rb7 15. Qd5 Qb8+
>>>16. Kg2 Qc7
>>
>>Qc7 is bad.  I don't see how white can win after Qc8.
>
>
>7....Qc8 loses to 8. Ra2+

I see it now.  It's quite a deep combination.



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