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Subject: Re: It's not a mate in 13

Author: Olaf Jenkner

Date: 09:36:22 05/06/03

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On May 06, 2003 at 12:31:02, Enrique Irazoqui wrote:

>On May 06, 2003 at 12:23:37, Olaf Jenkner wrote:
>
>>On May 06, 2003 at 07:32:45, Enrique Irazoqui wrote:
>>
>>>Another study of Grigoriev, this time a mate in 11.
>>>
>>>[D]4Q3/4pp2/8/1p5P/1P1p2p1/K7/1p3P2/k7 w - - 0 1
>>>
>>>Grigoriev,N - Study
>>>1934
>>>
>>>1.Qd8 e5 2.Qg5 f6 3.Qh6 f5 4.Qg5 b1Q 5.Qd2 f4 6.h6 g3 7.h7 g2 8.h8Q g1Q 9.Qxd4+
>>>exd4 10.Qxd4+ Qb2+ 11.Qxb2# # 1-0
>>>
>>>Enrique
>>
>>After 8.h8Q black plays better Qd4+ and the mate comes one move later.
>>
>>A brute force search did not find a mate in 13.
>>
>>Olaf Jenkner
>
>8... Qd4+ is not possible. Which line makes it longer than mate in 11?
>
>Enrique

Sorry, Qd3+



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