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Subject: Re: Does this position blow up your program? 2

Author: Drexel,Michael

Date: 04:10:01 12/26/02

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On December 26, 2002 at 06:55:26, Drexel,Michael wrote:

>On December 26, 2002 at 06:32:31, Uri Blass wrote:
>
>>On December 26, 2002 at 06:24:53, Drexel,Michael wrote:
>>
>>>On December 26, 2002 at 05:17:03, Sune Fischer wrote:
>>>
>>>>On December 25, 2002 at 23:23:48, Drexel,Michael wrote:
>>>>
>>>>>[D] Q2Q2Q1/1R6/3BR3/3k3N/2RB2Q1/5R2/Q2Q2Bp/3N3K w - - 0 1
>>>>>
>>>>>Problem:
>>>>>White to move
>>>>>If white gives check it has to be mate in one.
>>>>>Find a legal position with the highest number of possible checks.
>>>>>
>>>>>I discovered this 5 years ago. Took me about 16 hours to find it.
>>>>>I think it is possible to find a proof that it is not possible to find more:
>>>>>
>>>>>85 mates in one! :-)
>>>>
>>>>Are you sure, I "only" count 78 mates??
>>>>
>>>>Mates ply 0........: 0
>>>>Mates ply 1........: 78
>>>>Mates ply 2........: 0
>>>>Mates ply 3........: 468
>>>>Mates ply 4........: 0
>>>>Mates ply 5........: 9538
>>>>
>>>>how did you count them?
>>>>
>>>>>I must have been crazy.
>>>>
>>>>Yes, you will fit right in here :)
>>>>
>>>>-S.
>>>
>>>I think I havent used calculator or computer to count them.
>>>I presume simpy like that:
>>>
>>>Rb7 14
>>
>>No
>>
>>Rb7-b3 is not mate.
>>There are  more mistakes
>>Uri
>
>Yes, 78 is correct. This is not a solution of the problem. I have checked out
>other examples where Rc4 was protected first.

I have checked it in my old database.
This was my first try, but unfortunatley Bd6-e5 was no mate so i tried to change
it.
[D] B2Q2Q1/1R6/Q2BR3/3k4/2RB2NK/5R2/Q2Q3p/3N3B w - - 0 1



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