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Subject: Re: Post your longest mate in a 5 man position. I found a mate in 98

Author: Uri Blass

Date: 11:31:07 01/09/02

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On January 09, 2002 at 12:49:18, Robert Hyatt wrote:

>On January 09, 2002 at 05:03:19, Terry Ripple wrote:
>
>>This is a mate in 98 using all 5 man Namilov bases! I used Hiarcs 7.32 but Tiger
>>14.0 says mate in 97 because i believe it announces the number to mate after it
>>made it's first move of the solution!
>>
>>N6k/7p/8/8/8/8/8/K6N w - - 0 1
>>
>>For those who can't read the FEN here is the ASCII position. (White to move)
>>wKa1,Na8,Nh1/bKh8,Ph7
>>
>>PS. I'am interested to know what the longest distance to mate is in a 5 man
>>position just for curious reasons.
>>
>>Best regards,
>>Terry
>
>
>I don't remember the positions, but Crafty once announced a mate in 103 on
>ICC in a KNN vs KP ending, and Ferret beat that with a mate in 104 announcement
>in the same kind of ending...

I doubt if they can win against correct defence.
The position may be drawn by the 50 move rule and a draw like this already
happened in comp-comp games.

Crafty should never announce mate in 103 based on existing tablebases and a
score of mate in 103 should be translated to some material advantage based on
the estimated probability to win.

Uri



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