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Subject: Re: Easy mate

Author: John Merlino

Date: 11:34:26 09/13/03

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On September 13, 2003 at 14:31:55, Rafael Andrist wrote:

>On September 13, 2003 at 14:08:37, John Merlino wrote:
>
>>On September 13, 2003 at 10:23:41, Frank Phillips wrote:
>>
>>>[D]8/4k3/8/8/4Kp1p/5N1N/8/8 w - -
>>>
>>>Just an amusing position.
>>>
>>>White to move and win.  Perhaps the longest forced mate my program has played.
>>>I was not sure whether it would be caught out by the 50 moves rule.  (Any credit
>>>goes to Eugene of course.).
>>>
>>>It traded down from B+Pawns versus 2N+Pawns to reach this endgame.  My heart
>>>sank and I was already to fix yet another evaluation quirk - maybe still need
>>>to.
>>>
>>>Frank
>>
>>Kxf4 is a forced mate in 90 moves and it will NOT be caught by the 50-move rule.
>
>No, after Kxf4 it is a draw. You need 51 moves to the next forced capture/pawn
>push with best defence.
>
>Also, I did a short search up to depth 13 and could not find a win which would
>not have been prohibited by the 50-move rule.
>
>The endgame is anyway only won in about 23% of all cases and even then, you will
>fail to win it in more than 50% without the appropriate endgame tables.
>
>regards
>Rafael B. Andrist

You're probably right, since Black has many options. But can you prove it by
posting the moves?

jm



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