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Subject: Re: Crafty vs Crafty

Author: Robert Hyatt

Date: 20:11:29 11/09/98

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On November 09, 1998 at 20:44:42, Jeremiah Penery wrote:

>On November 09, 1998 at 18:08:45, James T. Walker wrote:
>
>>I also saw crafty with K,Q,PP vs a K sac the Q for nothing just because it has
>>the KPPK tabelbase and knew it was a win.  This looks very strange.
>>Jim Walker
>
>Don't be surprised if it sacrifices the first queen it promotes of the two,
>also.  I've had it go through as many as 4 queens just because it knew it could
>still win.  Seems odd, but as long as it wins, I have no problems with it. :)
>
>Jeremiah


one better than that... while debugging 16.0, I broke the multiple
directory stuff.  And played a bunch of games on ICC not knowing this.  I
was watching it play a KQNP vs KP ending...  and it promptly checked 3 times
with the queen, forcing the opponent to the edge of the board, then it checked
one more time, but in a way that forced the move KxQ, then it promoted the
pawn to a knight and announced a mate in 86 moves in a KNN vs KP ending.  The
problem was that most of the tablebases were in the inaccessible directory so
it only had the KNNK* files to use...

To say I was astounded would be an understatement... :)



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