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Subject: Re: Hard endgame position

Author: Ernst A. Heinz

Date: 10:59:10 03/01/00

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On March 01, 2000 at 13:34:57, Dann Corbit wrote:

>On March 01, 2000 at 13:14:07, Ernst A. Heinz wrote:
>
>>>I'd be surprised if programs see a win at normal game-type
>>>time controls (other than 'postal' games).
>>
>>"DarkThought WCCC'99" fails high on Kf5 in iteration #27 after
>>roughly 15 min. on a 500MHz Alpha-21264.
>>
>>00:15:14 27.01 Kf5 Ba1 >=1.59! #449961953
>>
>>This is by no means a postal-type time control ... :-)
>
>Took 4 minutes for the fail high on crafty, and at 7 minutes was evaluated at
>1.57 pawns.  But even after 10 hours, I did not clearly see the win.  Crafty
>would have played the move instantly.  But to see a win, I think you need to
>see more than a 1.5 pawn advantage.

Oh, you did not understand what I meant.

"DarkThought" also chooses the move Kf5 instantly and sees an advantage
of +1.22 for Black from iteration #12 to iteration #26 inclusively.

In iteration #27 it fails high with an *unresolved* score of >= +1.59.

When I get access to the Alpha again, I will try to let it resolve
the fail high.

=Ernst=



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