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Subject: Re: Comet vs Diep from Paderborn fixed diagram

Author: Howard Exner

Date: 20:48:17 02/10/00

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On February 10, 2000 at 23:47:10, Howard Exner wrote:

>On February 10, 2000 at 23:11:02, Robert Hyatt wrote:
>
>>On February 10, 2000 at 22:22:02, Howard Exner wrote:
>>
>>>[D]8/4k3/2bq4/1p6/p6P/P5P1/1P2QP1K/8 b - - id Comet - Diep;
>>>
>>>Is this a tough choice for a computer to make? Diep played Qe6 and Comet went on
>>>to win.
>>>What do other programs prefer here? Seems that in this case leaving the Queens
>>>on would benefit black or at least exchanging them under more favourable
>>>circumstances.
>>
>>
>>This game was a dead draw until Diep played Kf7 rather than Kg6 a few moves from
>>this point.  Crafty saw that turning into a KPP vs KB ending that the tablebases
>>said was 'drawn'.  I think vincent's program thought (for reasons unknown) that
>>KB vs KPP was lost for the KB, so he wouldn't go for that.
>>
>>I had crafty analyzing during the game, and until he played Kf7 the score was
>>zero.  After Kf7 my score jumped to +2.5 and kept going.  within 5 moves it
>>was at +10 or so...
>
>This is the position later in the game that you refer to.
>
>[D]8/8/5k1P/1p6/p4PP1/P5K1/1P2b3/8 b - - id Comet - Diep; am Kf7;



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