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Subject: Re: Another blocked position -- Analysis with Crafty 17.10

Author: Olaf Jenkner

Date: 13:39:10 08/15/00

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On August 15, 2000 at 03:15:50, Ed Schröder wrote:

>On August 14, 2000 at 19:11:45, Olaf Jenkner wrote:
>
>>On August 14, 2000 at 08:43:08, Enrique Irazoqui wrote:
>>
>>>1. Ba4+ Kxa4 2. b3+ Kb5 3. c4+ Kc6 4. d5+ Kd7 5. e6+ Kxd8 6. f5 *
>>
>>The computer does not have to see the draw to solve this study.
>>The solution can be found, when all other moves give a worse
>>evaluation.
>>To find the value of the drawn position I analysed the position
>>after 1.Bxa4+ Kxa4 2.b3+ Kb5 3.c4+ Kc6 4.d5+ Kd7 5.e6+ Kxd8 :
>
>There is another side effect you seem to forget. Black might for
>instance Rc6 and I am pretty sure comps will capture the rook and
>white will lose after all.
>
>Ed
>
I thought about it. In practical play the white evaluation sinks
below the draw-value of about -13.7 . Black won't play Rc6, because
it looks bad. In deeper searches this move can be played because
white should not capture the rook. This doesn't change the fact, that
the value of the blocked-pawn-position is about -13.7 .

OJe




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