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Subject: Re: Tough passed pawn theme from ECM98

Author: Dann Corbit

Date: 16:40:26 02/22/00

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On February 22, 2000 at 19:13:10, Howard Exner wrote:
[snip]
>>Here is the CAP record.  It was not solved at normal time controls.
>
>I usually limit the serch on my K2-233 to 10 minutes. For that time Rebel
>Century 1.2 did not come up with b2 either. What time do you limit the search to
>for Crafty?

Approximately 12 minutes of PII 300 MHz CPU time.

>I'm guessing that someone will post a program finding this. I used the word
>"tough" in the header thinking that it would be tough for computers but am
>hoping someone will post that program X finds it. Maybe Hiarcs or Tiger?Probably
>not so tough for a human since the b3b2 followed by exf4 is fairly linear.
>
[D]8/6Bp/6p1/2k1p3/4PPP1/1pb4P/8/2K5 b - -

I am guessing that NULL move pruning programs will not see the solution because
you have to throw away the bishop, and you do not benefit instantly after that.

Here is one of those things where it is much easier for a human to see the
answer than for a computer.

I will be surprised if any program solves it in less than one hour.



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