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Subject: Re: Kramnik's 11. Rxb7 was already a CAP record!

Author: Peter Kappler

Date: 17:04:53 10/13/00

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On October 13, 2000 at 13:34:11, Dann Corbit wrote:

>On October 13, 2000 at 08:06:14, Vincent Diepeveen wrote:
>[snip]
>>with cap you can never rely on its score as it' sjust a computer search
>>score without knowing what program did the search.
>>
>>like using cap in najdorf knowing most used program is crafty is a bit
>>weird of course. First of all i tactical outsearch with a dual PIII800 in
>>a tournament game already the cap data, secondly i can't rely on it
>>at all.
>>
>>So it's not usuable. i'm not surprised that CAP captures a pawn at b7
>>at all.
>>
>>If you rely on cap you can never win a tournament in advance, so you can't
>>trust it, so you can't use it. so saying it captures a pawn here i
>>believe at once, but it doesn't change the opinion that it's a useless
>>statement as too many important moves it plays wrong.
>>
>>More as a search of DIEP will reveal.
>
>Perhaps by minimaxing the CAP data, something better can be created.  Time will
>tell.
>
>At any rate, there are many potential uses for the data.  Making a computer play
>better is one possibility, but it may also be useful for novelty search and many
>other notions.


Are there any known cases where the CAP data has uncovered a novelty or cast
serious doubt on modern GM assessment of a known opening position?

If you search the CAP database for positions with abs(ce) > X, where X is a
pretty high evaluation (~1.5-2.0 pawns), how many records do you get?

--Peter



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