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Subject: Re: Have programs refuted any openings yet?

Author: Dann Corbit

Date: 10:50:33 08/24/01

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On August 24, 2001 at 13:43:18, Les Fernandez wrote:

>On August 24, 2001 at 12:58:47, Roy Eassa wrote:
>
>>On August 24, 2001 at 12:51:34, Peter Hegger wrote:
>>
>>>Hello,
>>>For the average patzer like myself I'm sure the QGD, QGA, etc... will endure as
>>>long as we do.
>>>But in top level chess every nuance and permutation of an opening system could
>>>mean its eventual demise.
>>>My question therefore is: have any openings been refuted by computers to the
>>>point where top level players will not adopt them anymore?
>>
>>
>>I'm not the big expert here, but I have two thoughts on this topic.  First, most
>>of the time the strong chess programs play with opening books, so they are not
>>doing algorithmic calculation/evaluation of positions until well into the
>>opening.  I think that's because the openings are sophisticated in ways
>>computers are not, and practice has shown that they do very badly without the
>>help of books.  Thus they are not given the chance to refute known openings.
>>
>>The second thought is that they probably have refuted some sub-sub-variations of
>>some openings, although I can't come up with a specific example.  But they
>>certainly haven't refuted some commonly-played opening, like QGD or QGA, such
>>that a move that was commonly played as early as move 3 or 4 is now refuted.
>
>A good person to ask this question to is Dann Corbit who is the founder of the
>C.A.P. project.  This project has been in existence for about 4 years ( I
>think).  What we do is analyze various chess positions by computers and Dann has
>been gathering all this info into a large database.  I know that one of the
>projects Dann launched some time ago was analyzing standard openings.

The original analysis for that project can be found here:
ftp://cap.connx.com/pub/Public_CAP_Results/ECO/

Many of the results have been improved, but I have not bothered to compile them
yet.



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