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Subject: Re: Some fairly careful analysis of some of the more difficult ECM problems

Author: J. Wesley Cleveland

Date: 13:57:30 05/06/02

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On May 06, 2002 at 13:59:40, Miguel A. Ballicora wrote:

>On May 06, 2002 at 04:30:20, Uri Blass wrote:
>
>>>[D]2kr2r1/2pqbp1p/p1n1b3/1P1pP3/4n3/1BP1BN2/1P4PP/RN1Q1RK1 b - - acd 14; acn
>>>872957292; acs 1799; bm Bh3; ce 0; id "ECM.1426"; pv Bh3 Ne1 Bxg2 Nxg2 Rxg2+
>>>Kxg2 Rg8+ Kh1 Ng3+ Kg1 Ne4+ Kh1;
>>
>>Another positional problem:
>
>Why do you think is a positional problem? I think it is tactical but deep.
>Anyway, In general I do not like this kind of positions because many programs
>find the move because they like a draw (perpetual), when the position is a win.
>That would score better than a program that is looking for a win (because
>positionally thinks it is better) but still did not find how to win.
>For instance, it was shown that there are other ways to get a draw score in this
>position. It was discussed some time ago. People thought there were some cooks
>because they believed that the goal was a draw.
>
>In other words, a test like this might introduce some noise and should not be
>present in a very high quality test suite, IMHO.

I think what is needed is some mechanism where a program needs not only to find
the move, but also have a high enough score to get the problem right.



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