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

Author: Uri Blass

Date: 11:58:21 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.

You are right that Bh3 is winning but programs find it because they see a forced
draw by this move and not because they see a win.

The change in score is small so it is positional problem from their point of
view.

I agree with you that these kind of positions should not be present in a very
high quality test suite.

Uri



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