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Subject: Re: An idea to generate a new test suite that is not only tactics

Author: Uri Blass

Date: 12:53:46 01/15/01

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On January 15, 2001 at 15:35:20, Jorge Pichard wrote:

>On January 15, 2001 at 14:34:55, Uri Blass wrote:
>
>>On January 15, 2001 at 14:26:23, Jon Dart wrote:
>>
>>>On January 15, 2001 at 12:24:10, Uri Blass wrote:
>>>
>>>>It is possible to use some games and a lot of computer time to genrate a test
>>>>suite.
>>>>
>>>>The idea is to give some top programs to analyze all the positions in the games
>>>>and to give them 24 hours per position.
>>>>
>>>>The test suite can include all the positions that there was an agreement between
>>>>all the top programs about the best move after 24 hours of search when part of
>>>>them needed more than 3 minutes to converge to the best move(otherwise the
>>>>position is too easy).
>>>
>>>To have a good test, the selected move needs to be better than other
>>>alternatives by a significant amount. If, say Rb8 is good but Rc8 has very close
>>>to the same score, then you can't really say that a program which selects Rc8 is
>>>wrong. It could do just as well in an actual game as one that selected Rb8.
>>
>>I guess that in most of the cases that all the programs converge to the same
>>move there is a good reason for it(the difference may be small but if all top
>>programs can find the same move by a long search of 24 hours the program that
>>can see it in 3 minutes has probably better positional understanding)
>>
>>Uri
>
>Using my K6-2 500 MHz Nimzo 8 saw g3 on the first 2.5 minutes and is still
>considering g3 as its best move. I will wait until tomorrow to see if is still
>considering g3 as the best move.
>
>Pichard.

I have not nimzo but I expect g3 to fail low because of kasparov's move in the
game Rd5(it happens to all the programs that I tried)

It will be interesting to know if nimzo can find Ne2.

I believe it has a problem to find this move because it overevaluates passed
pawns(I say it only based on wastcing games of nimzo and I have not nimzo) but
the fact that other moves are bad may force it to find Ne2.

Uri



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