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Subject: Re: If you like to solve a mate... Correction!

Author: leonid

Date: 12:45:05 02/09/01

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On February 09, 2001 at 11:51:37, Pete Galati wrote:

>On February 09, 2001 at 08:40:05, Uri Blass wrote:
>
>>On February 09, 2001 at 08:25:02, Hans Havermann wrote:
>>
>>>On February 09, 2001 at 06:51:15, leonid wrote:
>>>
>>>>>[D]1bqQBnRn/3N2Qb/Q1QN2np/1Q1Q1qpk/4Qqbn/2B1Qrnn/2Q5/K1R5 w - -
>>>
>>>Black has too many promotions. :)
>>
>>Right.
>>
>>Most chess programs cannot analyze positions when black has 7 promotions and 2
>>pawns.
>>
>>Chessbase programs do not accept the position and the engine is not
>>important(after Board, Setup position,paste Fen I cannot tell the program ok.
>>
>>I think that it is a bug in the chessbase interface because the interface is
>>made for many engines and it is possible that some of the engines have no
>>problem to analyze the illegal position.
>>
>>I think that the interface should allow putting illegal position in the board
>>and I do not understand the decision not to allow putting illegal positions.
>>
>>Uri
>
>Well, look at it this way though, this position crashes Crafty when I paste it
>into Crafty running in text mode, and I can paste the position into Winboard,
>but niether TCB nor Crafty will analyze the position once it's there.  I suppose
>I could fix the position so it IS legal, but then it would be a different
>position.
>
>Pete

I have no idea why in Crafty it could be the problem to solve position like
above. I never used Crafty for this purpose. I used it only for playing chess.
Great program! But I was very interested to know why many of programs that I
used around 4 eyars ago crashed on positions, even every modest compared with
the last one. Now I only have some guessing about what it could be. Maybe some
programs use some look-up tables that is the beginning for all limitations.
Maybe number of moves was limited for each ply, taking in consideration that DOS
was very restrictive system. I just don't know...

Leonid.



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