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Subject: Re: penalty for opening H file of opponent when white and castled kingside

Author: Robert Hyatt

Date: 08:46:21 10/02/00

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On October 01, 2000 at 04:48:41, Uri Blass wrote:

>On October 01, 2000 at 04:20:46, Mike Adams wrote:
>
>>    I've noticed that pulsar thinks the doubled pawns are worth more than the
>>danger of exposing its castle.  When its white and castles kingside this is
>>particular dangerous when it opens the H file especially if the rook is sitting
>>right there on H8.  I'm not as concerned about the F and G files because I think
>>it can better defend these files but it can be very difficult to moblize the
>>pieces to defend the H file.  Should i put a penalty in at 1.5 times the doubled
>>pawn bonus?
>
>Chess is not a simple game.
>There are cases when open h file is not dangerous  inspite of castling in the
>king side and there are cases when open f file is dangerous.
>
>I think that it is impossible to answer your question because the right panelty
>for open file should be dependent in the rest of the evaluation.
>
>Uri


Right answer.  IE if the opponent has a rook on the file, then it is more
important.  If rooks are gone, who cares?  Etc.  Pawn structure has to factor
in along with piece placement, pieces on the board, etc...



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