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

Author: Larry Griffiths

Date: 13:30:19 10/01/00

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On October 01, 2000 at 05:14:42, Mike Adams wrote:

>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
>
>yes but take a look at this position. pulsar is black and it plays Nxg3.
>
>[D] r1bq1rk1/ppp2p2/2n4p/3pP1pn/3P4/2P2NB1/P1P1B1PP/R2QK2R b KQ - 0 14
>
>

Im not a GrandMaster, but I think that having the H and G pawns advanced so far
in front of your King is a really bad idea.  I try to keep the side pawns from
advancing until the endgame in my program.  I still have a problem where I
castle sometimes on a side that has advanced A,B,G or H pawns.

Larry.



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