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

Author: Robert Hyatt

Date: 08:57:17 10/02/00

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On October 01, 2000 at 07:45:22, Mike Adams wrote:

>the question for me is not can crafty see that pawn take Knight is bad but at
>what depth. I'm sure crafty is blinding fast compared to pulsar. But i want to
>know at what depth it realizes thats a bad move. My freind reports that an older
>version of crafty saw it at depth 6. pulsar took depth 7. Anyway i have a little
>work making sure my search is correct. i just rewrote my check extensions and
>static see so strange things can happen i suppose.
>   Yes knight takes bishop opening the h file may not be the end of the world
>but anyway i can fix its aggressive castle pawn pushes easily enought. I'm
>basicly running on zero king saftey though i have a decent algorithm i'm just
>not weighting it enough.  Anyway that should be fun to make some changes in
>evaluate weights which will hopefully produce better play.


The current version of crafty considers Nxg3 at ply=1, but at ply=2 and
beyond never considers the move at all.  It realizes how wrecked black's
kingside is.  Nxg3 hxg3 Kg7 seems pretty solid but black's king is in a
precarious position and it doesn't have to be.



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