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Subject: Re: Queen-side castling - problem for chess programs?

Author: John Hatcher

Date: 10:10:14 02/19/01

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On February 19, 2001 at 07:44:30, John Wentworth wrote:

>This is just an observance and may be completely wrong, but it seems that when a
>program castles Queen side his chances of losing go up by a lot. Every time I
>see a program do this, I say to myself he's going to lose and I bet more than
>60% of the time he does. This may be a problem with humans vs humans as well, I
>don't know. Anyone else notice this?

There is a "chess" reason for this, quite apart from any computer reason.  If
players castle on opposite sides (one King-side, one Queen-side) the chances of
losing AND of winning go up.  Opposite side castling creates a sharp, tactical
position with violent pawn storms and piece attacks.  That's true for humans and
for computers.

John




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