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Subject: Re: Test position: Crafty-IsiChess

Author: Robert Hyatt

Date: 17:59:32 08/21/05

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On August 21, 2005 at 14:08:54, Janos Keinrath wrote:

>[D] rr4k1/3qbppp/3p1n2/n2Pp3/4PP2/1p2B1PP/1PN3B1/1R1QR1K1 w - - 0 24
>
>In this position crafty played 24. Na1, but I don't understand why.
>On a1 the knight out of play, only attack black b3 pawn which is well
>protected, and until 43th move (almost 20 moves!) stands here.
>Every human player would play Na3.


Intuition says so.  But the question is, is there some deep tactical problems
with Na3?  For one Bd8, Bb6, Bd4 and the B2 pawn is under attack, and with the
knight being hit by at least the rook at a8, there may be a problem.  I've not
looked yet.  And as you might have noticed, I criticized the Na1 move myself.
But after looking at it during the game, I thought "OK, lets get rid of the
knight at a5 holding the b3 pawn.  We have a bishop we can put on the knight.
Now we have the knight and queen already on b3, get the rook over and up, and
then bring the other rook over and up, and we can take the b3 pawn with the
knight and things look good again.  Of course, black gets to play some moves in
there, and this long-term plan might not be reachable.

It's an interesting position...



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