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Subject: Re: Is Crafty 18.10 the final version?

Author: Robert Hyatt

Date: 12:40:29 09/04/01

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On September 04, 2001 at 14:02:26, Roy Eassa wrote:

>On September 04, 2001 at 12:16:55, Robert Hyatt wrote:
>
>>The kind of anti-computer tactic I have been working on is blocked pawn
>>positions.  I haven't seen _any_ program that knows how to exploit such
>>positions, including my own (at present).  Crafty has become fairly adroit
>>at preventing most blocked positions, but it doesn't know when to block them
>>when it should (this will come in time).  However, against computers this
>>is worthless code since none know how to block the position, then exploit
>>it against an opponent.  Which means that simply crafty is going to spend time
>>trying to avoid blocked positions for the wrong reasons, against another
>>program, and end up in an inferior (but unblocked) position and lose, where it
>>could well have drawn by being more conservative.  This "change" in the eval
>>will happen before too much longer, so that it will know when to avoid blocked
>>positions and when to block them itself to avoid difficulties.  Right now it
>>is all of one and none of the other, which is not so great.
>>
>
>(Jokingly:) Crafty should pop up a message box at the beginning of each game,
>saying:
>
>"WARNING: If you want Crafty to be the strongest possible opponent in the
>upcoming game, you MUST now say whether Crafty's opponent is a human being or a
>computer program!"
>
>There would be two radio buttons, and the selection would completely determine
>whether or not Crafty should go out of its way to avoid blocked positions.
>
>Problem solved.


On a chess server this info is already present.  It just doesn't (yet) use it
to disable the anti-blocking code.



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