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Re: [Bug-gnubg] Funny quirck


From: Massimiliano Maini
Subject: Re: [Bug-gnubg] Funny quirck
Date: Tue, 14 Apr 2009 10:30:08 +0200


I agree it's "correct". I don't get why gnubg didn't resign before doubling.

Pushing your logic further, gnubg should not resign after the double/take:
the opponent could resign next turn :) :) :)

MaX.

"Zulli, Louis P" <address@hidden> wrote on 10/04/2009 17:38:42:

> It is funny, but isn't it the "correct" play by X? If X doesn't
> double, he is certain to lose the match. If X doubles and O passes
> (not a likely response!) then X survives. So the "correct" play by X
> is to double, which O accepts. Now X has no way to avoid losing the
> match, so X resigns. I guess the magnitude of the loss doesn't matter to X.

>  
> ----- Original Message -----
> From: "Massimiliano Maini" <address@hidden>
> To: address@hidden
> Sent: Friday, April 10, 2009 10:55:45 AM GMT -05:00 US/Canada Eastern
> Subject: [Bug-gnubg] Funny quirck
>
>
> Hi all,
>
> enter this position: 2jbQIBjzAAAAAA:EQH7AEAAEAAA
>
>     GNU Backgammon  Position ID: 2jbQIBjzAAAAAA
>                     Match ID   : EQH7AEAAEAAA
>     +-1--2--3--4--5--6-------7--8--9-10-11-12-+  O: gnubg
>  OO | O  X  O          |   | X              X |  4 points
>  OO | O  X  O          |   |                X |  Rolled 66
>  OO |       O          |   |                  |  
>  OO |       O          |   |                  |  
>   O |                  |   |                  |  
>     |                  |BAR|                  |^ 7 point match
>     |                  |   |                  |  
>     |                  |   |                  |  
>     |                  |   |                  |  
>     |       X  X  X  X |   |                  |  
>     |    X  X  X  X  X |   |                X |  2 points
>     +24-23-22-21-20-19------18-17-16-15-14-13-+  X: MaX (Cube: 2)
>
>
> O takes 4 out and the position is gin given the cube and the score.
> If you make gnubg play against himself, X will redouble to 4
> (optional redouble),
> O will take and then X will resign. Very funny :) :)
>
> MaX.
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