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Re: [Bug-gnubg] Funny quirck


From: Massimiliano Maini
Subject: Re: [Bug-gnubg] Funny quirck
Date: Wed, 15 Apr 2009 09:33:12 +0200


Well, in the situation everything was optional: optional duoble, optional resign ...
The only strange thing is that the resign is not checked before the cube decision:
if it was the case, gnubg would resign before the cube action.

Not a big deal, but it looks odd to non-experts.

MaX.

Christian Anthon <address@hidden> wrote on 14/04/2009 22:23:35:

> Funny, but right. No reason to change anything, true?
>
> Christian.
>
> On Tue, Apr 14, 2009 at 10:30 AM, Massimiliano Maini
> <address@hidden> wrote:
> >
> > I agree it's "correct". I don't get why gnubg didn't resign beforedoubling.
> >
> > 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.
> >> _______________________________________________ Bug-gnubg mailing
> >> list address@hidden http://lists.gnu.org/mailman/listinfo/bug-gnubg
> > _______________________________________________
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> >
> >

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