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Re: [Bug-gnubg] Optional redouble, or is it automatic
From: |
Joern Thyssen |
Subject: |
Re: [Bug-gnubg] Optional redouble, or is it automatic |
Date: |
Mon, 9 Sep 2002 12:28:05 +0000 |
User-agent: |
Mutt/1.4i |
On Mon, Sep 09, 2002 at 01:19:57PM +0200, Jim Segrave wrote
> On Mon 09 Sep 2002 (11:10 +0100), Ian Shaw wrote:
> > Why is this type of position called an "optional redouble"? Surely the
> > redouble is automatic. I guess the 2-ply analysis is looking ahead and
> > automatically doubling on the next roll so it sees no loss of equity.
> >
> > GNU Backgammon Position ID: 2W4AAGdsbRMBGA
> > Match ID : AgGgAAAAEAAA
>
> Odd - using today's build with evaluation set to world-class++ for
> chequer and cube play I get the following evaluation:
>
> No redouble : +1.201
> Redouble, take : +1.347 (+0.146)
> Redouble, pass : +1.000 (-0.201)
>
> Correct cube action: Too good to redouble, pass
>
> Which, to my untrained eye looks far more reasonable.
O is on roll... 15% looks reasonable with 2 chequers on the bar. Did you
reverse the position to get X on roll?
Jørn
--
Joern Thyssen, PhD
Vendsysselgade 3, 3., DK-9000 Aalborg, Denmark
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