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RE: [Bug-gnubg] Post-Crawford 2-away opening 41 for leader
From: |
Ian Shaw |
Subject: |
RE: [Bug-gnubg] Post-Crawford 2-away opening 41 for leader |
Date: |
Fri, 2 May 2003 15:36:46 +0100 |
> -----Original Message-----
> From: Nardy Pillards [mailto:address@hidden
>
> > GnuBg thinks that after an opening 41, Leader should use
> the free drop.
> > However, if I give Leader the cube on 2, GnuBg says that
> Leader is over
> 50% to win. If this is the case, then Leader should be taking.
> > My test does not change the depth of the search, so what is
> going on?
> >
> > GNU Backgammon Position ID: 4HPwATDgc/ABMA
> > Match ID : MAFGABAAAAAA
> > +-1--2--3--4--5--6-------7--8--9-10-11-12-+ O: Leader
> > | X O | | O X | 1 point
> > | X O | | O X | Rolled 41
> > | O | | O X |
> > | O | | X |
> > | O | | X |
> > | |BAR| |^ 2 point
> match (Cube: 1)
> > | X | | O |
> > | X | | O |
> > | X | | X O |
> > | O X | | X O |
> > | O X | | X O | 0 points
> > +24-23-22-21-20-19------18-17-16-15-14-13-+ X: Trailer
>
> Just a remark:
> This position shows a 2 point match, score 1-0.
> That has to be a Crawford game, no doubling possible.
> (I don't think this can be a 2-away post Crawford)
>
Setting Crawford changes the first letter of the match ID to "s" (see below),
so I'm sure I'd set it to post-Crawford. However, it would be more obvious if
the "(Cube: 1)" read "(Crawford game)", and under the "2 point match" to save
space.
GNU Backgammon Position ID: 4HPwATDgc/ABMA
Match ID : sAFGABAAAAAA
+-1--2--3--4--5--6-------7--8--9-10-11-12-+ O: Leader
| X O | | O X | 1 point
| X O | | O X | Rolled 41
| O | | O X |
| O | | X |
| O | | X |
| |BAR| |^ 2 point match (Cube: 1)
| X | | O |
| X | | O |
| X | | X O |
| O X | | X O |
| O X | | X O | 0 points
+24-23-22-21-20-19------18-17-16-15-14-13-+ X: Trailer
--Ian