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RE: [Bug-gnubg] 1-chequer hypergammon
From: |
Ian Shaw |
Subject: |
RE: [Bug-gnubg] 1-chequer hypergammon |
Date: |
Thu, 10 Apr 2003 18:00:45 +0100 |
> -----Original Message-----
> From: Ned Cross
>
> That either side has a nonzero probability of winning
> backgammon is simply
> wrong, since contact is broken and both sides have cleared
> the enemy home
> board. Removing the BG probabilities should slightly alter
> the equities.
>
>
There is still contact. X is at the bottom and heading left.
I don't think it's clear from the diagram that it was O who doubled.
>
> GNU Backgammon Position ID: AAIAAAAIAAAAAA
> Match ID : MBkAAIAAKAAA
> +-1--2--3--4--5--6-------7--8--9-10-11-12-+ O: Leader
> | | | | 8 points
> | | | |
> | | | |
> | | | |
> | | | |
> | |BAR| |^
> | | | |
> | | | |
> | | | |
> | | | | Cube offered at 2
> | | | O X | 5 points
> +24-23-22-21-20-19------18-17-16-15-14-13-+ X: Trailer
>
>
> Cube analysis
> 2-ply cubeless equity +0.025
> 0.498 0.498 0.038 - 0.502 0.502 0.006
> Cubeful equities:
> 1. Double, take -0.035
> 2. Double, pass +1.000 ( +1.035)
> 3. No double -0.049 ( -0.014)
> Proper cube action: Double, beaver
>