Re: [Bug-gnubg] gammon rate in bearoff situations

[Joseph Heled]

No magic involved here. getBearoffGammonProbs takes the position of the side 
wanting to bear one checker. (Since it is a bearoff, all other 19 points are 
know to be empty, so only 6 are needed). It return the probability of doing so 
in 1,2,3 or 4 moves, just like the one sided database does for complete bearoff.

Then you do exactly the same thing as in the bearoff computation - I save the 
gammon if I bear one checker in the next move, and if I don't and op can't bear 
all of his in his next move, I save by bearing one checker in 2 moves etc.

I do the same to calculate the backgammon in race. I treat it as a "bear out if 
opponent home" Vs. complete bearing off problem.

-Joseph

Øystein O Johansen wrote:
> Can you tell us how it works?
> What does getBearoffGammonProbs take as an argument? (a six element array,
> yes, but what is it?)
> What does it return? A probability of beeing gammoned?
>
> -Øystein