On 27 February 2012 19:09, Philippe Michel <[email protected]> wrote: > On Mon, 27 Feb 2012, Joseph Heled wrote: > >> clearing checkers from the back is not the same as bearoff - you *can* >> move any checker you want. > > > Embarrassing. You're right of course and in my example 3s and 4s can > certainly be played in a different way than in a bearoff.
An easy mistake to make. Still .... Using some python trickery it is possible to get the true backgammon figure. "true" here means that you always make the optimal move which minimises the probability of backgammon. The number is 40615026 / (36^5) = 0.6716982730973429 Now, nngnu gives those numbers for plies 0 to 5 0ply 0.6775242686271667 1 0.6775177717208862 2 0.6775177717208862 3 0.6775176525115967 4 0.6717002391815186 5 0.6716980934143066 which I am happy about, but it seems that *there is* some problem in gnubg, which gives different numbers for different plies. I think someone should take a good look at this! -Joseph _______________________________________________ Bug-gnubg mailing list [email protected] https://lists.gnu.org/mailman/listinfo/bug-gnubg
