Il 12 giugno 2026 alle 17:24 Louis Zulli ha scritto:
>    1. Cubeful 4-ply    13/11 10/6                   Eq.: -1.709
>        0.179 0.014 0.000 - 0.821 0.630 0.000
>         4-ply cubeful prune [4ply]
>     2. Cubeful 4-ply    13/7                         Eq.: -1.709 (-0.000)
>        0.189 0.015 0.000 - 0.811 0.637 0.000
>         4-ply cubeful prune [4ply]
>     3. Cubeful 4-ply    12/8 10/8                    Eq.: -1.711 (-0.002)
>        0.191 0.014 0.000 - 0.809 0.644 0.000
>         4-ply cubeful prune [4ply]
>     4. Cubeful 4-ply    13/9 10/8                    Eq.: -1.719 (-0.010)
>        0.185 0.014 0.000 - 0.815 0.641 0.000
>         4-ply cubeful prune [4ply]
> 
> GNU Backgammon 1.06.002 Jan 29 2022 --- looks like I need to upgrade.

Not so fast :P
4-ply evaluation on 1.08.003 20251217 gives similar result to yours.

    1. Cubeful 4-ply    13/11 10/6                   Eq.: -1.708
        17.9   1.4   0.0 -  82.1  63.0   0.0
        4-ply cubeful prune [4ply]
    2. Cubeful 4-ply    13/7                         Eq.: -1.709 (-0.000)
        18.9   1.5   0.0 -  81.1  63.8   0.0
        4-ply cubeful prune [4ply]
    3. Cubeful 4-ply    12/6                         Eq.: -1.710 (-0.002)
        18.1   1.4   0.0 -  81.9  63.3   0.0
        4-ply cubeful prune [4ply]
    4. Cubeful 4-ply    12/8 10/8                    Eq.: -1.711 (-0.002)
        19.1   1.4   0.0 -  80.9  64.4   0.0
        4-ply cubeful prune [4ply]

I ran mine on 2-ply because that is what is default on GNUbg.  3-ply
comes up with fine results too.

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