• When behind in the race, double

    From Axel Reichert@21:1/5 to All on Thu Feb 9 07:44:40 2023
    GNU Backgammon Position ID: 9x2ABwDabgIwAw
    Match ID : cAlgAZAAIAAE
    +24-23-22-21-20-19------18-17-16-15-14-13-+ O: gnubg
    | O O O X | | X | 9 points
    | O O O X | | X |
    | O O O | | |
    | O | | |
    | O | | |
    | |BAR| |v 11 point match (Cube: 1)
    | | | |
    | | | O |
    | X | | O |
    | X X X X | | O | On roll
    | X X X X X | | X O | 4 points
    +-1--2--3--4--5--6-------7--8--9-10-11-12-+ X: axel
    Pip counts: O 74, X 127

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Axel Reichert@21:1/5 to Axel Reichert on Wed Feb 15 09:02:47 2023
    Axel Reichert <mail@axel-reichert.de> writes:

    GNU Backgammon Position ID: 9x2ABwDabgIwAw
    Match ID : cAlgAZAAIAAE
    +24-23-22-21-20-19------18-17-16-15-14-13-+ O: gnubg
    | O O O X | | X | 9 points
    | O O O X | | X |
    | O O O | | |
    | O | | |
    | O | | |
    | |BAR| |v 11 point match (Cube: 1)
    | | | |
    | | | O |
    | X | | O |
    | X X X X | | O | On roll
    | X X X X X | | X O | 4 points
    +-1--2--3--4--5--6-------7--8--9-10-11-12-+ X: axel
    Pip counts: O 74, X 127

    Rollout cubeless equity +0.475 (Money: +0.460)

    Cubeful equities:
    1. Double, pass +1.000
    2. Double, take +1.012 (+0.012)
    3. No double +0.783 (-0.217)
    Proper cube action: Double, pass

    Rollout details:
    Centered 1-cube:
    0.649 0.209 0.005 - 0.351 0.053 0.000 CL +0.475 CF +0.783
    [0.001 0.001 0.000 - 0.001 0.001 0.000 CL 0.004 CF 0.006]
    Player gnubg owns 2-cube:
    0.653 0.222 0.007 - 0.347 0.052 0.000 CL +1.012 CF +1.012
    [0.002 0.001 0.000 - 0.002 0.001 0.000 CL 0.010 CF 0.010]
    Truncated cubeful rollout (depth 6) with variance reduction
    630 games, Mersenne Twister dice gen. with seed 449002682 and quasi-random dice Stop when std.errs. are small enough: limit 0.0100 (min. 36 games)
    Play: world class 2-ply cubeful prune [world class]
    keep the first 0 0-ply moves and up to 8 more moves within equity 0.16
    Skip pruning for 1-ply moves.
    Cube: 2-ply cubeful prune [world class]
    Different evaluations after 2 plies:
    Play: 1-ply cubeful
    keep the first 0 0-ply moves and up to 8 more moves within equity 0.16
    Cube: 2-ply cubeful prune [world class]

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)