• Hit a blot, any blot

    From Timothy Chow@21:1/5 to All on Sat Apr 22 11:11:56 2023
    XGID=----aADaB--AeD---c-eA---B-:0:0:1:21:0:0:0:0:10

    Score is X:0 O:0. Unlimited Game
    +13-14-15-16-17-18------19-20-21-22-23-24-+
    | X O | | O X X |
    | X O | | O X |
    | X O | | O |
    | X | | O |
    | | | O |
    | |BAR| |
    | O | | |
    | O | | X |
    | O | | X |
    | O X | | X |
    | O X X O | | X X O |
    +12-11-10--9--8--7-------6--5--4--3--2--1-+
    Pip count X: 176 O: 158 X-O: 0-0
    Cube: 1
    X to play 21

    ---
    Tim Chow

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Timothy Chow@21:1/5 to All on Tue Apr 25 09:12:30 2023
    XGID=----aADaB--AeD---c-eA---B-:0:0:1:21:0:0:0:0:10

    Score is X:0 O:0. Unlimited Game
    +13-14-15-16-17-18------19-20-21-22-23-24-+
    | X O | | O X X |
    | X O | | O X |
    | X O | | O |
    | X | | O |
    | | | O |
    | |BAR| |
    | O | | |
    | O | | X |
    | O | | X |
    | O X | | X |
    | O X X O | | X X O |
    +12-11-10--9--8--7-------6--5--4--3--2--1-+
    Pip count X: 176 O: 158 X-O: 0-0
    Cube: 1
    X to play 21

    8/7*/5 breaks the 8pt, which has value in this position, so the main
    choice is between 6/4* 5/4 and 6/5 6/4*. In the first few rolls of
    the game, 6/4* 5/4 usually comes out ahead of 6/5 6/4*, but the choice
    can be a subtle one (see variant for example).

    1. Rollout¹ 6/4* 5/4 eq:+0.154
    Player: 52.94% (G:17.49% B:0.76%)
    Opponent: 47.06% (G:12.44% B:0.74%)
    Confidence: ±0.016 (+0.137..+0.170) - [100.0%]

    2. Rollout¹ 6/5 6/4* eq:+0.105 (-0.048)
    Player: 52.66% (G:16.49% B:0.69%)
    Opponent: 47.34% (G:13.85% B:0.98%)
    Confidence: ±0.017 (+0.088..+0.123) - [0.0%]

    3. Rollout¹ 8/7* 7/5 eq:+0.064 (-0.090)
    Player: 51.23% (G:15.27% B:0.59%)
    Opponent: 48.77% (G:13.18% B:0.80%)
    Confidence: ±0.018 (+0.046..+0.082) - [0.0%]

    4. Rollout¹ 13/11 6/5 eq:+0.024 (-0.130)
    Player: 50.03% (G:15.02% B:0.58%)
    Opponent: 49.97% (G:12.76% B:0.71%)
    Confidence: ±0.015 (+0.009..+0.039) - [0.0%]

    ¹ 1296 Games rolled with Variance Reduction.
    Dice Seed: 271828
    Moves: 3-ply, cube decisions: XG Roller

    eXtreme Gammon Version: 2.19.211.pre-release

    -------
    Variant
    -------

    XGID=----aAEaB--AeC---c-eA---B-:0:0:1:21:0:0:0:0:10

    Score is X:0 O:0. Unlimited Game
    +13-14-15-16-17-18------19-20-21-22-23-24-+
    | X O | | O X X |
    | X O | | O X |
    | X O | | O |
    | | | O |
    | | | O |
    | |BAR| |
    | O | | X |
    | O | | X |
    | O | | X |
    | O X | | X |
    | O X X O | | X X O |
    +12-11-10--9--8--7-------6--5--4--3--2--1-+
    Pip count X: 169 O: 158 X-O: 0-0
    Cube: 1
    X to play 21

    1. Rollout¹ 6/5 6/4* eq:+0.216
    Player: 54.15% (G:19.28% B:0.79%)
    Opponent: 45.85% (G:12.47% B:0.92%)
    Confidence: ±0.016 (+0.200..+0.232) - [61.8%]

    2. Rollout¹ 6/4* 5/4 eq:+0.212 (-0.004)
    Player: 53.73% (G:19.65% B:0.66%)
    Opponent: 46.27% (G:11.68% B:0.71%)
    Confidence: ±0.017 (+0.195..+0.229) - [38.2%]

    ¹ 1296 Games rolled with Variance Reduction.
    Dice Seed: 271828
    Moves: 3-ply, cube decisions: XG Roller

    eXtreme Gammon Version: 2.19.211.pre-release

    ---
    Tim Chow

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