• Double 6's

    From Timothy Chow@21:1/5 to All on Wed Feb 28 08:59:32 2024
    XGID=-aB--AD-BB-a----bc-dC-dA--:0:0:1:66:0:0:0:0:10

    Score is X:0 O:0. Unlimited Game
    +13-14-15-16-17-18------19-20-21-22-23-24-+
    | O O | | O X O X |
    | O O | | O X O |
    | O | | O X O |
    | | | O O |
    | | | |
    | |BAR| |
    | | | |
    | | | X |
    | | | X |
    | X X | | X X |
    | O X X | | X X X O |
    +12-11-10--9--8--7-------6--5--4--3--2--1-+
    Pip count X: 150 O: 116 X-O: 0-0
    Cube: 1
    X to play 66

    ---
    Tim Chow

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Timothy Chow@21:1/5 to All on Sun Mar 3 18:21:56 2024
    XGID=-aB--AD-BB-a----bc-dC-dA--:0:0:1:66:0:0:0:0:10

    Score is X:0 O:0. Unlimited Game
    +13-14-15-16-17-18------19-20-21-22-23-24-+
    | O O | | O X O X |
    | O O | | O X O |
    | O | | O X O |
    | | | O O |
    | | | |
    | |BAR| |
    | | | |
    | | | X |
    | | | X |
    | X X | | X X |
    | O X X | | X X X O |
    +12-11-10--9--8--7-------6--5--4--3--2--1-+
    Pip count X: 150 O: 116 X-O: 0-0
    Cube: 1
    X to play 66

    X is still behind in the race after this roll, so I thought I should
    keep the anchor with 20/8 9/3(2). But XG says we should abandon the
    anchor with 20/14(2) 20/8. In part, I think that this is because
    doing so puts some pressure on O's outfield blot; see the variant.

    1. Rollout¹ 20/14(2) 20/8 eq:-0.312
    Player: 42.59% (G:8.95% B:0.34%)
    Opponent: 57.41% (G:16.85% B:0.56%)
    Confidence: ±0.013 (-0.325..-0.299) - [100.0%]

    2. Rollout¹ 20/14(2) 9/3(2) eq:-0.371 (-0.059)
    Player: 41.28% (G:11.00% B:0.61%)
    Opponent: 58.72% (G:20.83% B:1.11%)
    Confidence: ±0.011 (-0.382..-0.360) - [0.0%]

    3. Rollout¹ 20/8 9/3(2) eq:-0.429 (-0.117)
    Player: 38.21% (G:8.32% B:0.22%)
    Opponent: 61.79% (G:11.04% B:0.40%)
    Confidence: ±0.012 (-0.441..-0.417) - [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=-bB--AD-BB------bc-dC-dA--:0:0:1:66:0:0:0:0:10

    Score is X:0 O:0. Unlimited Game
    +13-14-15-16-17-18------19-20-21-22-23-24-+
    | O O | | O X O X |
    | O O | | O X O |
    | O | | O X O |
    | | | O O |
    | | | |
    | |BAR| |
    | | | |
    | | | X |
    | | | X |
    | X X | | X X O |
    | X X | | X X X O |
    +12-11-10--9--8--7-------6--5--4--3--2--1-+
    Pip count X: 150 O: 126 X-O: 0-0
    Cube: 1
    X to play 66

    1. Rollout¹ 20/14(2) 20/8 eq:+0.024
    Player: 51.31% (G:14.58% B:0.68%)
    Opponent: 48.69% (G:15.99% B:0.51%)
    Confidence: ±0.007 (+0.017..+0.031) - [99.8%]

    2. Rollout¹ 20/8 9/3(2) eq:+0.011 (-0.013)
    Player: 49.37% (G:15.02% B:0.56%)
    Opponent: 50.63% (G:10.96% B:0.40%)
    Confidence: ±0.006 (+0.005..+0.017) - [0.2%]

    3. Rollout² 20/14(2) 9/3(2) eq:-0.079 (-0.104)
    Player: 49.13% (G:16.95% B:1.04%)
    Opponent: 50.87% (G:20.20% B:1.06%)
    Confidence: ±0.015 (-0.094..-0.065) - [0.0%]

    ¹ 5184 Games rolled with Variance Reduction.
    Dice Seed: 271828
    Moves: 3-ply, cube decisions: XG Roller

    ² 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)