• It's a blitz!

    From Timothy Chow@21:1/5 to All on Wed Jan 10 22:14:55 2024
    XGID=bBB-C-BA-A--cA-b-c-cbB--A-:1:-1:1:51:0:0:0:0:10

    Score is X:0 O:0. Unlimited Game
    +13-14-15-16-17-18------19-20-21-22-23-24-+
    | X O O | | O O X X | +---+
    | O O | | O O X | | 2 |
    | O | | O | +---+
    | | | |
    | | | |
    | |BAR| |
    | | O | |
    | | O | |
    | O | | X |
    | O | | X X X X |
    | O X X | | X X X X |
    +12-11-10--9--8--7-------6--5--4--3--2--1-+
    Pip count X: 125 O: 161 X-O: 0-0
    Cube: 2, O own cube
    X to play 51

    ---
    Tim Chow

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Timothy Chow@21:1/5 to All on Tue Jan 16 08:42:42 2024
    XGID=bBB-C-BA-A--cA-b-c-cbB--A-:1:-1:1:51:0:0:0:0:10

    Score is X:0 O:0. Unlimited Game
    +13-14-15-16-17-18------19-20-21-22-23-24-+
    | X O O | | O O X X | +---+
    | O O | | O O X | | 2 |
    | O | | O | +---+
    | | | |
    | | | |
    | |BAR| |
    | | O | |
    | | O | |
    | O | | X |
    | O | | X X X X |
    | O X X | | X X X X |
    +12-11-10--9--8--7-------6--5--4--3--2--1-+
    Pip count X: 125 O: 161 X-O: 0-0
    Cube: 2, O own cube
    X to play 51

    The normal approach in a blitz is to keep bringing down more ammunition
    to try to complete the closeout. But if you have several builders
    already and your back checkers are somewhat hemmed in, then at some
    point you need to start freeing those checkers, lest you roll something
    awkward and are forced to collapse.

    If X's checkers on his 21pt were split then jumping out would not be so
    urgent (see variant below).

    1. Rollout¹ 21/16 7/6 eq:+0.636
    Player: 67.33% (G:50.93% B:0.30%)
    Opponent: 32.67% (G:7.89% B:0.50%)
    Confidence: ±0.010 (+0.626..+0.646) - [100.0%]

    2. Rollout¹ 21/16 9/8 eq:+0.594 (-0.042)
    Player: 66.03% (G:50.15% B:0.29%)
    Opponent: 33.97% (G:8.98% B:0.62%)
    Confidence: ±0.012 (+0.582..+0.606) - [0.0%]

    3. Rollout¹ 24/23 21/16 eq:+0.572 (-0.064)
    Player: 65.83% (G:49.46% B:0.30%)
    Opponent: 34.17% (G:9.07% B:0.62%)
    Confidence: ±0.011 (+0.562..+0.583) - [0.0%]

    4. Rollout¹ 21/16 4/3 eq:+0.532 (-0.104)
    Player: 64.58% (G:49.47% B:0.31%)
    Opponent: 35.42% (G:10.90% B:0.95%)
    Confidence: ±0.011 (+0.521..+0.543) - [0.0%]

    5. Rollout¹ 24/18 eq:+0.518 (-0.118)
    Player: 64.64% (G:46.38% B:0.29%)
    Opponent: 35.36% (G:9.04% B:0.52%)
    Confidence: ±0.010 (+0.509..+0.528) - [0.0%]

    6. Rollout¹ 13/8 7/6 eq:+0.474 (-0.162)
    Player: 63.14% (G:46.22% B:0.28%)
    Opponent: 36.86% (G:8.78% B:0.46%)
    Confidence: ±0.012 (+0.462..+0.487) - [0.0%]

    7. Rollout¹ 13/8 4/3 eq:+0.466 (-0.171)
    Player: 62.69% (G:46.75% B:0.22%)
    Opponent: 37.31% (G:10.02% B:0.52%)
    Confidence: ±0.011 (+0.454..+0.477) - [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=bBB-C-BA-A--cA-b-c-cbAA-A-:1:-1:1:51:0:0:0:0:10

    Score is X:0 O:0. Unlimited Game
    +13-14-15-16-17-18------19-20-21-22-23-24-+
    | X O O | | O O X X X | +---+
    | O O | | O O | | 2 |
    | O | | O | +---+
    | | | |
    | | | |
    | |BAR| |
    | | O | |
    | | O | |
    | O | | X |
    | O | | X X X X |
    | O X X | | X X X X |
    +12-11-10--9--8--7-------6--5--4--3--2--1-+
    Pip count X: 126 O: 161 X-O: 0-0
    Cube: 2, O own cube
    X to play 51

    1. Rollout¹ 21/16 7/6 eq:+0.624
    Player: 66.84% (G:51.67% B:0.29%)
    Opponent: 33.16% (G:8.86% B:0.63%)
    Confidence: ±0.010 (+0.615..+0.634) - [90.8%]

    2. Rollout¹ 21/16 9/8 eq:+0.612 (-0.012)
    Player: 66.47% (G:51.28% B:0.28%)
    Opponent: 33.53% (G:9.51% B:0.75%)
    Confidence: ±0.009 (+0.604..+0.621) - [2.5%]

    3. Rollout¹ 24/23 21/16 eq:+0.612 (-0.013)
    Player: 66.62% (G:51.71% B:0.30%)
    Opponent: 33.38% (G:9.55% B:0.84%)
    Confidence: ±0.010 (+0.602..+0.622) - [2.8%]

    4. Rollout¹ 22/16 eq:+0.610 (-0.014)
    Player: 66.54% (G:50.78% B:0.30%)
    Opponent: 33.46% (G:8.62% B:0.60%)
    Confidence: ±0.010 (+0.600..+0.621) - [2.1%]

    5. Rollout¹ 13/8 7/6 eq:+0.610 (-0.015)
    Player: 66.38% (G:51.16% B:0.30%)
    Opponent: 33.62% (G:8.49% B:0.50%)
    Confidence: ±0.011 (+0.599..+0.621) - [1.8%]

    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

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