• 55 from the bar

    From Timothy Chow@21:1/5 to All on Sat Jun 11 08:47:00 2022
    XGID=----b-CBD---bC-B-d-c-b--bA:0:0:1:55:0:0:0:0:10

    X:Player 2 O:Player 1
    Score is X:0 O:0. Unlimited Game
    +13-14-15-16-17-18------19-20-21-22-23-24-+
    | X X O | | O O O |
    | X X O | | O O O |
    | X O | | O |
    | O | | |
    | | X | |
    | |BAR| |
    | | | |
    | X | | |
    | X | | X |
    | O X X | | X O |
    | O X X | | X O |
    +12-11-10--9--8--7-------6--5--4--3--2--1-+
    Pip count X: 158 O: 128 X-O: 0-0
    Cube: 1
    X to play 55

    ---
    Tim Chow

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From atilamalcok@gmail.com@21:1/5 to All on Mon Jun 13 07:23:25 2022
    11 Haziran 2022 Cumartesi tarihinde saat 15:47:02 UTC+3 itibarıyla Tim Chow şunları yazdı:
    XGID=----b-CBD---bC-B-d-c-b--bA:0:0:1:55:0:0:0:0:10

    X:Player 2 O:Player 1
    Score is X:0 O:0. Unlimited Game
    +13-14-15-16-17-18------19-20-21-22-23-24-+
    | X X O | | O O O |
    | X X O | | O O O |
    | X O | | O |
    | O | | |
    | | X | |
    | |BAR| |
    | | | |
    | X | | |
    | X | | X |
    | O X X | | X O |
    | O X X | | X O |
    +12-11-10--9--8--7-------6--5--4--3--2--1-+
    Pip count X: 158 O: 128 X-O: 0-0
    Cube: 1
    X to play 55

    ---
    Tim Chow
    There are two important things that stand out at first here.
    The first is that X is quite behind in the race - which will continue to be behind even after playing 5-5. The second is that he has a homeboard that is more inclined to attack. But the first is a much more dominant element. That's why bar/10, 15/10
    would be my first choice. At least it's blocking O's direct exit.
    I do not think that the blot left on the 15 point is very risky. Attacking against a single man will not be very effective.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Timothy Chow@21:1/5 to All on Mon Jun 13 22:47:02 2022
    XGID=----b-CBD---bC-B-d-c-b--bA:0:0:1:55:0:0:0:0:10

    X:Player 2 O:Player 1
    Score is X:0 O:0. Unlimited Game
    +13-14-15-16-17-18------19-20-21-22-23-24-+
    | X X O | | O O O |
    | X X O | | O O O |
    | X O | | O |
    | O | | |
    | | X | |
    | |BAR| |
    | | | |
    | X | | |
    | X | | X |
    | O X X | | X O |
    | O X X | | X O |
    +12-11-10--9--8--7-------6--5--4--3--2--1-+
    Pip count X: 158 O: 128 X-O: 0-0
    Cube: 1
    X to play 55

    XG 3-ply plays bar/15 8/3(2) here but the rollout puts that play in
    whopper territory. Usually when one is behind in the pip count, one
    tries to stay back for more contact. However, leaving the straggler
    on the 20pt leaves it vulnerable to attack. And once X plays bar/15,
    his best strategy is to prime O's back checkers. It's not easy to
    prime an advanced anchor, but it's X's best game plan here.

    1. Rollout¹ Bar/10 15/10 eq:+0.120
    Player: 54.02% (G:6.32% B:0.27%)
    Opponent: 45.98% (G:11.71% B:0.12%)
    Confidence: ±0.008 (+0.112..+0.127) - [100.0%]

    2. Rollout¹ Bar/15 8/3(2) eq:+0.023 (-0.097)
    Player: 49.17% (G:5.61% B:0.22%)
    Opponent: 50.83% (G:7.69% B:0.10%)
    Confidence: ±0.005 (+0.017..+0.028) - [0.0%]

    3. Rollout¹ Bar/15 13/3 eq:+0.015 (-0.105)
    Player: 49.02% (G:5.83% B:0.23%)
    Opponent: 50.98% (G:7.97% B:0.12%)
    Confidence: ±0.005 (+0.010..+0.020) - [0.0%]

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

    eXtreme Gammon Version: 2.19.207.pre-release

    ---
    Tim Chow

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