• Can't really Pottle this time

    From Timothy Chow@21:1/5 to All on Mon Mar 7 08:44:55 2022
    XGID=---C-BCbC---bBa-Abbcc---A-:0:0:1:61:0:0:0:0:10

    X:Player 1 O:Player 2
    Score is X:0 O:0. Unlimited Game
    +13-14-15-16-17-18------19-20-21-22-23-24-+
    | X O X O O | | O O X |
    | X O O | | O O |
    | | | O O |
    | | | |
    | | | |
    | |BAR| |
    | | | |
    | | | |
    | X | | X X |
    | O X O | | X X X |
    | O X O | | X X X |
    +12-11-10--9--8--7-------6--5--4--3--2--1-+
    Pip count X: 127 O: 136 X-O: 0-0
    Cube: 1
    X to play 61

    ---
    Tim Chow

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Timothy Chow@21:1/5 to All on Wed Mar 9 22:20:12 2022
    XGID=---C-BCbC---bBa-Abbcc---A-:0:0:1:61:0:0:0:0:10

    X:Player 1 O:Player 2
    Score is X:0 O:0. Unlimited Game
    +13-14-15-16-17-18------19-20-21-22-23-24-+
    | X O X O O | | O O X |
    | X O O | | O O |
    | | | O O |
    | | | |
    | | | |
    | |BAR| |
    | | | |
    | | | |
    | X | | X X |
    | O X O | | X X X |
    | O X O | | X X X |
    +12-11-10--9--8--7-------6--5--4--3--2--1-+
    Pip count X: 127 O: 136 X-O: 0-0
    Cube: 1
    X to play 61

    Moving the blot on the 16pt to reduce shots seemed "obvious" to me, but
    it actually gives O free rein to improve her position on her side of the
    board. If X makes his 2pt then he has a strong board that provides some protection against being attacked. But see the variant below as well,
    where O's midpoint is not stripped and she has fewer ways to make the
    front of her prime.

    1. Rollout¹ 8/2 3/2 eq:-0.548
    Player: 35.04% (G:10.88% B:0.35%)
    Opponent: 64.96% (G:16.53% B:0.67%)
    Confidence: ±0.011 (-0.559..-0.537) - [100.0%]

    2. Rollout¹ 16/9 eq:-0.636 (-0.089)
    Player: 32.60% (G:8.51% B:0.27%)
    Opponent: 67.40% (G:13.32% B:0.49%)
    Confidence: ±0.012 (-0.649..-0.624) - [0.0%]

    3. Rollout¹ 24/23 16/10 eq:-0.650 (-0.102)
    Player: 32.51% (G:8.51% B:0.28%)
    Opponent: 67.49% (G:13.78% B:0.54%)
    Confidence: ±0.012 (-0.662..-0.637) - [0.0%]

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

    eXtreme Gammon Version: 2.19.207.pre-release

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

    XGID=---C-BCbC---cBa-Abbcb---A-:0:0:1:61:0:0:0:0:10

    X:Player 1 O:Player 2
    Score is X:0 O:0. Unlimited Game
    +13-14-15-16-17-18------19-20-21-22-23-24-+
    | X O X O O | | O O X |
    | X O O | | O O |
    | | | O |
    | | | |
    | | | |
    | |BAR| |
    | | | |
    | | | |
    | O X | | X X |
    | O X O | | X X X |
    | O X O | | X X X |
    +12-11-10--9--8--7-------6--5--4--3--2--1-+
    Pip count X: 127 O: 144 X-O: 0-0
    Cube: 1
    X to play 61

    1. Rollout¹ 16/9 eq:-0.508
    Player: 35.76% (G:10.48% B:0.29%)
    Opponent: 64.24% (G:12.56% B:0.46%)
    Confidence: ±0.012 (-0.520..-0.495) - [99.9%]

    2. Rollout¹ 16/10 3/2 eq:-0.535 (-0.028)
    Player: 35.26% (G:11.11% B:0.33%)
    Opponent: 64.74% (G:13.68% B:0.58%)
    Confidence: ±0.013 (-0.548..-0.522) - [0.1%]

    3. Rollout¹ 16/10 6/5 eq:-0.543 (-0.036)
    Player: 34.98% (G:10.29% B:0.30%)
    Opponent: 65.02% (G:13.04% B:0.50%)
    Confidence: ±0.013 (-0.556..-0.531) - [0.0%]

    4. Rollout¹ 24/23 16/10 eq:-0.554 (-0.046)
    Player: 34.72% (G:10.23% B:0.30%)
    Opponent: 65.28% (G:12.37% B:0.51%)
    Confidence: ±0.013 (-0.567..-0.540) - [0.0%]

    5. Rollout¹ 8/2 3/2 eq:-0.563 (-0.055)
    Player: 35.23% (G:10.17% B:0.24%)
    Opponent: 64.77% (G:15.62% B:0.60%)
    Confidence: ±0.011 (-0.574..-0.551) - [0.0%]

    ¹ 1296 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)