• It's gammon go

    From Timothy Chow@21:1/5 to All on Fri Jan 7 00:06:28 2022
    XGID=-ABCCaB-B--a-B-----bbbcbb-:0:0:1:62:0:1:1:2:10

    X:Player 1 O:Player 2
    Score is X:0 O:1 2 pt.(s) match.
    +13-14-15-16-17-18------19-20-21-22-23-24-+
    | X | | O O O O O O |
    | X | | O O O O O O |
    | | | O |
    | | | |
    | | | |
    | |BAR| |
    | | | |
    | | | |
    | | | X X |
    | X | | X X X X |
    | O X | | X O X X X X |
    +12-11-10--9--8--7-------6--5--4--3--2--1-+
    Pip count X: 80 O: 79 X-O: 0-1/2 Crawford
    Cube: 1
    X to play 62

    ---
    Tim Chow

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Timothy Chow@21:1/5 to All on Sat Jan 8 21:22:25 2022
    XGID=-ABCCaB-B--a-B-----bbbcbb-:0:0:1:62:0:1:1:2:10

    X:Player 1 O:Player 2
    Score is X:0 O:1 2 pt.(s) match.
    +13-14-15-16-17-18------19-20-21-22-23-24-+
    | X | | O O O O O O |
    | X | | O O O O O O |
    | | | O |
    | | | |
    | | | |
    | |BAR| |
    | | | |
    | | | |
    | | | X X |
    | X | | X X X X |
    | O X | | X O X X X X |
    +12-11-10--9--8--7-------6--5--4--3--2--1-+
    Pip count X: 80 O: 79 X-O: 0-1/2 Crawford
    Cube: 1
    X to play 62

    The score might tempt you to hit twice. It tempted me. But
    according to the rollout, hitting twice doesn't win that many
    more gammons and it sure loses a lot more games, by giving O
    a double shot from the bar (and even if O dances, X might not
    clean up both of his home-board blots). One return hit and
    it's all over.

    1. Rollout¹ 13/7 13/11* eq:+0.202
    Player: 49.97% (G:10.12% B:0.37%)
    Opponent: 50.03% (G:21.44% B:0.36%)
    Confidence: ±0.003 (+0.198..+0.205) - [100.0%]

    2. Rollout¹ 13/11* 11/5* eq:+0.101 (-0.101)
    Player: 42.80% (G:12.24% B:0.45%)
    Opponent: 57.20% (G:27.68% B:0.43%)
    Confidence: ±0.004 (+0.097..+0.104) - [0.0%]

    3. Rollout¹ 8/6 8/2 eq:+0.081 (-0.121)
    Player: 53.61% (G:0.42% B:0.01%)
    Opponent: 46.39% (G:0.92% B:0.01%)
    Confidence: ±0.002 (+0.079..+0.082) - [0.0%]

    4. Rollout¹ 13/11* 8/2 eq:+0.069 (-0.133)
    Player: 45.83% (G:7.61% B:0.23%)
    Opponent: 54.17% (G:27.73% B:1.98%)
    Confidence: ±0.003 (+0.066..+0.072) - [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, MET: Kazaross XG2

    ---
    Tim Chow

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Timothy Chow@21:1/5 to All on Sun Mar 19 09:56:50 2023
    XGID=--aB-BBBAA--cBb--cBbbb--A-:0:0:1:65:0:1:1:2:10

    Score is X:0 O:1 2 pt.(s) match.
    +13-14-15-16-17-18------19-20-21-22-23-24-+
    | X O O X | | O O O X |
    | X O O X | | O O O |
    | O | | |
    | | | |
    | | | |
    | |BAR| |
    | | | |
    | | | |
    | O | | |
    | O X | | X X X |
    | O X X X | | X X X O |
    +12-11-10--9--8--7-------6--5--4--3--2--1-+
    Pip count X: 145 O: 138 X-O: 0-1/2 Crawford
    Cube: 1
    X to play 65

    ---
    Tim Chow

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Timothy Chow@21:1/5 to All on Tue Mar 21 08:31:26 2023
    XGID=--aB-BBBAA--cBb--cBbbb--A-:0:0:1:65:0:1:1:2:10

    Score is X:0 O:1 2 pt.(s) match.
    +13-14-15-16-17-18------19-20-21-22-23-24-+
    | X O O X | | O O O X |
    | X O O X | | O O O |
    | O | | |
    | | | |
    | | | |
    | |BAR| |
    | | | |
    | | | |
    | O | | |
    | O X | | X X X |
    | O X X X | | X X X O |
    +12-11-10--9--8--7-------6--5--4--3--2--1-+
    Pip count X: 145 O: 138 X-O: 0-1/2 Crawford
    Cube: 1
    X to play 65

    Because of the score, I tried PoH, but XG says it doesn't win enough
    extra gammons.

    1. Rollout¹ 13/8 13/7 eq:+0.484
    Player: 56.37% (G:17.83% B:1.39%)
    Opponent: 43.63% (G:12.39% B:1.24%)
    Confidence: ±0.007 (+0.477..+0.491) - [100.0%]

    2. Rollout¹ 24/18 13/8 eq:+0.458 (-0.026)
    Player: 57.12% (G:15.77% B:0.82%)
    Opponent: 42.88% (G:13.00% B:1.04%)
    Confidence: ±0.007 (+0.451..+0.465) - [0.0%]

    3. Rollout¹ 8/2* 7/2 eq:+0.396 (-0.088)
    Player: 51.47% (G:18.32% B:0.55%)
    Opponent: 48.53% (G:11.45% B:0.94%)
    Confidence: ±0.007 (+0.389..+0.403) - [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, MET: Kazaross XG2

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

    XGID=--aB-BBCA---cBb--cBbbb--A-:0:0:1:65:0:1:1:2:10

    Score is X:0 O:1 2 pt.(s) match.
    +13-14-15-16-17-18------19-20-21-22-23-24-+
    | X O O X | | O O O X |
    | X O O X | | O O O |
    | O | | |
    | | | |
    | | | |
    | |BAR| |
    | | | |
    | | | |
    | O X | | |
    | O 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: 143 O: 138 X-O: 0-1/2 Crawford
    Cube: 1
    X to play 65

    1. Rollout¹ 8/2* 7/2 eq:+0.510
    Player: 55.37% (G:20.12% B:0.39%)
    Opponent: 44.63% (G:9.08% B:0.99%)
    Confidence: ±0.007 (+0.503..+0.517) - [100.0%]

    2. Rollout¹ 24/18 13/8 eq:+0.490 (-0.020)
    Player: 58.12% (G:16.39% B:1.25%)
    Opponent: 41.88% (G:11.24% B:0.62%)
    Confidence: ±0.007 (+0.483..+0.497) - [0.0%]

    3. Rollout¹ 13/8 13/7 eq:+0.446 (-0.064)
    Player: 55.65% (G:16.66% B:1.10%)
    Opponent: 44.35% (G:10.90% B:1.02%)
    Confidence: ±0.007 (+0.439..+0.453) - [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, MET: Kazaross XG2

    ---
    Tim Chow

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