• Hit or not?

    From Timothy Chow@tchow12000@yahoo.com to rec.games.backgammon on Sat Feb 3 18:11:03 2024
    From Newsgroup: rec.games.backgammon

    XGID=-bBBaBBB-B--cB---A-bbc--b-:1:-1:1:63:0:0:0:0:10

    Score is X:0 O:0. Unlimited Game
    +13-14-15-16-17-18------19-20-21-22-23-24-+
    | X X | | O O O O | +---+
    | X | | O O O O | | 2 |
    | | | O | +---+
    | | | |
    | | | |
    | |BAR| |
    | | | |
    | | | |
    | O | | |
    | O X X | | X X X X O |
    | O X X | | X X O X X O |
    +12-11-10--9--8--7-------6--5--4--3--2--1-+
    Pip count X: 107 O: 144 X-O: 0-0
    Cube: 2, O own cube
    X to play 63

    ---
    Tim Chow
    --- Synchronet 3.21b-Linux NewsLink 1.2
  • From Timothy Chow@tchow12000@yahoo.com to rec.games.backgammon on Tue Feb 6 09:38:34 2024
    From Newsgroup: rec.games.backgammon

    XGID=-bBBaBBB-B--cB---A-bbc--b-:1:-1:1:63:0:0:0:0:10

    Score is X:0 O:0. Unlimited Game
    +13-14-15-16-17-18------19-20-21-22-23-24-+
    | X X | | O O O O | +---+
    | X | | O O O O | | 2 |
    | | | O | +---+
    | | | |
    | | | |
    | |BAR| |
    | | | |
    | | | |
    | O | | |
    | O X X | | X X X X O |
    | O X X | | X X O X X O |
    +12-11-10--9--8--7-------6--5--4--3--2--1-+
    Pip count X: 107 O: 144 X-O: 0-0
    Cube: 2, O own cube
    X to play 63

    I tried hitting here, but XG hates my play. If O's board weren't so
    strong it might be a different story (see variant).

    1. Rollout-| 17/8 eq:+0.634
    Player: 76.64% (G:21.31% B:1.61%)
    Opponent: 23.36% (G:4.30% B:0.09%)
    Confidence: -#0.007 (+0.627..+0.642) - [100.0%]

    2. Rollout-| 13/4* eq:+0.523 (-0.112)
    Player: 71.02% (G:28.78% B:2.92%)
    Opponent: 28.98% (G:9.59% B:0.37%)
    Confidence: -#0.009 (+0.514..+0.531) - [0.0%]

    3. Rollout-| 17/11 9/6 eq:+0.513 (-0.122)
    Player: 73.12% (G:20.83% B:1.58%)
    Opponent: 26.88% (G:7.08% B:0.15%)
    Confidence: -#0.007 (+0.505..+0.520) - [0.0%]

    -| 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=-bBBaBBB-B--cB---Abbba--b-:1:-1:1:63:0:0:0:0:10

    Score is X:0 O:0. Unlimited Game
    +13-14-15-16-17-18------19-20-21-22-23-24-+
    | X X O | | O O O O | +---+
    | X O | | O O O | | 2 |
    | | | | +---+
    | | | |
    | | | |
    | |BAR| |
    | | | |
    | | | |
    | O | | |
    | O X X | | X X X X O |
    | O X X | | X X O X X O |
    +12-11-10--9--8--7-------6--5--4--3--2--1-+
    Pip count X: 107 O: 150 X-O: 0-0
    Cube: 2, O own cube
    X to play 63

    1. Rollout-| 13/4* eq:+0.761
    Player: 75.58% (G:35.75% B:4.72%)
    Opponent: 24.42% (G:5.99% B:0.23%)
    Confidence: -#0.010 (+0.751..+0.771) - [99.9%]

    2. Rollout-| 17/8 eq:+0.741 (-0.019)
    Player: 79.15% (G:24.55% B:2.27%)
    Opponent: 20.85% (G:3.05% B:0.10%)
    Confidence: -#0.007 (+0.735..+0.748) - [0.1%]

    3. Rollout-| 17/11 7/4* eq:+0.734 (-0.027)
    Player: 74.75% (G:36.02% B:4.71%)
    Opponent: 25.25% (G:6.63% B:0.30%)
    Confidence: -#0.008 (+0.726..+0.743) - [0.0%]

    -| 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
    --- Synchronet 3.21b-Linux NewsLink 1.2