• An excellent roll!

    From Timothy Chow@tchow12000@yahoo.com to rec.games.backgammon on Fri Jan 5 09:04:20 2024
    From Newsgroup: rec.games.backgammon

    XGID=-CBCBBA--a-----b--bbbBbca-:0:0:1:44:0:0:0:0:10

    Score is X:0 O:0. Unlimited Game
    +13-14-15-16-17-18------19-20-21-22-23-24-+
    | O O | | O O X O O O |
    | O O | | O O X O O |
    | | | O |
    | | | |
    | | | |
    | |BAR| |
    | | | |
    | | | |
    | | | X X |
    | | | X 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: 82 O: 85 X-O: 0-0
    Cube: 1
    X to play 44

    ---
    Tim Chow
    --- Synchronet 3.21b-Linux NewsLink 1.2
  • From Timothy Chow@tchow12000@yahoo.com to rec.games.backgammon on Mon Jan 8 09:14:41 2024
    From Newsgroup: rec.games.backgammon

    XGID=-CBCBBA--a-----b--bbbBbca-:0:0:1:44:0:0:0:0:10

    Score is X:0 O:0. Unlimited Game
    +13-14-15-16-17-18------19-20-21-22-23-24-+
    | O O | | O O X O O O |
    | O O | | O O X O O |
    | | | O |
    | | | |
    | | | |
    | |BAR| |
    | | | |
    | | | |
    | | | X X |
    | | | X 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: 82 O: 85 X-O: 0-0
    Cube: 1
    X to play 44

    I succumbed to the temptation to hit, but doing so gives O too much counterplay; it's not so easy to bring my remaining two checkers home
    safely. But see the variant below.

    1. Rollout-| 21/13(2) eq:+0.862
    Player: 74.18% (G:2.25% B:0.03%)
    Opponent: 25.82% (G:1.53% B:0.05%)
    Confidence: -#0.006 (+0.857..+0.868) - [100.0%]

    2. Rollout-| 21/9* 6/2 eq:+0.663 (-0.199)
    Player: 68.03% (G:6.73% B:0.03%)
    Opponent: 31.97% (G:3.06% B:0.08%)
    Confidence: -#0.004 (+0.659..+0.667) - [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=-CBCBBA-a------b--bbBbbca-:1:-1:1:44:0:0:0:0:10

    Score is X:0 O:0. Unlimited Game
    +13-14-15-16-17-18------19-20-21-22-23-24-+
    | O O | | O X O O O O | +---+
    | O O | | O X O O O | | 2 |
    | | | O | +---+
    | | | |
    | | | |
    | |BAR| |
    | | | |
    | | | |
    | | | X X |
    | | | X 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: 80 O: 84 X-O: 0-0
    Cube: 2, O own cube
    X to play 44

    1. Rollout-| 20/8* 6/2 eq:+0.537
    Player: 77.43% (G:7.71% B:0.08%)
    Opponent: 22.57% (G:2.00% B:0.05%)
    Confidence: -#0.004 (+0.533..+0.540) - [100.0%]

    2. Rollout-| 20/12(2) eq:+0.515 (-0.022)
    Player: 78.01% (G:2.31% B:0.02%)
    Opponent: 21.99% (G:0.75% B:0.02%)
    Confidence: -#0.003 (+0.511..+0.518) - [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