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  • Double 1's

    From Timothy Chow@tchow12000@yahoo.com to rec.games.backgammon on Sat Feb 17 16:49:09 2024
    From Newsgroup: rec.games.backgammon

    XGID=-aB---D-B--AeD---c-ea--AA-:0:0:1:11:0:0:0:0:10

    Score is X:0 O:0. Unlimited Game
    +13-14-15-16-17-18------19-20-21-22-23-24-+
    | X O | | O O X X |
    | X O | | O |
    | X O | | O |
    | X | | O |
    | | | O |
    | |BAR| |
    | O | | |
    | O | | X |
    | O | | X |
    | O X | | X X |
    | O X X | | X X O |
    +12-11-10--9--8--7-------6--5--4--3--2--1-+
    Pip count X: 154 O: 148 X-O: 0-0
    Cube: 1
    X to play 11

    ---
    Tim Chow
    --- Synchronet 3.21b-Linux NewsLink 1.2
  • From Timothy Chow@tchow12000@yahoo.com to rec.games.backgammon on Tue Feb 20 09:14:33 2024
    From Newsgroup: rec.games.backgammon

    XGID=-aB---D-B--AeD---c-ea--AA-:0:0:1:11:0:0:0:0:10

    Score is X:0 O:0. Unlimited Game
    +13-14-15-16-17-18------19-20-21-22-23-24-+
    | X O | | O O X X |
    | X O | | O |
    | X O | | O |
    | X | | O |
    | | | O |
    | |BAR| |
    | O | | |
    | O | | X |
    | O | | X |
    | O X | | X X |
    | O X X | | X X O |
    +12-11-10--9--8--7-------6--5--4--3--2--1-+
    Pip count X: 154 O: 148 X-O: 0-0
    Cube: 1
    X to play 11

    Hitting your opponent's 5pt slot is usually better than switching points
    to hit on your own 1pt. Here, though, switching points is accompanied by
    making our own 5pt and also gives us a good chance of hitting *both*
    blots. For comparison, see the variant below.

    1. Rollout-| 6/5(2) 2/1*(2) eq:+0.377
    Player: 55.86% (G:24.39% B:0.42%)
    Opponent: 44.14% (G:10.51% B:0.51%)
    Confidence: -#0.016 (+0.360..+0.393) - [100.0%]

    2. Rollout-| 23/20* 11/10 eq:+0.302 (-0.075)
    Player: 56.12% (G:19.46% B:0.79%)
    Opponent: 43.88% (G:10.33% B:0.45%)
    Confidence: -#0.015 (+0.287..+0.317) - [0.0%]

    3. Rollout-| 24/20* eq:+0.286 (-0.091)
    Player: 55.96% (G:18.36% B:0.83%)
    Opponent: 44.04% (G:10.35% B:0.45%)
    Confidence: -#0.014 (+0.272..+0.299) - [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=-aB---D-B--AeD---c-ea---B-:0:0:1:11:0:0:0:0:10

    Score is X:0 O:0. Unlimited Game
    +13-14-15-16-17-18------19-20-21-22-23-24-+
    | X O | | O O X |
    | X O | | O X |
    | X O | | O |
    | X | | O |
    | | | O |
    | |BAR| |
    | O | | |
    | O | | X |
    | O | | X |
    | O X | | X X |
    | O X X | | X X O |
    +12-11-10--9--8--7-------6--5--4--3--2--1-+
    Pip count X: 155 O: 148 X-O: 0-0
    Cube: 1
    X to play 11

    1. Rollout-| 24/20* eq:+0.298
    Player: 55.93% (G:18.69% B:0.72%)
    Opponent: 44.07% (G:9.96% B:0.47%)
    Confidence: -#0.013 (+0.285..+0.311) - [100.0%]

    2. Rollout-| 6/5(2) 2/1*(2) eq:+0.224 (-0.074)
    Player: 52.92% (G:22.84% B:0.48%)
    Opponent: 47.08% (G:11.47% B:0.62%)
    Confidence: -#0.016 (+0.207..+0.240) - [0.0%]
    Duration: 5 minutes 46 seconds

    -| 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