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  • Blitz versus prime

    From Timothy Chow@tchow12000@yahoo.com to rec.games.backgammon on Tue Jan 16 08:44:15 2024
    From Newsgroup: rec.games.backgammon

    XGID=aB-aaBCAE--------ccdb-A-A-:1:1:1:52:0:0:0:0:10

    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 X |
    | O O | | O O |
    | O O | | O |
    | | | O |
    | | | |
    | |BAR| |
    | X | O | |
    | X | | |
    | X | | X | +---+
    | X | | X X X | | 2 |
    | X X | | X X O O X | +---+
    +12-11-10--9--8--7-------6--5--4--3--2--1-+
    Pip count X: 123 O: 147 X-O: 0-0
    Cube: 2, X own cube
    X to play 52

    ---
    Tim Chow
    --- Synchronet 3.21b-Linux NewsLink 1.2
  • From Timothy Chow@tchow12000@yahoo.com to rec.games.backgammon on Thu Jan 18 08:38:46 2024
    From Newsgroup: rec.games.backgammon

    XGID=aB-aaBCAE--------ccdb-A-A-:1:1:1:52:0:0:0:0:10

    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 X |
    | O O | | O O |
    | O O | | O |
    | | | O |
    | | | |
    | |BAR| |
    | X | O | |
    | X | | |
    | X | | X | +---+
    | X | | X X X | | 2 |
    | X X | | X X O O X | +---+
    +12-11-10--9--8--7-------6--5--4--3--2--1-+
    Pip count X: 123 O: 147 X-O: 0-0
    Cube: 2, X own cube
    X to play 52

    This is another position where X has to decide whether to go all out
    with the blitz, or whether he needs to step up his back checker so
    that it sees daylight. XG says to go all out, but see the variant.

    1. Rollout-| 8/3* 6/4* eq:+0.472
    Player: 56.30% (G:32.70% B:1.29%)
    Opponent: 43.70% (G:14.15% B:1.20%)
    Confidence: -#0.017 (+0.454..+0.489) - [100.0%]

    2. Rollout-| 24/22 8/3* eq:+0.381 (-0.091)
    Player: 53.72% (G:25.95% B:0.90%)
    Opponent: 46.28% (G:11.61% B:0.55%)
    Confidence: -#0.014 (+0.367..+0.395) - [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-aaBCAE--------ccdb--AA-:1:1:1:52:0:0:0:0:10

    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 X |
    | O O | | O O |
    | O O | | O |
    | | | O |
    | | | |
    | |BAR| |
    | X | O | |
    | X | | |
    | X | | X | +---+
    | X | | X X X | | 2 |
    | X X | | X X O O X | +---+
    +12-11-10--9--8--7-------6--5--4--3--2--1-+
    Pip count X: 124 O: 147 X-O: 0-0
    Cube: 2, X own cube
    X to play 52

    1. Rollout-| 23/21 8/3* eq:+0.410
    Player: 53.90% (G:26.91% B:0.94%)
    Opponent: 46.10% (G:13.17% B:0.94%)
    Confidence: -#0.008 (+0.402..+0.418) - [100.0%]

    2. Rollout-| 8/3* 6/4* eq:+0.373 (-0.037)
    Player: 52.08% (G:29.54% B:1.20%)
    Opponent: 47.92% (G:15.89% B:1.32%)
    Confidence: -#0.009 (+0.364..+0.382) - [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
  • From Stick Rice@bananaboater315@gmail.com to rec.games.backgammon on Thu Jan 18 12:31:30 2024
    From Newsgroup: rec.games.backgammon

    On Thursday, January 18, 2024 at 8:38:49rC>AM UTC-5, Timothy Chow wrote:
    XGID=aB-aaBCAE--------ccdb-A-A-:1:1:1:52:0:0:0:0:10

    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 X |
    | O O | | O O |
    | O O | | O |
    | | | O |
    | | | |
    | |BAR| |
    | X | O | |
    | X | | |
    | X | | X | +---+
    | X | | X X X | | 2 |
    | X X | | X X O O X | +---+
    +12-11-10--9--8--7-------6--5--4--3--2--1-+
    Pip count X: 123 O: 147 X-O: 0-0
    Cube: 2, X own cube
    X to play 52
    This is another position where X has to decide whether to go all out
    with the blitz, or whether he needs to step up his back checker so
    that it sees daylight. XG says to go all out, but see the variant.

    1. Rollout-| 8/3* 6/4* eq:+0.472
    Player: 56.30% (G:32.70% B:1.29%)
    Opponent: 43.70% (G:14.15% B:1.20%)
    Confidence: -#0.017 (+0.454..+0.489) - [100.0%]

    2. Rollout-| 24/22 8/3* eq:+0.381 (-0.091)
    Player: 53.72% (G:25.95% B:0.90%)
    Opponent: 46.28% (G:11.61% B:0.55%)
    Confidence: -#0.014 (+0.367..+0.395) - [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-aaBCAE--------ccdb--AA-:1:1:1:52:0:0:0:0:10
    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 X |
    | O O | | O O |
    | O O | | O |
    | | | O |
    | | | |
    | |BAR| |
    | X | O | |
    | X | | |
    | X | | X | +---+
    | X | | X X X | | 2 |
    | X X | | X X O O X | +---+
    +12-11-10--9--8--7-------6--5--4--3--2--1-+
    Pip count X: 124 O: 147 X-O: 0-0
    Cube: 2, X own cube
    X to play 52
    1. Rollout-| 23/21 8/3* eq:+0.410
    Player: 53.90% (G:26.91% B:0.94%)
    Opponent: 46.10% (G:13.17% B:0.94%)
    Confidence: -#0.008 (+0.402..+0.418) - [100.0%]

    2. Rollout-| 8/3* 6/4* eq:+0.373 (-0.037)
    Player: 52.08% (G:29.54% B:1.20%)
    Opponent: 47.92% (G:15.89% B:1.32%)
    Confidence: -#0.009 (+0.364..+0.382) - [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
    I would not consider stepping up with the back checker here 'seeing daylight'. We essentially try to prime ourselves if we make the anchor.
    Stick
    --- Synchronet 3.21b-Linux NewsLink 1.2