• Holding game cube

    From Timothy Chow@21:1/5 to All on Mon Dec 25 11:14:12 2023
    XGID=-CBCabC-B---B-----bbbcba--:1:1:1:00:0:0:0:0:10

    Score is X:0 O:0. Unlimited Game
    +13-14-15-16-17-18------19-20-21-22-23-24-+
    | O | | O O O O O |
    | O | | O O O O |
    | | | O |
    | | | |
    | | | |
    | |BAR| |
    | | | |
    | | | |
    | | | X X X | +---+
    | X X | | X O X X X | | 2 |
    | X X | | X O O X X X | +---+
    +12-11-10--9--8--7-------6--5--4--3--2--1-+
    Pip count X: 74 O: 117 X-O: 0-0
    Cube: 2, X own cube
    X on roll, cube action

    ---
    Tim Chow

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Timothy Chow@21:1/5 to All on Thu Dec 28 10:00:46 2023
    XGID=-CBCabC-B---B-----bbbcba--:1:1:1:00:0:0:0:0:10

    Score is X:0 O:0. Unlimited Game
    +13-14-15-16-17-18------19-20-21-22-23-24-+
    | O | | O O O O O |
    | O | | O O O O |
    | | | O |
    | | | |
    | | | |
    | |BAR| |
    | | | |
    | | | |
    | | | X X X | +---+
    | X X | | X O X X X | | 2 |
    | X X | | X O O X X X | +---+
    +12-11-10--9--8--7-------6--5--4--3--2--1-+
    Pip count X: 74 O: 117 X-O: 0-0
    Cube: 2, X own cube
    X on roll, cube action

    I thought this position was pretty bleak for O, since X's outfield
    point on the 12pt is seven pips away, which does not promise O very
    many shots. But O's offensive position is strong, and X's buried
    checkers are bad for X. O's extra checker back will help generate
    more shots for O, and is not especially vulnerable to being attacked.

    In the variant, I have moved a dead checker from X's 1pt to his 6pt,
    and that changes the bot verdict considerably.

    Analyzed in Rollout
    No redouble
    Player Winning Chances: 71.13% (G:12.28% B:0.06%)
    Opponent Winning Chances: 28.87% (G:3.82% B:0.14%)
    Redouble/Take
    Player Winning Chances: 70.84% (G:13.11% B:0.07%)
    Opponent Winning Chances: 29.16% (G:3.87% B:0.15%)

    Cubeful Equities:
    No redouble: +0.743 (-0.137)
    Redouble/Take: +0.880
    Redouble/Pass: +1.000 (+0.120)

    Best Cube action: Redouble / Take

    Rollout:
    1296 Games rolled with Variance Reduction.
    Dice Seed: 271828
    Moves: 3-ply, cube decisions: XG Roller
    Confidence No Double: ± 0.006 (+0.737..+0.749)
    Confidence Double: ± 0.009 (+0.871..+0.888)

    eXtreme Gammon Version: 2.19.211.pre-release

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

    XGID=-BBCabD-B---B-----bbbcba--:1:1:1:00:0:0:0:0:10

    Score is X:0 O:0. Unlimited Game
    +13-14-15-16-17-18------19-20-21-22-23-24-+
    | O | | O O O O O |
    | O | | O O O O |
    | | | O |
    | | | |
    | | | |
    | |BAR| |
    | | | |
    | | | X |
    | | | X X | +---+
    | X X | | X O X X X | | 2 |
    | X X | | X O O X X X | +---+
    +12-11-10--9--8--7-------6--5--4--3--2--1-+
    Pip count X: 79 O: 117 X-O: 0-0
    Cube: 2, X own cube
    X on roll, cube action

    Analyzed in Rollout
    No redouble
    Player Winning Chances: 74.11% (G:10.61% B:0.06%)
    Opponent Winning Chances: 25.89% (G:3.14% B:0.09%)
    Redouble/Take
    Player Winning Chances: 73.96% (G:11.21% B:0.07%)
    Opponent Winning Chances: 26.04% (G:3.14% B:0.09%)

    Cubeful Equities:
    No redouble: +0.816 (-0.178)
    Redouble/Take: +0.994
    Redouble/Pass: +1.000 (+0.006)

    Best Cube action: Redouble / Take

    Rollout:
    1296 Games rolled with Variance Reduction.
    Dice Seed: 271828
    Moves: 3-ply, cube decisions: XG Roller
    Confidence No Double: ± 0.007 (+0.809..+0.824)
    Confidence Double: ± 0.008 (+0.986..+1.002)

    eXtreme Gammon Version: 2.19.211.pre-release

    ---
    Tim Chow

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