• 5-away/7-away recube

    From Timothy Chow@21:1/5 to All on Tue Jun 20 09:08:51 2023
    XGID=-aBB-bBBB-B-----AAa-Abccc-:1:1:1:00:2:0:0:7:10

    Score is X:2 O:0 7 pt.(s) match.
    +13-14-15-16-17-18------19-20-21-22-23-24-+
    | X X O | | X O O O O |
    | | | O O O O |
    | | | O O O |
    | | | |
    | | | |
    | |BAR| |
    | | | |
    | | | |
    | | | | +---+
    | X X X | | X O X X | | 2 |
    | X X X | | X O X X O | +---+
    +12-11-10--9--8--7-------6--5--4--3--2--1-+
    Pip count X: 125 O: 97 X-O: 2-0/7
    Cube: 2, X own cube
    X on roll, cube action

    ---
    Tim Chow

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From ah...Clem@21:1/5 to Timothy Chow on Tue Jun 20 18:16:28 2023
    On 6/20/2023 9:08 AM, Timothy Chow wrote:
    XGID=-aBB-bBBB-B-----AAa-Abccc-:1:1:1:00:2:0:0:7:10

    Score is X:2 O:0 7 pt.(s) match.  +13-14-15-16-17-18------19-20-21-22-23-24-+
     |          X  X  O |   |    X  O  O  O  O |  |                  |   |       O  O  O  O |  |                  |   |          O  O  O |  |                  |   |                  |
     |                  |   |                  |
     |                  |BAR|                  |
     |                  |   |                  |
     |                  |   |                  |
     |                  |   |                  | +---+
     |       X     X  X |   | X  O     X  X    | | 2 |  |       X     X  X |   | X  O     X  X  O | +---+  +12-11-10--9--8--7-------6--5--4--3--2--1-+
    Pip count  X: 125  O: 97 X-O: 2-0/7
    Cube: 2, X own cube
    X on roll, cube action

    At 5a 7a the leader has an elevated takepoint, but the trailer has a
    fairly "normal" takepoint of about 19%. Does O have that? Her board is
    weak but still something, and she has an advanced anchor plus a
    substantial lead in the race. So, I'll say take. The crunched board
    and the straggler on the ace plus the blot make me think there's enough
    market losers to ship it. Yeah, X doesn't want to eat an eight cube,
    but that's a calculated risk.

    D/T.

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  • From Timothy Chow@21:1/5 to All on Thu Jun 22 08:16:41 2023
    XGID=-aBB-bBBB-B-----AAa-Abccc-:1:1:1:00:2:0:0:7:10

    Score is X:2 O:0 7 pt.(s) match.
    +13-14-15-16-17-18------19-20-21-22-23-24-+
    | X X O | | X O O O O |
    | | | O O O O |
    | | | O O O |
    | | | |
    | | | |
    | |BAR| |
    | | | |
    | | | |
    | | | | +---+
    | X X X | | X O X X | | 2 |
    | X X X | | X O X X O | +---+
    +12-11-10--9--8--7-------6--5--4--3--2--1-+
    Pip count X: 125 O: 97 X-O: 2-0/7
    Cube: 2, X own cube
    X on roll, cube action

    Like ah...clem, I thought that O's position was wrecked enough to
    justify a redouble even at this score. However, O has the golden
    anchor and a large lead in the pip count, which XG thinks gives her
    position enough resilience that it doesn't think X should redouble
    just yet. As an illustration, I have rolled out a possible cube
    decision that X might face now if he doesn't redouble now: suppose
    X rolls 52 (played 20/18* 17/12) and O enters with 65 (played bar/14).
    XG thinks that O would still be able to take. So there aren't all
    that many market losers, according to XG.

    As a variant, I have downgraded O's anchor to the 4pt, and then XG
    thinks it's a borderline redouble.

    Analyzed in Rollout
    No redouble
    Player Winning Chances: 73.85% (G:19.67% B:1.13%)
    Opponent Winning Chances: 26.15% (G:3.68% B:0.03%)
    Redouble/Take
    Player Winning Chances: 74.58% (G:18.19% B:2.01%)
    Opponent Winning Chances: 25.42% (G:4.17% B:0.00%)

    Cubeful Equities:
    No redouble: +0.799
    Redouble/Take: +0.679 (-0.120)
    Redouble/Pass: +1.000 (+0.201)

    Best Cube action: No redouble / Take
    Percentage of wrong pass needed to make the double decision right: 37.3%

    Rollout:
    1296 Games rolled with Variance Reduction.
    Dice Seed: 271828
    Moves: 3-ply, cube decisions: XG Roller
    Confidence No Double: ± 0.008 (+0.790..+0.807)
    Confidence Double: ± 0.014 (+0.665..+0.693)

    eXtreme Gammon Version: 2.19.211.pre-release, MET: Kazaross XG2

    -----------------------------
    After 20/18* 17/12 and bar/14
    -----------------------------

    XGID=-aBB-bBBB-BaA---A-A--bccc-:1:1:1:00:2:0:0:7:10

    Score is X:2 O:0 7 pt.(s) match.
    +13-14-15-16-17-18------19-20-21-22-23-24-+
    | X X | | O O O O |
    | | | O O O O |
    | | | O O O |
    | | | |
    | | | |
    | |BAR| |
    | | | |
    | | | |
    | | | | +---+
    | X X X | | X O X X | | 2 |
    | X O X X X | | X O X X O | +---+
    +12-11-10--9--8--7-------6--5--4--3--2--1-+
    Pip count X: 118 O: 104 X-O: 2-0/7
    Cube: 2, X own cube
    X on roll, cube action

    Analyzed in Rollout
    No redouble
    Player Winning Chances: 78.36% (G:19.99% B:1.06%)
    Opponent Winning Chances: 21.64% (G:2.45% B:0.02%)
    Redouble/Take
    Player Winning Chances: 78.73% (G:18.09% B:1.39%)
    Opponent Winning Chances: 21.27% (G:2.69% B:0.00%)

    Cubeful Equities:
    No redouble: +0.921 (-0.016)
    Redouble/Take: +0.937
    Redouble/Pass: +1.000 (+0.063)

    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: ± 0.008 (+0.913..+0.929)
    Confidence Double: ± 0.013 (+0.924..+0.950)

    eXtreme Gammon Version: 2.19.211.pre-release, MET: Kazaross XG2

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

    XGID=-aBBb-BBB-B-----AAa-Abccc-:1:1:1:00:2:0:0:7:10

    Score is X:2 O:0 7 pt.(s) match.
    +13-14-15-16-17-18------19-20-21-22-23-24-+
    | X X O | | X O O O O |
    | | | O O O O |
    | | | O O O |
    | | | |
    | | | |
    | |BAR| |
    | | | |
    | | | |
    | | | | +---+
    | X X X | | X O X X | | 2 |
    | X X X | | X O X X O | +---+
    +12-11-10--9--8--7-------6--5--4--3--2--1-+
    Pip count X: 125 O: 99 X-O: 2-0/7
    Cube: 2, X own cube
    X on roll, cube action

    Analyzed in Rollout
    No redouble
    Player Winning Chances: 77.74% (G:20.44% B:1.15%)
    Opponent Winning Chances: 22.26% (G:3.36% B:0.03%)
    Redouble/Take
    Player Winning Chances: 78.15% (G:19.39% B:1.63%)
    Opponent Winning Chances: 21.85% (G:3.68% B:0.03%)

    Cubeful Equities:
    No redouble: +0.903 (-0.007)
    Redouble/Take: +0.910
    Redouble/Pass: +1.000 (+0.090)

    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: ± 0.008 (+0.895..+0.911)
    Confidence Double: ± 0.014 (+0.896..+0.925)

    eXtreme Gammon Version: 2.19.211.pre-release, MET: Kazaross XG2

    ---
    Tim Chow

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