• Blitz versus prime cube action 2

    From Timothy Chow@tchow12000@yahoo.com to rec.games.backgammon on Thu Jan 18 08:41:48 2024
    From Newsgroup: rec.games.backgammon

    XGID=aBBCBaB--A--b-a--bbdbBA---:0:0:1:00:0:0:0:0:10

    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 X X |
    | O O | | O O X |
    | | | O |
    | | | O |
    | | | |
    | |BAR| |
    | | O | |
    | | | |
    | | | X |
    | O | | X X X X X |
    | O X | | X O X X X X |
    +12-11-10--9--8--7-------6--5--4--3--2--1-+
    Pip count X: 108 O: 146 X-O: 0-0
    Cube: 1
    X on roll, cube action

    ---
    Tim Chow
    --- Synchronet 3.21b-Linux NewsLink 1.2
  • From Timothy Chow@tchow12000@yahoo.com to rec.games.backgammon on Sat Jan 20 14:32:49 2024
    From Newsgroup: rec.games.backgammon

    XGID=aBBCBaB--A--b-a--bbdbBA---:0:0:1:00:0:0:0:0:10

    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 X X |
    | O O | | O O X |
    | | | O |
    | | | O |
    | | | |
    | |BAR| |
    | | O | |
    | | | |
    | | | X |
    | O | | X X X X X |
    | O X | | X O X X X X |
    +12-11-10--9--8--7-------6--5--4--3--2--1-+
    Pip count X: 108 O: 146 X-O: 0-0
    Cube: 1
    X on roll, cube action

    Compared to the previous position, X's back checkers are better
    poised to jump over O's prime, but O has entered one checker from
    the bar. Entering a checker is huge. The rollout verdict here is
    big double, big take.

    Analyzed in Rollout
    No double
    Player Winning Chances: 61.40% (G:41.34% B:0.56%)
    Opponent Winning Chances: 38.60% (G:8.63% B:0.41%)
    Double/Take
    Player Winning Chances: 61.64% (G:41.51% B:0.52%)
    Opponent Winning Chances: 38.36% (G:8.74% B:0.41%)

    Cubeful Equities:
    No double: +0.569 (-0.208)
    Double/Take: +0.777
    Double/Pass: +1.000 (+0.223)

    Best Cube action: Double / Take

    Rollout:
    1296 Games rolled with Variance Reduction.
    Dice Seed: 271828
    Moves: 3-ply, cube decisions: XG Roller
    Confidence No Double: -# 0.015 (+0.554..+0.584)
    Confidence Double: -# 0.020 (+0.757..+0.798)

    eXtreme Gammon Version: 2.19.211.pre-release

    ---
    Tim Chow
    --- Synchronet 3.21b-Linux NewsLink 1.2