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  • Epstein's rule

    From pepstein5@gmail.com@21:1/5 to All on Sat Dec 11 06:33:21 2021
    When bearing off against contact, if you have taken at least 6 checkers
    off, and your opponent therefore can't double after hitting you, an extra checker off is more important than an extra indirect shot.
    Here, my safe play only reduces the hitting probability by 1/36 making
    it even worse than usual.

    Paul

    XGID=-CDaa-B--------a-bacbbb---:1:-1:1:61:5:18:3:0:10
    X:Daniel O:eXtremeGammon

    Score is X:5 O:18. Unlimited Game, Jacoby Beaver
    +13-14-15-16-17-18------19-20-21-22-23-24-+
    | O O O | | O O O O | +---+
    | O | | O O O O | | 2 |
    | | | O | +---+
    | | | |
    | | | |
    | |BAR| |
    | | | |
    | | | X |
    | | | X X |
    | | | X X X |
    | | | X O O X X |
    +12-11-10--9--8--7-------6--5--4--3--2--1-+
    Pip count X: 23 O: 118 X-O: 5-18
    Cube: 2, O own cube
    X to play 61

    1. XG Roller+ 6/Off 1/Off eq:+0.755
    Player: 71.76% (G:41.50% B:0.45%)
    Opponent: 28.24% (G:0.00% B:0.00%)

    2. XG Roller+ 6/5 6/Off eq:+0.693 (-0.062)
    Player: 68.85% (G:42.44% B:0.12%)
    Opponent: 31.15% (G:0.00% B:0.00%)

    3. 3-ply 6/Off 2/1 eq:+0.614 (-0.141)
    Player: 67.12% (G:38.32% B:0.42%)
    Opponent: 32.88% (G:0.00% B:0.00%)


    eXtreme Gammon Version: 2.10

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Stick Rice@21:1/5 to peps...@gmail.com on Sat Dec 11 18:53:10 2021
    On Saturday, December 11, 2021 at 9:33:22 AM UTC-5, peps...@gmail.com wrote:
    When bearing off against contact, if you have taken at least 6 checkers
    off, and your opponent therefore can't double after hitting you, an extra checker off is more important than an extra indirect shot.
    Here, my safe play only reduces the hitting probability by 1/36 making
    it even worse than usual.

    Paul

    XGID=-CDaa-B--------a-bacbbb---:1:-1:1:61:5:18:3:0:10
    X:Daniel O:eXtremeGammon

    Score is X:5 O:18. Unlimited Game, Jacoby Beaver +13-14-15-16-17-18------19-20-21-22-23-24-+
    | O O O | | O O O O | +---+
    | O | | O O O O | | 2 |
    | | | O | +---+
    | | | |
    | | | |
    | |BAR| |
    | | | |
    | | | X |
    | | | X X |
    | | | X X X |
    | | | X O O X X |
    +12-11-10--9--8--7-------6--5--4--3--2--1-+
    Pip count X: 23 O: 118 X-O: 5-18
    Cube: 2, O own cube
    X to play 61

    1. XG Roller+ 6/Off 1/Off eq:+0.755
    Player: 71.76% (G:41.50% B:0.45%)
    Opponent: 28.24% (G:0.00% B:0.00%)

    2. XG Roller+ 6/5 6/Off eq:+0.693 (-0.062)
    Player: 68.85% (G:42.44% B:0.12%)
    Opponent: 31.15% (G:0.00% B:0.00%)

    3. 3-ply 6/Off 2/1 eq:+0.614 (-0.141)
    Player: 67.12% (G:38.32% B:0.42%)
    Opponent: 32.88% (G:0.00% B:0.00%)


    eXtreme Gammon Version: 2.10

    http://www.gammonlife.com/writers/07tardieuart1.htm

    Stick

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