1. Forum
  2. Usenet
  3. REC.GAMES.BACKGAMMON

  • In this simple no-contact checker play, would you waste 0.05 equity?

    From [email protected]@21:1/5 to All on Fri Apr 29 02:26:18 2022
    Doesn't 13/8 7/6 look more natural because less wasteful?
    Who would play 8/3 here?

    Paul

    XGID=-C-B--------a----baebca---:1:-1:-1:51:0:0:3:0:10
    X:eXtremeGammon O:Daniel

    Score is X:0 O:0. Unlimited Game, Jacoby Beaver
    +13-14-15-16-17-18------19-20-21-22-23-24-+
    | X | | O O |
    | | | O O |
    | | | O |
    | | | |
    | | | |
    | |BAR| |
    | | | X |
    | | | X |
    | | | X X | +---+
    | X | | X X X | | 2 |
    | X X | | X X X X | +---+
    +12-11-10--9--8--7-------6--5--4--3--2--1-+
    Pip count X: 91 O: 9 X-O: 0-0
    Cube: 2, X own cube
    X to play 51

    1. 4-ply 8/3 7/6 eq:-1.488
    Player: 0.00% (G:0.00% B:0.00%)
    Opponent: 100.00% (G:48.80% B:0.00%)

    2. 4-ply 13/8 7/6 eq:-1.534 (-0.046)
    Player: 0.00% (G:0.00% B:0.00%)
    Opponent: 100.00% (G:53.43% B:0.00%)

    3. 4-ply 8/2 eq:-1.812 (-0.324)
    Player: 0.00% (G:0.00% B:0.00%)
    Opponent: 100.00% (G:81.16% B:0.00%)

    4. 4-ply 8/7 6/1 eq:-1.847 (-0.359)
    Player: 0.00% (G:0.00% B:0.00%)
    Opponent: 100.00% (G:84.70% B:0.00%)

    5. 3-ply 13/12 8/3 eq:-1.576 (-0.088)
    Player: 0.02% (G:0.00% B:0.00%)
    Opponent: 99.98% (G:57.61% B:0.00%)


    eXtreme Gammon Version: 2.10

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Timothy Chow@21:1/5 to [email protected] on Fri Apr 29 08:00:28 2022
    On 4/29/2022 5:26 AM, [email protected] wrote:
    Doesn't 13/8 7/6 look more natural because less wasteful?
    Who would play 8/3 here?

    Paul

    XGID=-C-B--------a----baebca---:1:-1:-1:51:0:0:3:0:10
    X:eXtremeGammon O:Daniel

    Score is X:0 O:0. Unlimited Game, Jacoby Beaver
    +13-14-15-16-17-18------19-20-21-22-23-24-+
    | X | | O O |
    | | | O O |
    | | | O |
    | | | |
    | | | |
    | |BAR| |
    | | | X |
    | | | X |
    | | | X X | +---+
    | X | | X X X | | 2 |
    | X X | | X X X X | +---+
    +12-11-10--9--8--7-------6--5--4--3--2--1-+
    Pip count X: 91 O: 9 X-O: 0-0
    Cube: 2, X own cube
    X to play 51

    You're saving the gammon, so crossovers matter a lot more than pips.
    You're going to need three crossovers regardless.
    8/3 means you'll be able to get a crossover if you roll an ace.
    Ensuring you can get a crossover with an ace is a common theme
    when it comes to saving the gammon.

    ---
    Tim Chow

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