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  • Bar point or anchor?

    From Timothy Chow@21:1/5 to All on Thu Jun 29 08:38:28 2023
    XGID=-A--aaD-DA--cC---c-eb-A-A-:0:0:1:62:0:0:0:0:10

    Score is X:0 O:0. Unlimited Game
    +13-14-15-16-17-18------19-20-21-22-23-24-+
    | X O | | O O X X |
    | X O | | O O |
    | X O | | O |
    | | | O |
    | | | O |
    | |BAR| |
    | | | |
    | X | | X |
    | O X | | X |
    | O X | | X |
    | O X X | | X O O X |
    +12-11-10--9--8--7-------6--5--4--3--2--1-+
    Pip count X: 151 O: 144 X-O: 0-0
    Cube: 1
    X to play 62

    ---
    Tim Chow

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From ah...Clem@21:1/5 to Timothy Chow on Thu Jun 29 10:13:39 2023
    On 6/29/2023 8:38 AM, Timothy Chow wrote:
    XGID=-A--aaD-DA--cC---c-eb-A-A-:0:0:1:62:0:0:0:0:10

    Score is X:0 O:0. Unlimited Game  +13-14-15-16-17-18------19-20-21-22-23-24-+
     | X           O    |   | O  O     X     X |
     | X           O    |   | O  O             |
     | X           O    |   | O                |  |                  |   | O                |
     |                  |   | O                |
     |                  |BAR|                  |
     |                  |   |                  |
     |             X    |   | X                |  | O           X    |   | X                |  | O           X    |   | X                |  | O        X  X    |   | X  O  O        X |  +12-11-10--9--8--7-------6--5--4--3--2--1-+
    Pip count  X: 151  O: 144 X-O: 0-0
    Cube: 1
    X to play 62


    After making the anchor, how do we play the six? 9/3 buries a second
    checker, as does 8//2. 13/7 is way too loose.

    Maybe make the ace point instead? Modern play says once you slot it, go
    ahead and make it, so it might be the bot play. I get dinged a lot
    because I'm reluctant to play to the ace (because is is wrong so often)


    I'll make the bar here. Seems like a fairly normal thing to do and
    maybe the bots will agree with me. Safety the blot that currently faces
    a double shot and make a permanent asset. It does leave our points
    stacked and stripped, but I'm not seeing that as enough of a liability
    to make the anchor or the ace.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Timothy Chow@21:1/5 to All on Sat Jul 1 09:11:05 2023
    XGID=-A--aaD-DA--cC---c-eb-A-A-:0:0:1:62:0:0:0:0:10

    Score is X:0 O:0. Unlimited Game
    +13-14-15-16-17-18------19-20-21-22-23-24-+
    | X O | | O O X X |
    | X O | | O O |
    | X O | | O |
    | | | O |
    | | | O |
    | |BAR| |
    | | | |
    | X | | X |
    | O X | | X |
    | O X | | X |
    | O X X | | X O O X |
    +12-11-10--9--8--7-------6--5--4--3--2--1-+
    Pip count X: 151 O: 144 X-O: 0-0
    Cube: 1
    X to play 62

    With O having 10 checkers stacked up in the zone and X having a weak
    board, making a defensive anchor is imperative, even though the 6 is
    awkward.

    1. Rollout¹ 24/22 9/3 eq:-0.415
    Player: 38.68% (G:7.15% B:0.14%)
    Opponent: 61.32% (G:10.09% B:0.42%)
    Confidence: ±0.011 (-0.426..-0.404) - [100.0%]

    2. Rollout¹ 9/1 eq:-0.521 (-0.105)
    Player: 37.60% (G:9.78% B:0.27%)
    Opponent: 62.40% (G:19.70% B:0.72%)
    Confidence: ±0.012 (-0.533..-0.508) - [0.0%]

    3. Rollout¹ 13/7 9/7 eq:-0.564 (-0.149)
    Player: 36.94% (G:9.56% B:0.33%)
    Opponent: 63.06% (G:21.13% B:0.89%)
    Confidence: ±0.017 (-0.580..-0.547) - [0.0%]

    ¹ 1296 Games rolled with Variance Reduction.
    Dice Seed: 271828
    Moves: 3-ply, cube decisions: XG Roller

    eXtreme Gammon Version: 2.19.211.pre-release

    ---
    Tim Chow

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