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  • Gammon go play

    From Timothy Chow@21:1/5 to All on Mon Jan 23 09:34:18 2023
    XGID=--aB-BC-a---bEb-Bb-c-b-b-A:0:0:1:63:0:1:1:2:10

    Score is X:0 O:1 2 pt.(s) match.
    +13-14-15-16-17-18------19-20-21-22-23-24-+
    | X O X O | | O O O |
    | X O X O | | O O O |
    | X | | O |
    | X | | |
    | X | X | |
    | |BAR| |
    | | | |
    | | | |
    | | | X |
    | O | | X X X |
    | O O | | X X X O |
    +12-11-10--9--8--7-------6--5--4--3--2--1-+
    Pip count X: 156 O: 134 X-O: 0-1/2 Crawford
    Cube: 1
    X to play 63

    ---
    Tim Chow

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Timothy Chow@21:1/5 to All on Wed Jan 25 08:50:12 2023
    XGID=--aB-BC-a---bEb-Bb-c-b-b-A:0:0:1:63:0:1:1:2:10

    Score is X:0 O:1 2 pt.(s) match.
    +13-14-15-16-17-18------19-20-21-22-23-24-+
    | X O X O | | O O O |
    | X O X O | | O O O |
    | X | | O |
    | X | | |
    | X | X | |
    | |BAR| |
    | | | |
    | | | |
    | | | X |
    | O | | X X X |
    | O O | | X X X O |
    +12-11-10--9--8--7-------6--5--4--3--2--1-+
    Pip count X: 156 O: 134 X-O: 0-1/2 Crawford
    Cube: 1
    X to play 63

    The score certainly makes a huge difference here. According to XG,
    bar/16 is mandatory at a normal score, and is essentially tied with
    bar/22 13/7 at DMP, but bar/22 13/7 is mandatory at GG.

    1. Rollout¹ Bar/22 13/7 eq:+0.079
    Player: 41.51% (G:12.46% B:0.71%)
    Opponent: 58.49% (G:24.66% B:2.05%)
    Confidence: ±0.007 (+0.072..+0.087) - [100.0%]

    2. Rollout¹ Bar/16 eq:-0.020 (-0.099)
    Player: 40.51% (G:8.49% B:0.75%)
    Opponent: 59.49% (G:12.33% B:0.47%)
    Confidence: ±0.007 (-0.027..-0.013) - [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, MET: Kazaross XG2

    ---
    Tim Chow

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From ah...Clem@21:1/5 to Timothy Chow on Sat Jan 28 08:09:19 2023
    On 1/23/2023 9:34 AM, Timothy Chow wrote:
    XGID=--aB-BC-a---bEb-Bb-c-b-b-A:0:0:1:63:0:1:1:2:10

    Score is X:0 O:1 2 pt.(s) match.  +13-14-15-16-17-18------19-20-21-22-23-24-+
     | X  O     X  O    |   | O     O     O    |
     | X  O     X  O    |   | O     O     O    |
     | X                |   | O                |  | X                |   |                  |
     | X                | X |                  |  |                  |BAR|                  |
     |                  |   |                  |
     |                  |   |                  |
     |                  |   | X                |
     | O                |   | X  X     X       |
     | O           O    |   | X  X     X  O    |  +12-11-10--9--8--7-------6--5--4--3--2--1-+
    Pip count  X: 156  O: 134 X-O: 0-1/2 Crawford
    Cube: 1
    X to play 63

    bar/16 is the obvious play. Even though X is behind in the race, there
    seems to be enough contact to escape the runner.

    Is the bot play 13/7? Bring another checker into the zone to facilitate
    a blitz? With only eight checkers in the zone? Not seeing it.

    bar/16.

    --- SoupGate-Win32 v1.05
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