• 4pt vs 7pt 13

    From Timothy Chow@21:1/5 to All on Fri Jul 14 07:26:17 2023
    XGID=-a-B-BC-BaB-bB---c-ccbB---:0:0:1:33:0:0:0:0:10

    Score is X:0 O:0. Unlimited Game
    +13-14-15-16-17-18------19-20-21-22-23-24-+
    | X O | | O O O X |
    | X O | | O O O X |
    | O | | O O |
    | | | |
    | | | |
    | |BAR| |
    | | | |
    | | | |
    | | | X |
    | O X X | | X X X |
    | O X O X | | X X X O |
    +12-11-10--9--8--7-------6--5--4--3--2--1-+
    Pip count X: 140 O: 131 X-O: 0-0
    Cube: 1
    X to play 33

    ---
    Tim Chow

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From ah....Clem@21:1/5 to Timothy Chow on Fri Jul 14 11:35:29 2023
    On 7/14/2023 7:26 AM, Timothy Chow wrote:
    XGID=-a-B-BC-BaB-bB---c-ccbB---:0:0:1:33:0:0:0:0:10

    Score is X:0 O:0. Unlimited Game
     +13-14-15-16-17-18------19-20-21-22-23-24-+
     | X           O    |   | O  O  O  X       |
     | X           O    |   | O  O  O  X       |
     |             O    |   | O  O             |
     |                  |   |                  |
     |                  |   |                  |
     |                  |BAR|                  |
     |                  |   |                  |
     |                  |   |                  |
     |                  |   | X                |
     | O     X     X    |   | X  X     X       |
     | O     X  O  X    |   | X  X     X     O |
     +12-11-10--9--8--7-------6--5--4--3--2--1-+
    Pip count  X: 140  O: 131 X-O: 0-0
    Cube: 1
    X to play 33

    This looks more like a priming battle than an attacking contest. That
    favors making the bar point.

    OTOH, making the bar means abandoning the midpoint and outfield coverage
    should O spring the runner. Seems like a toss up so I'll go with making
    the four point since that seems to be the default play.

    10/4(2)

    --
    Ah....Clem
    The future is fun, the future is fair.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Timothy Chow@21:1/5 to All on Sun Jul 16 08:40:28 2023
    XGID=-a-B-BC-BaB-bB---c-ccbB---:0:0:1:33:0:0:0:0:10

    Score is X:0 O:0. Unlimited Game
    +13-14-15-16-17-18------19-20-21-22-23-24-+
    | X O | | O O O X |
    | X O | | O O O X |
    | O | | O O |
    | | | |
    | | | |
    | |BAR| |
    | | | |
    | | | |
    | | | X |
    | O X X | | X X X |
    | O X O X | | X X X O |
    +12-11-10--9--8--7-------6--5--4--3--2--1-+
    Pip count X: 140 O: 131 X-O: 0-0
    Cube: 1
    X to play 33

    It seems like ah...clem and Renan are tempted to think, "When in
    doubt, make the 4pt." But XG says that would be a whopper here.
    Ah...clem started off with the right idea, noting that this is
    more of a priming battle than an attacking contest. You can also
    apply the principle of asking, "which is harder?"---making the bar
    point now and later making the 4pt, or making the 4pt now and later
    making the bar point? It should be easier to make the 4pt later
    after making the bar point first.

    1. Rollout¹ 13/7(2) eq:+0.324
    Player: 58.57% (G:14.85% B:0.44%)
    Opponent: 41.43% (G:9.06% B:0.37%)
    Confidence: ±0.011 (+0.313..+0.336) - [100.0%]

    2. Rollout¹ 10/4(2) eq:+0.206 (-0.119)
    Player: 54.32% (G:16.97% B:0.42%)
    Opponent: 45.68% (G:9.82% B:0.42%)
    Confidence: ±0.013 (+0.193..+0.219) - [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)