• Wish I had five 4's to play

    From Timothy Chow@21:1/5 to All on Sat Jun 18 15:30:48 2022
    XGID=-aa-B-D-BA--bDc--c-c-b-AA-:0:0:1:44:0:0:0:0:10

    X:Player 1 O:Player 2
    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 |
    | X O O | | O O |
    | X O O | | O |
    | X | | |
    | | | |
    | |BAR| |
    | | | |
    | | | X |
    | | | X |
    | O X | | X X |
    | O X X | | X X O O |
    +12-11-10--9--8--7-------6--5--4--3--2--1-+
    Pip count X: 156 O: 156 X-O: 0-0
    Cube: 1
    X to play 44

    ---
    Tim Chow

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Timothy Chow@21:1/5 to All on Mon Jun 20 09:21:49 2022
    XGID=-aa-B-D-BA--bDc--c-c-b-AA-:0:0:1:44:0:0:0:0:10

    X:Player 1 O:Player 2
    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 |
    | X O O | | O O |
    | X O O | | O |
    | X | | |
    | | | |
    | |BAR| |
    | | | |
    | | | X |
    | | | X |
    | O X | | X X |
    | O X X | | X X O O |
    +12-11-10--9--8--7-------6--5--4--3--2--1-+
    Pip count X: 156 O: 156 X-O: 0-0
    Cube: 1
    X to play 44

    Obviously the 5pt is better than the 2pt, but in a blitz, making a low
    point can be better if it avoids leaving a return shot and lets you
    bring more builders into the zone. The trouble here is that after
    6/2*(2) 13/9, there isn't a particularly productive fourth 4.

    XG thinks the decision is closer in the variant, where there *is* a
    productive fourth 4, although even in the variant, it prefers making
    the 5pt and hitting loose on the 2pt. Note that making the 5pt is
    less committal because it offers X priming possibilities as well as
    blitzing possibilities.

    1. Rollout¹ 13/5 9/5 6/2* eq:+0.382
    Player: 56.87% (G:25.38% B:1.07%)
    Opponent: 43.13% (G:12.46% B:0.73%)
    Confidence: ±0.017 (+0.365..+0.399) - [100.0%]

    2. Rollout¹ 13/5(2) eq:+0.212 (-0.170)
    Player: 53.61% (G:22.86% B:1.01%)
    Opponent: 46.39% (G:13.75% B:0.83%)
    Confidence: ±0.015 (+0.197..+0.227) - [0.0%]

    3. Rollout¹ 24/20 13/9 6/2*(2) eq:+0.205 (-0.177)
    Player: 53.38% (G:20.95% B:1.05%)
    Opponent: 46.62% (G:12.58% B:0.65%)
    Confidence: ±0.014 (+0.191..+0.219) - [0.0%]

    4. Rollout¹ 24/20 13/5 9/5 eq:+0.194 (-0.188)
    Player: 53.24% (G:21.91% B:1.14%)
    Opponent: 46.76% (G:14.26% B:0.69%)
    Confidence: ±0.014 (+0.179..+0.208) - [0.0%]

    5. Rollout¹ 13/9(2) 6/2*(2) eq:+0.191 (-0.190)
    Player: 53.35% (G:22.01% B:1.13%)
    Opponent: 46.65% (G:13.95% B:0.71%)
    Confidence: ±0.013 (+0.178..+0.204) - [0.0%]

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

    eXtreme Gammon Version: 2.19.207.pre-release

    -------
    Variant
    -------

    XGID=-aa-B-D-BA--bCcA-c-c-b-AA-:0:0:1:44:0:0:0:0:10

    X:Player 1 O:Player 2
    Score is X:0 O:0. Unlimited Game
    +13-14-15-16-17-18------19-20-21-22-23-24-+
    | X O X O | | O O X X |
    | X O O | | O O |
    | X O O | | O |
    | | | |
    | | | |
    | |BAR| |
    | | | |
    | | | X |
    | | | X |
    | O X | | X X |
    | O X X | | X X O O |
    +12-11-10--9--8--7-------6--5--4--3--2--1-+
    Pip count X: 158 O: 156 X-O: 0-0
    Cube: 1
    X to play 44

    1. Rollout¹ 13/5 9/5 6/2* eq:+0.254
    Player: 54.55% (G:23.96% B:1.31%)
    Opponent: 45.45% (G:15.37% B:1.26%)
    Confidence: ±0.019 (+0.235..+0.274) - [99.8%]

    2. Rollout¹ 15/11 13/5 9/5 eq:+0.218 (-0.037)
    Player: 53.68% (G:23.23% B:0.97%)
    Opponent: 46.32% (G:13.70% B:0.87%)
    Confidence: ±0.016 (+0.202..+0.234) - [0.2%]

    3. Rollout¹ 15/11 13/9 6/2*(2) eq:+0.209 (-0.046)
    Player: 53.43% (G:23.20% B:0.99%)
    Opponent: 46.57% (G:13.97% B:0.83%)
    Confidence: ±0.014 (+0.194..+0.223) - [0.0%]

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

    eXtreme Gammon Version: 2.19.207.pre-release

    ---
    Tim Chow

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