• Hit or make the 5pt? 2

    From Timothy Chow@21:1/5 to All on Sat Feb 19 20:16:43 2022
    XGID=-b----DBB-a-dC---c-d-A-aAB:0:0:1:11:0:0:0:0:10

    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 X O X |
    | X O | | O |
    | X O | | O |
    | | X | O |
    | | X | |
    | |BAR| |
    | | | |
    | O | | X |
    | O | | X |
    | O X X | | X O |
    | O O X X | | X O |
    +12-11-10--9--8--7-------6--5--4--3--2--1-+
    Pip count X: 188 O: 165 X-O: 0-0
    Cube: 1
    X to play 11

    ---
    Tim Chow

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Timothy Chow@21:1/5 to All on Mon Feb 21 08:28:56 2022
    XGID=-b----DBB-a-dC---c-d-A-aAB:0:0:1:11:0:0:0:0:10

    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 X O X |
    | X O | | O |
    | X O | | O |
    | | X | O |
    | | X | |
    | |BAR| |
    | | | |
    | O | | X |
    | O | | X |
    | O X X | | X O |
    | O O X X | | X O |
    +12-11-10--9--8--7-------6--5--4--3--2--1-+
    Pip count X: 188 O: 165 X-O: 0-0
    Cube: 1
    X to play 11

    Hitting is tempting here; it unstacks the ugly 24pt, gains pips in the
    race, and gains a tempo for hitting O's other blot. On the other hand,
    making the 5pt helps lock in O's back checkers. O's blot on her 2pt is misplaced anyway and so it's not urgent to hit it.

    In the variant, one of O's back checkers has escaped, so the priming
    strategy is less effective.

    1. Rollout¹ Bar/24(2) 6/5(2) eq:+0.413
    Player: 60.46% (G:18.55% B:1.04%)
    Opponent: 39.54% (G:13.02% B:0.98%)
    Confidence: ±0.023 (+0.390..+0.436) - [100.0%]

    2. Rollout¹ Bar/24 Bar/23* 21/20 eq:+0.196 (-0.217)
    Player: 53.95% (G:16.27% B:1.02%)
    Opponent: 46.05% (G:11.65% B:0.61%)
    Confidence: ±0.022 (+0.174..+0.218) - [0.0%]

    3. Rollout¹ Bar/24 Bar/23* 23/22 eq:+0.169 (-0.244)
    Player: 53.49% (G:15.85% B:0.89%)
    Opponent: 46.51% (G:11.55% B:0.61%)
    Confidence: ±0.016 (+0.153..+0.186) - [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=-a----DBB-b-dC---c-d-A-aAB:0:0:1:11:0:0:0:0:10

    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 X O X |
    | X O | | O |
    | X O | | O |
    | | X | O |
    | | X | |
    | |BAR| |
    | | | |
    | O | | X |
    | O | | X |
    | O 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: 188 O: 156 X-O: 0-0
    Cube: 1
    X to play 11

    1. Rollout¹ Bar/24(2) 6/5(2) eq:-0.032
    Player: 50.02% (G:14.29% B:0.65%)
    Opponent: 49.98% (G:16.73% B:1.21%)
    Confidence: ±0.008 (-0.040..-0.023) - [84.9%]

    2. Rollout¹ Bar/24 Bar/23* 21/20 eq:-0.038 (-0.007)
    Player: 48.65% (G:13.17% B:0.55%)
    Opponent: 51.35% (G:12.09% B:0.57%)
    Confidence: ±0.009 (-0.047..-0.029) - [14.9%]

    3. Rollout¹ Bar/24 Bar/23* 23/22 eq:-0.049 (-0.017)
    Player: 48.36% (G:13.06% B:0.57%)
    Opponent: 51.64% (G:12.65% B:0.64%)
    Confidence: ±0.009 (-0.058..-0.040) - [0.1%]

    ¹ 5184 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)