• Hit twice or make the 5pt?

    From Timothy Chow@21:1/5 to All on Sun Oct 16 08:50:36 2022
    XGID=-a-Ba-D-B---aC-aBa-bbbbb-B:1:1:1:11:0:0:0:0:10

    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 X O | | O O O O O |
    | X X | | O O O O O |
    | X | | |
    | | X | |
    | | X | |
    | |BAR| |
    | | | |
    | | | X |
    | | | X | +---+
    | X | | X X | | 2 |
    | O X | | X O X O | +---+
    +12-11-10--9--8--7-------6--5--4--3--2--1-+
    Pip count X: 167 O: 116 X-O: 0-0
    Cube: 2, X own cube
    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 Tue Oct 18 08:34:49 2022
    XGID=-a-Ba-D-B---aC-aBa-bbbbb-B:1:1:1:11:0:0:0:0:10

    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 X O | | O O O O O |
    | X X | | O O O O O |
    | X | | |
    | | X | |
    | | X | |
    | |BAR| |
    | | | |
    | | | X |
    | | | X | +---+
    | X | | X X | | 2 |
    | O X | | X O X O | +---+
    +12-11-10--9--8--7-------6--5--4--3--2--1-+
    Pip count X: 167 O: 116 X-O: 0-0
    Cube: 2, X own cube
    X to play 11

    I thought that this excellent roll might provide a good opportunity to
    try to seize the advantage, and I hit twice. But the rollout below hates
    it. It may be that O's super-joker 55 from the bar is just too strong.
    In the variant, O has no way to hit back immediately from the bar, and
    the top two plays roll out to a tie.

    1. Rollout¹ Bar/24(2) 6/5(2) eq:-0.102
    Player: 44.07% (G:9.69% B:0.52%)
    Opponent: 55.93% (G:24.28% B:2.82%)
    Confidence: ±0.012 (-0.114..-0.090) - [100.0%]

    2. Rollout¹ Bar/24(2) 16/15* 13/12* eq:-0.204 (-0.102)
    Player: 41.03% (G:11.58% B:0.83%)
    Opponent: 58.97% (G:27.37% B:3.17%)
    Confidence: ±0.012 (-0.216..-0.192) - [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-Ba-D-B---aCaB-a-bbbbb-B:1:1:1:11:0:0:0:0:10

    Score is X:0 O:0. Unlimited Game
    +13-14-15-16-17-18------19-20-21-22-23-24-+
    | X O X O | | O O O O O |
    | X X | | O O O O O |
    | X | | |
    | | X | |
    | | X | |
    | |BAR| |
    | | | |
    | | | X |
    | | | X | +---+
    | X | | X X | | 2 |
    | O X | | X O X O | +---+
    +12-11-10--9--8--7-------6--5--4--3--2--1-+
    Pip count X: 165 O: 117 X-O: 0-0
    Cube: 2, X own cube
    X to play 11

    1. Rollout¹ Bar/24(2) 6/5(2) eq:-0.189
    Player: 41.52% (G:8.57% B:0.46%)
    Opponent: 58.48% (G:25.07% B:3.06%)
    Confidence: ±0.010 (-0.199..-0.179) - [56.6%]

    2. Rollout¹ Bar/24(2) 15/14* 13/12* eq:-0.191 (-0.001)
    Player: 41.29% (G:11.57% B:0.76%)
    Opponent: 58.71% (G:27.18% B:3.15%)
    Confidence: ±0.011 (-0.201..-0.180) - [43.4%]

    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)
  • From Stick Rice@21:1/5 to Tim Chow on Tue Oct 18 16:37:28 2022
    On Tuesday, October 18, 2022 at 8:34:51 AM UTC-4, Tim Chow wrote:
    It may be that O's super-joker 55 from the bar is just too strong.
    In the variant, O has no way to hit back immediately from the bar, and
    the top two plays roll out to a tie.

    Come again? In the variant O has two! ways to hit back from the bar with that super joker [55].

    Stick

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Timothy Chow@21:1/5 to Stick Rice on Tue Oct 18 22:52:50 2022
    On 10/18/2022 7:37 PM, Stick Rice wrote:
    On Tuesday, October 18, 2022 at 8:34:51 AM UTC-4, Tim Chow wrote:
    >It may be that O's super-joker 55 from the bar is just too strong.
    In the variant, O has no way to hit back immediately from the bar, and
    the top two plays roll out to a tie.

    Come again? In the variant O has two! ways to hit back from the bar with that super joker [55].

    Whoops! Yes, of course...I mixed up the variant I posted with a
    different variant I was looking at but didn't post. So now I'm not sure
    what's going on.

    ---
    Tim Chow

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