• Is this a backgame? 2

    From Timothy Chow@21:1/5 to All on Wed Oct 25 22:40:29 2023
    XGID=----ACB-Bb---A-b-cbdBBbA-A:1:1:1:55:0:0:0:0:10

    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 X |
    | O O O | | O X X O |
    | O | | O |
    | | | O |
    | | X | |
    | |BAR| |
    | | | |
    | | | |
    | | | X | +---+
    | O X | | X X | | 2 |
    | O X | | X X X | +---+
    +12-11-10--9--8--7-------6--5--4--3--2--1-+
    Pip count X: 190 O: 120 X-O: 0-0
    Cube: 2, X own cube
    X to play 55

    ---
    Tim Chow

    --- SoupGate-Win32 v1.05
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  • From Frank Berger@21:1/5 to All on Thu Oct 26 07:56:43 2023
    IMHO : yes

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  • From Stick Rice@21:1/5 to Timothy Chow on Thu Oct 26 10:00:18 2023
    On Wednesday, October 25, 2023 at 10:40:32 PM UTC-4, Timothy Chow wrote:
    XGID=----ACB-Bb---A-b-cbdBBbA-A:1:1:1:55:0:0:0:0:10

    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 X |
    | O O O | | O X X O |
    | O | | O |
    | | | O |
    | | X | |
    | |BAR| |
    | | | |
    | | | |
    | | | X | +---+
    | O X | | X X | | 2 |
    | O X | | X X X | +---+
    +12-11-10--9--8--7-------6--5--4--3--2--1-+
    Pip count X: 190 O: 120 X-O: 0-0
    Cube: 2, X own cube
    X to play 55

    ---
    Tim Chow

    Obvi.

    Stick

    --- SoupGate-Win32 v1.05
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  • From ah...Clem@21:1/5 to Timothy Chow on Fri Oct 27 11:46:50 2023
    On 10/25/2023 10:40 PM, Timothy Chow wrote:
    XGID=----ACB-Bb---A-b-cbdBBbA-A:1:1:1:55:0:0:0:0:10

    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  X    |  |       O     O  O |   | O  X  X  O       |  |             O    |   | O                |  |                  |   | O                |
     |                  | X |                  |
     |                  |BAR|                  |
     |                  |   |                  |
     |                  |   |                  |
     |                  |   |    X             | +---+
     |          O  X    |   | X  X             | | 2 |
     |          O  X    |   | X  X  X          | +---+  +12-11-10--9--8--7-------6--5--4--3--2--1-+
    Pip count  X: 190  O: 120 X-O: 0-0
    Cube: 2, X own cube
    X to play 55

    Well, it was until X rolled the 55. 70 pips of timing is adequate for a backgame. 50 is not enough.

    So, looks like it's time to run off the anchor. bar/20 21/16(2) 13/8 and
    hope O coughs up a shot.

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  • From Timothy Chow@21:1/5 to All on Sat Oct 28 08:52:17 2023
    XGID=----ACB-Bb---A-b-cbdBBbA-A:1:1:1:55:0:0:0:0:10

    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 X |
    | O O O | | O X X O |
    | O | | O |
    | | | O |
    | | X | |
    | |BAR| |
    | | | |
    | | | |
    | | | X | +---+
    | O X | | X X | | 2 |
    | O X | | X X X | +---+
    +12-11-10--9--8--7-------6--5--4--3--2--1-+
    Pip count X: 190 O: 120 X-O: 0-0
    Cube: 2, X own cube
    X to play 55

    Sometimes I panic too soon when I get a roll like this. Like ah...Clem,
    I decided to abandon one of my anchors, fearing that my position would otherwise collapse because of poor timing. However, abandoning an
    anchor is very committal, and XG strongly recommends sitting tight for
    now. This 55 can be absorbed, and O's broken four-prime is not so threatening---X has good chances of being able to free another checker
    soon and preserve his timing.

    1. Rollout¹ Bar/20 13/3 8/3 eq:-0.301
    Player: 34.46% (G:5.85% B:0.19%)
    Opponent: 65.54% (G:17.65% B:0.42%)
    Confidence: ±0.010 (-0.310..-0.291) - [100.0%]

    2. Rollout¹ Bar/20 13/3 6/1 eq:-0.484 (-0.183)
    Player: 29.64% (G:4.02% B:0.14%)
    Opponent: 70.36% (G:22.86% B:0.50%)
    Confidence: ±0.010 (-0.494..-0.474) - [0.0%]

    3. Rollout¹ Bar/20 13/8 6/1(2) eq:-0.511 (-0.210)
    Player: 27.78% (G:3.48% B:0.08%)
    Opponent: 72.22% (G:20.69% B:0.31%)
    Confidence: ±0.009 (-0.519..-0.502) - [0.0%]

    4. Rollout¹ Bar/20 8/3(2) 6/1 eq:-0.514 (-0.213)
    Player: 30.99% (G:4.87% B:0.17%)
    Opponent: 69.01% (G:30.31% B:0.80%)
    Confidence: ±0.011 (-0.526..-0.503) - [0.0%]

    5. Rollout¹ Bar/20 21/16(2) 8/3 eq:-0.533 (-0.232)
    Player: 30.97% (G:5.75% B:0.24%)
    Opponent: 69.03% (G:31.99% B:1.76%)
    Confidence: ±0.010 (-0.543..-0.522) - [0.0%]

    6. Rollout¹ Bar/20 21/16(2) 13/8 eq:-0.546 (-0.246)
    Player: 26.57% (G:4.50% B:0.16%)
    Opponent: 73.43% (G:22.17% B:0.40%)
    Confidence: ±0.009 (-0.555..-0.537) - [0.0%]

    7. Rollout¹ Bar/20 21/6 eq:-0.547 (-0.246)
    Player: 31.31% (G:5.84% B:0.23%)
    Opponent: 68.69% (G:34.89% B:1.67%)
    Confidence: ±0.010 (-0.557..-0.536) - [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

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

    XGID=---AACB-Ab---A-b-cbdBBbA-A:1:1:1:55:0:0:0:0:10

    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 X |
    | O O O | | O X X O |
    | O | | O |
    | | | O |
    | | X | |
    | |BAR| |
    | | | |
    | | | |
    | | | X | +---+
    | O | | X X | | 2 |
    | O X | | X X X X | +---+
    +12-11-10--9--8--7-------6--5--4--3--2--1-+
    Pip count X: 185 O: 120 X-O: 0-0
    Cube: 2, X own cube
    X to play 55

    1. Rollout¹ Bar/20 13/3 8/3 eq:-0.404
    Player: 30.65% (G:4.70% B:0.16%)
    Opponent: 69.35% (G:17.20% B:0.35%)
    Confidence: ±0.009 (-0.413..-0.395) - [100.0%]

    2. Rollout¹ Bar/20 21/16(2) 8/3 eq:-0.430 (-0.026)
    Player: 32.04% (G:6.09% B:0.24%)
    Opponent: 67.96% (G:25.08% B:0.92%)
    Confidence: ±0.010 (-0.440..-0.420) - [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)