• 5pt problems never get old 4

    From Timothy Chow@21:1/5 to All on Fri Jan 20 08:48:45 2023
    XGID=-B-BbAB-A--AcD--ad-e----B-:0:0:1:53:0:0:0:0:10

    Score is X:0 O:0. Unlimited Game
    +13-14-15-16-17-18------19-20-21-22-23-24-+
    | X O O | | O X |
    | X O | | O X |
    | X O | | O |
    | X O | | O |
    | | | O |
    | |BAR| |
    | | | |
    | | | |
    | O | | |
    | O | | X O X X |
    | O X X | | X X O X X |
    +12-11-10--9--8--7-------6--5--4--3--2--1-+
    Pip count X: 144 O: 152 X-O: 0-0
    Cube: 1
    X to play 53

    ---
    Tim Chow

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  • From ah...Clem@21:1/5 to Timothy Chow on Fri Jan 20 13:44:42 2023
    On 1/20/2023 8:48 AM, Timothy Chow wrote:
    XGID=-B-BbAB-A--AcD--ad-e----B-:0:0:1:53:0:0:0:0:10

    Score is X:0 O:0. Unlimited Game  +13-14-15-16-17-18------19-20-21-22-23-24-+
     | X        O  O    |   | O              X |
     | X           O    |   | O              X |
     | X           O    |   | O                |  | X           O    |   | O                |  |                  |   | O                |
     |                  |BAR|                  |
     |                  |   |                  |
     |                  |   |                  |
     | O                |   |                  |
     | O                |   | X     O  X     X |
     | O  X        X    |   | X  X  O  X     X |  +12-11-10--9--8--7-------6--5--4--3--2--1-+
    Pip count  X: 144  O: 152 X-O: 0-0
    Cube: 1
    X to play 53


    Ahead in the race and with the better board, Magriel's criteria point to
    safe. So I'll make the five point and safety the blot on the eleven.
    Clean up the blots, make a valuable point... should be a reasonable play.

    OTOH, escaping with tempo has a lot of merit. Since I hate playing ace
    point games, that looks attractive.

    But since I'm not sure, I'll make the five point. Five blots strewn all
    over the board seems a bit excessive, even with her on the bar.

    11/6 8/5.

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  • From Timothy Chow@21:1/5 to ah...Clem on Sat Jan 21 09:15:46 2023
    On 1/20/2023 1:44 PM, ah...Clem wrote:
    Ahead in the race and with the better board, Magriel's criteria point to safe. So I'll make the five point and safety the blot on the eleven.

    Magriel doesn't mention the race. He does mention board strength,
    but having the better board points to a bold play.

    ---
    Tim Chow

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  • From Timothy Chow@21:1/5 to All on Sun Jan 22 08:43:48 2023
    XGID=-B-BbAB-A--AcD--ad-e----B-:0:0:1:53:0:0:0:0:10

    Score is X:0 O:0. Unlimited Game
    +13-14-15-16-17-18------19-20-21-22-23-24-+
    | X O O | | O X |
    | X O | | O X |
    | X O | | O |
    | X O | | O |
    | | | O |
    | |BAR| |
    | | | |
    | | | |
    | O | | |
    | O | | X O X X |
    | O X X | | X X O X X |
    +12-11-10--9--8--7-------6--5--4--3--2--1-+
    Pip count X: 144 O: 152 X-O: 0-0
    Cube: 1
    X to play 53

    While it's true that X can't really blitz O, because O has an advanced
    anchor, many factors point to an attacking plan. X has the stronger
    board, and his checkers behind O's anchor aren't doing much unless X
    hits. O has many productive point-making rolls if she is allowed to
    use her full roll, and hitting interferes with that. Also, when your
    opponent has an advanced anchor and you're still on the 24pt, you are
    usually looking to split.

    No variant this time because I wasn't able to find any small
    modification that favors not hitting.

    1. Rollout¹ 24/16* eq:+0.039
    Player: 51.23% (G:15.58% B:0.36%)
    Opponent: 48.77% (G:15.23% B:1.08%)
    Confidence: ±0.015 (+0.024..+0.054) - [100.0%]

    2. Rollout¹ 13/5 eq:-0.117 (-0.156)
    Player: 47.30% (G:12.11% B:0.27%)
    Opponent: 52.70% (G:13.66% B:0.51%)
    Confidence: ±0.013 (-0.129..-0.104) - [0.0%]

    3. Rollout¹ 11/6 8/5 eq:-0.125 (-0.163)
    Player: 47.14% (G:11.26% B:0.27%)
    Opponent: 52.86% (G:13.63% B:0.46%)
    Confidence: ±0.012 (-0.137..-0.112) - [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

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  • From Benjamin Friesen@21:1/5 to Tim Chow on Sun Jan 22 11:21:26 2023
    On Sunday, January 22, 2023 at 8:43:49 AM UTC-5, Tim Chow wrote:
    XGID=-B-BbAB-A--AcD--ad-e----B-:0:0:1:53:0:0:0:0:10

    Score is X:0 O:0. Unlimited Game
    +13-14-15-16-17-18------19-20-21-22-23-24-+
    | X O O | | O X |
    | X O | | O X |
    | X O | | O |
    | X O | | O |
    | | | O |
    | |BAR| |
    | | | |
    | | | |
    | O | | |
    | O | | X O X X |
    | O X X | | X X O X X |
    +12-11-10--9--8--7-------6--5--4--3--2--1-+
    Pip count X: 144 O: 152 X-O: 0-0
    Cube: 1
    X to play 53
    While it's true that X can't really blitz O, because O has an advanced anchor, many factors point to an attacking plan. X has the stronger
    board, and his checkers behind O's anchor aren't doing much unless X
    hits. O has many productive point-making rolls if she is allowed to
    use her full roll, and hitting interferes with that. Also, when your opponent has an advanced anchor and you're still on the 24pt, you are usually looking to split.

    No variant this time because I wasn't able to find any small
    modification that favors not hitting.

    1. Rollout¹ 24/16* eq:+0.039
    Player: 51.23% (G:15.58% B:0.36%)
    Opponent: 48.77% (G:15.23% B:1.08%)
    Confidence: ±0.015 (+0.024..+0.054) - [100.0%]

    2. Rollout¹ 13/5 eq:-0.117 (-0.156)
    Player: 47.30% (G:12.11% B:0.27%)
    Opponent: 52.70% (G:13.66% B:0.51%)
    Confidence: ±0.013 (-0.129..-0.104) - [0.0%]

    3. Rollout¹ 11/6 8/5 eq:-0.125 (-0.163)
    Player: 47.14% (G:11.26% B:0.27%)
    Opponent: 52.86% (G:13.63% B:0.46%)
    Confidence: ±0.012 (-0.137..-0.112) - [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

    Move the opp's outfield blot from his 9pt to his 10pt and make the roll [63] or to his 11pt and make the roll [64].

    Stick

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