• Dire straits

    From Timothy Chow@21:1/5 to All on Tue Jul 25 08:58:34 2023
    XGID=--B-CCBaC-----------ccecB-:1:1:1:63:0:0:0:0:10

    Score is X:0 O:0. Unlimited Game
    +13-14-15-16-17-18------19-20-21-22-23-24-+
    | | | O O O O X |
    | | | O O O O X |
    | | | O O O O |
    | | | O |
    | | | O |
    | |BAR| |
    | | | |
    | | | |
    | X | | X X | +---+
    | X | | X X X X | | 2 |
    | X O | | X X X X | +---+
    +12-11-10--9--8--7-------6--5--4--3--2--1-+
    Pip count X: 115 O: 66 X-O: 0-0
    Cube: 2, X own cube
    X to play 63

    ---
    Tim Chow

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  • From ah...Clem@21:1/5 to Timothy Chow on Tue Jul 25 12:31:06 2023
    On 7/25/2023 8:58 AM, Timothy Chow wrote:
    XGID=--B-CCBaC-----------ccecB-:1:1:1:63:0:0:0:0:10

    Score is X:0 O:0. Unlimited Game  +13-14-15-16-17-18------19-20-21-22-23-24-+  |                  |   |    O  O  O  O  X |  |                  |   |    O  O  O  O  X |  |                  |   |    O  O  O  O    |  |                  |   |          O       |
     |                  |   |          O       |
     |                  |BAR|                  |
     |                  |   |                  |
     |                  |   |                  |
     |             X    |   |    X  X          | +---+
     |             X    |   | X  X  X     X    | | 2 |  |             X  O |   | X  X  X     X    | +---+  +12-11-10--9--8--7-------6--5--4--3--2--1-+
    Pip count  X: 115  O: 66 X-O: 0-0
    Cube: 2, X own cube
    X to play 63

    If X leaves the ace, an avalanche of checkers will rain down on the
    remaining checker. That leaves 8/2 for the six, after which slotting the
    ace seems more productive than stacking the deuce.

    8/2 4/1 seems the logical choice, so by QF it must be wrong. But I'll
    play that anyway since I try not to do QF.

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  • From Renan Moritz@21:1/5 to peps...@gmail.com on Tue Jul 25 10:59:55 2023
    On Tuesday, July 25, 2023 at 2:24:30 PM UTC-3, peps...@gmail.com wrote:
    On Tuesday, July 25, 2023 at 1:58:37 PM UTC+1, Timothy Chow wrote:
    XGID=--B-CCBaC-----------ccecB-:1:1:1:63:0:0:0:0:10

    Score is X:0 O:0. Unlimited Game +13-14-15-16-17-18------19-20-21-22-23-24-+
    | | | O O O O X |
    | | | O O O O X |
    | | | O O O O |
    | | | O |
    | | | O |
    | |BAR| |
    | | | |
    | | | |
    | X | | X X | +---+
    | X | | X X X X | | 2 |
    | X O | | X X X X | +---+
    +12-11-10--9--8--7-------6--5--4--3--2--1-+
    Pip count X: 115 O: 66 X-O: 0-0
    Cube: 2, X own cube
    X to play 63
    I'm Walting this one.
    As soon as I've opined, I'll observe whether Ah..Clem
    thinks my suggestion is as useful as a film recommendation
    by Arnold Schwarzenegger.

    I think we need to escape a back checker to try to challenge the checker on our 7 point. The opponent will admittedly have a few pointing numbers but is still an underdog to do so as this would require a roll with no 5 or 6.

    So 24/18. If we go all the way to 15, we diversify for the opponent.
    Their small rolls will point on us and their large rolls will move past us. So definitely stop at 18. But how about the 3?
    We don't want to make the ace point so don't slot it. 8/5 seems to preserve the forward structure as much as we can.
    24/18 8/5 is my play. Now I'll look at what the wiser man says.

    Hmmm, he sees it differently and seems to see my play as an unusual QF play. I thought my play was the normal way.

    Autres temps, autres moeurs as Stick would say if he was still studying French.

    Paul

    Quiz Factor is an annoying thing that makes me believe running from the 24 is the correct choice...
    But I just cannot believe it. My choice: 24/18, 3/1

    [ From this position on for the next 10 positions I will be checking XG results against GNU for no other reason than my curiosity to do so]

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  • From pepstein5@gmail.com@21:1/5 to Timothy Chow on Tue Jul 25 10:24:28 2023
    On Tuesday, July 25, 2023 at 1:58:37 PM UTC+1, Timothy Chow wrote:
    XGID=--B-CCBaC-----------ccecB-:1:1:1:63:0:0:0:0:10

    Score is X:0 O:0. Unlimited Game
    +13-14-15-16-17-18------19-20-21-22-23-24-+
    | | | O O O O X |
    | | | O O O O X |
    | | | O O O O |
    | | | O |
    | | | O |
    | |BAR| |
    | | | |
    | | | |
    | X | | X X | +---+
    | X | | X X X X | | 2 |
    | X O | | X X X X | +---+
    +12-11-10--9--8--7-------6--5--4--3--2--1-+
    Pip count X: 115 O: 66 X-O: 0-0
    Cube: 2, X own cube
    X to play 63

    I'm Walting this one.
    As soon as I've opined, I'll observe whether Ah..Clem
    thinks my suggestion is as useful as a film recommendation
    by Arnold Schwarzenegger.

    I think we need to escape a back checker to try to challenge the checker on
    our 7 point. The opponent will admittedly have a few pointing numbers but is still an underdog to do so as this would require a roll with no 5 or 6.

    So 24/18. If we go all the way to 15, we diversify for the opponent.
    Their small rolls will point on us and their large rolls will move past us.
    So definitely stop at 18. But how about the 3?
    We don't want to make the ace point so don't slot it. 8/5 seems to preserve the forward structure as much as we can.
    24/18 8/5 is my play. Now I'll look at what the wiser man says.

    Hmmm, he sees it differently and seems to see my play as an unusual QF play.
    I thought my play was the normal way.

    Autres temps, autres moeurs as Stick would say if he was still studying French.

    Paul

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  • From ah....Clem@21:1/5 to Renan Moritz on Wed Jul 26 19:48:03 2023
    On 7/25/2023 1:59 PM, Renan Moritz wrote:


    [ From this position on for the next 10 positions I will be checking XG results against GNU for no other reason than my curiosity to do so]

    The usual convention is for the user who initiates the thread to post a
    rollout in 24 to 48 hours. Of course, there's nothing stopping anyone
    from consulting a bot prior to that, or even before posting their opinion.

    My approach is to do my own work by Walting (i.e. not looking at other responses prior to posting). Sometimes I peek at XGR++ prior to the
    "answer" being posted. YMMV.


    --
    Ah....Clem
    The future is fun, the future is fair.

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  • From Timothy Chow@21:1/5 to All on Thu Jul 27 07:40:42 2023
    XGID=--B-CCBaC-----------ccecB-:1:1:1:63:0:0:0:0:10

    Score is X:0 O:0. Unlimited Game
    +13-14-15-16-17-18------19-20-21-22-23-24-+
    | | | O O O O X |
    | | | O O O O X |
    | | | O O O O |
    | | | O |
    | | | O |
    | |BAR| |
    | | | |
    | | | |
    | X | | X X | +---+
    | X | | X X X X | | 2 |
    | X O | | X X X X | +---+
    +12-11-10--9--8--7-------6--5--4--3--2--1-+
    Pip count X: 115 O: 66 X-O: 0-0
    Cube: 2, X own cube
    X to play 63

    Congratulations to Paul, who found the bot play. X's best chances
    of winning lie in catching O's straggler. But he has to weigh that
    against the risk of getting attacked. According to XG, splitting
    is hugely correct here, despite the increased risk of losing a
    gammon.

    In the variant, I have given O a five-point board. According to XG,
    in the variant, splitting is still the right idea at DMP, but it
    loses too many gammons for money.

    1. Rollout¹ 24/18 8/5 eq:-0.578
    Player: 23.14% (G:2.12% B:0.06%)
    Opponent: 76.86% (G:14.73% B:0.15%)
    Confidence: ±0.005 (-0.582..-0.573) - [100.0%]

    2. Rollout¹ 24/18 5/2 eq:-0.637 (-0.059)
    Player: 21.88% (G:1.74% B:0.05%)
    Opponent: 78.12% (G:17.64% B:0.16%)
    Confidence: ±0.004 (-0.641..-0.632) - [0.0%]

    3. Rollout¹ 24/18 4/1 eq:-0.652 (-0.075)
    Player: 21.53% (G:2.11% B:0.06%)
    Opponent: 78.47% (G:18.49% B:0.20%)
    Confidence: ±0.005 (-0.657..-0.648) - [0.0%]

    4. Rollout¹ 24/15 eq:-0.705 (-0.127)
    Player: 18.18% (G:0.90% B:0.03%)
    Opponent: 81.82% (G:15.24% B:0.19%)
    Confidence: ±0.004 (-0.709..-0.701) - [0.0%]

    5. Rollout¹ 8/2 4/1 eq:-0.779 (-0.202)
    Player: 13.72% (G:0.45% B:0.01%)
    Opponent: 86.28% (G:10.65% B:0.26%)
    Confidence: ±0.004 (-0.783..-0.776) - [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=--B-CCBaC----------bccccB-:1:1:1:63:0:0:0:0:10

    Score is X:0 O:0. Unlimited Game
    +13-14-15-16-17-18------19-20-21-22-23-24-+
    | | | O O O O O X |
    | | | O O O O O X |
    | | | O O O O |
    | | | |
    | | | |
    | |BAR| |
    | | | |
    | | | |
    | X | | X X | +---+
    | X | | X X X X | | 2 |
    | X O | | X X X X | +---+
    +12-11-10--9--8--7-------6--5--4--3--2--1-+
    Pip count X: 115 O: 72 X-O: 0-0
    Cube: 2, X own cube
    X to play 63

    1. Rollout¹ 8/2 4/1 eq:-0.882
    Player: 10.82% (G:0.27% B:0.01%)
    Opponent: 89.18% (G:13.70% B:0.41%)
    Confidence: ±0.004 (-0.886..-0.878) - [100.0%]

    2. Rollout¹ 8/2 5/2 eq:-0.902 (-0.020)
    Player: 9.80% (G:0.27% B:0.01%)
    Opponent: 90.20% (G:13.45% B:0.39%)
    Confidence: ±0.003 (-0.905..-0.899) - [0.0%]

    3. Rollout¹ 8/2 6/3 eq:-0.929 (-0.047)
    Player: 9.02% (G:0.11% B:0.00%)
    Opponent: 90.98% (G:14.08% B:0.45%)
    Confidence: ±0.004 (-0.933..-0.926) - [0.0%]

    4. Rollout¹ 8/5 8/2 eq:-0.941 (-0.059)
    Player: 11.63% (G:0.21% B:0.01%)
    Opponent: 88.37% (G:20.76% B:1.37%)
    Confidence: ±0.004 (-0.945..-0.937) - [0.0%]

    5. Rollout¹ 24/18 8/5 eq:-1.008 (-0.125)
    Player: 13.17% (G:1.89% B:0.06%)
    Opponent: 86.83% (G:33.92% B:0.42%)
    Confidence: ±0.004 (-1.012..-1.003) - [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, DMP
    ------------

    XGID=--B-CCBaC----------bccccB-:0:0:1:63:0:0:0:1:10

    Score is X:0 O:0 1 pt.(s) match.
    +13-14-15-16-17-18------19-20-21-22-23-24-+
    | | | O O O O O X |
    | | | O O O O O X |
    | | | O O O O |
    | | | |
    | | | |
    | |BAR| |
    | | | |
    | | | |
    | X | | X X |
    | X | | X X X X |
    | X O | | X X X X |
    +12-11-10--9--8--7-------6--5--4--3--2--1-+
    Pip count X: 115 O: 72 X-O: 0-0/1
    Cube: 1
    X to play 63

    1. Rollout¹ 24/18 8/5 eq:-0.760
    Player: 12.00% (G:1.27% B:0.04%)
    Opponent: 88.00% (G:23.04% B:0.35%)
    Confidence: ±0.002 (-0.763..-0.758) - [100.0%]

    2. Rollout¹ 24/18 5/2 eq:-0.780 (-0.020)
    Player: 10.99% (G:0.90% B:0.01%)
    Opponent: 89.01% (G:26.71% B:0.41%)
    Confidence: ±0.002 (-0.782..-0.778) - [0.0%]

    3. Rollout¹ 24/18 4/1 eq:-0.785 (-0.025)
    Player: 10.77% (G:1.25% B:0.04%)
    Opponent: 89.23% (G:28.55% B:0.39%)
    Confidence: ±0.002 (-0.787..-0.782) - [0.0%]

    4. Rollout¹ 8/2 4/1 eq:-0.786 (-0.026)
    Player: 10.70% (G:0.21% B:0.02%)
    Opponent: 89.30% (G:16.19% B:1.42%)
    Confidence: ±0.002 (-0.788..-0.784) - [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, MET: Kazaross XG2

    ---
    Tim Chow

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