• In a post-hit endgame, should Tim read Bob Wachtel's books before answe

    From pepstein5@gmail.com@21:1/5 to All on Wed Oct 20 10:51:47 2021
    XGID=-ECB------a-c----babbbb--A:1:-1:-1:00:4:0:3:0:10
    X:eXtremeGammon O:Daniel

    Score is X:0 O:4. Unlimited Game, Jacoby Beaver
    +13-14-15-16-17-18------19-20-21-22-23-24-+
    | X X | | O O O |
    | X | | O O O |
    | X | | O O |
    | | | O |
    | | | O |
    | |BAR| |
    | | O | |
    | | | |
    | | | | +---+
    | X | | X X X X | | 2 |
    | X X | | X X X X | +---+
    +12-11-10--9--8--7-------6--5--4--3--2--1-+
    Pip count X: 113 O: 42 X-O: 0-4
    Cube: 2, X own cube
    X on roll, cube action

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  • From Timothy Chow@21:1/5 to peps...@gmail.com on Wed Oct 20 21:51:47 2021
    On 10/20/2021 1:51 PM, peps...@gmail.com wrote:
    XGID=-ECB------a-c----babbbb--A:1:-1:-1:00:4:0:3:0:10
    X:eXtremeGammon O:Daniel

    Score is X:0 O:4. Unlimited Game, Jacoby Beaver
    +13-14-15-16-17-18------19-20-21-22-23-24-+
    | X X | | O O O |
    | X | | O O O |
    | X | | O O |
    | | | O |
    | | | O |
    | |BAR| |
    | | O | |
    | | | |
    | | | | +---+
    | X | | X X X X | | 2 |
    | X X | | X X X X | +---+
    +12-11-10--9--8--7-------6--5--4--3--2--1-+
    Pip count X: 113 O: 42 X-O: 0-4
    Cube: 2, X own cube
    X on roll, cube action

    I don't think there's anything like this in Wachtel's books.
    He focuses on positions where O has a lot more checkers off.
    This one looks like D/P to me. If O were closed out then it
    would be a clear D/P. O isn't quite closed out but she doesn't
    have a whole lot of slime vig.

    A more apropos title might be, "should we wait until XG3 is
    out before posting a rollout of this position?"

    ---
    Tim Chow

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  • From pepstein5@gmail.com@21:1/5 to Tim Chow on Thu Oct 21 02:07:23 2021
    On Thursday, October 21, 2021 at 2:51:51 AM UTC+1, Tim Chow wrote:
    On 10/20/2021 1:51 PM, peps...@gmail.com wrote:
    XGID=-ECB------a-c----babbbb--A:1:-1:-1:00:4:0:3:0:10
    X:eXtremeGammon O:Daniel

    Score is X:0 O:4. Unlimited Game, Jacoby Beaver +13-14-15-16-17-18------19-20-21-22-23-24-+
    | X X | | O O O |
    | X | | O O O |
    | X | | O O |
    | | | O |
    | | | O |
    | |BAR| |
    | | O | |
    | | | |
    | | | | +---+
    | X | | X X X X | | 2 |
    | X X | | X X X X | +---+
    +12-11-10--9--8--7-------6--5--4--3--2--1-+
    Pip count X: 113 O: 42 X-O: 0-4
    Cube: 2, X own cube
    X on roll, cube action
    I don't think there's anything like this in Wachtel's books.
    He focuses on positions where O has a lot more checkers off.
    This one looks like D/P to me. If O were closed out then it
    would be a clear D/P. O isn't quite closed out but she doesn't
    have a whole lot of slime vig.

    A more apropos title might be, "should we wait until XG3 is
    out before posting a rollout of this position?"

    Yes, I think you're basically right. It rolled out to a 1.044 pass if
    I remember correctly, which is broadly in line with your thoughts.
    However, when XG gave its analysis before I asked for the rollout,
    the verdict was ultra-marginal -- a 1.008 pass.
    On that basis, XG was fine with my take although it was a lazy
    steamish take on my part, which was partially motivated by a
    refusal to give up. Having said that, I would certainly not take something
    I knew was a pass -- I just had a psychological bias towards taking.
    The fact that XG's initial analysis shows a 1.008 pass means the take might
    be reasonable, even at the highest levels of human play.


    Paul

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  • From MK@21:1/5 to Tim Chow on Fri Oct 22 02:10:45 2021
    On October 20, 2021 at 7:51:51 PM UTC-6, Tim Chow wrote:

    A more apropos title might be, "should we wait until XG3 is
    out before posting a rollout of this position?"

    Already much before 2017, I had predicted that there would
    never be XG3 and in this old post I had said "so far, so good".

    https://groups.google.com/g/rec.games.backgammon/c/t0xygKcfN54/m/A3dPELZ-AQAJ

    Four years later, I can still say "so far, so good"...

    You may consider waiting for Godot, instead. ;)

    MK

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  • From Timothy Chow@21:1/5 to All on Fri Oct 22 22:13:40 2021
    On 10/22/2021 5:10 AM, MK wrote:
    On October 20, 2021 at 7:51:51 PM UTC-6, Tim Chow wrote:

    A more apropos title might be, "should we wait until XG3 is
    out before posting a rollout of this position?"

    Already much before 2017, I had predicted that there would
    never be XG3 and in this old post I had said "so far, so good".

    https://groups.google.com/g/rec.games.backgammon/c/t0xygKcfN54/m/A3dPELZ-AQAJ

    Four years later, I can still say "so far, so good"...

    You may consider waiting for Godot, instead. ;)

    Or worse, for "Peerless."

    ---
    Tim Chow

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  • From MK@21:1/5 to Tim Chow on Fri Oct 22 20:30:44 2021
    On October 22, 2021 at 8:13:42 PM UTC-6, Tim Chow wrote:

    On 10/22/2021 5:10 AM, MK wrote:

    Already much before 2017, I had predicted that there would
    never be XG3 and in this old post I had said "so far, so good".
    Four years later, I can still say "so far, so good"...
    You may consider waiting for Godot, instead. ;)

    Or worse, for "Peerless."

    Why how worse? Less than 50% 49% of the time??

    MK

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  • From pepstein5@gmail.com@21:1/5 to Tim Chow on Sat Oct 23 04:31:44 2021
    On Saturday, October 23, 2021 at 3:13:42 AM UTC+1, Tim Chow wrote:
    On 10/22/2021 5:10 AM, MK wrote:
    On October 20, 2021 at 7:51:51 PM UTC-6, Tim Chow wrote:

    A more apropos title might be, "should we wait until XG3 is
    out before posting a rollout of this position?"

    Already much before 2017, I had predicted that there would
    never be XG3 and in this old post I had said "so far, so good".

    https://groups.google.com/g/rec.games.backgammon/c/t0xygKcfN54/m/A3dPELZ-AQAJ

    Four years later, I can still say "so far, so good"...

    You may consider waiting for Godot, instead. ;)
    Or worse, for "Peerless."

    I am unable to understand this reply, being unfamiliar with the
    reference -- "waiting for Peerless" (or whatever reference you are making).
    I'd appreciate it if you could give a reference, or make further clarifications to
    explain your point.
    [Here, I am making the simplifying assumption that improved comprehension
    is a good thing.]

    Paul

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  • From Timothy Chow@21:1/5 to peps...@gmail.com on Sat Oct 23 22:16:47 2021
    On 10/23/2021 7:31 AM, peps...@gmail.com wrote:

    I am unable to understand this reply, being unfamiliar with the
    reference -- "waiting for Peerless" (or whatever reference you are making).

    It's a reference to this short piece of fiction:

    https://groups.google.com/g/rec.games.backgammon/c/2zco2nEdC1k/m/86LQ6Fr3BAAJ

    ---
    Tim Chow

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  • From pepstein5@gmail.com@21:1/5 to Tim Chow on Sun Oct 24 03:18:02 2021
    On Sunday, October 24, 2021 at 3:16:51 AM UTC+1, Tim Chow wrote:
    On 10/23/2021 7:31 AM, peps...@gmail.com wrote:

    I am unable to understand this reply, being unfamiliar with the
    reference -- "waiting for Peerless" (or whatever reference you are making).
    It's a reference to this short piece of fiction:

    https://groups.google.com/g/rec.games.backgammon/c/2zco2nEdC1k/m/86LQ6Fr3BAAJ

    Ok, so I have good news and bad news.
    The bad news is: I wasted time google-searching many pages for phrases like "waiting for Peerless"
    assuming it was a classic reference.
    The good news is: The time I wasted was somewhat small and certainly not large enough to deter me
    from my goals for that day (approx 5 to 10 minutes).

    Paul

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  • From MK@21:1/5 to peps...@gmail.com on Mon Oct 25 03:36:40 2021
    On October 24, 2021 at 4:18:03 AM UTC-6, peps...@gmail.com wrote:

    The bad news is: I wasted time google-searching many
    pages for phrases like "waiting for Peerless" assuming
    it was a classic reference.

    Everything classic was once new...

    "Peerless" is a misspelling of "PR-less". Try Googling that.

    The good news is: The time I wasted was somewhat small
    and certainly not large enough to deter me from my goals
    for that day (approx 5 to 10 minutes).

    Glad you didn't read my "fiction" that Chow was referring to.
    That would have taken another 5 to 10 minutes of your life...

    MK

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  • From ah...Clem@21:1/5 to peps...@gmail.com on Tue Oct 26 18:07:57 2021
    On 10/20/2021 1:51 PM, peps...@gmail.com wrote:
    XGID=-ECB------a-c----babbbb--A:1:-1:-1:00:4:0:3:0:10
    X:eXtremeGammon O:Daniel

    Score is X:0 O:4. Unlimited Game, Jacoby Beaver
    +13-14-15-16-17-18------19-20-21-22-23-24-+
    | X X | | O O O |
    | X | | O O O |
    | X | | O O |
    | | | O |
    | | | O |
    | |BAR| |
    | | O | |
    | | | |
    | | | | +---+
    | X | | X X X X | | 2 |
    | X X | | X X X X | +---+
    +12-11-10--9--8--7-------6--5--4--3--2--1-+
    Pip count X: 113 O: 42 X-O: 0-4
    Cube: 2, X own cube
    X on roll, cube action

    X makes the seven point with any six or ace or 8 . That's 29 rolls if I
    counted right. O has four checkers off and the reference position of
    closed out on the board with four off is about 20%. Now, O is not
    closed out, but she also has some misses in the bearoff, but it would
    seem to me that the escaping chances plus the ~20% chances after being
    closed out would be enough to take.

    Maybe the possibility of X picking up a second checker tips it into pass territory, but I'd take this. Without liking it very much.

    D/T.

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