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interests / rec.games.backgammon / Holding game cube action?

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* Holding game cube action?BlueDice
+- Re: Holding game cube action?Timothy Chow
`- Re: Holding game cube action?BlueDice

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Holding game cube action?

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Subject: Holding game cube action?
From: bluedice...@gmail.com (BlueDice)
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 by: BlueDice - Thu, 5 May 2022 12:47 UTC

XGID=--BA--DbCb-C-B---dabbb----:0:0:1:00:0:0:0:0:10
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 O | | O O O |
| X O | | O O O |
| O | | |
| O | | |
| | | |
| |BAR| |
| | | |
| | | X |
| X X | | X |
| X O X O | | X X |
| X O X O | | X X X |
+12-11-10--9--8--7-------6--5--4--3--2--1-+
Pip count X: 114 O: 137 X-O: 0-0
Cube: 1
X on roll, cube action
--
BD

Re: Holding game cube action?

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From: tchow12...@yahoo.com (Timothy Chow)
Newsgroups: rec.games.backgammon
Subject: Re: Holding game cube action?
Date: Fri, 6 May 2022 08:46:53 -0400
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 by: Timothy Chow - Fri, 6 May 2022 12:46 UTC

On 5/5/2022 8:47 AM, BlueDice wrote:
> XGID=--BA--DbCb-C-B---dabbb----:0:0:1:00:0:0:0:0:10
> 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 O | | O O O |
> | X O | | O O O |
> | O | | |
> | O | | |
> | | | |
> | |BAR| |
> | | | |
> | | | X |
> | X X | | X |
> | X O X O | | X X |
> | X O X O | | X X X |
> +12-11-10--9--8--7-------6--5--4--3--2--1-+
> Pip count X: 114 O: 137 X-O: 0-0
> Cube: 1
> X on roll, cube action

Having two "anchors" that are just two apart is usually not
good for the holder. Here, for example, O will probably want
to run off her 16pt soon, but will risk exposing a double shot.
With a 23-pip deficit, my first instinct is to pass. But O's
structure is considerably better than X's, and X may have trouble
clearing his remaining outfield points. If O exposes a blot and
X hits it, O may still be able to hit back and win. The race
deficit is slightly less than it might seem at first because of
X's wastage. I guess this is D/T.

---
Tim Chow

Re: Holding game cube action?

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Newsgroups: rec.games.backgammon
Date: Wed, 11 May 2022 02:46:06 -0700 (PDT)
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Subject: Re: Holding game cube action?
From: bluedice...@gmail.com (BlueDice)
Injection-Date: Wed, 11 May 2022 09:46:06 +0000
Content-Type: text/plain; charset="UTF-8"
 by: BlueDice - Wed, 11 May 2022 09:46 UTC

On Thursday, May 5, 2022 at 1:47:12 PM UTC+1, BlueDice wrote:
> XGID=--BA--DbCb-C-B---dabbb----:0:0:1:00:0:0:0:0:10
> 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 O | | O O O |
> | X O | | O O O |
> | O | | |
> | O | | |
> | | | |
> | |BAR| |
> | | | |
> | | | X |
> | X X | | X |
> | X O X O | | X X |
> | X O X O | | X X X |
> +12-11-10--9--8--7-------6--5--4--3--2--1-+
> Pip count X: 114 O: 137 X-O: 0-0
> Cube: 1
> X on roll, cube action
> --
> BD

XGR++ result

Not a huge double

Analyzed in XG Roller++
Player Winning Chances: 70.93% (G:4.24% B:0.05%)
Opponent Winning Chances: 29.07% (G:2.69% B:0.06%)

Cubeless Equities: No Double=+0.434, Double=+0.895

Cubeful Equities:
No double: +0.641 (-0.054)
Double/Take: +0.694
Double/Pass: +1.000 (+0.306)

Best Cube action: Double / Take

eXtreme Gammon Version: 2.19.211.pre-release

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