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interests / rec.games.backgammon / Rollout: Blitzing at gammon go

SubjectAuthor
* Blitzing at gammon goTimothy Chow
+* Re: Blitzing at gammon goah...Clem
|+- Re: Blitzing at gammon gopeps...@gmail.com
|`- Re: Blitzing at gammon gopeps...@gmail.com
`- Rollout: Blitzing at gammon goTimothy Chow

1
Blitzing at gammon go

<teqdbb$26q16$2@dont-email.me>

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From: tchow12...@yahoo.com (Timothy Chow)
Newsgroups: rec.games.backgammon
Subject: Blitzing at gammon go
Date: Thu, 1 Sep 2022 09:50:37 -0400
Organization: A noiseless patient Spider
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 by: Timothy Chow - Thu, 1 Sep 2022 13:50 UTC

XGID=aBBB-BBA-BA-b----bdfA-----:0:0:1:43:0:1:1:2:10

X:Player 1 O:Player 2
Score is X:0 O:1 2 pt.(s) match.
+13-14-15-16-17-18------19-20-21-22-23-24-+
| O O | | O X |
| O O | | O |
| O | | O |
| O | | O |
| | | 6 |
| |BAR| |
| | O | |
| | | |
| | | |
| O X | | X X X X X |
| O X X X | | X X X X X |
+12-11-10--9--8--7-------6--5--4--3--2--1-+
Pip count X: 89 O: 131 X-O: 0-1/2 Crawford
Cube: 1
X to play 43

---
Tim Chow

Re: Blitzing at gammon go

<teqdsa$26rv1$1@dont-email.me>

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From: ah_c...@ymail.com (ah...Clem)
Newsgroups: rec.games.backgammon
Subject: Re: Blitzing at gammon go
Date: Thu, 1 Sep 2022 09:59:35 -0400
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 by: ah...Clem - Thu, 1 Sep 2022 13:59 UTC

On 9/1/2022 9:50 AM, Timothy Chow wrote:
> XGID=aBBB-BBA-BA-b----bdfA-----:0:0:1:43:0:1:1:2:10
>
> X:Player 1   O:Player 2
> Score is X:0 O:1 2 pt.(s) match.
>  +13-14-15-16-17-18------19-20-21-22-23-24-+
>  |             O  O |   | O  X             |
>  |             O  O |   | O                |
>  |                O |   | O                |
>  |                O |   | O                |
>  |                  |   | 6                |
>  |                  |BAR|                  |
>  |                  | O |                  |
>  |                  |   |                  |
>  |                  |   |                  |
>  | O        X       |   | X  X     X  X  X |
>  | O     X  X     X |   | X  X     X  X  X |
>  +12-11-10--9--8--7-------6--5--4--3--2--1-+
> Pip count  X: 89  O: 131 X-O: 0-1/2 Crawford
> Cube: 1
> X to play 43

The aggressive play is to slot the four point and break the nine point
which gives a triple shot (> 75%) to cover the blot vs a less than 1/3
to enter and hit.

There's an adage that the safer play often wins more gammons because it
wins more games. That might be true here, but I'll make the aggressive
play. 9/6 7/4.

Re: Blitzing at gammon go

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Subject: Re: Blitzing at gammon go
From: pepste...@gmail.com (peps...@gmail.com)
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 by: peps...@gmail.com - Thu, 1 Sep 2022 14:14 UTC

On Thursday, September 1, 2022 at 2:59:39 PM UTC+1, ah...Clem wrote:
>...
> There's an adage that the safer play often wins more gammons because it
> wins more games.
....

That's (a better form of) Stick's DMP rule.

Paul

Re: Blitzing at gammon go

<d34a0ae6-3743-46d7-995b-b0f7ff94c4f5n@googlegroups.com>

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Subject: Re: Blitzing at gammon go
From: pepste...@gmail.com (peps...@gmail.com)
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 by: peps...@gmail.com - Thu, 1 Sep 2022 14:19 UTC

On Thursday, September 1, 2022 at 2:59:39 PM UTC+1, ah...Clem wrote:
> On 9/1/2022 9:50 AM, Timothy Chow wrote:
> > XGID=aBBB-BBA-BA-b----bdfA-----:0:0:1:43:0:1:1:2:10
> >
> > X:Player 1 O:Player 2
> > Score is X:0 O:1 2 pt.(s) match.
> > +13-14-15-16-17-18------19-20-21-22-23-24-+
> > | O O | | O X |
> > | O O | | O |
> > | O | | O |
> > | O | | O |
> > | | | 6 |
> > | |BAR| |
> > | | O | |
> > | | | |
> > | | | |
> > | O X | | X X X X X |
> > | O X X X | | X X X X X |
> > +12-11-10--9--8--7-------6--5--4--3--2--1-+
> > Pip count X: 89 O: 131 X-O: 0-1/2 Crawford
> > Cube: 1
> > X to play 43
> The aggressive play is to slot the four point and break the nine point
> which gives a triple shot (> 75%) to cover the blot vs a less than 1/3
> to enter and hit.
>
> There's an adage that the safer play often wins more gammons because it
> wins more games. That might be true here, but I'll make the aggressive
> play. 9/6 7/4.
Ok. I'll play that too. The opponent's board "Board? What board?" is
a large consideration for our bold play.

Paul

Rollout: Blitzing at gammon go

<tevlik$2t0el$1@dont-email.me>

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From: tchow12...@yahoo.com (Timothy Chow)
Newsgroups: rec.games.backgammon
Subject: Rollout: Blitzing at gammon go
Date: Sat, 3 Sep 2022 09:41:38 -0400
Organization: A noiseless patient Spider
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 by: Timothy Chow - Sat, 3 Sep 2022 13:41 UTC

XGID=aBBB-BBA-BA-b----bdfA-----:0:0:1:43:0:1:1:2:10

X:Player 1 O:Player 2
Score is X:0 O:1 2 pt.(s) match.
+13-14-15-16-17-18------19-20-21-22-23-24-+
| O O | | O X |
| O O | | O |
| O | | O |
| O | | O |
| | | 6 |
| |BAR| |
| | O | |
| | | |
| | | |
| O X | | X X X X X |
| O X X X | | X X X X X |
+12-11-10--9--8--7-------6--5--4--3--2--1-+
Pip count X: 89 O: 131 X-O: 0-1/2 Crawford
Cube: 1
X to play 43

XG doesn't think slotting is best for money (though it's close), but
it does think slotting is mandatory at gammon go.

1. Rollout¹ 20/16 7/4 eq:+1.983
Player: 87.15% (G:62.00% B:0.60%)
Opponent: 12.85% (G:1.66% B:0.16%)
Confidence: ±0.009 (+1.974..+1.993) - [100.0%]

2. Rollout¹ 20/16 9/6 eq:+1.896 (-0.087)
Player: 88.90% (G:55.91% B:0.47%)
Opponent: 11.10% (G:0.70% B:0.03%)
Confidence: ±0.010 (+1.886..+1.906) - [0.0%]

3. Rollout¹ 20/13 eq:+1.891 (-0.092)
Player: 89.46% (G:55.10% B:0.55%)
Opponent: 10.54% (G:0.81% B:0.11%)
Confidence: ±0.008 (+1.883..+1.899) - [0.0%]

¹ 1296 Games rolled with Variance Reduction.
Dice Seed: 271828
Moves: 3-ply, cube decisions: XG Roller

eXtreme Gammon Version: 2.19.207.pre-release, MET: Kazaross XG2

-----
Money
-----

XGID=aBBB-BBA-BA-b----bdfA-----:1:-1:1:43:0:0:0:0:10

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-+
| O O | | O X | +---+
| O O | | O | | 2 |
| O | | O | +---+
| O | | O |
| | | 6 |
| |BAR| |
| | O | |
| | | |
| | | |
| O X | | X X X X X |
| O X X X | | X X X X X |
+12-11-10--9--8--7-------6--5--4--3--2--1-+
Pip count X: 89 O: 131 X-O: 0-0
Cube: 2, O own cube
X to play 43

1. Rollout¹ 20/13 eq:+1.306
Player: 90.85% (G:53.07% B:0.16%)
Opponent: 9.15% (G:0.75% B:0.04%)
Confidence: ±0.006 (+1.300..+1.313) - [99.8%]

2. Rollout¹ 20/16 7/4 eq:+1.292 (-0.015)
Player: 87.11% (G:61.89% B:0.16%)
Opponent: 12.89% (G:1.74% B:0.09%)
Confidence: ±0.007 (+1.285..+1.299) - [0.1%]

3. Rollout¹ 20/16 9/6 eq:+1.291 (-0.016)
Player: 89.72% (G:54.72% B:0.11%)
Opponent: 10.28% (G:0.83% B:0.02%)
Confidence: ±0.006 (+1.284..+1.297) - [0.0%]

4. Rollout¹ 20/16 10/7 eq:+1.266 (-0.040)
Player: 91.41% (G:48.06% B:0.09%)
Opponent: 8.59% (G:0.68% B:0.02%)
Confidence: ±0.006 (+1.260..+1.272) - [0.0%]

¹ 1296 Games rolled with Variance Reduction.
Dice Seed: 271828
Moves: 3-ply, cube decisions: XG Roller

eXtreme Gammon Version: 2.19.207.pre-release

---
Tim Chow

1
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