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interests / rec.games.backgammon / Re: Rollout: Another 33 to play

SubjectAuthor
* Another 33 to playTimothy Chow
+- Re: Another 33 to playbadgolferman
+- Re: Another 33 to playah...Clem
`* Rollout: Another 33 to playTimothy Chow
 `- Re: Rollout: Another 33 to playbadgolferman

1
Another 33 to play

<s7sdph$obu$3@dont-email.me>

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From: tchow12...@yahoo.com (Timothy Chow)
Newsgroups: rec.games.backgammon
Subject: Another 33 to play
Date: Sun, 16 May 2021 20:36:01 -0400
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 by: Timothy Chow - Mon, 17 May 2021 00:36 UTC

XGID=--aCbBCA----bD----cdab--AA:0:0:1:33:0:0:0:0:10

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 X |
| X O | | O O |
| X O | | O |
| X | | O |
| | X | |
| |BAR| |
| | | |
| | | |
| | | X X |
| O | | X X O X |
| O X | | X X O X O |
+12-11-10--9--8--7-------6--5--4--3--2--1-+
Pip count X: 145 O: 149 X-O: 0-0
Cube: 1
X to play 33

---
Tim Chow

Re: Another 33 to play

<xn0mxznoas38ts000@nntp.aioe.org>

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From: REMOVETH...@gmail.com (badgolferman)
Newsgroups: rec.games.backgammon
Subject: Re: Another 33 to play
Date: Mon, 17 May 2021 11:28:53 +0000 (UTC)
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 by: badgolferman - Mon, 17 May 2021 11:28 UTC

Timothy Chow wrote:

>XGID=--aCbBCA----bD----cdab--AA:0:0:1:33:0:0:0:0:10
>
>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 X |
> | X O | | O O |
> | X O | | O |
> | X | | O |
> | | X | |
> | |BAR| |
> | | | |
> | | | |
> | | | X X |
> | O | | X X O X |
> | O X | | X X O X O |
> +12-11-10--9--8--7-------6--5--4--3--2--1-+
>Pip count X: 145 O: 149 X-O: 0-0
>Cube: 1
>X to play 33
>
>---
>Tim Chow

My play would probably be Bar/22, 13/7, 13/3

I'd rather leave the blot open than break up my 5-point. Even if O
hits he will have to break up his advanced anchor which would benefit
me.

Re: Another 33 to play

<s83u1d$49i$1@dont-email.me>

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From: ah_c...@ymail.com (ah...Clem)
Newsgroups: rec.games.backgammon
Subject: Re: Another 33 to play
Date: Wed, 19 May 2021 16:56:12 -0400
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 by: ah...Clem - Wed, 19 May 2021 20:56 UTC

On 5/16/2021 8:36 PM, Timothy Chow wrote:
> XGID=--aCbBCA----bD----cdab--AA:0:0:1:33:0:0:0:0:10
>
> 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        X |
>  | X              O |   | O     O          |
>  | X              O |   | O                |
>  | X                |   | O                |
>  |                  | X |                  |
>  |                  |BAR|                  |
>  |                  |   |                  |
>  |                  |   |                  |
>  |                  |   | X        X       |
>  | O                |   | X  X  O  X       |
>  | O              X |   | X  X  O  X  O    |
>  +12-11-10--9--8--7-------6--5--4--3--2--1-+
> Pip count  X: 145  O: 149 X-O: 0-0
> Cube: 1
> X to play 33

Another position where the play seems obvious but the bot must play
something else or why post it?

But I don't do QF so I'll just play bar/22 13/7 13/10. The last 33
position said it was better to lift than bring one down, but I'm not
eager to bury another checker on the three point.

Rollout: Another 33 to play

<s85qh2$7g7$1@dont-email.me>

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From: tchow12...@yahoo.com (Timothy Chow)
Newsgroups: rec.games.backgammon
Subject: Rollout: Another 33 to play
Date: Thu, 20 May 2021 10:08:33 -0400
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 by: Timothy Chow - Thu, 20 May 2021 14:08 UTC

XGID=--aCbBCA----bD----cdab--AA:0:0:1:33:0:0:0:0:10

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 X |
| X O | | O O |
| X O | | O |
| X | | O |
| | X | |
| |BAR| |
| | | |
| | | |
| | | X X |
| O | | X X O X |
| O X | | X X O X O |
+12-11-10--9--8--7-------6--5--4--3--2--1-+
Pip count X: 145 O: 149 X-O: 0-0
Cube: 1
X to play 33

Switching to a point behind the opponent's anchor is an unusual play.
Here I think it is best thought of as a tempo hit, aimed at preventing
O from covering her 5pt blot.

1. Rollout¹ Bar/22 13/10 5/2*(2) eq:-0.324
Player: 41.59% (G:15.15% B:0.53%)
Opponent: 58.41% (G:20.55% B:1.32%)
Confidence: ±0.015 (-0.339..-0.309) - [100.0%]

2. Rollout¹ Bar/22 13/10 13/7 eq:-0.385 (-0.061)
Player: 41.09% (G:14.21% B:0.77%)
Opponent: 58.91% (G:22.99% B:1.36%)
Confidence: ±0.015 (-0.401..-0.370) - [0.0%]

3. Rollout¹ Bar/22 13/7 6/3 eq:-0.404 (-0.080)
Player: 40.48% (G:12.73% B:0.49%)
Opponent: 59.52% (G:21.80% B:0.92%)
Confidence: ±0.014 (-0.418..-0.390) - [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

Re: Rollout: Another 33 to play

<xn0my41kr5at0jh001@nntp.aioe.org>

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From: REMOVETH...@gmail.com (badgolferman)
Newsgroups: rec.games.backgammon
Subject: Re: Rollout: Another 33 to play
Date: Thu, 20 May 2021 15:23:54 +0000 (UTC)
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 by: badgolferman - Thu, 20 May 2021 15:23 UTC

Timothy Chow wrote:

>XGID=--aCbBCA----bD----cdab--AA:0:0:1:33:0:0:0:0:10
>
>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 X |
> | X O | | O O |
> | X O | | O |
> | X | | O |
> | | X | |
> | |BAR| |
> | | | |
> | | | |
> | | | X X |
> | O | | X X O X |
> | O X | | X X O X O |
> +12-11-10--9--8--7-------6--5--4--3--2--1-+
>Pip count X: 145 O: 149 X-O: 0-0
>Cube: 1
>X to play 33
>
>Switching to a point behind the opponent's anchor is an unusual play.
>Here I think it is best thought of as a tempo hit, aimed at preventing
>O from covering her 5pt blot.
>
> 1. Rollout¹ Bar/22 13/10 5/2*(2) eq:-0.324
> Player: 41.59% (G:15.15% B:0.53%)
> Opponent: 58.41% (G:20.55% B:1.32%)
> Confidence: ±0.015 (-0.339..-0.309) - [100.0%]
>
> 2. Rollout¹ Bar/22 13/10 13/7 eq:-0.385 (-0.061)
> Player: 41.09% (G:14.21% B:0.77%)
> Opponent: 58.91% (G:22.99% B:1.36%)
> Confidence: ±0.015 (-0.401..-0.370) - [0.0%]
>
> 3. Rollout¹ Bar/22 13/7 6/3 eq:-0.404 (-0.080)
> Player: 40.48% (G:12.73% B:0.49%)
> Opponent: 59.52% (G:21.80% B:0.92%)
> Confidence: ±0.014 (-0.418..-0.390) - [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

Is there anyone here who would *really* play Bar/22 13/10 5/2*(2) ?

1
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