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interests / rec.games.backgammon / 61 to play

SubjectAuthor
* 61 to playTimothy Chow
`- Rollout: 61 to playTimothy Chow

1
61 to play

<sv2quv$oei$2@dont-email.me>

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https://www.novabbs.com/interests/article-flat.php?id=8236&group=rec.games.backgammon#8236

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Path: i2pn2.org!i2pn.org!eternal-september.org!reader02.eternal-september.org!.POSTED!not-for-mail
From: tchow12...@yahoo.com (Timothy Chow)
Newsgroups: rec.games.backgammon
Subject: 61 to play
Date: Tue, 22 Feb 2022 09:11:42 -0500
Organization: A noiseless patient Spider
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 by: Timothy Chow - Tue, 22 Feb 2022 14:11 UTC

XGID=-AB-b-C-C-B-aB-b-c-c-Bbb--:0:0:1:61:0:0:0:0:10

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 X O O |
| X O O | | O X O O |
| O | | O |
| | | |
| | | |
| |BAR| |
| | | |
| | | |
| X | | X |
| X X | | X O X |
| O X X | | X O X X |
+12-11-10--9--8--7-------6--5--4--3--2--1-+
Pip count X: 135 O: 127 X-O: 0-0
Cube: 1
X to play 61

---
Tim Chow

Rollout: 61 to play

<sv8585$anu$2@dont-email.me>

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https://www.novabbs.com/interests/article-flat.php?id=8247&group=rec.games.backgammon#8247

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Path: i2pn2.org!i2pn.org!eternal-september.org!reader02.eternal-september.org!.POSTED!not-for-mail
From: tchow12...@yahoo.com (Timothy Chow)
Newsgroups: rec.games.backgammon
Subject: Rollout: 61 to play
Date: Thu, 24 Feb 2022 09:37:56 -0500
Organization: A noiseless patient Spider
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 by: Timothy Chow - Thu, 24 Feb 2022 14:37 UTC

XGID=-AB-b-C-C-B-aB-b-c-c-Bbb--:0:0:1:61:0:0:0:0:10

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 X O O |
| X O O | | O X O O |
| O | | O |
| | | |
| | | |
| |BAR| |
| | | |
| | | |
| X | | X |
| X X | | X O X |
| O X X | | X O X X |
+12-11-10--9--8--7-------6--5--4--3--2--1-+
Pip count X: 135 O: 127 X-O: 0-0
Cube: 1
X to play 61

I chose to hit, but XG thinks my board is too weak for that. See the
variant below for comparison.

1. Rollout¹ 8/1 eq:-0.059
Player: 48.36% (G:9.49% B:0.27%)
Opponent: 51.64% (G:10.23% B:0.32%)
Confidence: ±0.011 (-0.070..-0.048) - [100.0%]

2. Rollout¹ 13/12* 12/6 eq:-0.146 (-0.087)
Player: 46.49% (G:10.24% B:0.31%)
Opponent: 53.51% (G:12.93% B:0.44%)
Confidence: ±0.015 (-0.162..-0.131) - [0.0%]

3. Rollout¹ 13/7 8/7 eq:-0.164 (-0.104)
Player: 45.57% (G:9.72% B:0.28%)
Opponent: 54.43% (G:11.99% B:0.46%)
Confidence: ±0.012 (-0.176..-0.151) - [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

-------
Variant
-------

XGID=-A-Bb-C-C-B-aB-b-c-c-Bbb--:0:0:1:61:0:0:0:0:10

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 X O O |
| X O O | | O X O O |
| O | | O |
| | | |
| | | |
| |BAR| |
| | | |
| | | |
| X | | X |
| X X | | X O X |
| O X X | | X O X X |
+12-11-10--9--8--7-------6--5--4--3--2--1-+
Pip count X: 137 O: 127 X-O: 0-0
Cube: 1
X to play 61

1. Rollout¹ 8/1 eq:+0.041
Player: 50.67% (G:10.57% B:0.29%)
Opponent: 49.33% (G:9.73% B:0.29%)
Confidence: ±0.006 (+0.035..+0.047) - [99.2%]

2. Rollout¹ 13/12* 12/6 eq:+0.029 (-0.011)
Player: 50.87% (G:11.87% B:0.41%)
Opponent: 49.13% (G:11.75% B:0.42%)
Confidence: ±0.007 (+0.022..+0.037) - [0.8%]

¹ 5184 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

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