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interests / rec.games.backgammon / An excellent roll!

SubjectAuthor
* An excellent roll!Timothy Chow
`- Rollout: An excellent roll!Timothy Chow

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An excellent roll!

<un9294$5voa$2@dont-email.me>

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Path: i2pn2.org!i2pn.org!eternal-september.org!feeder3.eternal-september.org!news.eternal-september.org!.POSTED!not-for-mail
From: tchow12...@yahoo.com (Timothy Chow)
Newsgroups: rec.games.backgammon
Subject: An excellent roll!
Date: Fri, 5 Jan 2024 09:04:20 -0500
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 by: Timothy Chow - Fri, 5 Jan 2024 14:04 UTC

XGID=-CBCBBA--a-----b--bbbBbca-:0:0:1:44:0:0:0:0:10

Score is X:0 O:0. Unlimited Game
+13-14-15-16-17-18------19-20-21-22-23-24-+
| O O | | O O X O O O |
| O O | | O O X O O |
| | | O |
| | | |
| | | |
| |BAR| |
| | | |
| | | |
| | | X X |
| | | X X X X X |
| O | | X X X X X X |
+12-11-10--9--8--7-------6--5--4--3--2--1-+
Pip count X: 82 O: 85 X-O: 0-0
Cube: 1
X to play 44

---
Tim Chow

Rollout: An excellent roll!

<unh00i$1ianh$1@dont-email.me>

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From: tchow12...@yahoo.com (Timothy Chow)
Newsgroups: rec.games.backgammon
Subject: Rollout: An excellent roll!
Date: Mon, 8 Jan 2024 09:14:41 -0500
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 by: Timothy Chow - Mon, 8 Jan 2024 14:14 UTC

XGID=-CBCBBA--a-----b--bbbBbca-:0:0:1:44:0:0:0:0:10

Score is X:0 O:0. Unlimited Game
+13-14-15-16-17-18------19-20-21-22-23-24-+
| O O | | O O X O O O |
| O O | | O O X O O |
| | | O |
| | | |
| | | |
| |BAR| |
| | | |
| | | |
| | | X X |
| | | X X X X X |
| O | | X X X X X X |
+12-11-10--9--8--7-------6--5--4--3--2--1-+
Pip count X: 82 O: 85 X-O: 0-0
Cube: 1
X to play 44

I succumbed to the temptation to hit, but doing so gives O too much
counterplay; it's not so easy to bring my remaining two checkers home
safely. But see the variant below.

1. Rollout¹ 21/13(2) eq:+0.862
Player: 74.18% (G:2.25% B:0.03%)
Opponent: 25.82% (G:1.53% B:0.05%)
Confidence: ±0.006 (+0.857..+0.868) - [100.0%]

2. Rollout¹ 21/9* 6/2 eq:+0.663 (-0.199)
Player: 68.03% (G:6.73% B:0.03%)
Opponent: 31.97% (G:3.06% B:0.08%)
Confidence: ±0.004 (+0.659..+0.667) - [0.0%]

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

eXtreme Gammon Version: 2.19.211.pre-release

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

XGID=-CBCBBA-a------b--bbBbbca-:1:-1:1:44:0:0:0:0:10

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 O | +---+
| O O | | O X O O O | | 2 |
| | | O | +---+
| | | |
| | | |
| |BAR| |
| | | |
| | | |
| | | X X |
| | | X X X X X |
| O | | X X X X X X |
+12-11-10--9--8--7-------6--5--4--3--2--1-+
Pip count X: 80 O: 84 X-O: 0-0
Cube: 2, O own cube
X to play 44

1. Rollout¹ 20/8* 6/2 eq:+0.537
Player: 77.43% (G:7.71% B:0.08%)
Opponent: 22.57% (G:2.00% B:0.05%)
Confidence: ±0.004 (+0.533..+0.540) - [100.0%]

2. Rollout¹ 20/12(2) eq:+0.515 (-0.022)
Player: 78.01% (G:2.31% B:0.02%)
Opponent: 21.99% (G:0.75% B:0.02%)
Confidence: ±0.003 (+0.511..+0.518) - [0.0%]

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

eXtreme Gammon Version: 2.19.211.pre-release

---
Tim Chow

interests / rec.games.backgammon / An excellent roll!

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