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interests / rec.games.backgammon / Rollout: 5pt or 7pt?

SubjectAuthor
* 5pt or 7pt?Timothy Chow
`- Rollout: 5pt or 7pt?Timothy Chow

1
5pt or 7pt?

<t1rahp$492$3@dont-email.me>

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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: 5pt or 7pt?
Date: Sun, 27 Mar 2022 23:37:29 -0400
Organization: A noiseless patient Spider
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 by: Timothy Chow - Mon, 28 Mar 2022 03:37 UTC

XGID=--aCBAB-C--AA---b-bdBbbb--:0:0:1:51:0:0:0:0:10

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 |
| O O | | O X O O O |
| | | O |
| | | O |
| | | |
| |BAR| |
| | | |
| | | |
| X | | X |
| X | | X X X |
| X X X | | X X X X O |
+12-11-10--9--8--7-------6--5--4--3--2--1-+
Pip count X: 121 O: 97 X-O: 0-0
Cube: 1
X to play 51

---
Tim Chow

Rollout: 5pt or 7pt?

<t1v0ji$j71$1@dont-email.me>

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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: 5pt or 7pt?
Date: Tue, 29 Mar 2022 09:12:17 -0400
Organization: A noiseless patient Spider
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 by: Timothy Chow - Tue, 29 Mar 2022 13:12 UTC

XGID=--aCBAB-C--AA---b-bdBbbb--:0:0:1:51:0:0:0:0:10

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 |
| O O | | O X O O O |
| | | O |
| | | O |
| | | |
| |BAR| |
| | | |
| | | |
| X | | X |
| X | | X X X |
| X X X | | X X X X O |
+12-11-10--9--8--7-------6--5--4--3--2--1-+
Pip count X: 121 O: 97 X-O: 0-0
Cube: 1
X to play 51

I have some thoughts about this one, but instead of sharing them, let
me just post the variant and invite others to explain the difference
between the two positions.

1. Rollout¹ 12/7 8/7 eq:+0.392
Player: 59.67% (G:7.23% B:0.22%)
Opponent: 40.33% (G:12.73% B:0.24%)
Confidence: ±0.009 (+0.383..+0.402) - [100.0%]

2. Rollout¹ 11/5 eq:+0.315 (-0.077)
Player: 59.41% (G:7.12% B:0.19%)
Opponent: 40.59% (G:6.19% B:0.11%)
Confidence: ±0.009 (+0.306..+0.324) - [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=-AaBBAB-C--AA---b-bdBbbb--:0:0:1:51:0:0:0:0:10

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 |
| O O | | O X O O O |
| | | O |
| | | O |
| | | |
| |BAR| |
| | | |
| | | |
| X | | |
| X | | X X X |
| X X X | | X X X X O X |
+12-11-10--9--8--7-------6--5--4--3--2--1-+
Pip count X: 119 O: 97 X-O: 0-0
Cube: 1
X to play 51

1. Rollout¹ 11/5 eq:+0.170
Player: 55.27% (G:6.54% B:0.16%)
Opponent: 44.73% (G:6.43% B:0.16%)
Confidence: ±0.009 (+0.161..+0.179) - [100.0%]

2. Rollout¹ 12/7 8/7 eq:+0.095 (-0.075)
Player: 53.68% (G:5.87% B:0.15%)
Opponent: 46.32% (G:13.54% B:0.26%)
Confidence: ±0.010 (+0.085..+0.105) - [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

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