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It just doesn't seem right to go over the river and through the woods to Grandmother's condo.

interests / rec.games.backgammon / Rollout: Double 1's yet again

Double 1's yet again

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From: tchow12...@yahoo.com (Timothy Chow)
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Subject: Double 1's yet again
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by: Timothy Chow - Sun, 25 Feb 2024 14:31 UTC

XGID=aCC--BBBC---b---ab-cc-ba--:1:-1:1:11:0:0:0:0:10

Score is X:0 O:0. Unlimited Game
+13-14-15-16-17-18------19-20-21-22-23-24-+
| O O | | O O O O | +---+
| O | | O O O | | 2 |
| | | O O | +---+
| | | |
| | | |
| |BAR| |
| | O | |
| | | |
| X | | X X |
| O 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: 69 O: 117 X-O: 0-0
Cube: 2, O own cube
X to play 11

---
Tim Chow

Rollout: Double 1's yet again

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From: tchow12...@yahoo.com (Timothy Chow)
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by: Timothy Chow - Sat, 2 Mar 2024 15:45 UTC

XGID=aCC--BBBC---b---ab-cc-ba--:1:-1:1:11:0:0:0:0:10

I found this to be a surprising point-switching play.

1. Rollout¹ 8/6 5/4(2) eq:+0.840
Player: 87.67% (G:13.37% B:0.03%)
Opponent: 12.33% (G:0.59% B:0.02%)
Confidence: ±0.004 (+0.836..+0.844) - [100.0%]

2. Rollout¹ 6/4(2) eq:+0.798 (-0.042)
Player: 86.73% (G:11.57% B:0.03%)
Opponent: 13.27% (G:1.04% B:0.04%)
Confidence: ±0.004 (+0.793..+0.802) - [0.0%]

3. Rollout¹ 7/6(2) 5/4(2) eq:+0.788 (-0.052)
Player: 86.19% (G:11.81% B:0.03%)
Opponent: 13.81% (G:0.96% B:0.03%)
Confidence: ±0.004 (+0.784..+0.792) - [0.0%]

4. Rollout¹ 8/5 2/1 eq:+0.780 (-0.060)
Player: 84.93% (G:13.96% B:0.03%)
Opponent: 15.07% (G:0.96% B:0.04%)
Confidence: ±0.004 (+0.776..+0.784) - [0.0%]

5. Rollout¹ 8/5 7/6 eq:+0.770 (-0.070)
Player: 83.82% (G:16.33% B:0.05%)
Opponent: 16.18% (G:1.13% B:0.04%)
Confidence: ±0.004 (+0.765..+0.774) - [0.0%]

6. Rollout¹ 7/6 7/5 2/1 eq:+0.753 (-0.087)
Player: 84.22% (G:12.91% B:0.03%)
Opponent: 15.78% (G:0.94% B:0.03%)
Confidence: ±0.004 (+0.749..+0.757) - [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

Subject	Author
Double 1's yet again	Timothy Chow
Rollout: Double 1's yet again	Timothy Chow