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Rollout: Not quite your standard cube action

Posted By: Timothy Chow
Date: Monday, 27 August 2012, at 10:58 p.m.

In Response To: Rollout: Not quite your standard cube action (Bob Koca)

This is a belated followup to a post I made a couple of months ago.

Bob's XG2 rollout indicates a significantly smaller ND than my XG1 rollout below. Both rollouts still have some variance in them, but my guess is that XG1 3-ply and XG2 XGR are handling the cube differently.





White is Player 1

score: 0
pip: 147
Money session
Jacoby
pip: 128
score: 0

Blue is Player 2
XGID=-a-B--FbC--adB----B-abb-b-:1:1:1:00:0:0:1:0:10
Blue on roll, cube action?


Analyzed in Rollout
No Double
Player Winning Chances: 62.80% (G: 25.35% B: 1.24%)
Opponent Winning Chances: 37.20% (G: 10.59% B: 0.31%)
Double/Take
Player Winning Chances: 63.19% (G: 25.59% B: 1.11%)
Opponent Winning Chances: 36.81% (G: 10.01% B: 0.31%)
Cubeless Equities
No Redouble:+0.413
Redouble:+0.855
Cubeful Equities
No Redouble:+0.663
Redouble/Take:+0.563 (-0.099)
Redouble/Drop:+1.000 (+0.337)
Best Cube action: No Redouble / Take
Rollout details
1296 Games rolled with Variance Reduction.
Dice Seed: 2
Moves and cube decisions: 3 ply
Confidence No Redouble: ± 0.017 (+0.645...+0.680)
Confidence Redouble: ± 0.028 (+0.536...+0.591)
Double Decision confidence: 100.0%
Take Decision confidence: 100.0%
Duration: 2 hours 47 minutes

eXtreme Gammon Version: 1.21

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