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Cube Action? Rollout

Posted By: Colin Owen
Date: Wednesday, 18 June 2025, at 1:44 p.m.

In Response To: Cube Action? (Colin Owen)

Firstly, this was the XG evaluation:





White is Player 1

score: 0
pip: 78
Unlimited Game
Beaver
pip: 153
score: 0

Blue is Player 2
XGID=-bCE-CBAa-a-a--a--bcbb-A--:1:-1:-1:00:0:0:2:0:10
Blue on roll, cube action?

Analyzed in 3-ply No redouble Redouble/Take
Player Winning Chances: 70.080% (G:14.076% B:0.438%) 70.080% (G:14.076% B:0.438%)
Opponent Winning Chances: 29.920% (G:11.781% B:0.945%) 29.920% (G:11.781% B:0.945%)
Cubeless Equities +0.4195 +0.8390
Cubeful Equities
No redouble:+0.6783
Redouble/Take:+0.6283 (-0.0500)
Redouble/Pass:+1.0000 (+0.3217)
Best Cube action: No redouble / Take
Percentage of wrong pass needed to make the double decision right: 11.9%

eXtreme Gammon Version: 2.10

The rollout said otherwise, making Ah Clem, John (and me OTB) right!





White is Player 1

score: 0
pip: 78
Unlimited Game
Beaver
pip: 153
score: 0

Blue is Player 2
XGID=-bCE-CBAa-a-a--a--bcbb-A--:1:-1:-1:00:0:0:2:0:10
Blue on roll, cube action?

Analyzed in Rollout No redouble Redouble/Take
Player Winning Chances: 71.012% (G:15.918% B:0.649%) 71.956% (G:16.824% B:0.730%)
Opponent Winning Chances: 28.988% (G:12.034% B:1.032%) 28.044% (G:11.940% B:0.993%)
Cubeless Equities +0.4552 +0.9707
Cubeful Equities
No redouble:+0.7647 (-0.0561)±0.0020 (+0.7627..+0.7667)
Redouble/Take:+0.8208±0.0032 (+0.8176..+0.8239)
Redouble/Pass:+1.0000 (+0.1792)
Best Cube action: Redouble / Take
Rollout details
46656 Games rolled with Variance Reduction.
Dice Seed: 99412940
Moves: 3-ply, cube decisions: XG Roller
Double Decision confidence:100.0%
Take Decision confidence:100.0%
Duration: 43 minutes 22 seconds

eXtreme Gammon Version: 2.10

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