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RO and comments

Posted By: John O'Hagan
Date: Saturday, 19 July 2025, at 12:53 a.m.

In Response To: Cube action at the score? (John O'Hagan)

Ah Clem is right. I redoubled over the board, thinking that White might not even have the 13% or so to take. White wins over 17% from here and recubing is a double whopper.





White is Player 2

score: 5
pip: 100
13 point match
pip: 76
score: 9

Blue is Player 1
XGID=aC-CC-C-A----B---bbcbbc---:1:1:1:00:9:5:0:13:10
Blue on roll, cube action?

Analyzed in Rollout No redouble Redouble/Take
Player Winning Chances: 82.21% (G:3.69% B:0.02%) 82.47% (G:3.76% B:0.02%)
Opponent Winning Chances: 17.79% (G:1.03% B:0.03%) 17.53% (G:0.65% B:0.01%)
Cubeless Equities +0.671 +1.290
Cubeful Equities
No redouble:+0.811±0.005 (+0.807..+0.816)
Redouble/Take:+0.564 (-0.247)±0.009 (+0.555..+0.573)
Redouble/Pass:+1.000 (+0.189)
Best Cube action: No redouble / Take
Percentage of wrong pass needed to make the double decision right: 36.2%
Rollout details
1296 Games rolled with Variance Reduction.
First 12 moves: 3-ply, cube decisions: XG Roller
Remaining moves: 3-ply Red, cube decisions: 4-ply
Search interval: Large
Double Decision confidence:100.0%
Take Decision confidence:100.0%
Duration: 1 minute 11 seconds

eXtreme Gammon Version: 2.10, MET: Kazaross XG2

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