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Action Cube Decision

Posted By: Albert Steg
Date: Sunday, 3 July 2016, at 3:54 p.m.

In Response To: Action Cube Decision (Timothy Chow)

Well, not in the sense that the resulting equity is any different, but yes, you gain "only" .300 by doubling this without the Jacoby Rule in effect, while you gain .526 in the original position. Obviously, it's a big double in either case but is .226 "bigger" with Jacoby in effect because your undoubled equity is that much lower to begin with.





White is Player 2

score: 0
pip: 83
Unlimited Game
Beaver
pip: 91
score: 0

Blue is Player 1
XGID=-BBBCBB-----b-a--a-eA--bdA:0:0:1:00:0:0:2:0:10
Blue on roll, cube action?

Analyzed in Rollout No double Double/Take
Player Winning Chances: 64.49% (G:25.98% B:0.37%) 64.61% (G:25.25% B:0.35%)
Opponent Winning Chances: 35.51% (G:1.80% B:0.02%) 35.39% (G:1.66% B:0.02%)
Cubeless Equities +0.535 +1.063
Cubeful Equities
No double:+0.470 (-0.300)±0.007 (+0.463..+0.477)
Double/Take:+0.770±0.011 (+0.759..+0.781)
Double/Pass:+1.000 (+0.230)
Best Cube action: Double / Take
Rollout details
1296 Games rolled with Variance Reduction.
Moves: 3-ply, cube decisions: XG Roller
Double Decision confidence:100.0%
Take Decision confidence:100.0%
Duration: 1 minute 20 seconds

eXtreme Gammon Version: 2.10

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