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A question about live cube in xg

Posted By: Neil Robins
Date: Sunday, 19 February 2012, at 9:41 p.m.

In Response To: A question about live cube in xg (rew)

Live cube numbers assume maximum cube efficiency on this cube and ALL SUBSEQUENT CUBES. That does NOT translate to meaning that you can never have a take where your win less. The live cube take point in the position below in a money game would be 20% as it is in all positions where there are no gammons possible, but it is still trivially an optional take. At the score posted, the live cube takepoint for white is 18.99%on the RK MET, but the calculation of the live take point for white ATS starts from looking at blue's take point on a 32 cube and works back from there, which has no relevance whosoever since blue is already looking at a pass on any eight cube.





White is Player 2

score: 0
pip: 6
17 point match
pip: 6
score: 2

Blue is Player 1
XGID=------A------------a------:1:1:1:00:2:0:0:17:10
Blue on roll, cube action?


Analyzed in Rollout
No Double
Player Winning Chances: 81.25% (G: 0.00% B: 0.00%)
Opponent Winning Chances: 18.75% (G: 0.00% B: 0.00%)
Double/Take
Player Winning Chances: 81.25% (G: 0.00% B: 0.00%)
Opponent Winning Chances: 18.75% (G: 0.00% B: 0.00%)
Cubeless Equities
No Redouble:+0.625
Redouble:+1.250
Cubeful Equities
No Redouble:+0.625 (-0.371)
Redouble/Take:+0.996
Redouble/Drop:+1.000 (+0.004)
Best Cube action: Redouble / Take
Rollout details
1296 Games rolled with Variance Reduction.
Dice Seed: 31247
First 2 moves and cube decisions: 4 ply
Remaining moves and cube decisions: 3 ply
Confidence No Redouble: ± 0.000 (+0.625...+0.625)
Confidence Redouble: ± 0.000 (+0.996...+0.996)
Double Decision confidence: 100.0%
Take Decision confidence: 100.0%
Duration: 0.1 second

eXtreme Gammon Version: 1.21, MET: Rockwell-Kazaross

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