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Posted By: John O'Hagan
Date: Sunday, 12 September 2010, at 2:21 a.m.

In Response To: 11a-4a, cube action? (John O'Hagan)

ATS, my OTB estimate was that the leader's 2-cube takepoint was right around the normal 25%, gammon values help the trailer more by something like 60%/42%, and the leader will seldom be able to offer a sensible recube since T's takepoint on anything but a last roll position would be around 12% and recubing would kill his own gammons. At lopsided scores like this, my rule of thumb is that the trailer's cube starts to become profitable when he's within 8% of the oppt's takepoint and he has 3 or 4 market losers in 36. If you have more than 3 or 4 market losers, you can double or redouble even earlier. I didn't think I was within the 8% guideline but I figured I had more than 3 or 4, so I doubled. RO sez it's a small double and a huge take.

is Player 2

score: 9
pip: 64
13 point match
pip: 161
score: 2

is Player 1
XGID=----BBBCB---------abbeeBB-:0:0:1:00:2:9:0:13:10
on roll, cube action?


Analyzed in Rollout
No Double
Player Winning Chances: 63.69% (G: 9.34% B: 0.48%)
Opponent Winning Chances: 36.31% (G: 18.72% B: 5.52%)
Double/Take
Player Winning Chances: 65.21% (G: 11.31% B: 0.60%)
Opponent Winning Chances: 34.79% (G: 18.63% B: 8.04%)
Cubeless Equities
No Double:+0.093
Double:+0.508
Cubeful Equities
No Double:+0.454 (-0.042)
Double/Take:+0.496
Double/Drop:+1.000 (+0.504)
Best Cube action: Double / Take
Rollout details
1296 Games rolled with Variance Reduction.
Moves and cube decisions: 3 ply
Confidence No Double: ± 0.022 (+0.432...+0.476)
Confidence Double: ± 0.028 (+0.468...+0.525)
Double Decision confidence: 99.0%
Take Decision confidence: 100.0%
Duration: 15 minutes 37 seconds

eXtreme Gammon Version: 1.21, MET: Rockwell-Kazaross

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