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OTB & RO
Posted By: John O'Hagan In Response To: Cube action ATS? (John O'Hagan)
Date: Sunday, 3 January 2016, at 9:07 p.m.
What is White's true tp ATS? One way to estimate this is to ask what it would be if White auto recubes on his next shake. In that case:
Pass: 0-10 with 7% MWC. Take and lose: loses match with 0% MWC. Take and win: 8-8 with 50% MWC. Take and win a gammon: wins match with 100% MWC.
This gives a tp of 14% less 100% of his small g chances. If 1% g's, the tp is then 13%. The true tp is somewhat lower than this since White shouldn't recube right away after any of Blue's 25 numbers that make a full 6 prime. BTW, White is supposed to recube after any of Blue's other 11 numbers, even 65! Ignoring g's, the trailer's doubling window opens around 8% and closes at 55%.
So the trailer's true tp is probably around 11% or so (assuming 1% g's for White). It would be lower than 11% if White could offer an efficient recube but the chance of that looks remote starting from this position. I was Blue here vs. XG and couldn't decide if White had 11% or not, so the recube looked correct (even moreso given XG's skill advantage).
So it went R/T and the RO shows that it's just barely a redouble.
White is Player 2
score: 0
pip: 6513 point match pip: 113
score: 8
Blue is Player 1XGID=----aCCCBBA----A---bb-ddb-:1:1:1:00:8:0:0:13:10 Blue on roll, cube action?
Analyzed in Rollout No redouble Redouble/Take Player Winning Chances: 87.60% (G:5.65% B:0.11%) 88.24% (G:5.62% B:0.24%) Opponent Winning Chances: 12.40% (G:1.83% B:0.01%) 11.76% (G:1.61% B:0.02%) Cubeless Equities +0.773 +1.260 Cubeful Equities No redouble: +0.909 (-0.010) ±0.002 (+0.907..+0.912) Redouble/Take: +0.920 ±0.006 (+0.914..+0.926) Redouble/Pass: +1.000 (+0.080) Best Cube action: Redouble / Take Rollout details 5184 Games rolled with Variance Reduction.
Moves: 3-ply, cube decisions: XG RollerDouble Decision confidence: 99.9% Take Decision confidence: 100.0% Duration: 47 minutes 35 seconds eXtreme Gammon Version: 2.10, MET: Kazaross XG2
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