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Rollouts: 4a4a cube action
Posted By: Timothy Chow In Response To: 4a4a cube action (Timothy Chow)
Date: Monday, 20 December 2010, at 9:49 p.m.
The rollout suggests that Dmitriy's intuition is the most accurate of those who have posted here. I was surprised to see that the rollout indicates that the take is pretty close. XGR+, by the way, thinks the take is easy (0.814 or something like that). Can we trust the rollout, given that it differs so much from the evaluation? I think that the D/T equity is probably pretty reliable unless there's some reason to suspect that XG is mishandling the recube. The ND/T equity I'm less sure about. I'm also not sure whether it's O.K. to pretend that the pseudocubeless win/gammon numbers are real here.
I have also posted the money rollout (which indicates a TCTC double) and the position on the next roll after I lost my market. XGR+ thought it was still a paper-thin take (0.997) on the next roll but the rollout indicates a big pass, even though the exchange doesn't look like a massive market loser to the casual observer.
White is Player 2
score: 3
pip: 1387 point match pip: 141
score: 3
Blue is Player 1XGID=--aaBBB-B--CcB---bBbbd----:0:0:1:00:3:3:0:7:10 Blue on roll, cube action?
Analyzed in Rollout No Double Player Winning Chances: 66.40% (G: 19.60% B: 1.41%) Opponent Winning Chances: 33.60% (G: 8.85% B: 0.69%) Double/Take Player Winning Chances: 66.85% (G: 20.86% B: 2.48%) Opponent Winning Chances: 33.15% (G: 9.70% B: 1.41%) Cubeless Equities No Double: +0.489 Double: +1.313 Cubeful Equities No Double: +0.806 (-0.161) Double/Take: +0.967 Double/Drop: +1.000 (+0.033) Best Cube action: Double / Take Rollout details 3888 Games rolled with Variance Reduction.
Moves and cube decisions: 3 plyConfidence No Double: ± 0.016 (+0.790...+0.823) Confidence Double: ± 0.022 (+0.945...+0.990) Double Decision confidence: 100.0% Take Decision confidence: 99.8% Duration: 7 hours 54 minutes eXtreme Gammon Version: 1.21, MET: Rockwell-Kazaross
Money rollout:
White is Player 2
score: 0
pip: 138Money session
Jacobypip: 141
score: 0
Blue is Player 1XGID=--aaBBB-B--CcB---bBbbd----:0:0:1:00:0:0:1:0:10 Blue on roll, cube action?
Analyzed in Rollout No Double Player Winning Chances: 67.02% (G: 18.29% B: 0.63%) Opponent Winning Chances: 32.98% (G: 8.24% B: 0.30%) Double/Take Player Winning Chances: 67.11% (G: 19.75% B: 0.65%) Opponent Winning Chances: 32.89% (G: 8.62% B: 0.37%) Cubeless Equities No Double: +0.340 Double: +0.912 Cubeful Equities No Double: +0.685 (-0.002) Double/Take: +0.687 Double/Drop: +1.000 (+0.313) Best Cube action: Double / Take Rollout details 2592 Games rolled with Variance Reduction.
Moves and cube decisions: 3 plyConfidence No Double: ± 0.015 (+0.670...+0.699) Confidence Double: ± 0.018 (+0.669...+0.705) Double Decision confidence: 57.3% Take Decision confidence: 100.0% Duration: 5 hours 16 minutes eXtreme Gammon Version: 1.21
Next roll:
White is Player 2
score: 3
pip: 1307 point match pip: 135
score: 3
Blue is Player 1XGID=--aaBCB-B--BbB---bBbcd----:0:0:1:00:3:3:0:7:10 Blue on roll, cube action?
Analyzed in Rollout No Double Player Winning Chances: 67.06% (G: 23.28% B: 1.15%) Opponent Winning Chances: 32.94% (G: 9.99% B: 0.78%) Double/Take Player Winning Chances: 67.27% (G: 25.08% B: 3.13%) Opponent Winning Chances: 32.73% (G: 11.22% B: 1.61%) Cubeless Equities No Double: +0.529 Double: +1.458 Cubeful Equities No Double: +0.789 (-0.211) Double/Take: +1.153 (+0.153) Double/Drop: +1.000 Best Cube action: Double / Drop Rollout details 2592 Games rolled with Variance Reduction.
Moves and cube decisions: 3 plyConfidence No Double: ± 0.016 (+0.773...+0.805) Confidence Double: ± 0.029 (+1.124...+1.182) Double Decision confidence: 100.0% Take Decision confidence: 100.0% Duration: 4 hours 10 minutes eXtreme Gammon Version: 1.21, MET: Rockwell-Kazaross
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