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Rollout:: surpising and hard to explain

Posted By: David Levy
Date: Wednesday, 20 June 2012, at 12:38 a.m.

In Response To: A dog in the race, what's plan B? (David Levy)

The top four plays all include 22-16. I suppose that is the right way to avoid the point-on-head threat as it is a HUGE error to anchor on the 22. Of the deuces, 6-4 is best by a large margin. I suppose that is because only double-twos hit and make a new board point.

Note that some of the suggested plays did not even make the top six. Kudos to Tim who was the only one who found a play in the top three. I certainly didn't over the board.

I find this result most surprising and would love to hear from anyone who could demystifying it.





White is Player 2

score: 2
pip: 115
7 point match
pip: 165
score: 3

Blue is Player 1
XGID=--a--BD-C--A-B---cecc-A-B-:1:1:1:62:3:2:0:7:10
Blue to play 62

1.Rollout122/16 6/4eq: -0.263
Player:
Opponent:
42.04% (G:7.50% B:0.70%)
57.96% (G:23.86% B:3.49%)
Conf.: ± 0.012 (-0.275...-0.251) - [100.0%]
Duration: 48 minutes 00 second
2.Rollout122/16 11/9eq: -0.305 (-0.042)
Player:
Opponent:
38.54% (G:7.23% B:0.64%)
61.46% (G:21.08% B:2.14%)
Conf.: ± 0.011 (-0.316...-0.294) - [0.0%]
Duration: 39 minutes 42 seconds
3.Rollout122/14eq: -0.311 (-0.048)
Player:
Opponent:
38.32% (G:7.18% B:0.57%)
61.68% (G:20.72% B:2.40%)
Conf.: ± 0.011 (-0.322...-0.300) - [0.0%]
Duration: 36 minutes 41 seconds
4.Rollout122/16 13/11eq: -0.382 (-0.119)
Player:
Opponent:
35.91% (G:6.70% B:0.54%)
64.09% (G:20.99% B:2.51%)
Conf.: ± 0.011 (-0.392...-0.371) - [0.0%]
Duration: 36 minutes 47 seconds
5.Rollout124/22 8/2* eq: -0.418 (-0.155)
Player:
Opponent:
34.92% (G:6.80% B:0.38%)
65.08% (G:22.59% B:1.27%)
Conf.: ± 0.012 (-0.430...-0.406) - [0.0%]
Duration: 44 minutes 28 seconds
6.Rollout124/22 11/5eq: -0.422 (-0.159)
Player:
Opponent:
32.45% (G:6.11% B:0.32%)
67.55% (G:18.10% B:0.69%)
Conf.: ± 0.009 (-0.431...-0.413) - [0.0%]
Duration: 38 minutes 06 seconds
1 1296 Games rolled with Variance Reduction.
Moves: 3-ply, cube decisions: XG Roller

eXtreme Gammon Version: 2.03, MET: Kazaross XG2

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