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Snowie Rollout

Posted By: Stick
Date: Tuesday, 14 November 2006, at 3:12 a.m.

In Response To: Rehashed discussion from r.g.b. - Beaver or not? (Hardy Hübener)

So what says GNU? Hopefully Hardy will post his GNU rollout here, if not, I will post it here for him tomorrow some time.

As Gregg Cattanach noted on RGB: There is a small defect in Snowie regarding the words it uses for cube decisions. For evaluations Beaver is one of the possible choices, but after your roll something out with a live cube, Beaver is no longer listed (it will say Take instead). After the rollout if the doubler's equity shows as negative, it is still a Beaver even though it will say Take.

Money Game
Blue on roll. Cube Action?
86
88
Board image courtesy of GO-Figure

Cube action equity
Rollout Money equity: 0.137
0.7% 27.4% 44.3% 55.7% 2.9% 0.0%
95% confidence interval: - money cubeless eq.: 0.137 ±0.010, - live cube no double: -0.222 ±0.004, - live cube double take: -0.004 ±0.017. Rollout settings Full rollout, 1296 games (equiv. 73649 games), played 3-ply (precise), cube 3-ply, settlement 0.550 at 16 pts random seed, with race database.
Evaluations
1. Double, take -0.053
2. No double -0.222 (-0.169)
3. Double, pass 1.000 (+1.053)
Proper cube action: Double, beaver
Live cube
1. Double, take -0.004
2. No double -0.222 (-0.218)
3. Double, pass 1.000 (+1.004)
Proper cube action: Double, take

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