BGonline.org Forums

64S-55A-65R-C, and related cube decisions

Posted By: Nack Ballard
Date: Friday, 19 November 2010, at 2:41 a.m.

147 64S-55A-65R-C 147

149 62S-55A-65R-C 147

On 6/18/10, Stick posted the left-hand cube decision, 64S-55A-65R-C, here, as a close N (no double):

[N 498 –3] <10

Ken Bame just finished a longer rollout revealing it to be a close D (double):

[D 504 –2] <31

Combining the two results, we get

[D 502 –1] <41

The right-hand cube decision, 62S-55A-65R-C, is clearer. Stick's result is

[N 477 –27] <10

I'm not sure what happened to the in-between position (63S-55A-65R-C, diagammed below) that Stick originally faced in the box and posted here. However, it seems reasonable to conclude that it is a smallish N (no double).

	148
63S-55A-65R-C	147

Move sequence of first diagram: 64S (Split) = 24/18 13/9, 55A (Attack) = 8/3(2) 6/1*(2), 65R (Run) = Bar/14, C = Cube (initial double).

Cube decisions: N = No double, D = Double. Equities and margins are in thousandths, and the bot symbol < stands for XG 3-ply. For example, "[D 502 –1] <41" means that in XG 3-ply rollout(s) of 41000+ trials, the position is a Double, having an equity of .502, and it is an error of .001 to Not double (which by subtraction would be an equity of .501). There is no need to additionally list the equity of Double/Pass, which is always 1.000.

Nack