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64R-32D-F-65P-61 No Jacoby, No Beavers 3-ply XG2 Rollout

Posted By: Taper_Mike
Date: Saturday, 21 June 2014, at 4:28 a.m.

In Response To: 64R-32D-F-65P-61, Variant Rollout -- spoiler (Nack Ballard)

White is Player 2

score: 0
pip: 151
Unlimited Game
pip: 168
score: 0

Blue is Player 1
Blue to play 61

1.Rollout1Bar/24 13/7eq: -0.5865
37.60% (G:9.06% B:0.38%)
62.40% (G:22.17% B:1.75%)
Conf.: ±0.0025 (-0.5890...-0.5840) - [95.5%]
Duration: 6 hours 57 minutes
2.Rollout1Bar/18eq: -0.5894 (-0.0029)
38.21% (G:8.44% B:0.41%)
61.79% (G:26.56% B:0.88%)
Conf.: ±0.0022 (-0.5916...-0.5871) - [4.5%]
Duration: 6 hours 20 minutes
1 62208 Games rolled with Variance Reduction.
Dice Seed: 55966683
Moves: 3-ply, cube decisions: XG Roller

Rollout by Taper_Mike
eXtreme Gammon Version:
n[D U3] "<=62
n[U D8] "&e

eXtreme Gammon Version: 2.10

64R-32D-F-65P-61 — Unlimited Games
Bot Seed Equity Nacbracs Link
XG 2.10 3-ply, Cubes: XGR 92861368 582 [U D6] "<=20 Nack Ballard
GnuBg 1.02 2-ply Trunc 711131804 586.091 n[U D15] '/0.360t Taper_Mike
XG 2.10 3-ply, Cubes: XGR 55966683 586.5 n[D U3] "<=62 Taper_Mike (above)
XG 2.10 XGR++ Eval [XGR++ seed] 595.8 n[U D8] "&e Taper_Mike

Key: D = Down [bar/24, 13/7], U = Up [bar/18]

Nactation Tutorial Explanation of nacbracs Nacbracs for cube actions

Nack came up with this sequence. He describes it as, A useful reference position. U (Up, bar/18) and D (Down, bar/24 13/7) are essentially tied.

Although no doublets were in rolled in arriving at this position, it can be grouped with the third-roll positions in this thread where the opponent has played 44P on the second roll. The rule of thumb for such positions advises that it is usually wrong to break you anchor. One of the exceptions after 44P occurs when playing down from the midpoint would force you to expose a blot to a direct shot (on your bar point).


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