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53P-42P-43S-52 – No Jacoby, No Beavers – 3-ply XG2 Rollout

Posted By: Taper_Mike
Date: Sunday, 20 July 2014, at 9:01 a.m.

In Response To: Four problems related to Opening 42 (Nack Ballard)





White is Player 2

score: 0
pip: 152
Unlimited Game
pip: 161
score: 0

Blue is Player 1
XGID=-a--BaD-B---dE-a-b-d--b-B-:0:0:1:52:0:0:0:0:10
Blue to play 52

1.Rollout113/11 13/8eq: -0.2841
Player:
Opponent:
43.77% (G:12.11% B:0.51%)
56.23% (G:18.19% B:1.10%)
Conf.: ±0.0021 (-0.2863...-0.2820) - [52.3%]
Duration: 7 hours 14 minutes
2.Rollout113/8 6/4eq: -0.2842 (-0.0001)
Player:
Opponent:
43.63% (G:11.48% B:0.47%)
56.37% (G:17.65% B:0.88%)
Conf.: ±0.0021 (-0.2863...-0.2822) - [47.7%]
Duration: 7 hours 00 minute
3.Rollout213/6eq: -0.3043 (-0.0201)
Player:
Opponent:
43.08% (G:11.76% B:0.45%)
56.92% (G:17.97% B:0.93%)
Conf.: ±0.0041 (-0.3084...-0.3001) - [0.0%]
Duration: 1 hour 40 minutes
4.Rollout313/11 6/1* eq: -0.3279 (-0.0438)
Player:
Opponent:
43.10% (G:12.91% B:0.52%)
56.90% (G:20.35% B:1.56%)
Conf.: ±0.0064 (-0.3343...-0.3216) - [0.0%]
Duration: 55 minutes 55 seconds
 
1 62208 Games rolled with Variance Reduction.
Dice Seed: 23857294
Moves: 3-ply, cube decisions: XG Roller

2 15552 Games rolled with Variance Reduction.
Dice Seed: 23857294
Moves: 3-ply, cube decisions: XG Roller

3 7776 Games rolled with Variance Reduction.
Dice Seed: 23857294
Moves: 3-ply, cube decisions: XG Roller

Rollout by Taper_Mike
2014-Jul-19
eXtreme Gammon Version: 2.10.199.2658
53P-42P-43S-52-n-tm.xgp
n[D=N O20 H44] "<=62*15 7
n[D N4 O21 H52] "&e

eXtreme Gammon Version: 2.10

53P-42P-43S-52 — Unlimited Games
Bot Seed Equity Nacbracs Link
XG 2.10 3-ply, Cubes: XGR 79903269 –277 [D N5 O28 H44] "<=31*5 Nack Ballard
XG 2.10 XGR++ Eval [XGR++ seed] –282.4 [N D1 O16 H54] "&e Taper_Mike
GnuBg 1.02 2-ply Trunc 713510863 –279.493 n[N D4 O23 H58] '/0.360t Taper_Mike
XG 2.10 3-ply, Cubes: XGR 23857294 –284.1 n[D=N O20 H44] "<=62*15 7 Taper_Mike (above)
XG 2.10 XGR++ Eval [XGR++ seed] –283.8 n[D N4 O21 H52] "&e Taper_Mike

Key: D = Down [13/11, 13/8], H = Hit [13/11, 6/1*], N = Near [13/8, 6/4], O = Outer [13/6]

Nactation TutorialExplanation of nacbracsNacbracs for cube actions

After 62k, this one ended in a dead heat. N = 13/8 6/4 trails D = 13/11 13/8 by only 0.0001. The rollout Nack made used the Jacoby Rule, a difference that resulted in giving D a slightly better margin. It was 0.005. For early positions, that kind of difference is very common when comparing Jacoby to no-Jacoby, which is to say, there is usually very little difference at all.

Mike

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