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64S-21H-51 — Unlimited Games — 3-ply XG2 Rollouts

Posted By: Taper_Mike
Date: Thursday, 2 May 2013, at 9:37 p.m.

In Response To: Nactations of 64S-21H-51 (Taper_Mike)


1O ' ' ' '5X1X2X ' '1X4O

2X ' ' ' '5O '3O1O ' '4X
64S-21H-51
Position ID: 4GvkATDgc+EBUA Match ID: cIkGAAAAAAAA

64S-21H-51 — Unlimited Games
Bot Seed Equity Nacbracs Link
GnuBg 2-ply Trunc 682604409 –150.105 [S U2 B28] /0.360t Taper_Mike
XG 2.xx 3-ply [Dmitriy 5k + Mike 31k] –113.6 [U S14] /36 [XG2 Aggregate]
XG 2.00 3-ply 685676 –108.8 [U S17] "<5 Dmitriy Obukhov
XG 2.10 3-ply, Cubes: XGR 85804488 –114.4 [U S13] "<=31 Taper_Mike
XG 2.10 XGR++ Eval [XGR++ seed] –107.7 [U S15 B33] "&e Taper_Mike

Key: B (Both) = bar/20 9/8, S (Split) = bar/24 13/8, U (Up) = bar/20 24/23

Explanation of nacbracs

I asked about this position on a single line near the end of my post entitled Nactations of 64S-21H-51. I suspect if I had posed the question more prominently, I would have had some takers.

Below are a pair of XG2 rollouts that both have coming under gun as slightly better than remaking the 1pt. Coming under the gun may play better here than in other circumstances because you get to advance the rear checker to the 23pt, where it threatens any blot the opponent may leave on his bar point or 8pt.

Thanks to Dmitriy for sending his rollout.

Mike


Rollout by Dmitriy Obukhov





White is Player 2

score: 0
pip: 164
Unlimited Game
Jacoby Beaver
pip: 164
score: 0

Blue is Player 1
XGID=-b----E-CA--dDa--bae----AA:0:0:1:15:0:0:3:0:10
Blue to play 15
1.Rollout1Bar/20 24/23eq: -0.1088
Player:
Opponent:
47.67% (G:13.88% B:0.87%)
52.33% (G:17.02% B:0.80%)
Conf.: ±0.0089 (-0.1177...-0.1000) - [99.7%]
Duration: 22 minutes 21 seconds
2.Rollout1Bar/24 13/8eq: -0.1255 (-0.0166)
Player:
Opponent:
46.71% (G:14.52% B:0.79%)
53.29% (G:15.82% B:0.85%)
Conf.: ±0.0076 (-0.1331...-0.1178) - [0.3%]
Duration: 19 minutes 54 seconds
 
1 5184 Games rolled with Variance Reduction.
Dice Seed: 685676
Moves and cube decisions: 3-ply

Rollout by Dmitriy Obukhov
2011-Sep-07
eXtreme Gammon Version: 2.00
64S-21H-51-do.xgp
[U S17] "<5

eXtreme Gammon Version: 2.10


Rollout by Taper_Mike





White is Player 2

score: 0
pip: 164
Unlimited Game
Jacoby Beaver
pip: 164
score: 0

Blue is Player 1
XGID=-b----E-CA--dDa--bae----AA:0:0:1:51:0:0:3:0:10
Blue to play 51
1.Rollout1Bar/20 24/23eq: -0.1144
Player:
Opponent:
47.67% (G:13.68% B:0.81%)
52.33% (G:16.97% B:0.80%)
Conf.: ±0.0034 (-0.1178...-0.1110) - [100.0%]
Duration: 4 hours 03 minutes
2.Rollout1Bar/24 13/8eq: -0.1275 (-0.0131)
Player:
Opponent:
46.65% (G:14.41% B:0.83%)
53.35% (G:15.67% B:0.84%)
Conf.: ±0.0034 (-0.1309...-0.1240) - [0.0%]
Duration: 3 hours 43 minutes
 
1 31104 Games rolled with Variance Reduction.
Dice Seed: 85804488
Moves: 3-ply, cube decisions: XG Roller

Rollout by Taper_Mike
2013-May-02
eXtreme Gammon Version: 2.10.199.2658
64S-21H-51-tm.xgp
[U S13] "<=31
[U S15 B33] "&e

eXtreme Gammon Version: 2.10

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