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501 #35 RO

Posted By: Stick
Date: Friday, 23 August 2013, at 6:20 p.m.

In Response To: 501 Essential Backgammon Problems #35 ROLLOUT (ah_clem)

I don't have an XG rollout for this because I didn't roll out problems when it was rather clear with XGR++. XGR++ thinks it's right to play 13/8 by .033. I'm guessing Tim's rollout is my rollout or it's a coincidence the same margin of error results in our separate rollouts.

user152

1O ' ' '3X3X '3X1X ' '3O

1X1X ' ' '5O2O2O1O ' '3X
gnubg157
Position ID: cOfCASjg28IBUA Match ID: cIkOAAAAAAAA

# Ply Move Equity
1 R bar/22 13/8 -0.488
0.3950.1110.005-0.6050.2290.013 -0.336 -0.488
0.0010.0010.000-0.0010.0010.000 0.002 0.005
Full cubeful rollout with var.redn.
7776 games, Mersenne Twister dice gen. with seed 838412390 and quasi-random dice
Play: 2-ply cubeful prune [world class]
keep the first 0 0-ply moves and up to 12 more moves within equity 0.16
Skip pruning for 1-ply moves.
Cube: 2-ply cubeful prune [world class]
• 2 R bar/22 6/1* -0.513 ( -0.025)
0.3910.1080.006-0.6090.2370.016 -0.358 -0.513
0.0010.0010.001-0.0010.0010.000 0.003 0.006
Full cubeful rollout with var.redn.
7776 games, Mersenne Twister dice gen. with seed 838412390 and quasi-random dice
Play: 2-ply cubeful prune [world class]
keep the first 0 0-ply moves and up to 12 more moves within equity 0.16
Skip pruning for 1-ply moves.
Cube: 2-ply cubeful prune [world class]

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