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64S-21 Gammon Go 2-ply GnuBg v1 Rollout

Posted By: Taper_Mike
Date: Wednesday, 19 June 2013, at 9:44 p.m.

In Response To: 64S-21 All Scores Call for Rollouts (Taper_Mike)

The score (after 0 games) is: GNUbg 1, You 0 (match to 2 points, Crawford game)

Move number 4: You to play 21

GNUbg157

2O ' ' ' '5X '3X1X ' '5O

1X ' ' ' '5O1X3O ' ' '4X
You167
Position ID: 4HPhQSDgc/ABMA Match ID: 8AlFABAAAAAE

# Ply Move Equity
1 R 13/11 8/7* +0.220653
 
0.4822060.1281210.010825-0.5177940.2473370.040001 +0.220654 +0.220653
0.0003320.0002790.000230-0.0003320.0010230.000528 0.000834 0.000834
 
  Full cubeful rollout with var.redn.  
  46656 games, Mersenne Twister dice gen. with seed 681363162 and quasi-random dice  
  Play: 2-ply cubeful prune [world class]  
  keep the first 2 0-ply moves and up to 6 more moves within equity 0.16  
  Skip pruning for 1-ply moves.  
  Cube: 2-ply cubeful prune [world class]  
  2 R 24/22 8/7* +0.203715 ( -0.016938)
 
0.4775250.1243330.010929-0.5224750.2458180.030594 +0.203717 +0.203715
0.0003330.0002850.000238-0.0003330.0010090.000441 0.000832 0.000832
 
  Full cubeful rollout with var.redn.  
  46656 games, Mersenne Twister dice gen. with seed 681363162 and quasi-random dice  
  Play: 2-ply cubeful prune [world class]  
  keep the first 2 0-ply moves and up to 6 more moves within equity 0.16  
  Skip pruning for 1-ply moves.  
  Cube: 2-ply cubeful prune [world class]  


Annotation
Rollout by Philippe Michel
2013-Jun-17
GNU Backgammon Version: 1.00.0
MET: Rockwell-Kazaross
64S-21-g-pm.sgf
g[H X17] '/46

Using the new GnuBg version 1.00, Philippe made strong 46k rollouts of 64S-21 at all four major scores.

Thanks, Philippe, for sending them along.

Mike

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