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64R-52H-54@-61 — Unlimited Games — 2-ply GnuBg Trunc

Posted By: Taper_Mike
Date: Wednesday, 28 August 2013, at 7:49 a.m.

In Response To: 501 Essential Backgammon Problems #40 -- RO + Variant (Igor)


2O ' ' ' '5X '3X ' ' '3O

 ' ' ' '2X5O '4O ' '1O5X
64R-52H-54@-61
Position ID: 4HPwAQPg88gBMA Match ID: cAkHAAAAAAAA

# Ply Move Equity
1 R 11/4 -0.290541
 
0.4332110.0837810.001891-0.5667890.1443820.004716 -0.197005 -0.290541
0.0007290.0008780.000053-0.0007290.0013090.000102 0.001584 0.002835
 
  Truncated cubeful rollout (depth 5) with var.redn.  
  360 games, Mersenne Twister dice gen. with seed 725340825 and quasi-random dice  
  Play: world class 2-ply cubeful prune [world class]  
  keep the first 0 0-ply moves and up to 8 more moves within equity 0.16  
  Skip pruning for 1-ply moves.  
  Cube: 2-ply cubeful prune [world class]  
  Different evaluations after 2 plies:  
  Play: 1-ply cubeful prune  
  keep the first 0 0-ply moves and up to 8 more moves within equity 0.16  
  Cube: 2-ply cubeful prune [world class]  
  2 R 13/7 8/7 -0.315924 ( -0.025383)
 
0.4231580.0875910.002067-0.5768420.1423350.004975 -0.211335 -0.315924
0.0007210.0009790.000071-0.0007210.0010700.000135 0.001791 0.003384
 
  Truncated cubeful rollout (depth 5) with var.redn.  
  360 games, Mersenne Twister dice gen. with seed 725340825 and quasi-random dice  
  Play: world class 2-ply cubeful prune [world class]  
  keep the first 0 0-ply moves and up to 8 more moves within equity 0.16  
  Skip pruning for 1-ply moves.  
  Cube: 2-ply cubeful prune [world class]  
  Different evaluations after 2 plies:  
  Play: 1-ply cubeful prune  
  keep the first 0 0-ply moves and up to 8 more moves within equity 0.16  
  Cube: 2-ply cubeful prune [world class]  
  3 R 24/18 11/10 -0.329956 ( -0.039415)
 
0.4228020.0844850.002024-0.5771980.1499440.005793 -0.223625 -0.329956
0.0007010.0009010.000059-0.0007010.0011810.000123 0.001792 0.002968
 
  Truncated cubeful rollout (depth 5) with var.redn.  
  360 games, Mersenne Twister dice gen. with seed 725340825 and quasi-random dice  
  Play: world class 2-ply cubeful prune [world class]  
  keep the first 0 0-ply moves and up to 8 more moves within equity 0.16  
  Skip pruning for 1-ply moves.  
  Cube: 2-ply cubeful prune [world class]  
  Different evaluations after 2 plies:  
  Play: 1-ply cubeful prune  
  keep the first 0 0-ply moves and up to 8 more moves within equity 0.16  
  Cube: 2-ply cubeful prune [world class]  
  4 R 24/23 24/18 -0.334052 ( -0.043511)
 
0.4244620.0730170.001594-0.5755380.1477470.005007 -0.229219 -0.334052
0.0007420.0006220.000037-0.0007420.0011710.000101 0.001677 0.003131
 
  Truncated cubeful rollout (depth 5) with var.redn.  
  360 games, Mersenne Twister dice gen. with seed 725340825 and quasi-random dice  
  Play: world class 2-ply cubeful prune [world class]  
  keep the first 0 0-ply moves and up to 8 more moves within equity 0.16  
  Skip pruning for 1-ply moves.  
  Cube: 2-ply cubeful prune [world class]  
  Different evaluations after 2 plies:  
  Play: 1-ply cubeful prune  
  keep the first 0 0-ply moves and up to 8 more moves within equity 0.16  
  Cube: 2-ply cubeful prune [world class]  


Annotation
Truncated Rollout by Taper_Mike
2013-Aug-25
Version GNU Backgammon 0.90-mingw 20120806
64R-52H-54@-61-tm . sgf
[o P25 B39] /0.360t

64R-52H-54@-61 — Unlimited Games
Bot Seed Equity Nacbracs Link
GnuBg 0.xx 2-ply Trunc 725340825 –290.541 [o P25 B39] /0.360t Taper_Mike (above)
XG 2.10 XGR++ Eval [XGR++ seed] –261.3 [o P18 B29] "&e Taper_Mike
XG 2.10 3-ply, Cubes: XGR 18260878 –284 j[o B8 P16 U19] "<=25*10 5 Igor Erovenko

The GnuBg trunc does not really add anything new. It just gives me an excuse to put the move sequence in the subject of this post!

The one thing I did notice was how much better B = 24/18 11/10 did in Igor’s rollout compared to to its showing in the GnuBg trunc and XGR++.

Mike

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