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21$-21$-55P-53P-41 — Index to Rollouts

Posted By: Taper_Mike
Date: Monday, 1 April 2013, at 11:07 p.m.

In Response To: RO TCTC (neilkaz)


2O ' ' '2X4X '3X ' '1X2O

2X '2O '1O4O '3O ' '1O3X
21$-21$-55P-53P-41
Position ID: sOfIATBMz5EBMA Match ID: cAkGAAAAAAAA

# Ply Move Equity
1 R 11/7 6/5 +0.018366
 
0.4972550.1821710.012380-0.5027450.1621910.008836 +0.018034 +0.018366
0.0008690.0011950.000276-0.0008690.0011210.000155 0.002550 0.004872
 
  Truncated cubeful rollout (depth 5) with var.redn.  
  360 games, Mersenne Twister dice gen. with seed 678545186 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 8/4 6/5 +0.002071 ( -0.016295)
 
0.4945810.1867530.012209-0.5054190.1715420.011992 +0.004592 +0.002071
0.0008380.0011350.000275-0.0008380.0009200.000262 0.002459 0.004404
 
  Truncated cubeful rollout (depth 5) with var.redn.  
  360 games, Mersenne Twister dice gen. with seed 678545186 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 8/4 5/4 -0.011684 ( -0.030050)
 
0.4880690.1763870.011791-0.5119310.1640620.007891 -0.007637 -0.011684
0.0009070.0012400.000216-0.0009070.0011580.000180 0.002376 0.004178
 
  Truncated cubeful rollout (depth 5) with var.redn.  
  360 games, Mersenne Twister dice gen. with seed 678545186 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-Apr-01
Version GNU Backgammon 0.90-mingw 20120806
21$-21$-55P-53P-41-tm.sgf
[N A16 p30] /0.360t

21$-21$-55P-53P-41 — Unlimited Games
Bot Seed Equity Nacbracs Link
GnuBg 2-ply Trunc 678545186 +18.366 [N A16 p30] /0.360t Taper_Mike (above)
XG 2.10.192.pre-release 3-ply, Cubes: XGR 78623594 +13.7 [N=A p25] "<=5 Neil Kazaross
XG 2.10.192.pre-release XGR++ Eval [XGR++ seed] +30.5 [N A3 p29] "&e Neil Kazaross

21$-21$-55P-53P-41 — Nactation Key
FamilyNactationTraditional NotationNote
AttackA 8/4, 6/5
Attacka 8/4, 5/4
NearN 11/7, 6/5
PointP 11/7, 8/7
Pointp 8/4, 5/4

Considering that it contains only one full rollout, this is not much of an index. My real motive in posting is just to get the move sequence into the subject line. That way, future searches will pop it up.

This also gives me another chance to recommend the settings for GNU Backgammon that simulate an XG Roller++ eval. On a multi-core system, it does not take much longer for GnuBg to similate XGR++ than it does to do a 4-ply eval. Although the results are usually much better, in this case Timothy’s 4-ply GnuBg eval comes closer to matching Neil’s full rollout.

Mike

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