Robertie Position 62

The first thing to note is that GNU thinks Black should have doubled before rolling; it is a huge pass.

Cube decision
Rollout cubeless equity +0.754 
Cubeful equities:
1.Double, pass +1.000 
2.Double, take +1.574 +0.574
3.No double +0.956 -0.044
Proper cube action:Double, pass
Rollout details
 WinW gW bg LoseL gL bgCubelessCubeful
Centered 1-cube0.8130.1430.005-0.1870.0210.000 +0.754 +0.956
Standard error0.0010.0010.000-0.0010.0000.000 0.002 0.003
Player gnubg owns 2-cube0.8230.2300.005-0.1770.0340.001 +1.692 +1.574
Standard error0.0010.0020.000-0.0010.0010.000 0.006 0.008
Full cubeful rollout with var.redn.
1296 games, Mersenne Twister dice gen. with seed 841672192 and quasi-random dice
Play: supremo 2-ply cubeful prune [world class]
keep the first 0 0-ply moves and up to 16 more moves within equity 0.32
Skip pruning for 1-ply moves.
Cube: 2-ply cubeful prune [world class]

 

If the cube is really in the center, then it does not matter much how the roll is played since Black will be cashing next turn. However, if we give White the cube, then GNU agrees with Robertie as far as the checker play is concerned:

# Ply Move Equity
• 1 R 13/11* 10/9 +0.993
 
0.8720.3040.010-0.1280.0190.001 +1.038 +0.993
0.0010.0020.001-0.0010.0010.000 0.003 0.004
  
  Full cubeful rollout with var.redn.  
  1296 games, Mersenne Twister dice gen. with seed 865876043 and quasi-random dice  
  Play: supremo 2-ply cubeful prune [world class]  
  keep the first 0 0-ply moves and up to 16 more moves within equity 0.32  
  Skip pruning for 1-ply moves.  
  Cube: 2-ply cubeful prune [world class]  
  2 R 13/11* 6/5 +0.984 ( -0.009)
 
0.8720.2970.009-0.1280.0200.001 +1.030 +0.984
0.0010.0020.000-0.0010.0010.000 0.003 0.003
  
  Full cubeful rollout with var.redn.  
  1296 games, Mersenne Twister dice gen. with seed 865876043 and quasi-random dice  
  Play: supremo 2-ply cubeful prune [world class]  
  keep the first 0 0-ply moves and up to 16 more moves within equity 0.32  
  Skip pruning for 1-ply moves.  
  Cube: 2-ply cubeful prune [world class]  
  3 R 13/11*/10 +0.972 ( -0.021)
 
0.8660.2970.008-0.1340.0190.001 +1.019 +0.972
0.0010.0020.001-0.0010.0010.000 0.003 0.004
  
  Full cubeful rollout with var.redn.  
  1296 games, Mersenne Twister dice gen. with seed 865876043 and quasi-random dice  
  Play: supremo 2-ply cubeful prune [world class]  
  keep the first 0 0-ply moves and up to 16 more moves within equity 0.32  
  Skip pruning for 1-ply moves.  
  Cube: 2-ply cubeful prune [world class]