Robertie Position 129

Robertie writes that “the right play is hitting two.” GNU agrees, but disagrees about which two to hit. Robertie does not even mention 13/10*/5* as a candidate, and even GNU 4-ply thinks that 13/10*/5* is a blunder that loses 0.137 equity.

# Ply Move Equity
• 1 R 13/10*/5* -0.812
 
0.3710.0970.005-0.6290.4020.015 -0.572 -0.812
0.0010.0010.000-0.0010.0010.000 0.002 0.007
  
  Full cubeful rollout with var.redn.  
  10368 games, Mersenne Twister dice gen. with seed 845708050 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 18/15*/10* -0.834 ( -0.022)
 
0.3710.0910.004-0.6290.3830.033 -0.580 -0.834
0.0010.0010.000-0.0010.0010.001 0.002 0.006
  
  Full cubeful rollout with var.redn.  
  10368 games, Mersenne Twister dice gen. with seed 845708050 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 21/18 13/8 -0.951 ( -0.140)
 
0.2560.0450.002-0.7440.1330.003 -0.578 -0.951
0.0020.0010.000-0.0020.0020.000 0.004 0.010
  
  Full cubeful rollout with var.redn.  
  1296 games, Mersenne Twister dice gen. with seed 864800212 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]  
  4 R 13/8 6/3 -0.991 ( -0.180)
 
0.3080.0720.004-0.6920.3130.005 -0.625 -0.991
0.0020.0010.000-0.0020.0030.001 0.004 0.012
  
  Full cubeful rollout with var.redn.  
  1296 games, Mersenne Twister dice gen. with seed 846059207 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]