Robertie Position 266

GNU thinks that Black is too good to double here. Compare this position to Position 383.

Alert: wrong double ( -0.061)! [doubtful]

Cube decision
Rollout cubeless equity +0.789 
Cubeful equities:
1.No double +1.061 
2.Double, take +1.545 +0.484
3.Double, pass +1.000 -0.061
Proper cube action:Too good to redouble, pass (11.3%)
Rollout details
 WinW gW bg LoseL gL bgCubelessCubeful
Player tchow owns 2-cube0.7960.2410.008-0.2040.0530.000 +0.789 +1.061
Standard error0.0010.0020.001-0.0010.0010.000 0.003 0.006
Player gnubg owns 4-cube0.8130.2370.010-0.1870.0510.000 +1.644 +1.545
Standard error0.0010.0030.001-0.0010.0010.000 0.008 0.011
Full cubeful rollout with var.redn.
1296 games, Mersenne Twister dice gen. with seed 841776796 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]