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Bearoff cube decision -RO

Posted By: Daniel Murphy
Date: Saturday, 5 November 2011, at 5:51 p.m.

In Response To: Bearoff cube decision (Daniel Murphy)

Unlimited match. Blue on roll.

White	61
Blue	56
Position ID: de8OAADi9wAAAA Match ID: UQkAACAACAAE

Cube decision
Rollout cubeless equity		+0.5138
Cubeful equities:
1.	Double, take	+0.8827
2.	Double, pass	+1.0000	+0.1173
3.	No double	+0.8101	-0.0726
Proper cube action:		Redouble, take
Rollout details
Win W g W bg Lose L g L bg Cubeless Cubeful Player Blue owns 2-cube 0.7569 0.0000 0.0000 - 0.2431 0.0000 0.0000 +0.5138 +0.8101 Standard error 0.0000 0.0000 0.0000 - 0.0000 0.0000 0.0000 0.0001 0.0008 Player White owns 4-cube 0.7564 0.0000 0.0000 - 0.2436 0.0000 0.0000 +1.0255 +0.8827 Standard error 0.0000 0.0000 0.0000 - 0.0000 0.0000 0.0000 0.0002 0.0010
Full cubeful rollout with var.redn.
1837 games, Mersenne Twister dice gen. with seed 932765888 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]

Cubeless GWC in the rollout after D/T is 75.64% and that's accurate (verified with a rollout at DMP). Equity in the rollout after D/T is 0.8827, which is the equivalent of winning 72.06% in a gammonless position (as this is). So one could say that for the taker in this position, holding the cube is worth the equivalent of 3.58% GWC.

Messages In This Thread

• Bearoff cube decision
  Daniel Murphy -- Friday, 28 October 2011, at 7:54 p.m.
  • Bearoff cube decision
    kruidenbuiltje -- Friday, 28 October 2011, at 8:19 p.m.
    • Bearoff cube decision
      Mr Majestyk -- Friday, 28 October 2011, at 11:57 p.m.
      • Bearoff cube decision
        Bob Koca -- Saturday, 29 October 2011, at 12:29 a.m.
        • Bearoff cube decision
          Mr Majestyk -- Saturday, 29 October 2011, at 1:05 a.m.
  • Bearoff cube decision
    neilkaz -- Saturday, 29 October 2011, at 12:42 a.m.
    • Bearoff cube decision
      Mr Majestyk -- Saturday, 29 October 2011, at 1:06 a.m.
  • Bearoff cube decision
    Ian Shaw -- Saturday, 29 October 2011, at 4:17 p.m.
  • Bearoff cube decision -RO
    Daniel Murphy -- Saturday, 5 November 2011, at 5:51 p.m.