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Rollouts of cube action

Posted By: Timothy Chow
Date: Friday, 7 May 2010, at 2:45 a.m.

In Response To: Scoreless vs. 3a3a (Carlo Melzi)

Big double at 3a3a, small double scoreless (though maybe a longer rollout is needed for the latter).

I'm currently rolling out the checker play and will post when done.


The score (after 0 games) is: gnubg 0, tchow 0 (match to 3 points)

tchow on roll, cube decision?

gnubg133


2O '3X '3X3X '2X ' ' ' '

1X2O '2O '3O2O3O1O ' '2X

tchow125

Position ID: nDuDAVBmbhcAMA Match ID: cAlgAAAAAAAA

Cube decision
Rollout cubeless equity +0.511(Money: +0.424)
Cubeful equities:
1.Double, take +0.785
2.Double, pass +1.000 +0.215
3.No double +0.630 -0.155
Proper cube action:Double, take
Rollout details
WinW gW bg LoseL gL bgCubelessCubeful
Centered 1-cube0.6180.3110.017-0.3820.1270.012 +0.511 +0.630
Standard error0.0010.0020.001-0.0010.0020.001 0.004 0.011
Player gnubg owns 2-cube0.6270.3200.027-0.3730.1460.016 +1.226 +0.785
Standard error0.0020.0040.002-0.0020.0040.002 0.014 0.016
Full cubeful rollout with var.redn.
1296 games, Mersenne Twister dice gen. with seed 852199751 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]


Unlimited game: tchow on roll, cube decision?

gnubg133


2O '3X '3X3X '2X ' ' ' '

1X2O '2O '3O2O3O1O ' '2X

tchow125

Position ID: nDuDAVBmbhcAMA Match ID: cAkAAAAAAAAA

Cube decision
Rollout cubeless equity +0.412
Cubeful equities:
1.Double, take +0.589
2.Double, pass +1.000 +0.411
3.No double +0.565 -0.024
Proper cube action:Double, take
Rollout details
WinW gW bg LoseL gL bgCubelessCubeful
Centered 1-cube0.6140.3010.014-0.3860.1250.007 +0.412 +0.565
Standard error0.0010.0020.000-0.0010.0010.000 0.003 0.009
Player gnubg owns 2-cube0.6280.3060.011-0.3720.1200.007 +0.895 +0.589
Standard error0.0020.0020.001-0.0020.0010.000 0.009 0.013
Full cubeful rollout with var.redn.
1296 games, Mersenne Twister dice gen. with seed 852476452 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]

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