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GNU rollout

Posted By: neilkaz
Date: Thursday, 22 March 2007, at 3:35 p.m.

In Response To: Rollout(s) (Stick)

The main lesson in the problem is the SCORE ! Look at the difference between cubeful and cubeless results and you'll see why our tremendous recube vig renders Stick's cube as little more than a bluff. Don't automatically pass when you've danced with both checkers and the opp has 4 checkers back, either.

The score (after 0 games) is: gnubg 7, ntk 0 (match to 11 points)

Move number 3: gnubg on roll, cube decision?

gnubg161


 ' ' '1X2X2X1X3X1X ' '2O

 ' '1X2O3X3O '3O '3O '1X

ntk156

Position ID: mHOOAWBo60LACQ Match ID: MAFgAXAAAAAA

• gnubg doubles

Alert: wrong double ( -0.267)!

Cube decision
Rollout cubeless equity +0.476(Money: +0.538)
Cubeful equities:
1.No double +0.605 
2.Double, pass +1.000 +0.395
3.Double, take +0.338 -0.267
Proper cube action:No double, take (40.3%)
Rollout details
 WinW gW bg LoseL gL bgCubelessCubeful
Centered 1-cube0.6680.2470.022-0.3320.0660.002 +0.476 +0.605
Standard error0.0010.0020.002-0.0010.0010.000 0.004 0.008
Player ntk owns 2-cube0.6680.2630.033-0.3320.0590.002 +0.857 +0.338
Standard error0.0010.0030.002-0.0010.0010.000 0.008 0.012
Full cubeful rollout with var.redn.
3376 games, Mersenne Twister dice gen. with seed 1059740046 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]

 

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