Jun 27

3-Point Anchor (1)

By ace Backgammon, Where Gnu errs Add comments

The score (after 0 games) is: gnubg 0, ace 0 (match to 17 points)

Move number 15: ace on roll, cube decision?


+-24-23-22-21-20-19-+---+-18-17-16-15-14-13-+
|  ' 1X 2X 2X 2X 3X |   |  ' 2X  ' 1X  '  ' |
|                   |   |                   |
|                   | 1 |                   |
|  ' 1O 2X 2O  ' 5O |   | 3O 2O 2O  '  '  ' |
+--1--2--3--4--5--6-+---+--7--8--9-10-11-12-+

Pip counts: gnubg 114, ace 95
Position ID: 2nYmAAwy320AAA Match ID: cAkgAgAAAAAA

• ace doubles

Cube decision
2-ply cubeless equity +0.483 (Money: +0.482)
  0.737 0.024 0.000 – 0.263 0.016 0.000
Cubeful equities:
1. Double, take +0.806  
2. Double, pass +1.000 +0.194
3. No double +0.796 -0.010
Proper cube action: Double, take

 


Cube decision
Rollout cubeless equity +0.550 (Money: +0.549)
Cubeful equities:
1. Double, pass +1.000  
2. Double, take +1.020 +0.020
3. No double +0.976 -0.024
Proper cube action: Double, pass
Rollout details
  Win W g W bg   Lose L g L bg Cubeless Cubeful
Centered 1-cube 0.770 0.021 0.000 - 0.230 0.011 0.000 +0.550 +0.976
Standard error 0.001 0.001 0.000 - 0.001 0.001 0.000 0.003 0.008
Player gnubg owns 2-cube 0.776 0.020 0.000 - 0.224 0.012 0.000 +1.152 +1.020
Standard error 0.001 0.001 0.000 - 0.001 0.001 0.000 0.006 0.008
Full cubeful rollout with var.redn.
648 games, Mersenne Twister dice gen. with seed 1739212666 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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