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Rollout and OTB

Posted By: dc-ohio
Date: Tuesday, 21 April 2009, at 11:52 a.m.

In Response To: Checker up or Checker off? (dc-ohio)

I chose the non hitting play of 6/3 2/0. It seemed to me that getting to an even number of checkers was more important to the gammon than putting white on the bar.

Rollout was interesting to say the least:

The score (after 0 games) is: gnubg 15, user 6 (match to 21 points)

Move number 6: user to play 32

gnubg83


 '2X2X3X2X5X ' ' ' ' ' '

1O3O2O1X '1O ' ' ' ' ' '

user19

Position ID: ttsHAATdCAAAAA Match ID: QYmpAvAAMAAA

• user moves 6/4*/1

# Ply Move Equity
• 1 R 6/4*/1 +1.238
 
0.9970.2530.003-0.0030.0000.000 +1.238 +1.238
0.0000.0000.000-0.0000.0000.000 0.000 0.000
  
  Full cubeful rollout with var.redn.  
  4765 games, Mersenne Twister dice gen. with seed 818697944 and quasi-random dice  
  Play: 2-ply cubeful prune [world class]  
  keep the first 0 0-ply moves and up to 12 more moves within equity 0.16  
  Skip pruning for 1-ply moves.  
  Cube: 2-ply cubeful prune [world class]  
  2 R 6/3 2/off +1.219 ( -0.019)
 
1.0000.2320.000-0.0000.0000.000 +1.219 +1.219
0.0000.0000.000-0.0000.0000.000 0.000 0.000
  
  Full cubeful rollout with var.redn.  
  4764 games, Mersenne Twister dice gen. with seed 818697944 and quasi-random dice  
  Play: 2-ply cubeful prune [world class]  
  keep the first 0 0-ply moves and up to 12 more moves within equity 0.16  
  Skip pruning for 1-ply moves.  
  Cube: 2-ply cubeful prune [world class]  

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