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Rollout: Backgame!

Posted By: Daniel Murphy
Date: Tuesday, 10 July 2012, at 12:09 a.m.

In Response To: Rollout: Backgame! (Timothy Chow)

Does your XG handle early hits correctly?

For example, double / take / 65 / (cube action?) hit / fan -> cube action?

Big Gnubg evaluation error on odd and even ply:

The score (after 0 games) is: White 1, Blue 4 (match to 7 points)

Move number 7: White on roll, cube decision?

White	126
Blue	70
Position ID: 5n0AAKhtGwAKBg Match ID: AQHgABAAIAAE

• White doubles

Cube decision
Rollout cubeless equity		+0.390527	(Money: +0.26517 +0.390527)
Cubeful equities:
1.	Double, pass	+1.000000
2.	Double, take	+1.115353	+0.115353
3.	No double	+0.950127	-0.049873
Proper cube action:		Redouble, pass
Rollout details
Win W g W bg Lose L g L bg Cubeless Cubeful Player White owns 2-cube 0.717076 0.000000 0.000000 - 0.282924 0.136837 0.032138 +0.390527 +0.950127 Standard error 0.002799 0.000000 0.000000 - 0.002799 0.006357 0.006553 0.008246 0.010939 Player Me-1 owns 4-cube 0.745183 0.000000 0.000000 - 0.254817 0.151869 0.040712 +1.115353 +1.115353 Standard error 0.003320 0.000000 0.000000 - 0.003320 0.008309 0.007205 0.012605 0.012605
Full cubeful rollout with var.redn.
335 games, Mersenne Twister dice gen. with seed 920429565 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: 1-ply cubeful prune

Annotation

Cube analysis
3-ply cubeless equity +0.283159 (Money: +0.23369 +0.283159)
0.689551 0.000000 0.000000 - 0.310449 0.134437 0.010966
Cubeful equities:
1. Double, take +0.904151
2. Double, pass +1.000000 ( +0.095849)
3. No double +0.843765 ( -0.060386)
Proper cube action: Redouble, take

Cube analysis
4-ply cubeless equity +0.238139 (Money: +0.18777 +0.238139)
0.668348 0.000000 0.000000 - 0.331652 0.138103 0.010817
Cubeful equities:
1. Double, take +0.823658
2. Double, pass +1.000000 ( +0.176342)
3. No double +0.799163 ( -0.024495)
Proper cube action: Redouble, take

Messages In This Thread

• Backgame!
  Timothy Chow -- Sunday, 8 July 2012, at 7:19 p.m.
  • Backgame!
    ali -- Sunday, 8 July 2012, at 8:14 p.m.
  • Backgame!
    Ian Shaw -- Sunday, 8 July 2012, at 10:39 p.m.
  • Backgame!
    mick dyett -- Monday, 9 July 2012, at 10:06 a.m.
    • Backgame!
      Daniel Murphy -- Monday, 9 July 2012, at 5:35 p.m.
      • Backgame!
        mick dyett -- Tuesday, 10 July 2012, at 3:59 a.m.
  • Backgame!
    ah_clem -- Monday, 9 July 2012, at 1:45 p.m.
  • Backgame!
    Neil Robins -- Monday, 9 July 2012, at 3:16 p.m.
    • Backgame!
      Timothy Chow -- Monday, 9 July 2012, at 11:29 p.m.
      • D/T-63-C and D/T-65-C Rollouts
        Neil Robins -- Tuesday, 10 July 2012, at 1:01 p.m.
        • D/T-63-C and D/T-65-C Rollouts
          Timothy Chow -- Tuesday, 10 July 2012, at 2:26 p.m.
  • Backgame!
    Chuck Bower -- Monday, 9 July 2012, at 5:23 p.m.
  • Rollout: Backgame!
    Timothy Chow -- Monday, 9 July 2012, at 11:28 p.m.
    • Rollout: Backgame!
      Daniel Murphy -- Tuesday, 10 July 2012, at 12:09 a.m.
      • Rollout: Backgame!
        Timothy Chow -- Wednesday, 11 July 2012, at 3:34 p.m.
    • Rollout: Backgame!
      Marv Porten -- Tuesday, 10 July 2012, at 12:10 a.m.
      • Rollout: Backgame!
        Daniel Murphy -- Tuesday, 10 July 2012, at 12:53 a.m.
    • Rollout: Backgame!
      Stick -- Tuesday, 10 July 2012, at 6:19 a.m.