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Rollout: A routine(?) opening decision

Posted By: Timothy Chow
Date: Friday, 9 July 2010, at 1:53 a.m.

In Response To: A routine(?) opening decision (Timothy Chow)

I played 24/23 13/11 here, though without much confidence since there are several plausible alternatives. In retrospect I can believe that 24/23 24/22 is best, for reasons stated by others, though I am still rather surprised at how far the rollout puts 24/23 24/22 ahead of the competition. (Could be that the rollout needs to be extended, of course.) I didn't roll out 13/11 6/5 or 24/23 6/4 but I doubt that they would fare any better.

gnubg	146
tchow	141
Position ID: sG+JATBsnsEBMA Match ID: cAkFAAAAIAAA

#		Ply	Move	Equity
•	1	R	24/23 24/22	-0.033
			0.498 0.184 0.016 - 0.502 0.204 0.008 -0.016 -0.033 0.001 0.002 0.001 - 0.001 0.001 0.001 0.004 0.011
			Full cubeful rollout with var.redn.
			1296 games, Mersenne Twister dice gen. with seed 890005005 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]
	2	R	24/23 13/11	-0.100 ( -0.067)
			0.485 0.182 0.015 - 0.515 0.214 0.011 -0.058 -0.100 0.002 0.002 0.001 - 0.002 0.002 0.001 0.005 0.012
			Full cubeful rollout with var.redn.
			1296 games, Mersenne Twister dice gen. with seed 890005005 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]
	3	R	24/22 6/5	-0.125 ( -0.091)
			0.485 0.187 0.018 - 0.515 0.224 0.013 -0.063 -0.125 0.002 0.002 0.001 - 0.002 0.002 0.001 0.004 0.011
			Full cubeful rollout with var.redn.
			1296 games, Mersenne Twister dice gen. with seed 890005005 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]
	4	R	24/21	-0.127 ( -0.094)
			0.477 0.170 0.014 - 0.523 0.202 0.009 -0.074 -0.127 0.001 0.002 0.000 - 0.001 0.002 0.000 0.004 0.010
			Full cubeful rollout with var.redn.
			1296 games, Mersenne Twister dice gen. with seed 890005005 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]

Messages In This Thread

• A routine(?) opening decision
  Timothy Chow -- Thursday, 8 July 2010, at 1:55 a.m.
  • A routine(?) opening decision
    John O'Hagan -- Thursday, 8 July 2010, at 2:22 a.m.
    • A routine(?) opening decision
      neilkaz -- Thursday, 8 July 2010, at 3:25 a.m.
    • Nactation
      Timothy Chow -- Thursday, 8 July 2010, at 4:03 a.m.
    • 43D-42P-43P-55P-61P-21
      Nack Ballard -- Thursday, 8 July 2010, at 6:15 a.m.
  • Rollout: A routine(?) opening decision
    Timothy Chow -- Friday, 9 July 2010, at 1:53 a.m.
    • Rollout: A routine(?) opening decision
      Casper van der Tak -- Friday, 9 July 2010, at 6:50 a.m.
      • Update
        Casper van der Tak -- Friday, 9 July 2010, at 7:03 a.m.
        • Update
          Nack Ballard -- Saturday, 10 July 2010, at 1:31 a.m.