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Rollout: Containment play #2

Posted By: Timothy Chow
Date: Friday, 10 September 2010, at 12:57 a.m.

In Response To: Containment play #2 (Timothy Chow)

Thanks for the analyses, especially John O'Hagan's point that 17/11 actually gives quite a few cover numbers.

Sorry for the confusing rollout display below. I used "poor man's parallelism" to roll out different plays on different processors, so the results are not collated properly. Bottom line is that it seems that 15/11 13/11 and 17/11 are tied for best. I played 17/15 13/9, which GNU 2-ply thinks is 11th best and 0.167 back, but the rollout indicates that it's not that bad and puts it ahead of GNU 2-ply's 2nd choice of 13/11 13/9. It's possible that some other play would fare well if I were to roll it out but I think I've spent enough CPU time on this one.

gnubg	60
tchow	150
Position ID: 7+4BAECsDThbAA Match ID: UQkRADAAGAAA

#		Ply	Move	Equity
•	1	R	15/11 13/11	+0.085
			0.535 0.030 0.001 - 0.465 0.299 0.001 -0.199 +0.085 0.002 0.001 0.000 - 0.002 0.002 0.000 0.004 0.007
			Full cubeful rollout with var.redn.
			1296 games, Mersenne Twister dice gen. with seed 900286781 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	13/11 13/9	+0.018 ( -0.067)
			0.521 0.030 0.000 - 0.479 0.336 0.003 -0.266 +0.018 0.002 0.001 0.000 - 0.002 0.002 0.000 0.004 0.007
			Full cubeful rollout with var.redn.
			1296 games, Mersenne Twister dice gen. with seed 900286781 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]

#		Ply	Move	Equity
•	1	R	17/11	+0.081
			0.531 0.031 0.001 - 0.469 0.295 0.000 -0.203 +0.081 0.002 0.001 0.000 - 0.002 0.002 0.000 0.004 0.007
			Full cubeful rollout with var.redn.
			1296 games, Mersenne Twister dice gen. with seed 900143465 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	16/12 13/11	+0.047 ( -0.034)
			0.526 0.031 0.001 - 0.474 0.326 0.003 -0.243 +0.047 0.002 0.001 0.000 - 0.002 0.002 0.000 0.004 0.007
			Full cubeful rollout with var.redn.
			1296 games, Mersenne Twister dice gen. with seed 900143465 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]

#		Ply	Move	Equity
•	1	R	17/15 13/9	+0.041
			0.522 0.031 0.000 - 0.478 0.311 0.000 -0.237 +0.041 0.002 0.001 0.000 - 0.002 0.002 0.000 0.005 0.007
			Full cubeful rollout with var.redn.
			1296 games, Mersenne Twister dice gen. with seed 900037681 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

• Containment play #2
  Timothy Chow -- Thursday, 9 September 2010, at 2:21 a.m.
  • Containment play #2
    Casper van der Tak -- Thursday, 9 September 2010, at 2:40 a.m.
  • Containment play #2
    John O'Hagan -- Thursday, 9 September 2010, at 3:05 a.m.
  • Containment play #2
    Bill Riles -- Thursday, 9 September 2010, at 3:10 a.m.
  • Rollout: Containment play #2
    Timothy Chow -- Friday, 10 September 2010, at 12:57 a.m.