BGonline.org Forums

Rollout of old position

Posted By: Timothy Chow
Date: Monday, 9 November 2009, at 1:29 a.m.

Some time ago, Stick posted some positions from training games that he and MCG played against GNU 2-ply. I found this position quite interesting. Stick may have already posted a rollout of it somewhere, but if so, I missed it, so I rolled it out myself.

Hitting the outfield blot comes out ahead of making the 4-point. Interestingly, the bizarre-looking bar/21 bar/23 13/11* is a contender, which I don't think anybody suggested.

The score (after 3 games) is: gnubg 4, Stick/MCG 4 (match to 7 points)

gnubg	182
Stick/MCG	173
Position ID: 4BWziCGMb2AAag Match ID: cAnpAEAAIAAA

#		Ply	Move	Equity
•	1	R	bar/23(2) 13/11*(2)	+0.104
			0.506 0.231 0.031 - 0.494 0.129 0.009 +0.135 +0.104 0.002 0.002 0.002 - 0.002 0.002 0.001 0.007 0.015
			Full cubeful rollout with var.redn.
			2592 games, Mersenne Twister dice gen. with seed 869686880 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	bar/21 bar/23 13/11*	+0.080 ( -0.023)
			0.497 0.238 0.035 - 0.503 0.129 0.013 +0.162 +0.080 0.002 0.002 0.002 - 0.002 0.002 0.002 0.009 0.016
			Full cubeful rollout with var.redn.
			2592 games, Mersenne Twister dice gen. with seed 869686880 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	bar/23(2) 6/4(2)	+0.073 ( -0.031)
			0.503 0.204 0.023 - 0.497 0.136 0.012 +0.087 +0.073 0.002 0.002 0.002 - 0.002 0.002 0.001 0.006 0.015
			Full cubeful rollout with var.redn.
			2592 games, Mersenne Twister dice gen. with seed 869686880 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	bar/21(2)	-0.074 ( -0.178)
			0.481 0.168 0.012 - 0.519 0.135 0.010 -0.010 -0.074 0.002 0.002 0.001 - 0.002 0.002 0.002 0.006 0.012
			Full cubeful rollout with var.redn.
			2592 games, Mersenne Twister dice gen. with seed 869686880 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

• Rollout of old position
  Timothy Chow -- Monday, 9 November 2009, at 1:29 a.m.
  • Rollout of old position
    misja -- Monday, 9 November 2009, at 9:57 a.m.
    • Rollout of old position
      Timothy Chow -- Monday, 9 November 2009, at 3:28 p.m.