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Opening 64 at Gammon Go

Posted By: Ian Shaw
Date: Thursday, 22 December 2011, at 8:38 a.m.

I couldn't find a rollout posted for this play when discussing it recently. No surprises, but here it is for the record.

The score (after 0 games) is: White 2, Blue 1 (match to 3 points, Crawford game)

Move number 3: Blue to play 64

White	167
Blue	167
Position ID: 4HPwATDgc/ABMA Match ID: 8AlzACAACAAE

#		Ply	Move	Equity
	1	R	8/2 6/2	+0.319
			0.506 0.148 0.026 - 0.494 0.196 0.033 +0.319 +0.319 0.001 0.001 0.001 - 0.001 0.002 0.001 0.002 0.002
			10369 games
	2	R	24/18 13/9	+0.295 ( -0.024)
			0.513 0.129 0.017 - 0.487 0.197 0.031 +0.295 +0.295 0.001 0.001 0.001 - 0.001 0.002 0.001 0.002 0.002
			10369 games
•	3	R	13/9 13/7	+0.286 ( -0.032)
			0.492 0.145 0.024 - 0.508 0.232 0.046 +0.286 +0.286 0.001 0.001 0.001 - 0.001 0.002 0.001 0.003 0.003
			Full cubeful rollout with var.redn.
			10368 games
	4	R	24/14	+0.270 ( -0.049)
			0.510 0.120 0.016 - 0.490 0.190 0.025 +0.270 +0.270 0.001 0.001 0.001 - 0.001 0.002 0.001 0.002 0.002
			10368 games, Mersenne Twister dice gen. with seed 936794760 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: 2-ply cubeful prune [world class]