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Rollout and variants: Attack or prime?

Posted By: Timothy Chow
Date: Tuesday, 17 August 2010, at 11:01 p.m.

In Response To: Attack or prime? (Timothy Chow)

Attacking is a whopper here. White's board is too strong and Blue has only one direct cover. Change either of these latter two factors and attacking trumps priming, as the variants below illustrate.

gnubg	96
tchow	140
Position ID: 7mzDABBsm5IABw Match ID: cAkZAAAAAAAA

#		Ply	Move	Equity
•	1	R	13/7 9/7	+0.352
			0.586 0.111 0.004 - 0.414 0.170 0.003 +0.115 +0.352 0.001 0.002 0.000 - 0.001 0.001 0.000 0.003 0.008
			Full cubeful rollout with var.redn.
			1296 games, Mersenne Twister dice gen. with seed 894426248 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	9/7 8/2*	+0.205 ( -0.147)
			0.558 0.128 0.004 - 0.442 0.239 0.012 -0.002 +0.205 0.001 0.001 0.000 - 0.001 0.001 0.000 0.003 0.007
			Full cubeful rollout with var.redn.
			1296 games, Mersenne Twister dice gen. with seed 894426248 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]

---

Variant 1:

gnubg	96
tchow	135
Position ID: 7mzDABBsO4UABw Match ID: cAkZAAAAAAAA

#		Ply	Move	Equity
•	1	R	9/7 8/2*	+0.336
			0.576 0.139 0.004 - 0.424 0.197 0.007 +0.092 +0.336 0.001 0.002 0.000 - 0.001 0.001 0.000 0.003 0.009
			Full cubeful rollout with var.redn.
			1296 games, Mersenne Twister dice gen. with seed 893386779 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	13/7 9/7	+0.231 ( -0.105)
			0.553 0.114 0.003 - 0.447 0.146 0.002 +0.075 +0.231 0.001 0.002 0.000 - 0.001 0.001 0.000 0.003 0.008
			Full cubeful rollout with var.redn.
			1296 games, Mersenne Twister dice gen. with seed 893386779 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]

---

Variant 2 (this decision is close):

gnubg	108
tchow	140
Position ID: nLvDABBsm5IABw Match ID: cAkZAAAAAAAA

#		Ply	Move	Equity
•	1	R	9/7 8/2*	+0.150
			0.553 0.114 0.002 - 0.447 0.182 0.008 +0.032 +0.150 0.001 0.001 0.000 - 0.001 0.001 0.000 0.003 0.007
			Full cubeful rollout with var.redn.
			1296 games, Mersenne Twister dice gen. with seed 893779885 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	13/7 9/7	+0.130 ( -0.020)
			0.546 0.089 0.003 - 0.454 0.142 0.003 +0.039 +0.130 0.001 0.001 0.000 - 0.001 0.001 0.000 0.003 0.006
			Full cubeful rollout with var.redn.
			1296 games, Mersenne Twister dice gen. with seed 893779885 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

• Attack or prime?
  Timothy Chow -- Monday, 16 August 2010, at 9:19 p.m.
  • Attack or prime?
    Keene -- Monday, 16 August 2010, at 9:25 p.m.
  • Attack or prime?
    neilkaz -- Monday, 16 August 2010, at 10:21 p.m.
  • Rollout and variants: Attack or prime?
    Timothy Chow -- Tuesday, 17 August 2010, at 11:01 p.m.