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Re: Opening 4-1 (split) 5-2 reply (Ian)

Posted By: Ian Shaw
Date: Friday, 1 December 2006, at 9:04 a.m.

In Response To: 41S-52? (Ian) (Stick)

Here's mine. Both agree on the top play, but the next two are swapped. Both are within 1 sd of each other, though, so it looks like simple rollout uncertainty.

The key result from both rollouts is that build-and-split is correct with a 52. I agree with your conclusion, too. With a 54, splitting comes up to a point White really wants, encouraging an attack; the tempo hit helps to protect the split.

The score (after 0 games) is: gnubg 0, Ian 0

Move number 2: Ian on roll, cube decision?

gnubg	162
Ian	167
Position ID: 4HPhASjgc/ABMA Match ID: cAkAAAAAAAAA

#		Ply	Move	Equity
•	1	R	24/22 13/8	-0.1619
			0.4652 0.1206 0.0051 - 0.5348 0.1622 0.0060 -0.1120 -0.1619 0.0009 0.0009 0.0002 - 0.0009 0.0011 0.0003 0.0024 0.0063
			Full cubeful rollout with var.redn.
			3888 games, Mersenne Twister dice gen. with seed 1011400051 and quasi-random dice
			Stop when best play is enough JSDs ahead: limit 2.5 (min. 324 games)
			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]
	2	R	13/11 13/8	-0.1759 ( -0.0139)
			0.4598 0.1265 0.0049 - 0.5402 0.1618 0.0076 -0.1185 -0.1759 0.0009 0.0009 0.0002 - 0.0009 0.0011 0.0003 0.0024 0.0062
			Full cubeful rollout with var.redn.
			3888 games, Mersenne Twister dice gen. with seed 1011400051 and quasi-random dice
			Stop when best play is enough JSDs ahead: limit 2.5 (min. 324 games)
			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]
	3	R	24/22 6/1*	-0.2000 ( -0.0381)
			0.4563 0.1199 0.0048 - 0.5437 0.1644 0.0069 -0.1341 -0.2000 0.0017 0.0016 0.0003 - 0.0017 0.0019 0.0008 0.0045 0.0103
			Full cubeful rollout with var.redn.
			1505 games, Mersenne Twister dice gen. with seed 1011400051 and quasi-random dice
			Stop when best play is enough JSDs ahead: limit 2.5 (min. 324 games)
			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]
	4	R	13/11 6/1*	-0.2046 ( -0.0426)
			0.4554 0.1239 0.0047 - 0.5446 0.1733 0.0097 -0.1436 -0.2046 0.0019 0.0017 0.0004 - 0.0019 0.0021 0.0007 0.0051 0.0120
			Full cubeful rollout with var.redn.
			1338 games, Mersenne Twister dice gen. with seed 1011400051 and quasi-random dice
			Stop when best play is enough JSDs ahead: limit 2.5 (min. 324 games)
			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]
	5	0	13/6	-0.1808 ( -0.0189)
			0.4541 0.1225 0.0037 - 0.5459 0.1588 0.0062

Messages In This Thread

• 41S-52? (Ian)
  Stick -- Thursday, 30 November 2006, at 3:14 a.m.
  • Re: Opening 4-1 (split) 5-2 reply (Ian)
    Ian Shaw -- Friday, 1 December 2006, at 9:04 a.m.