BGonline.org Forums

Rollout

Posted By: Stick
Date: Thursday, 23 April 2009, at 6:56 a.m.

In Response To: Vegas SJ - Munitz -2 -4 Checker Play (Stick)

Very interesting I thought and I may have even learned something, go figure. Richard's play, the correct play, not only forms a gapped prime but also brings another builder into range whereas play B is somewhat inflexible, doesn't block as many numbers, but does make the ace point which is good for this score. As Rich mentioned afterwards, it's clear to make the prime at any other score.

The other play has the bonus of duping 4s to escape but it isn't enough to override the other checker in the zone allowing PoH #s + P&C #s next turn if the blot stays. It's also clearly best if it becomes a race.

The score (after 0 games) is: gnubg 11, user 13 (match to 15 points)

gnubg	117
user	122
Position ID: uDuDAwjNrMIjAA Match ID: EQHnAbAAaAAA

#		Ply	Move	Equity
•	1	R	13/7 9/8	+0.0877
			0.4833 0.0606 0.0040 - 0.5167 0.1719 0.0245 +0.0877 +0.0877 0.0038 0.0030 0.0038 - 0.0038 0.0130 0.0077 0.0082 0.0082
			Full cubeful rollout with var.redn.
			229 games, Mersenne Twister dice gen. with seed 817970751 and quasi-random dice
			Play: 2-ply cubeful prune [world class]
			keep the first 0 0-ply moves and up to 12 more moves within equity 0.16
			Skip pruning for 1-ply moves.
			Cube: 2-ply cubeful prune [world class]
	2	R	9/8 7/1	+0.0474 ( -0.0403)
			0.4601 0.0636 0.0013 - 0.5399 0.1721 0.0118 +0.0474 +0.0474 0.0035 0.0033 0.0003 - 0.0035 0.0149 0.0054 0.0087 0.0087
			Full cubeful rollout with var.redn.
			229 games, Mersenne Twister dice gen. with seed 817970751 and quasi-random dice
			Play: 2-ply cubeful prune [world class]
			keep the first 0 0-ply moves and up to 12 more moves within equity 0.16
			Skip pruning for 1-ply moves.
			Cube: 2-ply cubeful prune [world class]

Messages In This Thread

• Vegas SJ - Munitz -2 -4 Checker Play
  Stick -- Wednesday, 22 April 2009, at 5:09 a.m.
  • Vegas SJ - Munitz -2 -4 Checker Play
    David Rockwell -- Wednesday, 22 April 2009, at 4:27 p.m.
  • Vegas SJ - Munitz -2 -4 Checker Play
    Rich Munitz -- Thursday, 23 April 2009, at 2:49 a.m.
  • Rollout
    Stick -- Thursday, 23 April 2009, at 6:56 a.m.