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Rollouts: This seems to be a very subtle position!

Posted By: Timothy Chow
Date: Wednesday, 28 April 2010, at 3:31 a.m.

In Response To: Rollouts: This seems to be a very subtle position! (Martin)

Martin wrote:

I suspect that after cubing 13/8 10/4 will be lots behind at the score.

The rollout finished. 24/18*/13 does come out on top if the cube is turned, but 13/8 10/4 is close behind.

I still feel that there's more to be understood about this position but I think I'm going to move on for now.

The score (after 0 games) is: gnubg 2, tchow 3 (match to 7 points)

Move number 4: tchow to play 65

gnubg	148
tchow	147
Position ID: 4OvIAyBoZ+IDIA Match ID: QQn3ACAAGAAA

#		Ply	Move	Equity
•	1	R	24/18*/13	+0.286
			0.669 0.168 0.015 - 0.331 0.068 0.005 +0.488 +0.286 0.002 0.003 0.002 - 0.002 0.002 0.001 0.006 0.009
			Full cubeful rollout with var.redn.
			1296 games, Mersenne Twister dice gen. with seed 855041640 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	13/8 10/4	+0.261 ( -0.025)
			0.638 0.208 0.010 - 0.362 0.074 0.003 +0.474 +0.261 0.002 0.003 0.002 - 0.002 0.002 0.001 0.005 0.007
			Full cubeful rollout with var.redn.
			1296 games, Mersenne Twister dice gen. with seed 855041640 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	24/18* 13/8	+0.255 ( -0.031)
			0.645 0.207 0.024 - 0.355 0.088 0.008 +0.465 +0.255 0.002 0.004 0.003 - 0.002 0.002 0.001 0.006 0.009
			Full cubeful rollout with var.redn.
			1296 games, Mersenne Twister dice gen. with seed 855041640 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	24/18* 6/1*	+0.220 ( -0.066)
			0.623 0.238 0.019 - 0.377 0.105 0.008 +0.457 +0.220 0.002 0.004 0.002 - 0.002 0.002 0.002 0.007 0.009
			Full cubeful rollout with var.redn.
			1296 games, Mersenne Twister dice gen. with seed 855041640 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]
	5	R	24/18* 10/5	+0.199 ( -0.087)
			0.629 0.201 0.027 - 0.371 0.093 0.007 +0.426 +0.199 0.002 0.004 0.003 - 0.002 0.002 0.001 0.006 0.008
			Full cubeful rollout with var.redn.
			1296 games, Mersenne Twister dice gen. with seed 855041640 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]
	6	R	10/4 6/1*	+0.198 ( -0.088)
			0.609 0.237 0.016 - 0.391 0.089 0.007 +0.449 +0.198 0.002 0.003 0.002 - 0.002 0.002 0.001 0.006 0.008
			Full cubeful rollout with var.redn.
			1296 games, Mersenne Twister dice gen. with seed 855041640 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

• 4-away/5-away checker play
  Timothy Chow -- Saturday, 24 April 2010, at 8:47 p.m.
  • 4-away/5-away checker play
    Martin -- Sunday, 25 April 2010, at 8:43 a.m.
    • 4-away/5-away checker play
      Leonardo Jerkovic -- Sunday, 25 April 2010, at 2:07 p.m.
  • 4-away/5-away checker play
    Casper van der Tak -- Sunday, 25 April 2010, at 2:19 p.m.
    • 4-away/5-away checker play
      Daniel Murphy -- Sunday, 25 April 2010, at 8:43 p.m.
      • Money with or without Jacoby?
        Casper van der Tak -- Sunday, 25 April 2010, at 9:06 p.m.
        • Money with or without Jacoby?
          Timothy Chow -- Monday, 26 April 2010, at 3:33 p.m.
  • 4-away/5-away checker play
    Timothy Chow -- Sunday, 25 April 2010, at 5:29 p.m.
  • Rollouts: This seems to be a very subtle position!
    Timothy Chow -- Sunday, 25 April 2010, at 11:53 p.m.
    • Rollouts: This seems to be a very subtle position!
      Martin -- Monday, 26 April 2010, at 5:37 a.m.
      • Rollouts: This seems to be a very subtle position!
        Timothy Chow -- Wednesday, 28 April 2010, at 3:31 a.m.