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GNU 2/2 ply vs. 3/2 ply

Posted By: Matt Cohn-Geier
Date: Monday, 6 October 2008, at 5:39 a.m.

3/2 ply wins here by 2.3 JSDs.

So far we have:

0/2 ply vs. 0/3 ply, 0/2 ply wins
2/2 ply vs. 3/3 ply, 3/3 ply wins
2/2 ply vs. 3/2 ply, 3/2 ply wins

So it would seem that 3/2 ply is the best of all. But 3/3 ply may be better. Daniel raised the question as to whether 3 ply plays the opening one or two rolls better than 2 ply, and it might, but I've been using 3/2 ply to analyze some of my games for awhile and IMO it doesn't seem to play them any better than 2 ply did. That is something to consider, though.

Move number 3: 3-2ply to play 21

3-2ply	170
2-2ply	167
Position ID: 4HPwATDgM/IBMA Match ID: MAEFAAAAAAAA

• 3-2ply moves 11/8

#		Ply	Move	Equity
•	1	R	11/8	-0.0574
			0.4876 0.1327 0.0056 - 0.5124 0.1458 0.0067 -0.0390 -0.0574 0.0004 0.0005 0.0001 - 0.0004 0.0005 0.0001 0.0011 0.0028
			Full cubeful rollout with var.redn.
			15423 games, rollout as initial position, Mersenne Twister dice generator with seed 835067560
			Player 0:
			Play: grandmaster 3-ply cubeful prune [grandmaster]
			keep the first 0 0-ply moves and up to 8 more moves within equity 0.16
			Skip pruning for 1-ply moves.
			keep the first 0 2-ply moves and up to 2 more moves within equity 0.04
			Cube: 2-ply cubeful prune [world class]
			Player 1:
			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]

Move number 5: 2-2ply to play 21

3-2ply	167
2-2ply	170
Position ID: 4HPwATDgM/IBMA Match ID: cAkFAAAAAAAA

• 2-2ply moves 11/8

#		Ply	Move	Equity
•	1	R	11/8	-0.0677
			0.4855 0.1329 0.0056 - 0.5145 0.1463 0.0075 -0.0444 -0.0677 0.0005 0.0005 0.0001 - 0.0005 0.0006 0.0003 0.0014 0.0034
			Full cubeful rollout with var.redn.
			14674 games, rollout as initial position, Mersenne Twister dice generator with seed 835198424
			Player 0:
			Play: grandmaster 3-ply cubeful prune [grandmaster]
			keep the first 0 0-ply moves and up to 8 more moves within equity 0.16
			Skip pruning for 1-ply moves.
			keep the first 0 2-ply moves and up to 2 more moves within equity 0.04
			Cube: 2-ply cubeful prune [world class]
			Player 1:
			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]

Messages In This Thread

• GNU 2/2 ply vs. 3/2 ply
  Matt Cohn-Geier -- Monday, 6 October 2008, at 5:39 a.m.
  • GNU 2/2 ply vs. 3/2 ply
    Stick -- Monday, 6 October 2008, at 5:51 a.m.
    • GNU 2/2 ply vs. 3/2 ply
      Matt Cohn-Geier -- Monday, 6 October 2008, at 6:12 a.m.
      • GNU 2/2 ply vs. 3/2 ply
        Mislav Radica -- Monday, 6 October 2008, at 8:19 a.m.