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GNU 2/2 ply vs. 3/3 ply

Posted By: Matt Cohn-Geier
Date: Tuesday, 9 September 2008, at 3:21 p.m.

This one I will extend a bit, but there's some 2.8 JSDs of significance, so I don't expect anything to change. 3/3ply won 0.01431 ppg, or 1.431 points per 100 over 2/2ply.

I think it's safe to draw a few conclusions at this point, Daniel's comment on the opening rolls notwithstanding:

1) 3-ply checker play is, in general, a little better than 2-ply checker play.
2) 2-ply cube is, in general, a little better than 3-ply cube.
3) 3/3 ply is, in general, a little better than 2/2 ply.

The score (after 0 games) is: 2ply 0, 3ply 0

Move number 5: 2ply to play 21

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

• 2ply moves 11/8

#		Ply	Move	Equity
•	1	R	11/8	-0.06739
			0.48138 0.13184 0.00565 - 0.51862 0.14890 0.00682 -0.05546 -0.06739 0.00058 0.00062 0.00018 - 0.00058 0.00067 0.00018 0.00144 0.00391
			Full cubeful rollout with var.redn.
			8687 games, rollout as initial position, Mersenne Twister dice generator with seed 837317894
			Player 0:
			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]
			Player 1:
			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: 3-ply cubeful prune [grandmaster]

The score (after 0 games) is: 2ply 0, 3ply 0

Move number 4: 3ply to play 43

2ply	167
3ply	174
Position ID: 4HPwATDgOfgBMA Match ID: cAkOAAAAAAAA

• 3ply moves 13/6

#		Ply	Move	Equity
•	1	R	13/6	-0.05308
			0.49200 0.13523 0.00585 - 0.50800 0.14471 0.00663 -0.02627 -0.05308 0.00046 0.00049 0.00014 - 0.00046 0.00050 0.00016 0.00114 0.00325
			Full cubeful rollout with var.redn.
			14479 games, rollout as initial position, Mersenne Twister dice generator with seed 830759193
			Player 0:
			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]
			Player 1:
			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: 3-ply cubeful prune [grandmaster]

Messages In This Thread

• GNU 2/2 ply vs. 3/3 ply
  Matt Cohn-Geier -- Tuesday, 9 September 2008, at 3:21 p.m.
  • GNU 2/2 ply vs. 3/3 ply
    Keene -- Tuesday, 9 September 2008, at 6:59 p.m.