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Only two legal plays

Posted By: Timothy Chow
Date: Thursday, 19 November 2009, at 4:30 a.m.

I apologize to those of you who prefer not to be shown a rollout up front, but in the (money-game) position below there are only two legal plays, so with QF you would immediately know what the rollout result was anyway.

Anyway, my question is, is hitting really that bad here? I don't understand why. It leaves the same number of return shots as not hitting, and gains a tempo. What am I missing? Or is GNU not playing the position properly?

gnubg	96
tchow	248
Position ID: szlbgACwAQOOTw Match ID: UYkaAEAAAAAA

#		Ply	Move	Equity
•	1	R	bar/14	-0.429
			0.402 0.053 0.001 - 0.598 0.476 0.026 -0.644 -0.429 0.003 0.002 0.000 - 0.003 0.003 0.003 0.011 0.014
			Full cubeful rollout with var.redn.
			1296 games, Mersenne Twister dice gen. with seed 869295138 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	bar/20 13/7*	-0.507 ( -0.078)
			0.381 0.054 0.001 - 0.619 0.497 0.040 -0.718 -0.507 0.004 0.002 0.001 - 0.004 0.004 0.003 0.014 0.017
			Full cubeful rollout with var.redn.
			1296 games, Mersenne Twister dice gen. with seed 869295138 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

• Only two legal plays
  Timothy Chow -- Thursday, 19 November 2009, at 4:30 a.m.
  • Only two legal plays
    Jason Lee -- Thursday, 19 November 2009, at 4:43 a.m.
    • Only two legal plays
      Timothy Chow -- Thursday, 19 November 2009, at 3:25 p.m.
  • Only two legal plays
    Stick -- Thursday, 19 November 2009, at 4:46 a.m.
    • Only two legal plays
      Max Urban -- Thursday, 19 November 2009, at 7:01 a.m.
      • Only two legal plays
        MaX -- Thursday, 19 November 2009, at 8:19 a.m.
      • Only two legal plays
        Stick -- Friday, 20 November 2009, at 9:39 a.m.
  • Only two legal plays
    garyo -- Thursday, 19 November 2009, at 6:54 a.m.
  • Only two legal plays
    Peter G. -- Thursday, 19 November 2009, at 12:38 p.m.
  • Only two legal plays
    Christian Munk-Christensen -- Thursday, 19 November 2009, at 2:55 p.m.
    • Only two legal plays
      Timothy Chow -- Thursday, 19 November 2009, at 3:29 p.m.
  • Only two legal plays
    neilkaz -- Thursday, 19 November 2009, at 11:36 p.m.
    • Only two legal plays
      Timothy Chow -- Friday, 20 November 2009, at 2:54 p.m.
  • Only two legal plays
    Sam Pottle -- Friday, 20 November 2009, at 12:10 a.m.
  • Thanks for the feedback
    Timothy Chow -- Friday, 20 November 2009, at 3:16 p.m.