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Rollout: Hit or make a point?

Posted By: Timothy Chow
Date: Monday, 17 May 2010, at 2:22 a.m.

In Response To: Hit or make a point? (Timothy Chow)

I was hoping to get more feedback for this position because I don't understand it. Maybe if I had put the word "Real" in the subject more people would have clicked on it?

Anyway, the rollout pretty clearly says to make a point with 4-3 but to hit with 5-4. My best guess as to the difference is that even though White has the same number of return shots in either case, they are of inferior quality in the case of 5-4 because some of the hits are in White's own home board. I don't feel that I really understand what's going on here though.

---

gnubg	141
tchow	125
Position ID: 2D2kARjYXRcADA Match ID: cAkOACAAIAAA

#		Ply	Move	Equity
•	1	R	7/3 6/3	+0.397
			0.608 0.165 0.009 - 0.392 0.095 0.003 +0.291 +0.397 0.001 0.001 0.000 - 0.001 0.001 0.000 0.003 0.010
			Full cubeful rollout with var.redn.
			1296 games, Mersenne Twister dice gen. with seed 851608430 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	22/15*	+0.360 ( -0.037)
			0.598 0.241 0.017 - 0.402 0.152 0.014 +0.287 +0.360 0.001 0.001 0.000 - 0.001 0.001 0.001 0.003 0.008
			Full cubeful rollout with var.redn.
			1296 games, Mersenne Twister dice gen. with seed 851608430 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]

---

gnubg	141
tchow	125
Position ID: 2D2kARjYXRcADA Match ID: cAkWACAAEAAA

#		Ply	Move	Equity
•	1	R	22/13*	+0.419
			0.619 0.228 0.015 - 0.381 0.145 0.013 +0.322 +0.419 0.001 0.001 0.000 - 0.001 0.001 0.001 0.003 0.007
			Full cubeful rollout with var.redn.
			1296 games, Mersenne Twister dice gen. with seed 852441872 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	8/3 7/3	+0.342 ( -0.077)
			0.596 0.169 0.009 - 0.404 0.099 0.004 +0.268 +0.342 0.001 0.002 0.000 - 0.001 0.001 0.000 0.004 0.010
			Full cubeful rollout with var.redn.
			1296 games, Mersenne Twister dice gen. with seed 852441872 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

• Hit or make a point?
  Timothy Chow -- Sunday, 16 May 2010, at 12:18 a.m.
  • Hit or make a point?
    garyo -- Sunday, 16 May 2010, at 7:29 a.m.
  • Rollout: Hit or make a point?
    Timothy Chow -- Monday, 17 May 2010, at 2:22 a.m.
    • Rollout: Hit or make a point?
      Neil Robins -- Monday, 17 May 2010, at 6:27 a.m.
    • Rollout: Hit or make a point?
      Max Urban -- Monday, 17 May 2010, at 9:19 a.m.