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BQ: What's the big deal? *** RO ***

Posted By: leobueno
Date: Tuesday, 27 November 2012, at 4:17 p.m.

In Response To: BQ: What's the big deal? (leobueno)

JSD > 4.

Why does such a seemingly inoccuous move make such a big equity difference?

The score (after 0 games) is: GNUbg 0, leobueno 0

Move number 3: leobueno to play 14

GNUbg107

2X3X2X ' '3X ' '1X ' '3O

 ' '2O2O2X2O3O2O ' ' '2X
leobueno127
Position ID: u3GEAQNsdoMDQA Match ID: cIkQAAAAAAAE

leobueno moves bar/21 7/6

Cube decision
4-ply cubeless equity -0.185
45.5 8.4 0.2 - 54.5 18.0 0.1
Cubeful equities:
4-ply cubeful prune [4ply]
1.No double -0.256
2.Double, pass +1.000 +1.256
3.Double, take -0.765 -0.509
Proper cube action:No double, beaver (28.8%)

# Ply Move Equity
1 R bar/21 7/6 -0.027
50.9 11.0 0.4- 49.1 13.6 0.1 -0.005 -0.027
0.2 0.2 0.0- 0.2 0.3 0.0 0.006 0.012
Full cubeful rollout with var.redn.
532 games, Mersenne Twister dice gen. with seed 698025998 and quasi-random dice
Stop when best play is enough JSDs ahead: limit 4 (min. 360 games)
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 -0.096 ( -0.069)
50.1 12.5 0.4- 49.9 17.3 0.1 -0.042 -0.096
0.2 0.3 0.0- 0.2 0.3 0.0 0.005 0.011
Full cubeful rollout with var.redn.
531 games, Mersenne Twister dice gen. with seed 698025998 and quasi-random dice
Stop when best play is enough JSDs ahead: limit 4 (min. 360 games)
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 2 bar/21 4/3 -0.337 ( -0.310)
44.1 8.9 0.2 - 55.9 21.8 0.2
2-ply cubeful prune [world class]
4 0 bar/21 3/2 -0.380 ( -0.353)
43.7 8.9 0.3 - 56.3 25.2 0.1
0-ply cubeful prune [expert]
5 0 bar/21 8/7 -0.473 ( -0.446)
41.6 9.1 0.1 - 58.4 27.7 0.3
0-ply cubeful prune [expert]

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