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Gnubg 'fesses up

Posted By: Daniel Murphy
Date: Friday, 29 June 2007, at 7:54 p.m.

In Response To: Summer Solstice position 2 Rollout- correct score, and a question. (DC-Ohio)

Why is the hit better at -3,-4 ...

Gnubg sez: It's not better. After opponent plays 8/5* 6/1, I should double, but in Darin's rollout I didn't. My bad:

The score (after 0 games) is: White 2, Blue 1 (match to 5 points)

Move number 4: White on roll, cube decision?

White139


 ' ' '3O2X4X2X2X2X ' ' '

2O2O2O '1O2O '1O2X '2O '

Blue122

Position ID: 2zQxAAewtw0YQA Match ID: MAGgACAACAAA

• White doubles

Cube decision
Rollout cubeless equity +0.5015(Money: +0.4835)
Cubeful equities:
1.Double, take +0.8907
2.Double, pass +1.0000 +0.1093
3.No double +0.7339 -0.1568
Proper cube action:Double, take
Rollout details
WinW gW bg LoseL gL bgCubelessCubeful
Centered 1-cube0.70570.15610.0070-0.29430.09040.0006 +0.5015 +0.7339
Standard error0.00310.00400.0020-0.00310.00410.0006 0.0106 0.0249
Player Blue owns 2-cube0.71790.15780.0135-0.28210.10110.0011 +1.4410 +0.8907
Standard error0.00350.00650.0030-0.00350.00720.0008 0.0377 0.0354
Full cubeful rollout with var.redn.
430 games, Mersenne Twister dice gen. with seed 1068440660 and quasi-random dice
Play: 2-ply cubeful prune [world class]
keep the first 0 0-ply moves and up to 8 more moves within equity 0.12
Skip pruning for 1-ply moves.
Cube: 2-ply cubeful prune [world class]


Annotation

Cube analysis
0-ply cubeless equity +0.5253 (Money: +0.4356)
0.6945 0.1479 0.0036 - 0.3055 0.1037 0.0012
Cubeful equities:
1. No double +0.6395
2. Double, pass +1.0000 ( +0.3605)
3. Double, take +0.6364 ( -0.0031)
Proper cube action: No double, take (0.9%)

Cube analysis
1-ply cubeless equity +0.5424 (Money: +0.4455)
0.6950 0.1596 0.0031 - 0.3050 0.1060 0.0013
Cubeful equities:
1. Double, take +0.6612
2. Double, pass +1.0000 ( +0.3388)
3. No double +0.5846 ( -0.0766)
Proper cube action: Double, take

Cube analysis
2-ply cubeless equity +0.4845 (Money: +0.4038)
0.6867 0.1376 0.0027 - 0.3133 0.1088 0.0012
Cubeful equities:
1. No double +0.5620
2. Double, pass +1.0000 ( +0.4380)
3. Double, take +0.5607 ( -0.0013)
Proper cube action: No double, take (0.3%)

Cube analysis
3-ply cubeless equity +0.5569 (Money: +0.4600)
0.7000 0.1582 0.0031 - 0.3000 0.1000 0.0013
Cubeful equities:
1. Double, take +0.7059
2. Double, pass +1.0000 ( +0.2941)
3. No double +0.6139 ( -0.0920)
Proper cube action: Double, take

Cube analysis
4-ply cubeless equity +0.4819 (Money: +0.4019)
0.6860 0.1367 0.0024 - 0.3140 0.1081 0.0012
Cubeful equities:
1. Double, take +0.5561
2. Double, pass +1.0000 ( +0.4439)
3. No double +0.5510 ( -0.0051)
Proper cube action: Double, take

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