[Bug-gnubg] huge diff. between rollout and eval.

[W.Stroop]

Hi there,

Operating system WIN 98 second edition.
Snapshot 021227 (GTK).

In the attached position i discovered a huge difference in cubefull
evalution
and rollout. I there something wrong with the evalution in this kind of
positions ?

Cube analysis
2-ply cubeless equity  +0,388 (Money:  +0,373)
   67,4%   5,5%   0,1% -  32,6%   3,2%   0,0%
1. No double            +0,676
2. Double, pass         +1,000  ( +0,324)
3. Double, take         +0,669  ( -0,007)
Proper cube action: No double, take (2,1%)

BTW why does the hint dialog read cubeless ? In the eval dialog i selected
cubefull( worldclass)

Cube analysis
Rollout cubeless equity  +0,404 (Money:  +0,388)

1. Double, take         +0,896
2. Double, pass         +1,000  ( +0,104)
3. No double            +0,719  ( -0,177)
Proper cube action: Double, take
Rollout details:
Centered 1-cube:
   68,0%   5,7%   0,1% -  32,0%   3,0%   0,0% CL  +0,404 CF  +0,719
 [  0,1%   0,1%   0,0% -   0,1%   0,1%   0,0% CL   0,002 CF  +0,006]
Player gnubg owns 2-cube:
   70,2%   6,2%   0,1% -  29,8%   2,6%   0,0% CL  +1,145 CF  +0,896
 [  0,1%   0,1%   0,0% -   0,1%   0,1%   0,0% CL   0,007 CF  +0,009]
Truncated cubeful rollout (depth 11) with var.redn.
1296 games, seed 1193794432 using quasi-random dice and Mersenne Twister
Play and cube: 0-ply cubeful [expert]

Greetings Rob

double.sgf
Description: Binary data