RE: [Bug-gnubg] Evaluation inconsistency

[Albert Silver]

> It would be great if you posted the position - even if you don't think
> it is relevant to the problem you are facing.

Naturally it is no problem to show the position, but as I said, it is
completely unimportant whether my decision was wrong or right.

GNU Backgammon  Position ID: 7gCAIOY2JgFCAA
                 Match ID   : UQmgAkAAEAAA
 +13-14-15-16-17-18------19-20-21-22-23-24-+     O: MartinKrainer
 |                  |   |    X     O  O  X | OO  4 points
 |                  |   |          O  O    | OO  
 |                  |   |          O  O    | O   
 |                  |   |                  | O   
 |                  |   |                  | O  
v|                  |BAR|                  |     21 point match
 |                  |   |                  |    
 |                  |   |                  |     
 |                  |   |          X       |     
 |             X    |   |    X  X  X     X |     On roll
 | X     X     X  O |   |    X  X  X  O  X |     2 points
 +12-11-10--9--8--7-------6--5--4--3--2--1-+     X: SubtleOne (Cube: 2)

What is important is the difference in the size of errors from (-0.007)
to (-0.115) when *everything* in the percentages is improved:

 
Cube analysis
3-ply cubeless equity  +0.345 (Money:  +0.343)
   72.5%   0.0%   0.0% -  27.5%   9.7%   0.9%
   ^^^^^                          ^^^^ 
3. Double, take         +0.671  ( -0.007)
                                ^^^^^^^^^


Rollout cubeless equity  +0.369 (Money:  +0.362)
3. Double, take         +0.747  ( -0.115)
                                ^^^^^^^^^
Player SubtleOne owns 2-cube:
   73.0%   0.0%   0.0% -  27.0%   8.9%   0.9% CL  +0.369 CF  +0.862
   ^^^^^                          ^^^^ 
Player MartinKrainer owns 4-cube:
   74.0%   0.0%   0.0% -  26.0%   8.8%   0.9% CL  +0.847 CF  +0.747
   ^^^^^                          ^^^^

If my winning percentages according to the rollout *improved* from 72.5%
to 73% or 74% then why did the size of the error *worsen* from -0.007 to
-0.115 ?? That is what I want to understand. Mind you I also get
gammoned less in the rollouts.

                                                Albert