[Bug-gnubg] Difference between play and analyse

[amarganth]

Hi there

I have a problem by playing against GnuBG and by analysing the match afterwards: After finish playing a match I usually analyse the match. GnuBG ends with (for instance) a GnuBG-Error-Rate of -3.0 / Snowie-Error Rate -1.4 / FIBS-Rating of 2012. Why doesn't GnuBG have a FIBS-Rating of (exactly) 2050?

My settings for Einstellungen > Analysen / Einstellungen > Beurteilungen are the same:
- world class
- noise 0.000
- move filter normal
- using neural net pruning

Another situation: GnuBG doubles during a game. I press the "hint" button. GnuBG tells me "No Double / Take".

Isn't it possible, to let GnuBG play the *best* move? Or: why aren't played moves and analysed moves different?

Thanks in advance

Rolf