Install SWI Prolog

The trainer needs a SWI Prolog installation to run properly. SWi Prolog is a high efficient programming language, which i used to implement the trainer. SWI Prolog is a free software maintained by the University of Amsterdam/Netherlands.
It can be downloaded from Prolog download

Installation prerequisites

If you have windows you need at least Windows 7
If you have Mac OS you need at least Mac OSX 10.12. (Sierra)

Choosing the right download

If your system is Windows 64 bit chose the download for 64 bit Windows *)
If your system is Windows 16 bit choose the download for 16 bit Windows
If your System is Mac OSX choose the Mac download

Installation under Windows (64 bit)

Start Installation with a double click at swipl-8.2.1-1.x64.exe  

Click "Weiter"

*) You can determine which Windows type you are using py pressing the Windows Key combined with Pause key.