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

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