You have to understand, that this software is functionnal for your scenari AND that we will regularly propose  new materials to work at.

After selecting one just follow the arrows!

OR

Begin with the full board or the empty one! 

Select the case of your choice by clicking on it of the BOARD OF THE LEFT. Two choices; move to another case the piece on it OR modify the content of that case.

So you can see the scenario back and forth, by the arrows.