Hello!!
I don't have much to say that is not already in the forum...
It wasn't easy but it was fun so don't worry and just try to be in shape...
The test of the cubes need a lot of reflexion but not more than the other tests so it's perfectly feasable!!
Instructions are really well explained and you always have some training before the real test to really understand what you'll have to do...
Good luck!
Pauline