Problema - With Leather Dice Cup

The magician shows an elegant wooden box containing six black dice arranged in order from 1 to 6 and he closes it with a lid. He then hands over to a spectator a dice cup with a die inside, inviting him to shake it and turn it upside down over the box, so that a casual number is selected from the die. Unbelievably , when the magician removes the lid, all the dice will now show the exact same number previously selected.
 
With “Problem” the trick can even be repeated with a different outcome.

• With just a little practice you will be able to hand everything out for examination.
• The wooden box measures cm 8 (s) x 3 (h) x 6 (d) while the dice measure cm 3 on the side.