Details: Joseph B has shown this effect to many magicians but no one has come up with a solution.
This is a powerful effect with a double ending. The magician is able to reveal the spectator's card and also the total of two dice hidden under a cup. Surprising, with a really subtle method. Joseph B in the course of the routine slowly eliminates from the mind of the spectator every possible solution leaving him speechless.

Remember: the spectator always keeps the cards face down!

A Normal Deck of Cards
Two Normal Dice
A Normal cup
NO Peek
NO rough and smooth
NO sticky stuff