https://www.youtube.com/watch?v=fYKFAFn9t_Q

MagoMigue’s rendition of the Paul Curry classic takes it into new territory. Four spectators shuffle a deck of cards and without looking at the faces try to guess which are the black cards and which are the red. It sounds impossible but when the packets of cards are turned over the incredible has happened. The spectators have separated all the red cards from all the black cards. This is a brand new approach to a sensational effect. The deck is genuinely shuffled by the spectators. No sleight of hand. None of the usual switching of packets or marker cards. The handling is super clean and the routine plays big. Use it in close up or for a larger audience. Comes complete with a special deck of cards that the audience can freely handle and yet makes the trick possible. You can even use it for other card tricks.