A professional Magic Square routine from the repertoire of Luis de Matos. Members of the audience call out numbers at random.
Unbelievably, from these the performer is able to construct a perfect magic square. All the columns, rows, diagonals and corners add up to the same number. Not only that but this number was chosen by a spectator just a few moments earlier. No formulas. No memory work. An incredible mind boggling routine for the professional worker.