"Impossible" Puzzle Solved After 243 Years Using Quantum Entanglement
Over 240 age ago , renowned mathematician Leonhard Euler came up with a doubtfulness : if six US Army regiment each have six policeman of six different rank , can they be arranged in a hearty formation such that no run-in or column repeats either a rank or regiment ? After search in vain for a root , Euler declared the problem unacceptable – and over a century later on , the French mathematician Gaston Tarry demonstrate him right ....