Do you like a puzzle that floats like a butterfly and stings like a bee? Well this Muhammad Ali puzzle is the undisputed champion of the world! It's got 1000 pieces and is 20" x 27" when complete. When he fought Sonny Liston in 1964, Ali was still known by his birth name, Cassius Clay. Be warned, if you don't complete this puzzle, it's likely to mock you mercilessly and then get inside your head. If it feels too easy, watch out for the rope-a-dope.