This is the larger  and more difficult  version of our Snake Cube! You don't have to be a rocket scientist to unravel this cube into a snake (just twist and swivel the 64 wooden cubes to uncoil the serpent) but it certainly helps to be a genius to put it back together. This legendarily difficult brain-teasing puzzle will have you undulating in no time. If the snake starts to constrict you, just remember: The string of cubes form a Hamiltonian path through a 4×4×4 grid graph, duh! Skill and patience will be tried when turning the snake back into the original cube.