Enigma Puzzle - Very Difficult Metal Puzzle
This super hard puzzle was considered for many years impossible to solve. The Enigma metal puzzle was originally designed in 1975 in the USA. Recently Hanayama made a new version maintaining the difficulty of the original puzzle and licensed it for the Cast Puzzle series. The goal is to take the pieces apart, then put them back together again. This is without a doubt among the most difficult of all puzzles.