Kupi Hanayama Coil Puzzle

The Hanayama range has been painstakingly designed and developed over more than a quater of a century and is quite simply the most inspiring collection of puzzles ever created! Puzzle Mission Can you untangle the two coils and put them back together again? It appears like a box-like lump with a hole in it, but is actually comprised of 2 coiled up virtually identical pieces. You must try to take it apart by sliding and rotating the pieces. Although the pieces are angular in shape, they can be rotated in unexpected ways!