Kupi Hanayama Rattle Puzzle 5137

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 seperate the four pieces and put them back together again? Four pieces of the same shape are loosely interlocked together to make up this puzzle.|All of the pieces fit loosely and it seems as though they would be easy to take apart. However, one is soon at a loss, as the puzzle gives no hint about how it is solved!