Quartet Hanayama cast metal puzzle

Description

Difficulty Level 6 – The hardest Hanayama level

Separate the 4 pieces of the puzzle.  True bonds has always been hard to form, but once formed such bonds are eternal and hard to break. The inventor Uyematsu says that his original version was created with this image in his mind, but the puzzle was completed into a cast puzzle with a bond that is truly difficult to unravel. How would you go about breaking and forming this bond? There are two approaches to this puzzle and we challenge you to both!

Puzzle theme: Bond.

Size: Presented in the new Black Huzzle box which is 75mm x 115mm x 45mm  Each piece is 32mm square.
Hanayama puzzles come packaged with a printed solution. This is the genuine solution supplied by Hanayama, not offered as standard by other sellers.