Created by Kyoo, with Hanayama Cast U & U puzzle you'll spend hours trying to solve the intense challenging puzzle. Can you take it apart? Now try and put it back together! Hanayama cast puzzles are the world's finest brain teasers.Two U-shaped bolts and four nuts - this looks like a combination of spare parts but looks are deceiving. Hanayama Cast U & U comes with a deviously hidden trick. The key to unlocking these parts is to look carefully at each part first. The theme is complexity.Ranked at a 4 out of 6 level of difficulty, solving Hanayama Cast U & U is not going to be easy! Can you take it apart? Can you assemble it again? No solution included!