This beautifully shaped puzzle is smoothly locked together, and there seems to be no way to break inside! The Double Lock Mechanical Puzzle is bound to make your head spin. The first objective is to unlock the puzzle into four separate pieces. You will have to find the right sequence of moves to release the first piece, and the remaining pieces will follow suit. After the puzzle has come apart, the next challenge is to assemble the pieces back together into the same shape. If all moves are performed in the right way, the pieces will move easily and smoothly and you will have mastered the Double Lock Puzzle in both ways. The vintage, elegant design and high quality, handcrafted wood make this an excellent decoration to keep on your desk or coffee table. Why not try challenging your colleagues and friends?!