Made from nickel plated wire, which leaves no metal smell in your hands like other metal puzzles do, the goal is to simply remove the ring from the cuffs and then return it to its original position. No bending or extra force needed. The Handcuffs is a classic example of a puzzle that looks impossible to solve at first glance, but has in fact a very simple solution method. The design is inspired by the Horseshoe Puzzle, one of the most recognizable metal puzzles of all time. Handcuffs is from our own brand, Puzzle Master, of wire puzzles and comes in a reusable clam shell packaging, ideal for storage.