What is considered to be the oldest mechanical puzzle in the world?

• The Chinese jigsaw puzzle
  Made from a 14-piece dissection of a square, the Loculus of Archimedes required solvers to arrange the pieces in specific shapes, like elephants and ducks. A 2003 computer simulation found 536 distinct solutions to the ancient puzzle.
• The Loculus of Archimedes
  Made from a 14-piece dissection of a square, the Loculus of Archimedes required solvers to arrange the pieces in specific shapes, like elephants and ducks. A 2003 computer simulation found 536 distinct solutions to the ancient puzzle.
• The Interlocking Rings of Babylon
  Made from a 14-piece dissection of a square, the Loculus of Archimedes required solvers to arrange the pieces in specific shapes, like elephants and ducks. A 2003 computer simulation found 536 distinct solutions to the ancient puzzle.