Separate the 4 parts and put back together! All of the pieces fit loosely and it seems as though they would be easy to take apart. However, one is soon at a loss, as the puzzle gives no hint about how it is solved.
Eureka Huzzle Cast Cake Puzzle
Eureka 515114" Huzzle Cast Nutcase Puzzle
EUREKA 515095" Huzzle Cast Padlock Puzzle
Eureka 515088" Huzzle Cast Duet Puzzle
Eureka 515051 "Huzzle Cast Ring****" Puzzle
Eureka 515111" Huzzle Cast Chain Puzzle