Can you take it apart? Can you assemble it again? CAGE Metal Brain teaser puzzle consist of a metal cylindrical cage and a colored solid star inside. Various shaped openings on all four sides of the cage.. Your objective is to remove the star from the cage. Small, compact, hand-size, tricky puzzle. NO FORCE ever needed. Clever puzzle, moderately challenging, always fun. Hanayama rates this as a level 3 on a scale of 1 to 6 (where 6 is those most difficult.) Your experience may differ substantially. Ratings are subjective. The dice face on the packaging indicates level of challenge in relation to the other puzzles in this series.