Hanayama CHAIN puzzle is a 3 piece take-apart puzzle. The objective is to separate all three pieces; to rejoin all three; AND to know how you did it!!! This is a level 6 puzzle on a scale on 1 to 6 where 6 is the most difficult. Most will find the CHAIN Puzzle an excellent challenge. Requires much thinking, planning and many attempts. Take note of the dots (indentations) on each piece (1,2 or 3 dots) as this will assist distinguishing between the three almost identical pieces. Equally challenging is to put the puzzle back together. Occasionally someone will accidentally separate the pieces and think they are a genius !!!! NOT SO ! Mastering the puzzle means you can disassemble and assemble the three pieces easily. Meaning you know exactly which moves to execute to untangle the pieces and then to re-assemble. Simply a series of clever moves. Recommended for ages 13 to 105 years. NO FORCE is ever required to solve the puzzle. Forcing pieces may damage the puzzle !! Includes GREEN Velveteen / red satin lined drawstring storage pouch. Measures approximately 3.25 x 4 inches laying flat. Bundled Items. Official Hanayama (BePuzzled) Puzzles are packaged in the dark green box with see-through front.