4Sets ADVANCED metal puzzles(instruction paper included)
Very nice for party games,office toys parent-child family games for relax and killing time
Good for creative thinking and improve your patience, intelligence, IQ
Metal brain teasers condenses with traditional Chinese culture and quite interesting
TIPS: If you want more fun & Challenge,please DO NOT refer to the solution "Challenge Guide" The really most interesting thing is exploring how to solve it,but not the result
