Rated as a LEVEL 6 difficulty by the manufacturer (Hanayama Puzzles of Japan) on a scale of 1 to 6 where 1 is easiest and 6 most challenging. Your experience could differ.
Thought by many to be one of the most difficult in this series of over 40 different brain teasers. The interlock is an amazing creation.
Solved with clever movements. NO FORCE ever needed. Patience and planning are the key to success.
Small, compact, pocket-size cast metal brain teaser measures approximately 4.5 inches stretched out and .25 inches thick. Recommended for ages to 12 through 105 years. A few bright 8 to 11 year olds may also enjoy this puzzle.