A ring is tangled on a cubic frame. The ring moves freely within the cubic space and makes you feel that time is infinite. Begin with the ring tangled around START and try to successfully remove the ring. Designed by Akira Yuta from Japan.
Hanayama is known worldwide for challenging puzzles and quality manufacturing. Can you take the pieces apart, then put them back together again? Hanayama cast metal brain teasers have 6 levels of difficulty, and each puzzle is Mensa-rated. Level 4 puzzles are considered challenging by most puzzlers.