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 cast puzzles are some of the world's finest brain teasers. These high-quality, cast metal puzzles come in six challenging, Mensa-rated levels of difficulty. Hanayama puzzles are recommended for ages 12 and up.