Considered one of the hardest puzzles by Hanayama, the Cast Hourglass is the perfect gift for the accomplished puzzler! It offers a thrilling challenge at the most difficult level. It is made up of two pairs of identical hourglass shaped pieces with a meticulously calculated design. Inspiration, intuition, precision and logic will be all necessary to work out just how to solve this puzzle. Bonne chance! Difficulty Level 6 (Grand Master).
Box Size : 11cm x 7cm x 4cm
Age : 8 to 99 years