The Cast Box from Hanayama Huzzle, a intricate 3D metal puzzle, will challenge your problem-solving skills. This beautifully crafted puzzle is made from cast metal and features a complex design that requires skill and patience to solve. With its unique design and challenging solution, the Cast Box is a must-have for any puzzle lover.

Designed by Japanese designer Akira Yuta, this puzzle's ring is tangled in a cubic frame. The ring moves freely within the cubic space and makes you feel that time is infinite.  The objective is to begin with the ring tangled around START and try to successfully remove the ring.

• Difficulty level: Tricky, 6/10
  
• Object: Remove the ring
  
• Dimensions: 1.4 in x 1.4 in x 2 in