The Cast Box puzzle was designed by Akira Yuta from Japan and released by Hanayama in 2012. The puzzle features a ring entangled in a cubic structure, with the challenge to free the ring by navigating it through notches and ribs inside the box. The puzzle's theme revolves around a "box," symbolizing entrapment and release. Known for its sleek, matte brass finish, the Cast Box is a level 2 puzzle out of 6 stars, considered suitable for beginners but still captivating for experienced puzzlers due to its clever design. Among the Huzzle puzzles, it ranks on the easier side compared to others that can be more complex.