🧠 Unleash Your Inner Genius with Every Twist! Only the best can conquer this Level 6 challenge! Discover the art of puzzle-solving with 4 interlocking pieces. Challenge yourself with a Mensa-rated brainteaser. Perfect for ages 12 and up, making it a family favorite. Experience the quality of Hanayama's renowned manufacturing. Global Brand 4 Interlocking Pieces Level 6 Difficulty The BePuzzled Quartet Hanayama Metal Brainteaser Puzzle is a challenging Level 6 puzzle designed for ages 12 and up. Crafted by inventor Mine Uyematsu, this intricate brainteaser features 4 interlocking pieces that will test your problem-solving skills. Known for its quality and complexity, Hanayama puzzles are a staple for enthusiasts seeking a rewarding challenge.