Japanese Construction Lock Puzzle - Puzzle For Adult

Challenge your mind with one of our most intriguing interlocking puzzles! This exquisitely crafted puzzle is made of 18 identical, interlocking wooden sticks that form a giant 3-D square. Releasing the "lock" is not so hard, there is a key piece that helps collapse the structure once the key is removed. Then, the real challenge begins! Putting the 18 pieces back together is truly a task fit for engineers, but it’s entirely possible and very satisfying once you’ve solved the mystery.