It seems impossible to remove the ring from this cube at first glance. Imagine the satisfaction when you actually do the impossible! Try Hanayama Cast Box Puzzle!
We are the kind of people who, when solving a math problem three times, get different answers each time. Nevertheless, we undoubtedly love the puzzles inspired by math!
What could be more romantic than giving your heart? Of course only of the heart is a Hanayama Cast Love Puzzle that the person needs to solve in order to assemble it.