A Rubik's Cube with a map printed on it. Compared to the 3x3 version, this is a much more difficult puzzle. You need to remember the completed state well.
The problem is the quality of the puzzle. It's a bit tight at first, and if you're not careful when turning it, it will pop out easily. It also has a strong sense of sticking, so turning it normally can be stressful. For people with a lot of patience.
