Have you ever heard of “Mobius”? It’s not a movie character and it’s not a brand about to revolutionise the car industry.
It’s a band with principles of its own, and more recently, it’s one of Hanayama’s most challenging puzzles!
The principle is the same for both objects: there is a surface where the front and back are identical, you could say there is only one side.
In the case of the jigsaw, on this twisted surface there are obstacles, blocking you as you move forward and notice that the front becomes the back.
You might think your eyes are playing tricks on you, but with a little patience you’ll realise that everything has a solution!