Comment on A puzzle that tiles infinitely across both sides, based on the Klein BottleparentComments−rcthompson8yNot by itself. It could also imply a torus, depending on how the pieces must be oriented in order to fit each other. There may also be other possibilities.
Comments
Not by itself. It could also imply a torus, depending on how the pieces must be oriented in order to fit each other. There may also be other possibilities.