Going to a new level

You may be tempted to stop there but I'm planning to turn our program into a game.

Many years ago it was in fact the first game that I created for the One Laptop Per Child project.

The left canvas shows a spirolateral which the player has to reproduce on the right canvas by choosing the right numbers.

As I recall, the hardest part was coming up with a set of usable spirolaterals!

You'll be pleased to know that you can use my list.

One of the challenges of this work was not to use any text at all.