Have you ever played this game?
With a single knight, visit every square on the chess-board only once, bonus point if you get back where you started: it's call a "closed tour of the knight".

This program is good at it. On any sized board. And the knight's tail is dripped in paint.

Press 'S' on your keyboard in live mode to generate a 3600x3600 high-resolution image (it takes a few seconds).