All 601 ways to tie a shoelace with four pairs of eyelets. Restrictions: The lace must pass through each eyelet exactly once, must begin and end at the extreme pair of eyelets and cannot pass in order though three adjacent eyelets that are in a line. See: OEIS A078602. Inspired by @ionicasmeets ‘ column in today’s Volkskrant.

Shoelaces, white and black on grey, A3

• 29×21 grid, dus 609 places for 601 configurations
• 40 x 27 cm