A random tiling of a square domain using dominoes (1x2 rectangles) -following a 'square' spiral- [Un pavage aléatoire d'un domaine carré utilisant des dominos (rectangles 1x2) -suivant une spirale 'carrée'-].
This tiling is made respectively of 4069 (50.07%) horizontal and 4058 (49.93%) vertical rectangles,
the choice between horizontal and vertical being made at random when possible.
The 130 black 1x1 squares display unreachable sites.