Escher's "Lizards" Tessellation

V Trstu sem si ogledala zelo lepo razstavo Escherjevih del. Tlakovanje, simetrije, neskončnosti in nemogoči, tudi absurdni prostorski odnosi.... sama geometrija...Uau!!!

M.C. Escher was the master of transforming polygonal tessellations into non-polygonal works of art. Before moving any of the sliders, examine Escher’s "Lizards" tessellation below. How can one lizard be moved to the position of a neighbour. What shape is the tile formed from? This probably works best if you only click one box at a time.
Modified from original by Duke which can be found here More examples can be found here