1. I L L U S I O N

2. The PenroseTriangle

10. Here, movesnothing!!!!!

12. On black

13. On white

20. A variant of the Penrose Illusion but becarefulnow … andnowalso!! until here everything is clear, right?

23. The Magic Ring

24. The Magic Ring

26. Here, movesnothing!!!!!

27. A picture of, Maurits C. Escher, painter (1898 - 1972)

28. U N T O P A B L E E. S. P O S T H U M U S