I did the last one instead of studying for a tomorrow final exam. It was easy, only time consuming. It took me almost 3 hours. Slowly but surely. I like these logical puzzles, I even made one myself and it was printed in a magazine. It is known here as "coded pictures". It also gets funnier, when you add colours and diagonal half-squares into it.
no subject
Thank you, now I go to the third one pic.