I looked at a 'Magic Eye' website & only got the first one to work. After that, I couldn't see any of them. I did about 10 so I figured my odds were 1:10 & just answered the poll anyway... However, on the 'hollow mask' illusion? I kept getting really confused because as I watched it more, I thought the hollow side was supposed to stick out & thought the painted side was actually sucked in? Lol. I need to avoid optical illusions. XD