That makes me go crosseyed!!

I dont get it, I just see a soccer ball in front of a chessboard. Maybe im not trying hard enough, .. must try harder (mind explosion)

Reminds me of this holographic shirt pen my brother used to have..it's cool:)

DK, if you look besides the image, and only see it from the corners of your eyes, it will move. At least, it did when I looked.
At first I also wanted to say, not advanced. Until I noticed you used Lascaux, that to the best of my knowledge does not have a texture like the background. So at least you get a 'kudos' for that.

ouch...very interesting.

thanks all...bmw what makes a pen specifically a shirt pen? ;)

and enjoy, advanced was used for size...these types of illusions are hard to replicate effectively on a smaller scale. as per the textures, well, its not, its lines...lots of them, with just enough frequency to sequence evenly..there are some imperfections, and it does not have the effect i wanted, but im happy