In the pic below you can see two faces. A normal face on the right and a wicked one on the left. Now get up from your chair and walk some 8 steps back and see the magic. The two faces interchange their positions.

just roll your eyes on this one

note at black dots (if you can)


The picture above shows the winner, by Frederick Kingdom, Ali Yoonessi and Elena Gheorghiu, its incredibly simple, both pictures are identical (apart from a slight offset due to some dodgy photoshopping I guess) but due to to the way the brain interprets objects receding into the distance it creates the impression that the one on the right is at a greater angle than the one on the left.

At first glance, the silhouette is spinning clockwise. but according to the source website, and the small sample test group I showed it to; you can reverse the spinning.

Here are some hints from the test group.

* You have to look down at the shadow, keep your eyes there for some seconds and then slowly move your eyes upward.
Sometimes my brain even changes the direction when I look at different parts of the figure. Dont stare at her, keep your eyes moving up and down.
* when she turns clockwise she has the right foot up.. when counter-clockwise its the left foot.. just tell yourself which foot is up and she will turn in that direction..