How many circles can you see in 10 seconds in this mind-boggling optical illusion?

TEST your IQ by finding as many circles as possible in ten seconds in the optical illusion below.

Take a look at the image to put your observational skills to the test.

SafaltaTest your observational skills by counting the circles in this optical illusion[/caption]

It shows black and white squares atop a grey background.

But when you start to look at the picture, the squares start to shift into a not-so-circular pattern.

Set yourself a ten second timer...