This optical illusion has the internet completely stumped

Publish Date
Friday, 10 November 2017, 12:30PM
Photo / Getty

Photo / Getty

There are several optical illusions floating around the web, but this one has people completely stumped!

At a glance, the image below shows a pattern of black, white and grey lined squares - but it has something extra hiding inside.

Can you see what it is?

There are actually 16 circles inside the picture!

Still can't see them?

Here they are!:

Mind blown!