This mystical moving optical illusion was created by artist Akiyoshi ... change colour as it moves from left to right on a gradient background. But it doesn’t. The circle actually stays the ...

Just one per cent of people are said to be able to see the world-famous celebrity icon in this tricky optical illusion that ...

At first glance the picture puzzle appears to be a penguin stood up facing left against a blue background ... has been called the "trickiest" optical illusion puzzle on the internet.