You could have the ultimate 20/20 vision if you can spot all six faces in the mind-bending optical illusion in 10 secs

THINK you have an eye for detail? This mind boggling optical illusion will reveal if your eyes are up to scratch.

The timer starts now, if you spot the six faces hidden within the image in just 10 seconds then you have the eyes of a hawk.

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The picture shows a stormy sky with a bleak looking forest in the back drop.

The illusion is made especially difficult as it is colourless and the artist only uses different shades of grey, this means it deceives the eyes.

Most people can spot at least three faces, but to spot the full six in such a short time period is no easy feat!

Any luck yet? Here's a clue, study each section of the image piece by piece and scan for anything face-like, once you find the biggest face the answers should be easier.

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Don't worry if you're struggling, this is one of our most tricky teasers so far, and we have included the solution at the bottom of the page.

Meanwhile, why not try some other optical illusions while you scroll?

Test your brain power and solve the questions in this test to reveal if you have a high IQ.

Or, see if you have the eyes of a predator and spot the bird hidden among the branches.

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The answers to this brain teaser can be found in the centre of the picture, with two of the smaller faces making up the eyes for a bigger face.

Once you notice the larger face, another figure can be seen camouflaged into the moustache of this face.

And then a fourth figure makes up the nose, and the final figure - which is the hardest to spot- is a man with a hat on who is within the left eye of the large face.

Human curiosity means solving these perplexing puzzles can bring a great sense of satisfaction to us, and not only this but they are good for our brains too.

Psychologists at The University of Glasgow found that staring at an optical illusion can improve eye sight by allowing you to see small print.

And according to  "These visual puzzles can give you a good mental workout that can, in turn, help you think more efficiently and solve problems more easily."

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