You’re smarter than most if the first thing you see is the hidden letter Y in this optical illusion in under 5 seconds

VIEWERS can say they’re smarter than most if they can spot the letter Y in this challenging puzzle.

Players face a race against time as they’ve been tasked to spot the rogue letter in this V brainteaser within five seconds.

The puzzle from consists of more than a dozen rows and columns showing the letter V.

But, somewhere in the puzzle is a different letter.

Your eyes will dart across the puzzle as you try and complete it in time.

But if you're struggling, try the top right corner.

If this mind-boggling puzzle sent your head into a spin, see if you can find the UFO in this space-themed picture. 

But, readers have been warned that the puzzle is astronomically tricky to complete.

Viewers might be able to say that they have 20/20 vision if they can spot the number 17 in under 15 seconds.

Players have also been tasked to find the adorable dog in this fall scene that consists of bundles of leaves.

Another mind-bending brain teaser asks if you can spot the deflated tire in under 45 seconds.

Viewers might be able to say they have the eyes of a top marksman if they can spot the sniper hiding in the field in less than 10 seconds.