This optical ... illusion with few odd letters set here and there, is actually one of the toughest ones netizens have said. So, what's the challenge? The task is to find the right spelling of ...

In this fascinating optical illusion, a group of zebras surrounds a watering hole — but two well-camouflaged predators are ...

(Also read: Optical illusion: If you spot hidden cat in this image, you'll be declared as true puzzle master) As the popularity of brain teasers and optical illusions continues to rise, it’s ...