India, Aug. 13 -- Optical Illusions are fun and a great way to give your brain a mental push-up, and if you think you can crack any challenge, here is something that might shake that up. This optical illusion is doing the rounds, and all you have to do is find one tiny "IiI" inside a big messy grid of "III." Sounds easy? Here is the main challenge.

When you first take a glance at it, every bit of the grid looks exactly the same. It is just "III" over and over. But hidden in there is one sneaky lowercase "i" sitting in the middle. The tricky part is that, with the font used, the lowercase "i" barely looks any different from the uppercase "I," apart from that little dot on top. And in a sea of repeating letters, that is easy to miss.

The ...