India, April 18 -- Optical illusions are fascinating mental exercises that not only test your vision but also challenge how your brain processes information. They often leave us second-guessing what we see and are a favourite among puzzle lovers. If you're someone who enjoys optical illusion brain teasers, we've got a tricky challenge that might just leave you scratching your head.

(Also read: Optical illusion: If you can count all the dots in this image, you'll earn title of puzzle king of the day)

A Facebook page named Minion Quotes recently shared an image that has gone viral among puzzle lovers. The post features a bright yellow background filled with rows of adorable white illustrated ducks. At first glance, it might look like a si...