THIS is the brainteaser that asks you to combine more than one skill – pictures and words – in a punishing game of intellect.

Optical illusions can be a great way to boost brain ... A fourth commented: "The hate and respect I have for this tattoo is crazy right now." Then a fifth wrote: "It's a brilliantly eye-catching ...

Have you ever looked at an optical illusion and felt like your brain was playing tricks on you? Well, there’s one illusion from the 1980s that’s baffled people: the "elephant with too many legs.