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

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.

An optical illusion which supposedly shows two dogs on a snowy walk alongside a person has stumped a host of Reddit users.

And you're not crazy. This psychological midfield ... and leave you doubting everything you have ever known. This optical illusion is tricky because the letters aren't immediately obvious despite ...