A tricky brainteaser has created a stir online, with many social media users claiming it to be the “toughest”. A social media post on Reddit challenges readers to solve the toughest brainteaser they know, and it has left many people perplexed.

In response to the Reddit post, ‘What is the toughest brainteaser you know of?’, one user shared: “You have two lengths of rope. If you set fire to the end of either of them, the rope will burn in exactly one hour. They are not the same length or width…