A tricky brainteaser created by ARF Private Investigators is challenging Brits to spot a cheating man in just five seconds. The puzzle presents two seemingly identical images of a man sending a selfie to his wife who is away on business, but a subtle clue reveals one is being unfaithful.
While most people take an average of 15 seconds to find the difference, only one in ten can solve it under five seconds. The quickest solvers are said to have a high IQ and razor-sharp attention to detail.
For those struggling, the answer lies in the glass on the kitchen table, which bears a slight lipstick smudge, indicating another woman is nearby. The puzzle is part of a series designed to test visual skills and concentration.
Another riddle for the savvy: 'I have keys but no locks. I have space but no room. You can enter, but you can't go inside. What am I?' The answer is a keyboard.
