Our eyes can be surprisingly unreliable when it comes to the world of optical illusions. These clever puzzles are designed to confuse the brain as they manipulate how we process visual information.

A colourful line pattern hides a secret number in this optical illusion puzzle. Look carefully and see if you can spot it in ...

If Paris is to France and Rome is to Italy, Tokyo is to… What would the correct answer be? If you took Part 1, you already know the idea – this isn’t your usual trivia. Instead of long questions, we ...