The Six Nations Championship is underway, with some of the best international rugby sides in the world going head-to-head.

To mark the occasion, Betway has created a brainteaser to help fans get into the tournament. Brainteasers come in many different shapes and sizes, but there are three main types.

They can be analytical, observational or mathematical. Analytical brainteasers ask people to work out a riddle, while mathematical brainteasers ask people to solve a maths question.