Alex Bellos writes about maths and football. He has a degree in Mathematics and Philosophy from Oxford, and is a former South America correspondent for the Guardian. His books include Alex Through the Looking Glass, Visions of Numberland, Can You Solve My Problems? and So You Think You've Got Problems? as well as the Football School series of children's books, which he co-authors. He has been the puzzle columnist for the Guardian since 2015. Alex lives in London with his wife and two sons.