For the past 24 years, the Royal Statistical Society has published a wickedly difficult Christmas quiz to entertain puzzle fans over the festive break – and this year’s challenge, set by Dr Tim Paulden, may well be one of the toughest yet. Cracking the thirteen problems below will require a blend of general knowledge, logic, and lateral thinking skills – but, as usual, no specialist mathematical knowledge is needed.
Two helpful tips for budding solvers:
- You may make use of any tools or resources you wish to help solve the problems, including books, internet search engines, computer programs, and so on.
- You may find several of the question titles helpful; for full credit, these titles should be briefly explained within your answers.
Prizes of £150 (for the winner) and £50 (for the runner-up) in Wiley book vouchers will be given to the two highest-scoring entries.