|amazonuk=<amazonuk>1843179539</amazonuk>
|amazonus=<amazonus>1843179539</amazonus>
}}
{{competition
|prize=a copy of ''How to Think Like Sherlock: Improve Your Powers of Observation, Memory and Deduction'' by Daniel Smith
|text=Three people will each win a copy of the book. For your chance to win just answer the following question:
Complete this sequence of numbers: 1, 4, 9, 16, 25, 36, __
|date=2 January 2013
}}