White to play. This position is from Koneru-Zhukova, Monaco 2015. How did White quickly exploit the constricted position of the black king? Answers to me at The Spectator by Tuesday 3 November or via email to victoria@spectator.co.uk or by fax on 020 7681 3773. The winner will be the first correct answer out of a hat, and each week there is a prize of £20. Please include a postal address and allow six weeks for prize delivery.

Last week’s solution 1 … Nxb3+

Last week’s winner Thomas Watson, Glasgow