White to play. This position is a variation from Kramnik-Nakamura, London Classic Blitz 2014. How can White make a decisive material gain? Answers to me at The Spectator by Tuesday 27 January 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 I am offering a prize of £20. Please include a postal address and allow six weeks for prize delivery.

Last week’s solution 1 Bh7+

Last week’s winner Keith D. McDermott, Allerton, West Yorkshire