White to play. This is from Kasimdzhanov–Kramnik, Tromsø Olympiad 2014. How did White blast through? Answers to me at The Spectator by Tuesday 19 August 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 Qxf7+
Last week’s winner Michael Greer, London, N5