White to play. This is a variation from Carlsen-Leitao, Brazil 2014. White has a big attack on the kingside which Black is attempting to defuse by offering to exchange queens. How can White continue? Answers to me at The Spectator by Tuesday 29 April 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 shall be offering a prize of £20. Please include a postal address and allow six weeks for prize delivery.
 
Last week’s solution 1 … Rxh4+
Last week’s winner Phillip Gardner, Herts