White to play. This position is a variation from So-Kasparov, St Louis 2016. What is White’s quickest kill? Answers to me at The Spectator by Tuesday 17 May or via email to victoria@spectator.co.uk or by fax on 020 7681 3773. There is a prize of £20 for the first correct answer out of a hat. Please include a postal address and allow six weeks for prize delivery.

Last week’s solution 1 Rxd6+

Last week’s winner Bruce Annat, Honley, West Yorks