Black to play. This is from Vachier-Lagrave–Anand, Sinquefield Cup, St Louis 2016. White has played to win a pawn but what has he overlooked? Answers to me at The ­Spectator by Tuesday 30 August via email to victoria@­spectator.co.uk. 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 f6
Last week’s winner Dennis Owen, Urmston, Manchester