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

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