White to play. Gukesh–Yip, Gelfand Challenge, June 2021. White has strong pressure on the f-file, but which move forces a decisive material gain? Answers should be emailed to chess@spectator.co.uk by Monday 28 June. 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…f3+ 2 Bxf3 Bxb5 wins a rook, e.g. 3 Nxb4 Bxf1+ 4 Kxf1 Rxf3
Last week’s winner Nikunj Sinha, Dagenham, Essex

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