no. 528
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White to play. This position is from Khmelniker-Harari, Isle of Man 2017. How did White make the most of his passed c-pawn? Answers to me at The Spectator by Tuesday 23 October or via email to 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 Qxe8+

Last week’s winner Antony Heal, London SE23