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White to play. This position is from Van Foreest-Bortnyk, St Louis 2019. How did White break through on the kingside with a fine blow? Answers to me at The Spectator by Tuesday 1 October or 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 Qxe8+

Last week’s winner Reginald Chaplin, Woodford Green, Essex