no. 465
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White to play. This is from Nepomniachtchi-Korobov, Khanty-Mansiysk 2017. Black’s king is clearly in desperate trouble. What is the most accurate way to finish off? Answers to me at The Spectator by Tuesday 18 July 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 ... Nd5

Last week’s winner Trevor Lloyd, London WC1