no. 446
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White to play. This position is from Tabatabaei-Vakhidov, Aeroflot Open, Moscow 2017. White has sacrificed a piece for a powerful attack. Can you spot his crushing breakthrough? Answers to me at The Spectator by Tuesday 7 February 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 ... Qxb3

Last week’s winner Peter Dearnley, Leeds