no. 471
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White to play. This position is a variation from Vachier-Lagrave–Nepomniachtchi, St Louis 2017. How can White make a decisive material gain? Answers to me at The Spectator by Tuesday 29 August 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 e6

Last week’s winner John Boulton, Norwich