no. 435
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White to play. This is a position from Topalov-Caruana, St Louis 2016. Can you spot White’s crushing blow? Answers to me at The Spectator by Tuesday 22 November 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 Rxd8+

Last week’s winner Alan Ward, Burgess Hill, West Sussex