no. 473
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Black to play. This is from Kasparov-Navara, St Louis Blitz 2017. White has just given what appears to be a powerful check on c6. How did Black respond? Answers to me at The Spectator by Tuesday 12 September 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 Qxc6

Last week’s winner Renwick Russell, Guernsey