no. 558
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White to play. This position is a variation from Ding Liren-So, Stavanger 2019. White could continue the attack with 1 Qc3 but which move wins material at once? Answers to me at The Spectator by Tuesday 18 June 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 Rd6

Last week’s winner Peter Durow, London W4