Luke McShane

No. 663

White to play. A variation from Grandelius – Xiong, Fide World Cup, Sochi 2021. With an accurate queen check,White can force an exchange of queens and march the h2-pawn. Which check should White choose? Answers to chess@spectator.co.uk by Monday 26 July. 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 Qa8! After 1…Rg7 2 Qh1# or, 2 Qg8# against any other move.

Last week’s winner Bernard T. Golding, Whitley Bay

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