White to play. Greco–NN, 1620. The centre is a dangerous place for the king. Which move does White play to force mate in two moves? Answers should be emailed to chess@spectator.co.uk by Tuesday 3 August. There is a prize of £20 for the first correct answer out of a hat. Please include a postal address.
Last week’s solution 1 Qf4+ Kd5 (1…Kd3 2 Qg3+ is similar) 2 Qg5+ Qxg5+ 3 Kxg5 Ke6 4 Kg6 Ke7 5 Kg7! and White’s h-pawn soon queens. Not 1 Qe6+ Kc3!
Last week’s winner Mark Holmes, Basford, Nottingham

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