White to play. Menchik-Graf, Women’s World Championship, Semmering 1937. Which brilliantmove provoked instant resignation? Beware: there is a tempting option which falls short. Email answers to chess@spectator.co.uk by Monday 8 April. 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 Qh7! Rxb3 2 Qb1# or 1… Rc2 2 Qxc2# or 1…Rh2 2 Qxh2#
Last week’s winner Robert Kocar, Caterham, Surrey
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