White to play. Rapport-Rogic, Austria 2010. Black threatens Qa1+ and then Rxf2+, so Rapport must strike at once. Which move did he play? Email answers to chess@spectator.co.uk by Monday 21 March. 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…Qxc3! Then 2 bxc3 Ba3+ 3 Kb1 Rd1 mate, or 2 Rxc3 Rxg7 and Black should win with the extra bishop.
Last week’s winner Rob Udy, Norwich

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