No. 719

White to play. Cornette-Feller, French Champion-ship, August 2022. Black has just played 13...h7-h6. How did White capitalise on this mistake? Email answers to chess@spectator.co.uk by Monday 12 September. There is a prize of £20 for a correct answer out of a hat. Please include a postal address and allow six weeks for prize delivery.

Last week’s solution 1 c3! Qxf4 2 g3! wins. Any queen move to an unguarded square allows a knight fork

Last week’s winner Richard Hughes, London SW17