White to play. This is from Hebden-Arkell, British Championship, Torquay 2013. White is a pawn ahead in this endgame but his next move eliminated any doubt that this would result in a victory. What did he play? Answers to me at The Spectator by Tuesday 20 August or via email to victoria@spectator.co.uk or by fax on 020 7681 3773. The winner will be the first correct answer out of a hat, and each week I shall be offering a prize of £20. Please include a postal address and allow six weeks for prize delivery.

 
Last week’s solution 1 Qh5 (meeting 1… gxf4 with 2 Ng4)
Last week’s winner P.A. Sarluy, The Hague