Black to play. This is a variation from Osborne-Hawkins, British Championship, Coventry 2015. Black is a piece down. What is his idea? Answers to me at The Spectator by Tuesday 18 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 there is a prize of £20. Please include a postal address and allow six weeks for prize delivery.

Last week’s solution 1 Bg8+

Last week’s winner Ilya Iyengar, Amersham, Bucks