No. 261
Black to play. This position is from Gelfand-Carlsen, Fidé Candidates London 2013. What was the key move that enabled Carlsen to make the most of his queenside pawns? Answers to me at The Spectator by Tuesday 16 April or via email to victoria@spectator.co.uk or by fax on 020 7681 3773. The winner will be the