Dubov-Svane, White to play. Later in the event, Dubov played another masterpiece, sacrificing a rook to reach this extraordinary position. It takes one more delicate sacrifice to conclude the attack. Which one? Answers to ‘Chess’ at The Spectator by Tuesday 19 November or via email to victoria@spectator.co.uk. There is a prize of £20 for the first correct answer out of a hat.