Black to play. This is a variation from Caruana-Carlsen, World Championship (Game 10), London 2018. The black queen is trapped but Carlsen had planned an ingenious counter. What is it? Answers via email to email@example.com by Monday 3 December (please note early closing date). There is a prize of £20 for the first correct answer out of a hat. Please include a postal address and allow six weeks for prize delivery.
Last week’s solution 1 Re3
Last week’s winner Malcolm Burn, Tuffley, Gloucester