No. 714

Black to play. Smirnov – Duda, Chennai Olympiad 2022. With his next move, Duda forced a decisive gain of material. What did he play? Answers should be emailed to chess@spectator.co.uk by 9 August. 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 Last week’s solution: 1 Qh8! Depending on Black’s response, mate follows with Qb8, Qf8, Qe5 or Qd4.

Last week’s winner Richard Booth, Cheltenham, Glos.