Black to play. Erigaisi-Dubov, Tata Steel India Blitz, November 2024. Dubov chose Rg4-e4, overlooking a tactical shot that would have won the game. What was the winning move? Email answers to chess@spectator.co.uk by Monday 25 November. 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 Be8! threatens 2 Qxb8#. If 1… Kxe8 2 Qc8# or 1… Qxe8 2 Nxe6#
Last week’s winner Alan Ward, Burgess Hill, West Sussex

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