no. 432
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White to play. This is from Lasker--Teichmann, St Petersburg 1909. Black had already resigned this game as he could anticipate White’s crushing blow. What had he foreseen? Answers to me at The Spectator by Tuesday 1 November or via email to 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 Bxf7+

Last week’s winner Mike Loach, London SE21