No. 758
From our UK edition
White to play and win. Composed by Josef Hasek, 1929. One plausible try is 1 Kc5 but 1…f5! prepares to meet Kc5-d6 with Rf8-f6+. Which first move should White prefer? Answers should be emailed to chess@spectator.co.uk by Monday 3 July. There is a prize of £20 for the first correct answer out of a hat.