White to play and mate in two moves. Composed by V. Antipov, Kudesnik, 1998. Email answers to chess@spectator.co.uk by Monday 19 February. 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 Qg5+! Kf7 (1…Kh7 is similar) 2 Qf5+ Qxf5 3 Kxf5 wins, e.g. 3…Kg7 4 Kg5! Kh7 5 Kf6 etc

Last week’s winner Jon Boyle, East Horsley, Surrey