No. 888
From our UK edition
Black to play. Sigurjonsson-Timman, Wijk aan Zee 1980. Timman has sacrificed a rook to open up White’s king. His next move was a decisive blow. What did he play? Email answers to chess@spectator.co.uk by Monday 2 March. There is a prize of a £20 John Lewis voucher for the first correct answer out of a