Black to play. This is from Cherin-Pedini, Italy 2016. Black has just sacrificed some material as he could foresee a simplifying manoeuvre leading to a winning ending. How did he continue? Answers to me at The Spectator by Tuesday 7 June or via email to victoria@spectator.co.uk or by fax on 020 7681 3773. 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 … Nxb4

Last week’s winner Roderick Adams, Dalkeith, Midlothian