White to play. This is from Bluebaum-Anand, Grenke 2018. Anand has been having a rough time in the elite Grenke tournament. What was the subtle move that allowed his opponent to create intolerable pressure in this endgame? Answers via email to email@example.com by Tuesday 17 April. 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 Nxa7
Last week’s winner Martin Axworthy, Cheltenham, Gloucestershire