No. 837
White to play. Gukesh-Praggnanandhaa, Tata Steel Masters tiebreak, 2025. Black’s last move, 35…Qd3-d6 was a blunder. Which move did Gukesh play to exploit it? Email answers to chess@spectator.co.uk by Monday 17 February. There is a prize of a £20 John Lewis voucher for the first correct answer out of a hat. Please include a postal
