No. 722

Black to play and win. A variation from the game Aronian-Ivanchuk, Julius Baer Generation Cup, September 2022. Ivanchuk could have reached this position, where he can now win at least a knight by force. What should Black’s next move be? Email answers to chess@spectator.co.uk by Monday 3 October. 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 Qa6! Then 1...Kxd2 2 Qh6#, or 1...cxd2 2 Qa1# or 1...Kb2 2 Nd3#

Last week’s winner Tim Kruger, Aylesbury