Last week’s puzzle was a position from Grischuk – Bacrot (FIDE GP Berlin 2022).

White eventually won this game, but here Black missed a brilliant continuation:

20.. Nxe4! 21. Nxe4 Bxe4! 22. Rxc5 dxc5 and now after 23. Qe1 Rxd1+ 24. Qxd1 Rxh2, White can’t prevent Rh1 winning the queen, with an easily won ending.

Perhaps Bacrot missed the Back Row Mate! (I’ve been waiting 30 years for the chance to get that one in. The first time these players met was in the 1992 World U10 Championship, won by Richmond Junior Club’s Luke McShane.)