Daily chess puzzle: Check Mate #7

Another puzzle from Dragoslav Andric’s 1981 book “Matni Udar”.

Black to play and win

Marache v Morphy, 1857

Solution

Solved instantly, I suspect because, deep down, this position is from my chess education. I ‘feel’ I have seen it before.

1…Ng3!

and if 2 Qg6, Nde2 mate.