1...	Nxe3!
2.fxe3	Bxg3+!
3.Kxg3
3.Kg1 Bh2+ comes to the same thing
3...	Qg5+
Not 3... Qe5+ immediately because of 4.Kf2
4.Kh2	Qe5+
5.Kg1	Qg3+
And mate next move
Blumenov-Keres (1933)