1.Nf6+!
gxf6
If 1... Nxf6 2.exf6 Qd6 3.Bxh7+ Kxh7 4.Qh5+ Kg8 5.Qg5
2.Qg4+
Kh8
3.Qh4
And Black resigned
Safonov-Kutepov (1954)