1.Nxc5	Bxc5
2.Rxc5!	dxc5
Now lines are clear for the White queen to access the 7th rank
3.Qg3+	Kh8
If 3... Kf7 4.Qc7+ Ke8 5.Qd7#
4.Qc7
And Black resigns
Ivanov-Litvinov (1972)