Camillo Gamnitzer, Schach-Echo 1971
Position: K2n2B1/8/8/5N2/4k3/n2N3Q/8/8 w - - 0 1
 
mate in 4

Black: Nd8, Ke4, Na3
White: Ka8, Bg8, Nf5, Nd3, Qh3
Solution: 
Click to see solution below