Camillo Gamnitzer, Schach Echo 1971
Position: 8/4N3/1k1P4/R1N5/8/4P3/1P3K2/4B2b w - - 0 1
 
mate in 4

Black: Kb6, Bh1
White: Ne7, d6, Ra5, Nc5, e3, b2, Kf2, Be1
Solution: 
Click to see solution below