Daily chess puzzle: Check Mate #442

Another puzzle from Dragoslav Andric’s 1981 book “Matni Udar”.  
White to play and mate Black. 

Karpov v Csom, Bad Lauterberg 1977
Solution 

1 Nf5! is an automatic decision, referring once again to Jacob Aagaard’s excellent new book, ‘Thinking inside the box’. 
If e.g. 1…Nd7 then 2 Qh2+! and 3 Qg3+

 followed by 4 Qg7 mate. And on other moves then Rh7+ and Qg7 mate follow. 

FEN 
q3rn1k/ppQR4/4pp2/8/P1P5/1P4N1/6n1/6K1 w – – 0 1