Daily chess puzzle: Check Mate #458

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

Westerinen v Sigurjonsson, New York 1978
Solution 
1 Qg7+! forced by Black’s dire threats, but winning. 1… Kg7[] 2 Bd8+!! 

2…Kh8 (2…Kh6 3 Rh3 mate)

3 Rg8+!

3 ?..Rg8[] 4 Bf6+

and 5 Bg7+ 6 Bd4+ 7 Rg7+ 8 Bb2 +-

FEN 
1r3rk1/3Q2pp/p3p3/6B1/3np3/6R1/PqP1B2P/3K2R1 w – – 0 1