Daily chess puzzle: Check Mate #446

Another puzzle from Dragoslav Andric’s 1981 book “Matni Udar”.

White to play and mate Black. 

Durga v Jablonicki, Czechoslovakia 1977

Solution 

An instant one today, 1 Rd8 seen automatically, and either Re8mate or Qg7mate follows.  A rest day.

FEN 

4r1k1/pp3p1p/5qp1/2P2N2/3R4/2Q2bP1/P4K1P/8 w – – 0 1