Daily chess puzzle: Check Mate #166

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

Crustoph v Muth, Hamburg 1948

Examine all biffs: 1 Bc6+

and if 1…Kd8. 2 Qd7mate, so 1…Qc6[] when 2 Rf8+!

2…Kf8 (2…Rf8 3 Qe7 mate) 3 Qe7+  (3 Be7+ is probably a move or two faster, but Qe7+was the line I worked out when solving the puzzle) Kg8

And now they standard mating moves 4 Qe6+ Kf8[] 5 Be7+ Ke8 6 Bf6+ Kf8[] 7 Qe7+

and 8 Qg7 mate.

4kb1r/4n1pp/3pQ3/1p4B1/2q5/5B2/1PP3PP/5R1K w k – 0 1