1.Bf8+ Kh7 and now for the quiet move 2.Bg7 leaves the black king without any escape squares as he is caught in a mating net. Now all white has to do is attack the king with 3.Nf8#. if 2… Ng5+ then 3.Nxg5# Black has an extra rook and is up an exchange and threating to queen the a pawn but he can not get out of the mating net.
1.Bf8+ Kh7
and now for the quiet move
2.Bg7 leaves the black king without any escape squares as he is caught in a mating net. Now all white has to do is attack the king with 3.Nf8#.
if 2… Ng5+ then 3.Nxg5#
Black has an extra rook and is up an exchange and threating to queen the a pawn but he can not get out of the mating net.
1. Bf8+ Kh7
2. Bg7 Ng5+
Anything else: 3. Nf8#
Nxg5#
1. Bf8+!!.Kh7 forced
2. Bg7!!!. Ng5+
3. Nxg5#
If 2……..Any other move 3. Nf8#
Harry
Bf8+ Kh7
Bg7 if Ng5+
then NxNg5#
else Nf8#
Bf8, Bg7, Nf8+#