Mate in 3... I ll give you a clue... Rook a7 to A1 then bishop h7 to .... and checkmate w

Mate in 3... I ll give you a clue...

Rook a7 to A1 then bishop h7 to .... and checkmate with the rook f8 to ....

Fill the blanks
Mate in 3... I ll give you a clue...
Rook a7 to A1 then bishop h7 to .... and checkmate w