Bf6+, after the only legal move Kh7, then eventually trade the bishop for the knight? (Blackโs bishop is useless since you can just move the rook and king to light squares, eventually forking the king and bishop with your rook. (Idk, the bishopโs continued existence would still deprive you of the zugswang required for a lone rook mate). Or, you could trade your bishop for the knight and then move your king into opposition using only the light squares to deprive black of any forced drawing positions
A rook vs bishop ending is usually a draw (with few exceptions). It's not the solution here. For some hints, you can read some of my comments below.
All good so far, but the line continues. Black still has a tricky defensive idea up its sleeve.
Yeah Iโve tried in a chess app with the AI difficulty set to max, the knight almost immediately ends up winning your rook and forcing a draw