Challenge: Red Rook Retreats to File 8: A Strategy to Defeat the Black Rook in 5 Moves - Can you solve it?

The Red Rook retreats from file 8 to file 7, creating an opportunity for the Red Horse on file 8 to deliver a decisive strike against the Black Advisor on file 4, rank 8. A detailed analysis of how the Black Advisor must defend to avoid defeat.