Challenge: Battle of the Generals: Red Chariot Surrounds, Black Cannon Waits for Opportunity - Online Chess Puzzle Super Hard - Can you solve it?

Red Chariot on file 7 advances to rank 2, Red Advisor on file 4 moves up to rank 2. Black Cannon on file 4 waits for a counterattack in an extremely tense position. Lessons on defense and counterattacking from Black's perspective.