Challenge: The 'Red Cannon on File 9' Trap in the 'Double Horse Interlocking' Formation - Defensive Tips for the Black Player - Can you solve it?

When the Red Cannon is on File 9, the Red Chariot on File 8 strikes, and the Red Horse on File 9 interlocks, the Black player must be cautious. Let's dissect this formation like a historical battle, with deadly moves and unexpected counterattack opportunities.