Challenge: Red General: Checkmate Strategy from Double Horse Interlock - Can you solve it?

The Red Chariot on file 6 directly pierces the Black Elephant on file 3, rank 10. The Red Cannon on file 2, rank 4 fires through the Black General's chest. The Black Horse on file 4, rank 9 is trapped, and the Black Advisor on file 5, rank 9 cannot escape. The minimal defense for the Black General is for the Black Pawn on file 5, rank 3 to counterattack the Red Cannon.