Challenge: Red General Chess: Unexpected 'Chariot Penetration' Strategy at Position L5 - Can you solve it?

A rare chessboard setup with the Red Chariot at L5, R3 and the Red Cannon at L4, R2 creates a surprising 'checkmate' opportunity. The Black General at L6, R9 is vulnerable to a 'chariot thrust' when the Red Advisor at L6, R1 coordinates an attack.