Red coordinates two active cannons with the 2nd-route knight to deliver a lethal, unstoppable mating sequence against the trapped Black King.
Red commands immense tactical initiative by anchoring the flank with a high knight while double cannons exert suffocating pressure along the central and rib files. Black's solitary king is severely constrained by its own blocking advisor and advanced pawns, rendering the distant chariot unable to provide timely defense. The essential endgame lesson highlights precision artillery coordination: using the knight to seal escape paths while alternating cannon screens to force rapid capitulation.