Utilizing the 7th-file Cannon retreating to the back rank to form a 'Cannon-check' mating net.
This position demonstrates the tactical precision of retreating a Cannon to the back rank to exploit the opponent's lack of defensive coverage. By pinning the King on the central file, Red forces a decisive checkmate through superior piece coordination. The key lesson is the mastery of long-range piece positioning to restrict the enemy King's mobility in restricted spaces.