A seemingly simple chess position, yet it conceals a ruthless checkmate strategy. The Red Rook moves like a prowling tiger, while the Black Cannon desperately defends. Every move is a tense battle of wits, where the skill of the player decides the fate of the pieces. Discover the 'Cannon Immobile, Rook Decisive' formation - one of Vietnam's most classic chess strategies, where psychological pressure and peak tactics intertwine.