On a summer night when the cold wind swept across the chessboard, the Red army launched a surprise attack with the rook on 4-9, like a dark beast invading Black's position. What is the shortest path to destroy the enemy's defensive pawn? Why does the empty cannon become a secret weapon in chess warfare? Join Grandmaster Old Master as he uncovers the hidden schemes behind this wooden board – where a general's survival depends on just three pieces.