Gomoku, also known as Five in a Row, is a strategic board game for two players. Played on a grid of 19x19 (traditional) or 15x15 (modern) intersections, participants take turns placing black or white stones. The goal is to create an unbroken line of five stones vertically, horizontally, or diagonally. Variations exist with slight rule differences. With origins tracing back over two millennia to ancient China, Gomoku has gained global popularity and is now featured in competitive tournaments. Simple in concept yet deep in strategy, the game challenges players to outmaneuver their opponent while blocking their progress. It remains a timeless test of foresight and tactical skill.