Gomoku: five stones in a row

Gomoku, also known as Five Stones in a Row, is a strategic board game designed for two participants. Traditionally played on a 19x19 square board or a 15x15 board in its modern competitive format, players take turns placing stones of two distinct colors. The objective is to be the first to form an unbroken line of five stones of one's color, which can be achieved either vertically, horizontally, or diagonally. The game features various rule variations that introduce different elements to gameplay. It is believed that Gomoku originated in China over two millennia ago and has since gained global recognition, with numerous sporting events organized around it.