Gomoku

Connect exactly 5 of the same stones in a row (horizontally, vertically or diagonally).

Put your stone on any vacant point of the board. Strive to create a row of five stones in a line, either sideways, vertically, or at an angle. Stop your rival from completing their own row of 5. Take turns putting pieces with your rival until one participant wins in forming a row of 5. Note that the game concludes immediately when a line of five is created, with no need to cover the entire board.