Gomoku

Put your marker on any empty intersection of the board. Strive to create a line of five markers in a line, either sideways, vertically, or diagonally. Stop your opponent from forming their own sequence of 5. Take turns placing stones with your competitor until one contestant achieves in making a row of 5. Keep in mind that the contest concludes immediately when a line of five is formed, with no need to fill the entire board.