Gomoku

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

Place your piece on any empty intersection of the board. Try to form a row of five pieces in a line, either horizontally, up and down, or diagonally. Stop your competitor from achieving their own sequence of five. Alternate setting markers with your opponent until one player achieves in making a line of five. Note that the match finishes immediately when a sequence of 5 is created, with no need to cover the entire board.