Gomoku is a strategic game for two players, played on a board 15x15. One of the players plays with
, the other with
. Players alternate placing
on the empty places on the board, while one of them makes 5 in a row (horizontally, vertically or diagonally) or there are no empty places left. The player with
always starts first. In the case that the board is entirely filled, the game is considered as a draw.