Easy Gomoku!

Gomoku is an abstract strategy board game. Also called Gobang or Five in a Row, it is traditionally played with Go pieces (black and white stones) on a go board with 19x19 (15x15) intersections;[1] however, because pieces are not moved or removed from the board, gomoku may also be played as a paper and pencil game. The winner is the first player to get an unbroken row of five stones horizontally, vertically, or diagonally.