Gobang (Master) app for iPhone and iPad

Gobang 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 intersections; however, because once placed, pieces are not moved or removed from the board, Gobang may also be played as a paper and pencil game. This game is known in several countries under different names.
Black plays first, and players alternate in placing a stone of their color on an empty intersection. The winner is the first player to get an unbroken row of five stones horizontally, vertically, or diagonally.

The origin of Gobang seems to be from China. Its also named as "Gomoku" .The name "Gomoku" is from the Japanese language, in which it is referred to as gomokunarabe (五目並べ). Go means five, moku is a counter word for pieces and narabe is often associated with these kind of games, meaning something akin to lining things up. It is traditionally played with go pieces (black and white stones) on a go board, however, because once placed, pieces are not moved or removed from the board, Gomoku is often played on paper with naught and crosses similar to Tic-Tac-Toe.

The rules are pretty simple. Black plays first, and players alternate in placing a stone of their color on an empty intersection. The winner is the first player to get an unbroken row of five stones horizontally, vertically, or diagonally.