Classic game from ancient China

Gomoku, also called Five in a Row, is an abstract strategy board game. It is traditionally played with Go pieces (black and white stones) on a Go board. Because pieces are typically not moved or removed from the board, gomoku may also be played as a paper-and-pencil game. The game is known in several countries under different names.


Players alternate turns placing a stone of their color on an empty intersection. Black plays first. The winner is the first player to form an unbroken chain of five stones horizontally, vertically, or diagonally.



  • The player who places 6 or more checkers on the line wins.
  • The first move of the black player is always in the center of the board.
  • The second black move is played outside the marked region.

Gomoku Pro

  • The game is played on a 15x15 board.
  • The first player places 1,2,3,4 or 5 pieces on the board.
  • The second player switches sides or continues the game.
  • There is no draw. The first player, who has no theoretical chance to win, has lost the game.

Gomoku Pro 9x9

Version of gomoku pro played on 9x9. In the picture black is the winner.


Last modified July 31, 2021: Game rules (08d2809)