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Gomoku (Renju) is an abstract strategy board game.

Gomoku (Renju) is an abstract strategy board game and is also called Five in a Row. It is traditionally played with go pieces (black and white stones) on a go board (19x19 intersections).
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.
- Wikipedia.

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