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Korean Five-in-a-Row Game
The five-in-a-row stone game Korean children play
Omok is won by placing black and white stones in turn until one player lines up five in a row horizontally, vertically or diagonally. The name itself means linking five stones, and the same game is called wuziqi in China.
It seems to have been played in Japan from around the mid-18th century, and a book of recorded openings appeared in the 1850s. Once it became clear that moving first gives Black a large advantage, the renju rules were created to restrict Black's moves and keep the contest fair.
Today the Renju International Federation holds world championships, so it is also established as a competitive game.
Pick an empty intersection and confirm with Place or a double click. Neither colour may make a double-three or a line of six or more, and lining up exactly five stones wins.
online Omok starts right in your browser with nothing to install. Invite a friend, or practise alone against the Haetae bot. This game is in player testing.
Play OmokThe history and traditional play above are summarised from the public sources below. Names and rules vary a little from region to region.