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Connect6 rules

There are two players. X and O.

Connect6 is played on a square grid like tic-tac-toe. Grids smaller than 6×6 are automatic draws. 19×19 Go boards might be the most convenient.

X plays first, putting one X in one box. Then X and O take turns, each marking two boxes each turn.

The player who is first to get six or more in a row (horizontally, vertically, or diagonally) wins.

The handicap of X only marking one box the first turn makes the game fair; unlike games such as tic-tac-toe and Connect Four, which give the first player a large advantage.

Source

Modified from wikipedia.