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The game is played on a vertical hollow game board into whichtheplayers drop their tokens alternately. The game board consistsofseven columns and six rows.
Each player has 21 checkers, yellow or red with yellowstarts.
The winner is the player who manages to be the first to bringfouror more of his playing pieces horizontally, verticallyordiagonally in a line. The game ends in a draw when the boardiscompletely filled, without a player has formed a four-line.