From website
Start: 12 stones of their own color for each player, arranged in pairs around the board.
Play: Players take turns moving one of their stones any distance along an unobstructed line, in any direction, to an unoccupied node. Through the 3 pentagons movement may follow either fork.
Goal: To be the first player to link up 5 adjacent stones on the same line. Here are some sample winning positions: