It's a goog old Hexagon game. You have checkers of one color and your opponent of another one. If you choose a checker that has free cells next to it, you can duplicate the checker placing the new one to one of these cells. You also can move a checker two cells. If you place a checker next to the opponent's one, the opponent's checker is converted into yours. If there are several opponent's checkers in the adjoined cells, they are all converted.