Abalone is a two-player strategy board game in which the players are represented by marbles of opposing colors. The objective is to push six of the opponent's marbles off the edge of the board.
The board consists of 61 circular spaces arranged in a hexagon, five on a side. Each player has 14 marbles that rest in the spaces and are initially arranged as shown at left. Play alternates between the players one move at a time, with the black marbles moving first. For each move, a player moves a line of one, two or three marbles one space. The move can be either in-line (serial in respect to the line of marbles) or broadside (parallel to the line of marbles).
A player can push their opponentâ€²s marbles which are in an adjacent space to their own with an in-line move only. They can only push if the pushing line has more marbles than the pushed line (three can push two or one; two can push one). Marbles must be pushed into an open space (i.e. not blocked by a marble of either colour) or off the board. The winner is the first player to push six of the opponent's marbles off of the edge of the board.