A game for two players. Eighteen pieces are used, nine black, nine white. One player has the black pieces, the other has the white. The players take turns to lay the pieces on the board. Pieces are laid on the (numbered) corners and junctions. When all the pieces are laid the players take turns to slide a piece of their colour along a line to an adjacent empty corner or junction. A line of three pieces of the same colour is called a Mill. A player forming a Mill removes one of the other player's pieces. A removed piece is not used again. A player wins when the other player has only two pieces left or is unable to move.