You alternate between White and Black with each new game. Black always move first.

On your turn, click the mouse on a blank square where you want to place one of your pieces. You must place your piece so that there are one or more of the computers pieces between the piece you are placing and one of your pieces already on the board.

All of the "sandwiched" pieces are then flipped so they are the opposite colour. The computer then takes its turn. The object of the game is to have the most pieces when the board is filled!