Othello, aka Reversi. A derivative of the classic 'Go', your objective is to fill the board with your color by surrounding your opponent. You are the black pieces. Click on a square to place your piece, but it must be placed so that one or more white pieces will be between the new black piece and existing black pieces. The white pieces will be converted to black. Your objective is to convert as many of your opponent's white pieces into your black pieces.