Othello is played on a 8x8 grid with each side having 32 discs that are either black or white. Whoever has the black discs goes first. The board initially has two black discs and two white discs in the 4 center squares and they are placed diagonally. Every time you move, your newly placed disc must sandwich the other color disc with the newly placed disc and a disc of the same color. All discs between them will be turned into your color discs. If you cannot make a move that does this, you have to pass your turn and your opponent gets to move again. The game ends when both sides do not have any legal moves. Whoever has the most discs of the same color wins.