Reversi Othello, Duel

1. Black moves first; the game starts with four discs in the center.
2. Place a disc so it traps a straight line of your opponent's discs between it and one of yours.
3. Every trapped disc flips to your color — several lines can flip at once.
4. When the board is full or no one can move, the player with more discs wins.

Reversi Othello, Duel is played on an 8x8 board with discs that are black on one side and white on the other. The game starts with four discs in the center, and black moves first. On your turn you place a disc so that one or more straight lines of your opponent's discs — across, down or diagonally — are trapped between the new disc and one of yours, and every trapped disc flips to your color. When the board is full or neither player can move, whoever has more discs wins. You can face the computer, a friend on one device or an online opponent. Corners can never be flipped back, so getting one is worth far more than flipping lots of discs early.