Rules of Reversi:
1You and the computer play by the same rules.
2To make a legal move, you must choose a square in which the pointer changes to a cross.
3You can choose Pass on your first move to force the computer to play first.
4After your first move, you cannot pass if you can make a legal move.
5If you cannot make a legal move, you must choose Pass from the Game menu.
6When neither you nor the computer can make a move, the game is over.
7The one with the most circles wins.