The Classic game of strategy and skill . Play against the computer or a human opponent . 5 levels of difficulty to keep you challenged . Use the TakeBack button to undo a single move (or a series of moves) . If you need some help, use the Hint option to suggest a move . Video buttons let you review your game . Save unfinished games to come back later . Use the ‘Move Now’ button to force the computer to make its move . Includes rules on how to play the game