The only game bundled with Mac OS X is Chess, also located in the Applications folder. Chess is a full-featured chess game that includes support for speech recognition. The Chess interface, shown in Figure 5.8, is simply beautiful.
Figure 5.8. Chess is a GUI front end to GNUChess.
When Chess starts, it displays a new board ready for play. Move a piece by dragging it from its original position to the location you want. If a move is invalid, Mac OS X plays the system beep, refuses the move, and displays a message in the window's title bar.
To control the game's difficulty or to change to a computer-computer or human-human game, open the Chess Preferences dialog box. Use Chess's preferences to control how difficult the game will be, who is playing, and whether speech recognition should be used.
Finally, if you've selected the Computer vs. Computer option in the Chess Preferences dialog box, the game won't start until you click the Start Computer Vs. Computer Game button in the Controls dialog box, which is accessed via the Game menu.
You can access a few additional preferences by choosing the Controls option from the Game menu. In the Controls dialog box, each player is represented by a chess piece, as shown in Figure 5.9. Beneath each player's settings is a white progress bar. When the computer is thinking about a move, the bar fills in from left to right to indicate how close the computer is to making a move. To force the computer to move before it has finished thinking, click the Force Computer To Move button.
Figure 5.9. Use the Controls dialog box to set some additional game preferences.
Clicking the color well to the right of the player name launches the system Colors panel where you can choose a new color for each player's pieces. The color is not applied until you click the Set Piece Colors button. Keep in mind, however, that the game still makes references to the pieces using their original colors.
The Move menu is used to ask for a hint and to replay or take back the last move. In a sense, the Move menu lets you cheat.
Use the View menu to toggle between a grayscale two-dimensional representation of the board (Shift-Command-A) and the default 3D board (Shift-Command-B).