The Mac’s Chess program, located in the Applications folder, lets you compete against the computer or a human partner. You can open Chess and compete within the Game Center environment.
What’s more, by choosing Chess → Preferences, you can change the board style and pieces, from the wooden board to grass, marble, or metal. You can also drag a slider inside Chess Preferences to make the computer play faster or stronger.
Just like HAL, your Mac can speak as it makes its moves — in about two dozen voices, no less, from Deranged (probably appropriate for HAL) to Hysterical. Then again, you can speak back, so long as Allow Player to Speak Moves is selected in Chess Preferences. Try it out for size by saying something like “Pawn e2 to e4 to move the white king’s pawn.”