To start a new rated or unrated game against the computer, click on the New Game button. This launches a dialog which allows you to enter time control , colour selection and opt for unrated or rated mode. If unrated mode is selected, three other options are available, untimed mode, the start position (in FEN format), and the target rating of your computer opponent.

There are various computer opponents, each with a different set of configuration options related to the strength of the engine used for that particular opponent. Computer opponents are rated using the Glicko rating system, the same system used to rated you, as you play against the computers.

In rated games, the opponent which most closely matches your current rating is chosen. For unrated games, you can set the target rating yourself, with the default set to 1500.