Chess.com is an internet chess server, internet forum and social networking website. Chess.com is the world's #1 chess website and has more than 50 million users. The site has a freemium model in which some features are available for free, and others for accounts with subscriptions. Live online chess can be played against other users at daily, rapid, blitz or bullet time controls, with a number of chess variants available. Chess versus an AI, computer analysis, chess puzzles and teaching resources are also offered.