Lichess is an Internet chess server. Anyone can play anonymously, although players may register an account on the site to play rated games.
Lichess - homepage
According to the Alexa rank, Lichess is ranked second only to Chess.com as one of the most popular online chess servers in the world.
Lichess runs live tournaments both in standard chess and in variant chess, and at different time controls, with the slowest time control being 10 minutes per game.
A Lichess mobile app is available for iOS and Android.
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