Lichess: Difference between revisions

{{short description|Internet chess platformserver}}

| launch_date = 20 June 2010 ({{Age in years|2010|06|20|}} years ago)<ref>{{cite web|title=How old is lichess?|url=http://lichess.org/qa/55/how-old-is-lichess|last1=Duplessis|first1=Thibault|website=Lichess.org|date=2014-08-05|access-date=12 June 2018|archive-url=https://web.archive.org/web/20180612233233/https://lichess.org/qa/55/how-old-is-lichess|archive-date=2018-06-12|url-status=dead}}</ref><!-- "Thibault" is the founder of lichess. You can find the date by hitting 'inspect element' on the 'one year ago' text for his answer, as the site uses moment.js to reformat dates-->

'''Lichess''' ({{IPAc-en|ˈ|l|iː|tʃ|ɛ|s}}; {{Respell|LEE|ches}})<ref>{{Cite web|url=https://lichess.org/qa/46/how-do-you-pronounce-lichess|title=How do you pronounce Lichess?|website=Lichess.org|access-date=2018-10-07}}</ref><ref>{{Cite AV media|url=https://youtube.com/watch?v=KRpPqcrdE-o|title=How to pronounce Lichess|type=YouTube Video|date=2020-01-22|publisher=Lichess on YouTube|access-date=2022-08-30}}</ref> is a [[free and open-source software|free and open-source]] [[Internet chess server]] run by a [[Nonprofit organization|non-profit organization]] of the same name. Users of the site can play [[online chess]] anonymously and optionally register an account to play [[Chess rating system|rated games]]. Lichess is ad-free and all the features are available for free, as the site is funded by donations from patrons[[patron]]s.<ref>{{cite web|title=Why is lichess free?|url=https://lichess.org/blog/U4skkUQAAEAAhIGz/why-is-lichess-free|website=Lichess.org|date=2 July 2014 |access-date=Jul 2, 2014}}</ref><ref>{{cite web|title=Lichess Features|url=https://lichess.org/features|website=Lichess.org|access-date=5 December 2016}}</ref><ref>{{cite web|title=Become a Patron of lichess.org|url=https://lichess.org/patron|publisher =Lichess|quote =We are a non‑profit association because we believe in a free, world-class chess experience for anyone, anywhere. We rely on support from [lichess users] to make it possible. If you've gotten something out of lichess, please take a second to pitch in!|access-date=22 November 2017}}</ref> Features include [[chess puzzle]]s, [[computer chess|computer analysis]], [[chess tournament|tournaments]] and [[chess variant]]s.

For registered players, Lichess employs a [[Glicko rating system|Glicko-2]]<ref>{{cite web |title=Rating Distribution |url=https://lichess.org/stat/rating/distribution/blitz |website=lichess |access-date=8 July 2020}}</ref> [[Chess rating system|rating system]], and grants the ability to compete in [[Chess tournament|tournaments]], post in the forums, and request a server-side full game analysis for any finalized game. The ratings for standard chess are categorized into Ultrabullet, [[Bullet chess|Bullet]], [[Blitz chess|Blitz]], [[Rapid Chess|Rapid]], or Classical, or Correspondence depending on the game's total time or estimated total time (if using [[Fischer time control]] which increments time after each move).