Lichess

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Lichess
Type of site
Internet chess server
Available inOver 80 languages (over 25 translations complete)
Created byThibault Duplessis
Websitelichess.org
Alexa rankGlobal Rank 2,539 on 20 November 2017.
CommercialNon-profit & donation-only
RegistrationOptional[1][unreliable source?]
Launched3 June 2010[2]
Current statusActive
Written inScala, JavaScript, HTML and CSS[3][need quotation to verify]

Lichess (About this sound/'liː-tʃɛs/ [4][need quotation to verify]) is an Internet chess server. Anyone can play anonymously, although players may register an account on the site to play rated games. All features are available for free, as the site is funded by donations.[5][6][7]

Features[edit]

The website allows users to play games of live and correspondence chess against other players at different time controls. It has training features, including chess basics, tactics training, chess coordinates and studies.[8][9][need quotation to verify] It also has a section where chess coaches can advertise their services to users.[citation needed]

In addition to enabling blindfold chess,[10] the website supports the following chess variants:[11]

  • Antichess (Losing chess)
  • Atomic chess
  • Chess960 (Fischer Random Chess)
  • Crazyhouse [12]
  • Horde (a variant of Dunsany's chess)
  • King of the Hill
  • Racing Kings
  • Three-check chess

Lichess has features to assist visually impaired people to play chess on the website.[13] It also has a chess puzzle-based CAPTCHA system.[14][15]

Users can also play games against the Stockfish chess engine at a number of difficulty levels.[16] They may also analyze specific positions from standard chess or any of the supported chess variants. The website implements a version of the Stockfish engine that runs on the user's local machine within the user's web browser for limited or infinite analysis,[17] which will calculate best lines of play or major opponent threats. An opening books based on games played on the site or a database of two million games played by FIDE titled players is available.[18] In Antichess variant, users can switch for Mark Watkins's antichess solution database.[19]

For registered players, Lichess employs a rating system, and grants the ability to compete in 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, Blitz or Classical, depending on the game's total time or estimated total time (if using Fischer time control which increments time after each move).[citation needed]

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. Where it differs from other online chess tournaments is they are run in an arena format where a member can join and leave at any time, and their score is retained if they rejoin during the tournament. In order to join a tournament, there is a requirement for the user to have played a sufficient number of games (in the same time control or the same variant).[20]

A Lichess mobile app is available for iOS and Android.[21]

History[edit]

Lichess was founded by Thibault Duplessis, a French programmer. The software running Lichess and the design are open source under the AGPL license.[22]

As of 26 October 2017, lichess.org had a global rank of 2,576 at Alexa, with most of its visitors coming from the United States, Germany, Russia, United Kingdom, and Iran.[23] Lichess is ranked second only to Chess.com as one of the most popular online chess servers in the world.[24][unreliable source?]

On February 11, 2015, an official Lichess mobile app was released for Android devices.[25] An app for mobile devices running iOS was released on March 4, 2015.[26]

Financials[edit]

Being ad-free, Lichess relies on donated money to maintain over a dozen servers with over a hundred processor cores while paying programmers.[27]

See also[edit]

  • List of Internet chess servers
  • Stockfish (chess)
  • Outline of chess (subject-wide table of contents)
  • Glossary of chess
  • Index of chess articles

References[edit]

  1. Patkar, Mihir (31 July 2015). "10 Free Two Player Games You Can Play In Your Browser". MakeUseOf. Retrieved 14 August 2015.
  2. Duplessis, Thibault (2014-08-05). "How old is lichess?". lichess.org. Retrieved 14 August 2015.
  3. Duplessis, Thibault. "README". GitHub. Retrieved 14 August 2015.
  4. "How do you pronounce Lichess?". lichess.org. Retrieved 2016-12-26.
  5. "Why is lichess free?". lichess.org. Retrieved Jul 2, 2014.
  6. "Lichess Features". lichess.org. Retrieved 5 December 2016.
  7. "Become a Patron of lichess.org". Lichess. Retrieved 22 November 2017. 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!
  8. Wilde, Tyler (2017). "The best chess games on PC". PC Gamer. Retrieved 20 November 2017.
  9. "Play chess for free". Liverpool Daily Post. Liverpool, UK. December 11, 2010. Retrieved 20 November 2017.
  10. "Lichess embraces blind players with new chess site features". slashgear.com. Retrieved 7 August 2016.
  11. "Lichess variants • lichess.org". lichess.org. Retrieved 2017-05-31.
  12. "OMG Crazyhouse!". lichess.org. Retrieved 2016-01-25.
  13. Torres, JC (23 June 2014). "Lichess embraces blind players with new chess site features". Slashgear. Retrieved 14 August 2015.
  14. Leyden, John (14 March 2013). "We shall CRUSH you, puny ROBOT... with CHESS". The Register. Retrieved 20 August 2015.
  15. Araújo, Santi (2017). "Captcha de ajedrez: la mejor jugada contra los bots". Genbeta (in Spanish). Retrieved 20 November 2017.CS1 maint: Unrecognized language (link)
  16. "Сайт дня: Lichess.org - чёрное и белое онлайн". ferra.ru (in Russian). 2014. Retrieved 20 November 2017.CS1 maint: Unrecognized language (link)
  17. "Recent Improvements". lichess.org. Retrieved Feb 2, 2017.
  18. "Opening Explorer". lichess.org. Retrieved Feb 26, 2016.
  19. Watkins, Mark. "Losing Chess: 1. e3 wins for White" (PDF). Retrieved 17 January 2017.
  20. https://lichess.org/qa/1752/whats-a-berserk-game
  21. "Mobile • lichess.org". Retrieved 5 June 2017.
  22. Duplessis, Thibault. "LICENSE". GitHub. Retrieved 25 October 2016.
  23. "lichess.org Site Overview". Alexa Internet. Retrieved 7 August 2017.
  24. "Chess Links and Websites". Retrieved 25 April 2016.
  25. "Android apps in Google Play". Retrieved 21 February 2016.
  26. "lichess - Free Online Chess in the App Store". Retrieved 21 February 2016.
  27. "Lichess detailed cost breakdown official spreadsheet". docs.google.com.

External links[edit]

Leaderboards[edit]

Development[edit]

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