75 lines
4.0 KiB
Markdown
75 lines
4.0 KiB
Markdown
[lichess.org](https://lichess.org)
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==================================
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[](https://travis-ci.org/ornicar/lila)
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[](https://crowdin.com/project/lichess)
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[](https://twitter.com/lichess)
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<img src="https://raw.githubusercontent.com/ornicar/lila/master/public/images/home-bicolor.png" alt="lichess.org" />
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Lila (li[chess in sca]la) is a free online chess game server focused on [realtime](https://lichess.org/games) gameplay and ease of use.
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It features a [search engine](https://lichess.org/games/search),
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[computer analysis](https://lichess.org/ief49lif) distributed with [fishnet](https://github.com/niklasf/fishnet),
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[tournaments](https://lichess.org/tournament),
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[simuls](https://lichess.org/simul),
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[forums](https://lichess.org/forum),
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[teams](https://lichess.org/team),
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[tactic trainer](https://lichess.org/training),
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a [mobile app](https://lichess.org/mobile),
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and a [shared analysis board](https://lichess.org/study).
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The UI is available in more than [80 languages](https://crowdin.com/project/lichess) thanks to the community.
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Lichess is written in [Scala 2.11](https://www.scala-lang.org/),
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and relies on [Play 2.4](https://www.playframework.com/) for the routing, templating, and JSON.
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Pure chess logic is contained in [scalachess](https://github.com/ornicar/scalachess) submodule.
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The server is fully asynchronous, making heavy use of Scala Futures and [Akka 2 actors](http://akka.io).
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Lichess talks to [Stockfish](http://stockfishchess.org/) deployed in an [AI cluster](https://github.com/niklasf/fishnet) of donated servers.
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It uses [MongoDB](https://mongodb.org) to store more than 800 million games, which are indexed by [elasticsearch](http://elasticsearch.org).
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HTTP requests and websocket connections are proxied by [nginx](http://nginx.org).
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The web client is written in [TypeScript](https://typescriptlang.org) and [snabbdom](https://github.com/snabbdom/snabbdom).
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The [blog](https://lichess.org/blog) uses a free open content plan from [prismic.io](https://prismic.io).
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All rated games are published in a [free PGN database](https://database.lichess.org).
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Browser testing done with [](https://www.browserstack.com).
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Please help us [translate lichess with Crowdin](https://crowdin.com/project/lichess).
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[Join us on discord](https://discord.gg/hy5jqSs) or in the #lichess freenode IRC channel for more info.
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Use [GitHub issues](https://github.com/ornicar/lila/issues) for bug reports and feature requests.
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Installation
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------------
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The Wiki describes [how to setup a development environment](https://github.com/ornicar/lila/wiki/Lichess-Development-Onboarding).
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The source code is available for learning and contribution, but please don't just setup a public Lichess clone. Don't expect developers to help you run your own instance. Questions about the installation and runtime issues will probably be ignored.
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HTTP API
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--------
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Feel free to use [lichess API](https://lichess.org/api) in your applications and websites.
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Credits
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-------
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See the [contributors](https://github.com/ornicar/lila/graphs/contributors) on this repository and [lichess.org/thanks](https://lichess.org/thanks).
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Supported browsers
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------------------
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- [Chrome](https://www.google.com/chrome) or [Chromium](https://www.chromium.org/getting-involved/download-chromium), 1 year old or newer (fastest local analysis!)
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- [Firefox](https://www.mozilla.org/firefox), 1 year old or newer (second fastest local analysis!)
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- Opera 34 and newer (meh)
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- Safari 9 and newer (boo)
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- Microsoft Edge (yuck)
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- Internet Explorer 11 (eew)
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Older browsers will not work. For your own sake, please upgrade.
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Security and performance, think about it!
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License
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-------
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Lila is licensed under the GNU Affero General Public License 3 or any later
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version at your choice with an exception for Highcharts. See COPYING for
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details.
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