647 lines
19 KiB
Markdown
647 lines
19 KiB
Markdown
[lichess.org](https://lichess.org) [![Build Status](https://travis-ci.org/ornicar/lila.svg?branch=master)](https://travis-ci.org/ornicar/lila)
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---------------------------------
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[@lichessorg](https://twitter.com/lichessorg)
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<img src="https://raw.githubusercontent.com/ornicar/lila/master/public/images/homepage_light.1200.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://lichess.org/translation/contribute) 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 codebase 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 of donated servers.
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It uses [MongoDB 3.4](https://mongodb.org) to store more than 400 million games, which are indexed by [elasticsearch](http://elasticsearch.org).
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HTTP requests and websocket connections are proxied by [nginx 1.8](http://nginx.org).
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Client-side is written in [mithril.js](http://mithril.js.org/).
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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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Browser testing done with [![](https://raw.githubusercontent.com/ornicar/lila/master/public/images/browserstack.png)](https://www.browserstack.com).
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[Join us on discord](https://discord.gg/AWSze7n) 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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> If you want to add a live chess section to your website, you are welcome to [embed lichess](https://lichess.org/developers) into your website. It's very easy to do.
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> This project source code is open for other developers to have an example of non-trivial scala/play2/mongodb application. You're welcome to reuse as much code as you want for your projects and to get inspired by the solutions I propose to many common web development problems. But please don't just create a public lichess clone. Instead, [embed lichess using an <iframe>](https://lichess.org/developers) into your website.
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> Also note that if I provide the source code, I do **not** offer support for your lichess instance. I will probably ignore any question about lichess installation and runtime issues.
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## HTTP API
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Feel free to use lichess API in your applications and websites.
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If the resource you need is not available yet,
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drop us an email at contact@lichess.org and we'll discuss it.
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### API Limits
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To respect the API servers and avoid an IP ban, please wait 1 second between requests.
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If you receive an HTTP response with a [429 status](https://en.wikipedia.org/wiki/List_of_HTTP_status_codes#429), please wait a full minute before resuming API usage.
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Please do not automate computer analysis requests. They're very expensive.
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### `GET /api/user/<username>` fetch one user
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```
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> curl https://en.lichess.org/api/user/thibault
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```
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```javascript
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{
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"username": "thibault",
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"title": null, // chess title like FM or LM (lichess master)
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"url": "https://lichess.org/@/thibault", // profile url
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"online": true, // is the player currently using lichess?
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"playing": "https://lichess.org/abcdefgh", // game being played, if any
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"engine": false, // true if the user is known to use a chess engine
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"language": "en", // prefered language
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"profile": {
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"bio": "Writes bugs for free",
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"country": "FR",
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"firstName": "Thibault",
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"lastName": "Duplessis",
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"location": "Paris"
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},
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"perfs": { // user performances in different games
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"bullet": {
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"games": 35, // number of rated games played
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"rating": 1624, // Glicko2 rating
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"rd": 80, // Glicko2 rating deviation
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"prog": -13 // progress over the last twelve games
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},
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"chess960": {
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"games": 1,
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"rating": 1739,
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"rd": 277,
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"prog": 33
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},
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"classical": {
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"games": 331,
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"rating": 1603,
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"rd": 65,
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"prog": 9
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},
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"kingOfTheHill": {
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"games": 3,
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"rating": 1622,
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"rd": 223,
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"prog": -62
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},
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"puzzle": {
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"games": 9,
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"rating": 902,
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"rd": 117,
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"prog": -328
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},
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"threeCheck": {
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"games": 1,
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"rating": 1662,
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"rd": 290
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}
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}
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}
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```
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Example usage with JSONP:
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```javascript
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$.ajax({
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url:'https://en.lichess.org/api/user/thibault',
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dataType:'jsonp',
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jsonp:'callback',
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success: function(data) {
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// data is a javascript object, do something with it!
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console.debug(JSON.stringify(data));
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}
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});
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```
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### `GET /api/user` fetch many users from a team
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```
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> curl https://en.lichess.org/api/user?team=coders&nb=10&page=1
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```
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The team parameter is mandatory.
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name | type | default | description
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--- | --- | --- | ---
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**team** | string | - | filter users by team
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**nb** | int | 10 | maximum number of users to return per page
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**page** | int | 1 | for pagination
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```javascript
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{
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"currentPage": 3,
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"previousPage": 2,
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"nextPage": 4,
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"maxPerPage": 100,
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"nbPages": 43,
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"nbResults": 4348,
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"currentPageResults": [
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{
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... // see user document above
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},
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... // other users
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]
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}
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```
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Example usage with JSONP:
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```javascript
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$.ajax({
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url:'https://en.lichess.org/api/user',
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data: {
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team: 'coders',
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nb: 100
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},
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dataType:'jsonp',
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jsonp:'callback',
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success: function(data) {
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// data is a javascript object, do something with it!
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console.debug(JSON.stringify(data.list));
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}
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});
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```
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### `POST /api/users` fetch many users by ID
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```
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> curl --data "legend,lovlas" 'https://en.lichess.org/api/users'
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```
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Users are returned in the order same order as the ids.
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### `GET /api/users/status` fetch many users `online` and `playing` flags
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```
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> curl -s 'https://en.lichess.org/api/users/status?ids=thibault,chess-network'
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```
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name | type | default | description
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--- | --- | --- | ---
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**ids** | string | - | user ids separated by commas. Max 40 user ids.
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```javascript
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[
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{
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"id": "thibault",
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"name": "thibault",
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"patron": true,
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"online": true,
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"playing": true
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},
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{
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"id": "chess-network",
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"name": "Chess-Network",
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"title": "NM",
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"patron": true,
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"online": false,
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"playing": false
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}
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]
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```
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### `GET /api/user/<username>/games` fetch user games
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```
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> curl https://en.lichess.org/api/user/thibault/games?nb=10&page=2
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```
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Games are returned by descendant chronological order.
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All parameters are optional.
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name | type | default | description
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--- | --- | --- | ---
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**nb** | int | 10 | maximum number of games to return per page
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**page** | int | 1 | for pagination
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**with_analysis** | 1 or 0 | 0 | include deep analysis data in the result
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**with_moves** | 1 or 0 | 0 | include a list of PGN moves
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**with_opening** | 1 or 0 | 0 | include opening informations
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**with_movetimes** | 1 or 0 | 0 | include move time informations
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**rated** | 1 or 0 | - | rated games only
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**playing** | 1 or 0 | - | games in progress only
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```javascript
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{
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"currentPage": 3,
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"previousPage": 2,
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"nextPage": 4,
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"maxPerPage": 100,
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"nbPages": 43,
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"nbResults": 4348,
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"currentPageResults": [
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{
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"id": "39b12Ikl",
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"variant": "chess960", // standard/chess960/fromPosition/kingOfTheHill/threeCheck
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"speed": "blitz", // bullet|blitz|classical|unlimited
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"perf": "chess960", // bullet|blitz|classical|chess960|kingOfTheHill|threeCheck
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"rated": true,
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"status": "mate", // (1)
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"clock":{ // all clock values are expressed in seconds
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"initial": 300,
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"increment": 8,
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"totalTime": 620 // evaluation of the game duration = initial + 40 * increment
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},
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"createdAt": 1389100907239,
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"lastMoveAt": 1389100907239,
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"turns": 44,
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"color": "white", // color who plays next
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"url": "https://lichess.org/x2kpaixn",
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"winner": "black",
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"players": {
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"white": {
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"userId": "thibault",
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"name": "Thibault D", // only in the case of imported game
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"rating": 1642,
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"analysis": {
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"blunder": 1,
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"inaccuracy": 0,
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"mistake": 2
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},
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// rounded move times in tenths of seconds
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"moveTimes":[30,40,10,40,40,100,50,200,400,150,150,40,50,200,80]
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},
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"black": ... // other player
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}
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"analysis": [ // only if the with_analysis flag is set
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{
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"eval": -26, // board evaluation in centipawns
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"move": "e4"
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},
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{
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"eval": -8,
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"move": "b5"
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},
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{
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"eval": -66,
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"move": "Nfe3",
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"variation": "c4 bxc4 Nfe3 c5 Qf1 f6 Rxc4 Bb7 b4 Ba6"
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},
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// ... more moves
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],
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"moves": "Nf3 d5 g3 e6 Bg2 Be7 d3 Nf6 Nbd2 O-O O-O c6 Rfe1 b6 e4 Bb7", // with_moves flag
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"opening": { // with_opening flag
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"code": "A07",
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"name": "King's Indian Attack, General"
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}
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},
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{
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... // other game
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}
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]
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}
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```
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(1) All game statuses: https://github.com/ornicar/scalachess/blob/master/src/main/scala/Status.scala#L16-L25
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### `GET /api/games/vs/<username>/<username>` fetch games between 2 users
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```
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> curl https://en.lichess.org/api/games/vs/thibault/legend?nb=10&page=2
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```
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Parameters and result are similar to the users games API.
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### `GET /api/games/team/<teamId>` fetch games between players of a team
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```
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> curl https://en.lichess.org/api/games/team/freenode?nb=10&page=2
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```
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Parameters and result are similar to the users games API.
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### `GET /api/game/{id}` fetch one game by ID
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```
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> curl https://en.lichess.org/api/game/x2kpaixn
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```
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A single game is returned.
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All parameters are optional.
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name | type | default | description
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--- | --- | --- | ---
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**with_analysis** | 1 or 0 | 0 | include deep analysis data in the result
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**with_moves** | 1 or 0 | 0 | include a list of PGN moves
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**with_movetimes** | 1 or 0 | 0 | include move time informations
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**with_opening** | 1 or 0 | 0 | include opening informations
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**with_fens** | 1 or 0 | 0 | include a list of FEN states
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```javascript
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{
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"id": "39b12Ikl",
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"initialFen": "rkrqnnbb/pppppppp/8/8/8/8/PPPPPPPP/RKRQNNBB w KQkq - 0 1" // omitted is standard
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"variant": "chess960", // standard/chess960/fromPosition/kingofthehill/threeCheck
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"speed": "blitz", // bullet|blitz|classical|unlimited
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"perf": "chess960", // bullet|blitz|classical|chess960|kingOfTheHill|threeCheck
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"rated": true,
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"status": "mate", // (1)
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"clock":{ // all clock values are expressed in seconds
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"initial": 300,
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"increment": 8,
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"totalTime": 620 // evaluation of the game duration = initial + 40 * increment
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},
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"createdAt": 1389100907239,
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"lastMoveAt": 1389100907239,
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"turns": 44,
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"color": "white", // color who plays next
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"url": "https://lichess.org/x2kpaixn",
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"winner": "black",
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"players": {
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"white": {
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"userId": "thibault",
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"name": "Thibault D", // only in the case of imported game
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"rating": 1642,
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"analysis": {
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"blunder": 1,
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"inaccuracy": 0,
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"mistake": 2
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},
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// rounded move times in tenths of seconds
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"moveTimes":[30,40,10,40,40,100,50,200,400,150,150,40,50,200,80]
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},
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"black": ... // other player
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},
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"analysis": [ // only if the with_analysis flag is set
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{
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"eval": -26, // board evaluation in centipawns
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"move": "e4"
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},
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{
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"eval": -8,
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"move": "b5"
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},
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{
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"eval": -66,
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"move": "Nfe3",
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"variation": "c4 bxc4 Nfe3 c5 Qf1 f6 Rxc4 Bb7 b4 Ba6"
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},
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// ... more moves
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],
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"moves": "Nf3 d5 g3 e6 Bg2 Be7 d3 Nf6 Nbd2 O-O O-O c6 Rfe1 b6 e4 Bb7", // with_moves flag
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"opening": { // with_opening flag
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"code": "A07",
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"name": "King's Indian Attack, General"
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}
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"fens": [ // only if with_fens flag is set
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"rnbqkbnr/pppppppp/8/8/8/5N2/PPPPPPPP/RNBQKB1R",
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"rnbqkbnr/ppp1pppp/8/3p4/8/5N2/PPPPPPPP/RNBQKB1R",
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"rnbqkbnr/ppp1pppp/8/3p4/8/5NP1/PPPPPP1P/RNBQKB1R",
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"rnbqkbnr/ppp2ppp/4p3/3p4/8/5NP1/PPPPPP1P/RNBQKB1R",
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"rnbqkbnr/ppp2ppp/4p3/3p4/8/5NP1/PPPPPPBP/RNBQK2R",
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"rnbqk1nr/ppp1bppp/4p3/3p4/8/5NP1/PPPPPPBP/RNBQK2R",
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// ... more fens
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]
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}
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```
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(1) All game statuses: https://github.com/ornicar/scalachess/blob/master/src/main/scala/Status.scala#L16-L25
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### `POST /api/games` fetch many games by ID
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```
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> curl --data "x2kpaixn,gtSLJGOK" 'https://en.lichess.org/api/games'
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```
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Games are returned in the order same order as the ids.
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All parameters are optional.
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name | type | default | description
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--- | --- | --- | ---
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**with_moves** | 1 or 0 | 0 | include a list of PGN moves
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### `GET /game/export/{id}.pgn` fetch one game PGN by ID
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https://en.lichess.org/game/export/Qa7FJNk2.pgn
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This returns the raw PGN for a game.
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```
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[Event "Rated game"]
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[Site "https://lichess.org/Qa7FJNk2"]
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[Date "2014.06.12"]
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[White "onpurplesz"]
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[Black "LauraSchmidt"]
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[Result "1-0"]
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[WhiteElo "1516"]
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[BlackElo "1698"]
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[PlyCount "37"]
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[Variant "Standard"]
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[TimeControl "1020+0"]
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[ECO "C50"]
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[Opening "Italian Game, General"]
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[WhiteClock ":11:9"]
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[BlackClock ":14:6"]
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[Annotator "lichess.org"]
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1. e4 e5 2. Nf3 Nc6 3. Bc4 { Italian Game, General } Qf6?! { (0.13 → 0.98) Inaccuracy. Best move was Nf6. } (3... Nf6 4. d3 Bc5 5. O-O O-O 6. Bg5 Be7 7. a3 d6 8. h3 a6) 4. d3 h6 5. Be3 d6 6. h3?! { (0.84 → 0.31) Inaccuracy. The best move was Nc3. } (6. Nc3 Be6 7. Nd5 Qd8 8. d4 exd4 9. Nxd4 Nxd4 10. Qxd4 c6 11. Nc3 Bxc4 12. Qxc4 Nf6 13. O-O Be7) 6... a6 7. Nbd2 Be6 8. Qe2 Bxc4 9. Nxc4 Nge7 10. a3 Nd4?! { (0.29 → 0.79) Inaccuracy. The best move was O-O-O. } (10... O-O-O 11. O-O g5 12. a4 Bg7 13. Bd2 Kb8 14. Rae1 Qe6 15. b4 f5 16. b5 fxe4) 11. Bxd4 exd4 12. O-O-O Nc6 13. Rhe1 O-O-O 14. e5 dxe5 15. Nfxe5 Nxe5 16. Qxe5 Qxe5? { (0.35 → 1.78) Mistake. The best move was Qxf2. } (16... Qxf2 17. Re2 Qf6 18. Qxf6 gxf6 19. Rf1 Bg7 20. Nd2 h5 21. Ne4 Rhe8 22. Ref2 Re5 23. b3 Rdd5 24. Kb2) 17. Nxe5 Rg8?! { (1.76 → 2.32) Inaccuracy. The best move was Rd7. } (17... Rd7 18. Nxd7 Kxd7 19. Re4 c5 20. c3 dxc3 21. bxc3 Bd6 22. Kc2 b5 23. a4 Ra8 24. d4 Kc6 25. dxc5) 18. Nxf7 Rd7? { (2.35 → Mate in 2) Checkmate is now unavoidable. The best move was Rd5. } (18... Rd5 19. Re8+ Kd7 20. Rde1 Bb4 21. Rxg8 Bxe1 22. Rxg7 Bxf2 23. Nxh6+ Kc6 24. Kd1 Rb5 25. b3 Rh5 26. Nf7) 19. Re8+ { Black resigns } 1-0
|
|
```
|
|
|
|
### `GET /api/tournament` fetch current tournaments
|
|
|
|
Returns tournaments displayed on the schedule: https://lichess.org/tournament
|
|
|
|
```
|
|
> curl https://en.lichess.org/api/tournament
|
|
```
|
|
|
|
```javascript
|
|
{
|
|
"created": [
|
|
{
|
|
"id": "f4wnl48m",
|
|
"createdBy": "thedave13213",
|
|
"system": "arena",
|
|
"minutes": 45,
|
|
"clock": {
|
|
"limit": 120,
|
|
"increment": 0
|
|
},
|
|
"position": null,
|
|
"rated": true,
|
|
"fullName": "Ulrich Arena",
|
|
"nbPlayers": 1,
|
|
"private": false,
|
|
"variant": {
|
|
"key": "standard",
|
|
"short": "Std",
|
|
"name": "Standard"
|
|
},
|
|
"secondsToStart": 38,
|
|
"startsAt": 1471257146633,
|
|
"finishesAt": 1471259846633,
|
|
"status": 10,
|
|
"schedule": null,
|
|
"winner": null,
|
|
"conditions": null,
|
|
"perf": {
|
|
"icon": "T",
|
|
"name": "Bullet",
|
|
"position": 0
|
|
}
|
|
}
|
|
],
|
|
"started": [
|
|
...
|
|
],
|
|
"finished": [
|
|
...
|
|
]
|
|
}
|
|
```
|
|
|
|
JSONP is available.
|
|
|
|
### `GET /api/tournament/<tournamentId>` fetch one tournament
|
|
|
|
Returns tournament info, and a page of the tournament standing
|
|
|
|
name | type | default | description
|
|
--- | --- | --- | ---
|
|
**page** | int | 1 | for standing pagination
|
|
|
|
```
|
|
curl 'https://en.lichess.org/api/tournament/x5WNIngd?page=1'
|
|
```
|
|
|
|
```javascript
|
|
{
|
|
"clock": {
|
|
"increment": 0,
|
|
"limit": 300
|
|
},
|
|
"createdBy": "lichess",
|
|
"fullName": "Hourly Blitz Arena",
|
|
"id": "x5WNIngd",
|
|
"isFinished": true,
|
|
"isStarted": false,
|
|
"minutes": 56,
|
|
"nbPlayers": 128,
|
|
"next": {
|
|
"finishesAt": null,
|
|
"id": "dNivtcYG",
|
|
"name": "Hourly SuperBlitz Arena",
|
|
"nbPlayers": 0,
|
|
"perf": {
|
|
"icon": ")",
|
|
"name": "Blitz"
|
|
},
|
|
"startsAt": "2016-08-15T11:00:00.000Z"
|
|
},
|
|
"startsAt": "2016-05-25T22:00:00.000Z",
|
|
"system": "arena",
|
|
"variant": "standard",
|
|
"verdicts": {
|
|
"accepted": true,
|
|
"list": []
|
|
}
|
|
"pairings": [
|
|
{
|
|
"id": "gtFxbHU8",
|
|
"s": 3,
|
|
"u": ["nimsraw", "Ernom"]
|
|
},
|
|
{
|
|
"id": "oyl3n1bB",
|
|
"s": 3,
|
|
"u": ["esparzaesc72", "athletics_champ"]
|
|
},
|
|
...
|
|
],
|
|
"perf": {
|
|
"icon": ")",
|
|
"name": "Blitz"
|
|
},
|
|
"podium": [
|
|
{
|
|
"name": "athletics_champ",
|
|
"nb": {
|
|
"berserk": 0,
|
|
"game": 7,
|
|
"win": 7
|
|
},
|
|
"performance": 2297,
|
|
"rank": 1,
|
|
"rating": 2100,
|
|
"ratingDiff": 37,
|
|
"score": 24,
|
|
"sheet": {
|
|
"fire": true,
|
|
"scores": [
|
|
[2, 2],
|
|
...
|
|
]
|
|
},
|
|
...
|
|
],
|
|
"schedule": {
|
|
"freq": "hourly",
|
|
"speed": "blitz"
|
|
},
|
|
"standing": {
|
|
"page": 1,
|
|
"players": [
|
|
{
|
|
"name": "athletics_champ",
|
|
"rank": 1,
|
|
"rating": 2100,
|
|
"ratingDiff": 37,
|
|
"score": 24,
|
|
"sheet": {
|
|
"fire": true,
|
|
"scores": [
|
|
[2, 2 ],
|
|
...
|
|
]
|
|
}
|
|
},
|
|
...
|
|
]
|
|
}
|
|
}
|
|
```
|
|
|
|
JSONP is available.
|
|
|
|
Credits
|
|
-------
|
|
|
|
See the [lichess Thanks page](https://lichess.org/thanks)
|
|
|
|
Supported browsers
|
|
------------------
|
|
|
|
- [Chrome](https://www.google.com/chrome) or [Chromium](https://www.chromium.org/getting-involved/download-chromium), 1 year old or newer (fastest local analysis!)
|
|
- [Firefox](https://www.mozilla.org/firefox), 1 year old or newer (second fastest local analysis!)
|
|
- Opera 34 and newer (meh)
|
|
- Safari 9 and newer (boo)
|
|
- Microsoft Edge (yuck)
|
|
- Internet Explorer 11 (eew)
|
|
|
|
Older browsers will not work. For your own sake, please upgrade.
|
|
Security and performance, think about it!
|
|
|
|
Licence
|
|
-------
|
|
|
|
Lila is licensed under the GNU Affero General Public License 3 or any later
|
|
version at your choice with an exception for Highcharts. See COPYING for
|
|
details.
|