Copying Lila

May 20, 2026 · View on GitHub

Any file in this project that does not state otherwise and is not listed as an exception below is part of lila and copyright (c) 2012-2026 the lila authors.

For a list of the authors see the commit log or https://github.com/lichess-org/lila/graphs/contributors.

Lila is free software; you can redistribute and/or modify it under the terms of the GNU Affero General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version.

Lila is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more details.

See the LICENSE file for a copy of the GNU Affero General Public License.

Exceptions (free)

FilesAuthor(s)License
public/font/lichess.{sfd,woff,woff2}Dave Gandy, GitHub, Webalys, Zurb, Daniel Bruce, Shapemade, Sergey Shmidt and the Lichess authorsOFL, MIT, CC BY 3.0, AGPLv3+
public/font/lichess.chess.{sfd,woff,woff2}the pgn4web authorsGPLv2+
Noto Sans in public/fontGoogleApache 2.0
Roboto in public/fontChristian RobertsonApache 2.0
Segment7 in public/fontCeddersSIL Open Font License
public/piece/horsey, public/images/emoji/horsey.webpcham, michael1241CC BY-NC-SA 4.0
public/images/stauntonJames ClarkeMIT
public/images/staunton/piece/CubesAndPiCubesAndPiAGPLv3+
public/images/trophyJames ClarkeMIT
public/flagsGo Squared Ltd.MIT
public/flags/ES-AN.pngMiguillenCC-BY-SA 4.0
public/flags/PT-30.pngBrian Boru, Nuno TavaresCC-BY-SA 1.0
public/images/boardthe lila authors and pirouettiAGPLv3+
public/images/learn/piecesThibault Duplessis and Colin M.L. BurnettGPLv2+
public/piece/monoThibault Duplessis and Colin M.L. BurnettGPLv2+
public/piece/cburnettColin M.L. BurnettGPLv2+
public/piece/chessnutAlexis LuengasApache 2.0
public/piece/letterusolandoAGPLv3+
public/piece/pirouettipirouettiAGPLv3+
public/piece/meridaArmando Hernandez MarroquinGPLv2+
public/piece/shapesflugsioCC BY-SA 4.0
public/piece/pixeltherealqtpiAGPLv3+
public/piece/rhosgfxRhosGFXCC0 1.0
public/piece/californiaJerry S.CC BY-NC-SA 4.0
public/piece/calienteaviCC BY-NC-SA 4.0
public/piece/maestrosadsnake1CC BY-NC-SA 4.0
public/piece/fantasyMaurizio MongeMIT
public/piece/spatialMaurizio MongeMIT
public/piece/celticMaurizio MongeMIT
public/piece/frescasadsnake1CC BY-NC-SA 4.0
public/piece/cardinalsadsnake1CC BY-NC-SA 4.0
public/piece/icpiecessadsnake1CC BY-NC-SA 4.0
public/piece/giocosadsnake1CC BY-NC-SA 4.0
public/piece/tatianasadsnake1CC BY-NC-SA 4.0
public/piece/stauntysadsnake1CC BY-NC-SA 4.0
public/piece/dubrovnysadsnake1CC BY-NC-SA 4.0
public/piece/anarcandycaderekCC BY-NC-SA 4.0
public/piece/disguiseddanegraphicsCC BY-NC-SA 4.0
public/piece/kiwen-suwineverRareCC BY 4.0
public/piece/mpchessMaxime ChupinGPL3v3+
public/piece/cookefejfarCC BY-NC-SA 4.0
public/piece/monarchyslither77CC BY-NC-SA 4.0
public/piece/xkcdRandall MunroeCC BY-NC-SA 2.5
public/piece/FiriJames FaureCC BY 4.0
public/sounds/futuristicEnigmahackAGPLv3+
public/sounds/nesEnigmahackAGPLv3+
public/sounds/pianoEnigmahackAGPLv3+
public/sounds/sfxEnigmahackAGPLv3+
public/sounds/lispEdinburghCollectiveCC BY-NC-SA 4.0
SVG in ui/learn/src/apple.tsSensaCC0 1.0
public/flair/img/symbols.neovim-mark.webpJason LongCC BY 3.0 (Modified by converting to webp and resizing)

public/images/practice/_ game-icons.net CC BY 3.0 public/images/puzzle-themes/_ game-icons.net CC BY 3.0 translation/source/puzzleTheme.xml | the lila authors and contributors | CC0 1.0

Exceptions (non-free)

FilesAuthor(s)License
public/logo, public/favicon.ico, public/apple-touch-icon.pngsadsnake1Only use to refer to lichess.org
public/piece/alphaEric Bentzen"free for personal non commercial use" (see zip)
public/piece/chess7Style-7"freeware"
public/piece/companionDavid L. Brown"freeware"
public/piece/leipzigArmando Hernandez Marroquin"freeware"
public/piece/reillycraigReilly Craig
public/piece/riohacha
public/images/staunton/piece/StauntonEden Murs (?)
public/piece/shahi-ivory-brownTamer KaratekinFree for personal and commercial use, but non-derivative non-modify license (Şahî Chess & Shatranj Font License v1.0 – https://github.com/TamerKaratekin/shahi-chess-shatranj-font/blob/main/LICENSE.txt)
public/piece/totoyKosal SenCC BY 4.0
  • The other sounds in public/sound
  • The other artwork in public/images

External services

Lichess as deployed on https://lichess.org/ also uses these external services: