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Copying Lila

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) 2012-2017 the lila authors.

For a list of the authors see the commit log or

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.

Additional permission under GNU AGPL version 3 section 7

If you modify this Program, or any covered work, by linking or combining it with Highcharts (or a modified version of that library), containing parts covered by the terms of the Creative Commons (CC) Attribution-NonCommercial licence, the licensors of this Program grant you additional permission to convey the resulting work. Corresponding Source for a non-source form of such a combination shall include the source code for the parts of Highcharts used as well as that of the covered work.

Exceptions (free)

Files Author(s) License
public/font70 Dave Gandy, GitHub, Webalys, Zurb, Daniel Bruce, Shapemade, Sergey Shmidt and the lichess authors OFL, MIT, CC BY 3.0, AGPLv3+
ChessSansPiratf in public/fonts the pgn4web authors GPLv2+
public/images/staunton James Clarke MIT
public/images/staunton/piece/CubesAndPi CubesAndPi AGPLv3+
public/images/trophy James Clarke MIT
public/images/flags Go Squared Ltd. MIT
public/images/boards the lila authors and pirouetti AGPLv3+
public/images/learn/pieces Thibault Duplessis and Colin M.L. Burnett GPLv2+
public/piece/mono Thibault Duplessis and Colin M.L. Burnett GPLv2+
public/piece/cburnett Colin M.L. Burnett GPLv2+
public/piece/chessnut Alexis Luengas Apache 2.0
public/piece/letter usolando AGPLv3+
public/piece/pirouetti pirouetti AGPLv3+
public/piece/merida Armando Hernandez Marroquin GPLv2+
public/piece/shapes flugsio CC BY-SA 4.0
public/sounds/futuristic Enigmahack AGPLv3+
public/sounds/nes Enigmahack AGPLv3+
public/sounds/piano Enigmahack AGPLv3+
public/sounds/sfx Enigmahack AGPLv3+

Exceptions (non-free)

Files Author(s) License
public/piece/alpha Eric Bentzen "free for personal non commercial use" (see zip)
public/piece/chess7 Style-7 "freeware"
public/piece/companion David L. Brown "freeware"
public/piece/fantasy Maurizio Monge "give credit in a suitable way"
public/piece/leipzig Armando Hernandez Marroquin "freeware"
public/piece/spatial Maurizio Monge "give credit in a suitable way"
public/piece/reillycraig Reilly Craig
public/piece/other Twitch
public/images/staunton/piece/Staunton Eden Murs (?)
  • The other sounds in public/sound.
  • The other artwork in public/images.
  • The icon font in public/font70.

External services

Lichess as deployed on also uses these external services:

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