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Terms of Service

These Terms of Service (Terms) govern your access to and use of our services, including our various websites, email notifications, applications, blogs, and other services which link to these terms. These terms also govern any information, text, links, graphics, photos or other material uploaded, or appearing on the Services offered, referred hereafter as (Content). By using the services you agree to be bound by these Terms.

Introduction hereafter (Lichess) can be considered a digital version of an analogue chess club. Users of the site are encouraged to use our services and content to develop their understanding of chess and to further the pursuit of chess.

Lichess is open source and run by volunteers. Occasional downtime may occur which may affect Lichess' services on offer. Lichess takes no liability for negative effects of downtime.


Lichess is designed to be open to all who are willing to agree to form a binding contract with Lichess and are able to receive services under the laws of the applicable jurisdiction. Users must be at least 13 years old to use the Services. If you accept these Terms on behalf of a company, organization government, or other legal entity, you represent and warrant that you are authorized to do so. Lichess withholds the right to request proof of identity from those claiming to hold representation from the above entities in addition to players claiming certain titles or public or notable identities.

User conduct and fair play

Users, both registered and unregistered, agree to behave with good conduct whilst benefitting from Lichess' services. Certain behavior will result in action being taken against the account including banning or closing the account.

  1. Cheating is defined as using anything, other than your own knowledge, that gives you an advantage when playing against another user. This includes using computer engines, written chess materials, opening books, or endgame tablebases during a live game. Having another player give you advice on what to play will also be considered cheating. Exceptions are where the user is playing against the Stockfish engine or against another player in a casual game with the opponent's consent. Lichess maintains the right to change these definitions as they see fit and to apply bans following the judgment of the administration team.
  2. Artificially boosting your own or another user's rating is considered cheating, and users involved will be banned at the administrators' discretion.
  3. Sandbagging your rating to pretend to be at an ability below your actual rating is considered cheating and users involved will be banned at the administrators' discretion.
  4. Harassing other users is against the terms and illegal. Serious offenders will be reported to the relevant authorities.
  5. Breaking into another user's account or stealing their account is against the terms and illegal. Offenders will be reported to the relevant authorities.
  6. Impersonation of someone you are not is against the terms. Pseudonyms are allowed but these may not be used to impersonate someone. Administrators may close accounts at their discretion.
  7. Users must use the services available on Lichess reasonably. This is at the administrators' discretion.
  8. Users are responsible for the links and materials they upload or otherwise post on Lichess. Inappropriate content will be removed. The user is responsible for any content they provide including compliance with particular laws.

User conduct is contextual, and different penalties may apply at the administrators' discretion. What determines good conduct may change at Lichess' discretion.

Exceptionally, users can play as a team. This must be done on a specially made team account, which explicitly states the team nature of the account (for example, in the bio page). This is primarily intended for entertainment or educational purposes, and administrators retain final say as to whether an account is a legitimate team account or not. Some examples of team accounts could be: entertainment use in streamed bullet tournaments where effective consultation is impossible; custom tournaments created by the team account; in private challenges and lobby games where the opponent explicitly consents.

The administrators' discretion is final.


Our privacy policy describes how we handle the information you provide to us when you use our services. You understand that through your use of the services you consent to the collection and use, as set out in the privacy policy, of this information. Lichess currently follows European Data Protection legislation and is actively making changes to its data protection processes to follow the General Data Protection Regulation.


Lichess is licensed under the GNU AGPL license.

Lichess respects the intellectual property rights of others and expects users of the services to do the same. Lichess reserves the right to remove content alleged to be infringing without prior notice at our sole discretion and without liability to you. We will respond to notices of alleged copyright infringement, that comply with applicable law and are properly provided to us, as described in our copyright policy. If you believe your content has been copied in a way that constitutes copyright infringement please alert us by contacting us at

You retain your rights to any content you submit, post or create through the services including chess games. By submitting, posting or displaying content on or through our services, you grant us a global, non-exclusive, royalty-free license, with the right to sublicense, to use, copy, reproduce, process, adapt, modify, publish, transmit, display and distribute such content in any and all media or distribution channels in accordance with the AGPL license. Such additional uses may be made without compensation paid to you with respect to the content you make available through the services. This does not remove your rights from other 3rd party sites, such as Twitch or YouTube.


Users are free to donate to Lichess as a French Charitable Association. Lichess will receive all funds donated except where there are third party transaction fees. Donation is a gift to Lichess, and is not an investment, a loan, or imply any additional transfer of services other than a small visual aesthetic. Donations made fraudulently, in bank error or double transferred may be returned back to the donor's account or bank card which made the donation if requested before 14 days.

Limitation of liability

Services made available are on an as is and as available basis. Lichess disclaims all warranties and conditions, whether express or implied, of merchantability, fitness for a particular purpose or non-infringement. Lichess makes no warranty or representation and disclaims all responsibility and liability for the completeness, availability, timeliness, accuracy and security of the content and services, nor for harm or loss of any data to your computer system, the deletion of or failure to store or transmit communications or content maintained by the services or whether the services will meet your requirements or be available on an uninterrupted, secure or error-free basis. Lichess cannot be held responsible for any loss, financial or otherwise, from third party sources, including misrepresentations, negligence or fraud.

No advice, information or written correspondence whether oral or written procured from Lichess entities or through Lichess services will create any warranty or representation not expressly made herein.


We may revise these Terms from time to time. The changes may in some limited circumstances be retroactive. We will try to notify you on significant revisions via a service notification or an email to the account associated with your account. By continuing to use the services after these revisions, you agree to accept the changing terms of the service. You agree to accept the law and jurisdiction of England and Wales by using our services.

In the event any provision of these terms is held to be invalid or unenforceable, then that provision will be limited to the minimum enforcement possible, and the remaining terms held with full effect.

These terms are an agreement between you and Lichess.


Lichess on the domain, and the official mobile application, will never knowingly host adverts. Lichess is not responsible for third party adverts, widgets and apps hosted by the service providers on its social media.

Premium accounts

Lichess will never create premium accounts.