Legal notice

1. Site owner

• Owner: Alberto Quintin Navarro
• Email: [email protected], the means of direct and effective communication with the owner.
• Activity: development and free distribution of the Luft desktop application and of this informational website. No economic activity: nothing is sold, there is no advertising, no donations are solicited and no paid service is provided. The owner is not listed in any commercial register nor subject to prior administrative authorisation.

2. Purpose

This site presents the Luft application, offers downloads for Windows and Linux, a chess games database and the notes for each release. Use of the application is governed by its licence agreement; the processing of personal data by the privacy policy.

3. Intellectual and industrial property

The design of this site, its texts, the logo and the Luft application are the owner’s work and are protected by intellectual property law. Viewing, downloading and printing the site’s contents for personal use is allowed; reproducing, distributing or transforming them for commercial purposes without permission is not.

“Luft” is the name used to identify the application. Its use does not imply that it is a registered trade mark.

4. Third-party software and resources

The Luft application uses open-source components credited in its “About” dialog. This site uses:

• The Inter typeface by Rasmus Andersson — SIL Open Font License 1.1.
• Icons from Font Awesome Free — CC BY 4.0 (brand icons) and Lucide — ISC licence. Windows is a trade mark of Microsoft Corporation. It is named, and its icon shown, solely to identify the download platform; there is no relationship with, sponsorship by or endorsement from Microsoft.

5. Games database

The downloadable reference database comes exclusively from the official Lichess broadcasts, released by Lichess.org under the Creative Commons Attribution-ShareAlike 4.0 International licence (CC BY-SA 4.0). It does not come from the general Lichess games dataset released under CC0.

The owner downloads the monthly dumps, removes duplicate games and converts the data from PGN to .luftdb; the contents of the games are not altered. The resulting database is redistributed under CC BY-SA 4.0, with credit to Lichess.org and without suggesting that Lichess sponsors or endorses Luft. Anyone who shares or adapts it must retain the attribution, indicate their own changes, link to the licence and distribute the adaptation under the same or a compatible licence.

6. Links to third parties

The site links to third-party services, including GitHub, Lichess and Creative Commons. The owner does not control those sites and is not responsible for their content, availability or privacy policies, which you should read before using them.

7. Liability

The owner endeavours to keep the site’s information correct and up to date but does not guarantee the absence of errors or the uninterrupted availability of the site or the downloads. The Luft application is distributed free of charge “as is”, with the warranty exclusions and liability limitations set out in its licence agreement. Verifying each download against the published SHA-256 checksum is recommended.

8. Governing law

This notice is governed by Spanish law. Any dispute shall be submitted to the courts of the owner’s domicile, unless the user is a consumer, in which case the courts of the user’s own domicile are also available. Should the Spanish and English versions of this site’s legal texts differ, the Spanish version prevails.