Language Selection

English French German Italian Portuguese Spanish

GPL Enforcement and Violations: Stockfish and More

Submitted by Roy Schestowitz on Tuesday 20th of July 2021 09:28:57 PM Filed under
GNU
Legal
  • Our lawsuit against ChessBase

    The Stockfish project strongly believes in free and open-source software and data. Collaboration is what made this engine the strongest chess engine in the world. We license our software using the GNU General Public License, Version 3 (GPL) with the intent to guarantee all chess enthusiasts the freedom to use, share and change all versions of the program.

    Unfortunately, not everybody shares this vision of openness. We have come to realize that ChessBase concealed from their customers Stockfish as the true origin of key parts of their products (see also earlier blog posts by us and the joint Lichess, Leela Chess Zero, and Stockfish teams). Indeed, few customers know they obtained a modified version of Stockfish when they paid for Fat Fritz 2 or Houdini 6 - both Stockfish derivatives - and they thus have good reason to be upset. ChessBase repeatedly violated central obligations of the GPL, which ensures that the user of the software is informed of their rights. These rights are explicit in the license and include access to the corresponding sources, and the right to reproduce, modify and distribute GPLed programs royalty-free.

  • Stockfish sues ChessBase

    The Stockfish project, which distributes a chess engine under GPLv3, has announced the filing of a GPL-enforcement lawsuit against ChessBase, which has been (and evidently still is) distributing proprietary versions of the Stockfish code.

  • Are you compliant with open-source license obligations?

    A short answer is no. Your piece of software will not be open-source if it doesn’t have an open-source license. Under copyright law, such software is copyrighted by default, with all the restrictions that this implies.

    If you want anyone to use your code freely, you should ensure certain liberties commonly called “the four freedoms“. They say that OS software may be used, studied, modified, and distributed freely, as long as the license is respected.

    For the first three, there are no conditions of any kind; you are free to use, study, and modify the code for any purpose. If you move beyond that and decide to distribute your modified version (or the original), this is when open-source license compliance starts.

    Missing license texts are the number one cause of license infringement cases, which, as we’ve seen above, can lead to the loss of ownership rights and enforcement actions such as an interim injunction.

»

Stockfish Contributors Sue ChessBase for GPL Violations

Submitted by Roy Schestowitz on Friday 23rd of July 2021 12:03:49 AM.
  • Stockfish Contributors Sue ChessBase for GPL Violations

    A legal reckoning is brewing in the world of open source chess engines. Stockfish, a GPL-licensed chess engine widely recognized as one of the strongest in the world, has filed a lawsuit against ChessBase. The German-based company makes and sells chess software that relies heavily on the Stockfish engine, maintains a prominent chess news site, and runs a chess server for online games.

    [...]

    “This chess engine is a Stockfish derivative, with a few lines of code modification (engine name, authors list and a few parameters), and a new set of NNUE net weights considered proprietary,” current Stockfish maintainer Joost VandeVondele said. “ChessBase’s communication on Fat Fritz 2, claiming originality where there is none, has shocked our community. Furthermore, the engine Fat Fritz 2 fails to convince on independent rating lists, casting doubt on the usefulness of those modifications. Indeed, we feel that customers buying Fat Fritz 2 get very little added value for money. Claims to the contrary appear misleading.”

Stockfish Developers Sue Chessbase Claiming Copyright Violation

Submitted by Roy Schestowitz on Saturday 24th of July 2021 07:19:09 PM.
  • Stockfish Developers Sue Chessbase Claiming Copyright Violation

    The Stockfish team has filed a lawsuit against Chessbase, claiming that the German chess software company is selling their software without having the license to do so. The lawsuit, filed in a German court, was announced last Tuesday in a blog on the Stockfish website.

    The Stockfish team argues that Chessbase has "concealed from their customers Stockfish as the true origin of key parts of their products," namely Fat Fritz 2 and Houdini 6. According to the Stockfish team, Chessbase has "repeatedly violated central obligations of the GPL," which refers to informing software users of their rights. "These rights are explicit in the license and include access to the corresponding sources, and the right to reproduce, modify and distribute GPLed programs royalty-free," the Stockfish team writes.

  • GitHub Copilot sparks debates around open-source licenses

    A few weeks ago GitHub released its Copilot solution, which uses AI to suggest code to developers. Developers can write a comment in their code and Copilot will automatically write the code it thinks is appropriate. It’s an impressive example of the power of AI, but has many developers and members of the open-source community upset and worrying over what it means for the future of open source.

Comment viewing options

Select your preferred way to display the comments and click "Save settings" to activate your changes.

More in Tux Machines

digiKam 7.7.0 is released

After three months of active maintenance and another bug triage, the digiKam team is proud to present version 7.7.0 of its open source digital photo manager. See below the list of most important features coming with this release. Read more

Dilution and Misuse of the "Linux" Brand

Samsung, Red Hat to Work on Linux Drivers for Future Tech

The metaverse is expected to uproot system design as we know it, and Samsung is one of many hardware vendors re-imagining data center infrastructure in preparation for a parallel 3D world. Samsung is working on new memory technologies that provide faster bandwidth inside hardware for data to travel between CPUs, storage and other computing resources. The company also announced it was partnering with Red Hat to ensure these technologies have Linux compatibility. Read more

today's howtos

  • How to install go1.19beta on Ubuntu 22.04 – NextGenTips

    In this tutorial, we are going to explore how to install go on Ubuntu 22.04 Golang is an open-source programming language that is easy to learn and use. It is built-in concurrency and has a robust standard library. It is reliable, builds fast, and efficient software that scales fast. Its concurrency mechanisms make it easy to write programs that get the most out of multicore and networked machines, while its novel-type systems enable flexible and modular program constructions. Go compiles quickly to machine code and has the convenience of garbage collection and the power of run-time reflection. In this guide, we are going to learn how to install golang 1.19beta on Ubuntu 22.04. Go 1.19beta1 is not yet released. There is so much work in progress with all the documentation.

  • molecule test: failed to connect to bus in systemd container - openQA bites

    Ansible Molecule is a project to help you test your ansible roles. I’m using molecule for automatically testing the ansible roles of geekoops.

  • How To Install MongoDB on AlmaLinux 9 - idroot

    In this tutorial, we will show you how to install MongoDB on AlmaLinux 9. For those of you who didn’t know, MongoDB is a high-performance, highly scalable document-oriented NoSQL database. Unlike in SQL databases where data is stored in rows and columns inside tables, in MongoDB, data is structured in JSON-like format inside records which are referred to as documents. The open-source attribute of MongoDB as a database software makes it an ideal candidate for almost any database-related project. This article assumes you have at least basic knowledge of Linux, know how to use the shell, and most importantly, you host your site on your own VPS. The installation is quite simple and assumes you are running in the root account, if not you may need to add ‘sudo‘ to the commands to get root privileges. I will show you the step-by-step installation of the MongoDB NoSQL database on AlmaLinux 9. You can follow the same instructions for CentOS and Rocky Linux.

  • An introduction (and how-to) to Plugin Loader for the Steam Deck. - Invidious
  • Self-host a Ghost Blog With Traefik

    Ghost is a very popular open-source content management system. Started as an alternative to WordPress and it went on to become an alternative to Substack by focusing on membership and newsletter. The creators of Ghost offer managed Pro hosting but it may not fit everyone's budget. Alternatively, you can self-host it on your own cloud servers. On Linux handbook, we already have a guide on deploying Ghost with Docker in a reverse proxy setup. Instead of Ngnix reverse proxy, you can also use another software called Traefik with Docker. It is a popular open-source cloud-native application proxy, API Gateway, Edge-router, and more. I use Traefik to secure my websites using an SSL certificate obtained from Let's Encrypt. Once deployed, Traefik can automatically manage your certificates and their renewals. In this tutorial, I'll share the necessary steps for deploying a Ghost blog with Docker and Traefik.

More on Tux Machines: About ● Gallery ● Forum ● Blogs ● Search ● News ● RSS Feed

Part of Bytes Media ● Sister sites below.

TechBytes Techrights button

Powered by Drupal, an open source content management system

Content available under CC-BY-SA CC

© by original authors

Powered by CentOS 6.5 (GNU/Linux), Varnish, and Drupal 6