SILICON CHESS

Licenses and open source

Native components

SilicioRules, SilicioBoard, SilicioPGN and the drawing system are proprietary components. Their scope and licensing are documented separately.

Silicio license Technical provenance Third-party notices

Stockfish 18 smallnet

The manifest for the version in use declares AGPL-3.0-or-later; its source archive also retains the GPLv3 text supplied by the provider. We take the conservative approach: the Worker adaptation and its source are available here.

Read AGPL license Provenance and modifications Download source Original JavaScript Adapted JavaScript Worker integration Reproducible adaptation

Separate licenses

Publishing the Stockfish component and its open integration does not give Silicon Chess ownership of the engine or, by itself, change the declared license of the independent native components.