Open-source licenses
howtostudychess analyses your games with the Stockfish chess engine, which runs directly in your browser via WebAssembly.
Stockfish
- Component
- Stockfish (NNUE), lite single-threaded WebAssembly build
- Build
- stockfish.js 18 (nmrugg / Chess.com)
- License
- GNU General Public License v3.0 (GPLv3)
Stockfish is free software under the GPLv3. We distribute it unmodified. The corresponding source code is available from the official repositories:
- Engine source: github.com/official-stockfish/Stockfish
- WebAssembly build source: github.com/nmrugg/stockfish.js
- License text: gnu.org/licenses/gpl-3.0
The howtostudychess application code is proprietary and communicates with the Stockfish engine only through a standard worker/UCI message boundary.