Sep 6, 2024 · Free, open-source, and cross-platform chess engine, trusted by grandmasters and leading chess platforms worldwide. One of the strongest chess engines in the world. Winner of the Top …

Play against Stockfish: learn with the best chess engine. Stockfish is one of the best chess engines avaliable. And with the help of WebAssembly the engine can now also be executed online in the …

Challenge Stockfish, the world's strongest open-source chess engine, or play against other humans in our interactive Chess Arena. Test your skills against different AI difficulty levels.

Stockfish is the strongest chess engine available to the public and has been for a considerable amount of time. It is a free open-source engine that is currently developed by an entire community.

Mar 30, 2025 · Install Stockfish into the GUI. See that guide for several GUIs; if your GUI isn't listed, follow its manual. Check out our FAQ for recommended settings. We only recommend downloading …

Stockfish is a free and strong UCI chess engine derived from Glaurung 2.1 that analyzes chess positions and computes the optimal moves. Stockfish does not include a graphical user interface (GUI) that is …

Stockfish 18: What's New in the World's Strongest Chess Engine Released January 31, 2026 — 46 ELO stronger than its predecessor. Free, open source, and available right now.

Download Stockfish for Windows, Android, MacOS, iOS or Linux.

Jul 22, 2023 · Stockfish 16 is currently the most powerful chess engine in the world. The engine's latest version is significantly stronger, winning 12 more game pairs (where each engine plays both sides of …

Documentation, technical details, and frequent questions.