Both and Lichess provide Stockfish in this form in addition to a server-side program. Stockfish can be compiled to WebAssembly or JavaScript, allowing it to run in the browser. Other Stockfish-compatible graphical user interfaces (GUIs) include Fritz, Arena, Stockfish for Mac, and P圜hess. On mobile, it has been bundled with the Stockfish app, SmallFish and Droidfish. On desktop, it is the default chess engine bundled with the Internet Chess Club interface programs BlitzIn and Dasher. Stockfish has been a very popular engine on various platforms. In 2018 support for the 7-men Syzygy was added, shortly after becoming available. The Syzygy tablebase support, previously available in a fork maintained by Ronald de Man, was integrated into Stockfish in 2014. Stockfish supports Chess960, which is one feature that was inherited from Glaurung. As of August 2023, Stockfish 16 (4-threaded) achieves an Elo rating of 3541 +19 Compared to other engines, it is characterized by its great search depth, due in part to more aggressive pruning and late move reductions. Stockfish implements an advanced alpha–beta search and uses bitboards. The maximal size of its transposition table is 32 TB. Stockfish can use up to 1024 CPU threads in multiprocessor systems. It is derived from Glaurung, an open-source engine by Tord Romstad released in 2004.

It is now being developed and maintained by the Stockfish community. The Stockfish engine was developed by Tord Romstad, Marco Costalba, and Joona Kiiski. It has won the Top Chess Engine Championship 14 times and the Computer Chess Championship 19 times. Its estimated Elo rating is around 3550 (CCRL 40/15). Stockfish has consistently ranked first or near the top of most chess-engine rating lists and, as of April 2023, is the strongest CPU chess engine in the world. It can be used in chess software through the Universal Chess Interface. Stockfish is a free and open-source chess engine, available for various desktop and mobile platforms.

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