Stockfish - Strong open-source chess engine Stockfish Strong open-source chess engine Download, documentation, technical details, and frequent questions Download View on GitHub Latest from the blog 2025-03-30: Stockfish 17 1; 2024-09-06: Stockfish 17; 2024-02-24: Stockfish 16 1; Strong One of the strongest chess engines in the world Winner of the Top Chess Engine Championship and
Stockfish 16. 1 - Stockfish - Strong open-source chess engine In our testing against its predecessor, Stockfish 16 1 shows a notable improvement in performance, with an Elo gain of up to 27 points and winning over 2 times more game pairs than it loses Update highlights
Stockfish 10 - Stockfish - Strong open-source chess engine Official release version of Stockfish 10 Downloads are available at http: stockfishchess org download This is also the 10th anniversary version of the Stockfish project, which started exactly ten years ago!
Stockfish 17. 1 - Stockfish - Strong open-source chess engine In our testing against its predecessor, Stockfish 17 1 shows a consistent improvement in performance, with an Elo gain of up to 20 points and winning close to 2 times more game pairs than it loses Update highlights
Stockfish 15. 1 - Stockfish - Strong open-source chess engine With a +1 evaluation, Stockfish has now a 50% chance of winning the game against an equally strong opponent This convention scales down evaluations a bit compared to Stockfish 15 and allows for consistent evaluations in the future
Stockfish 9 - Stockfish - Strong open-source chess engine I am pleased to announce that Stockfish 9 is out You can download the offical builds from here https: stockfishchess org download I would like to thank all the amazing people that made this release possible All our testers and our developers, all the people that donate CPU time through fishtest (thank you!
Stockfish 15 - Stockfish - Strong open-source chess engine Stockfish 15 continues to push the boundaries of chess, providing unrivalled analysis and playing strength In our testing, Stockfish 15 is ahead of Stockfish 14 by 36 Elo points and wins nine times more game pairs than it loses
Stockfish 17 - Stockfish - Strong open-source chess engine During the past 1 5 years, hundreds of cores have been continuously running Stockfish to grow a database of analyzed positions This chess cloud database now contains well over 45 billion positions, providing excellent coverage of all openings and commonly played lines