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 for "stockfish chess engine history":

Stockfish (chess) - Wikipedia
https://en.wikipedia.org/wiki/Stockfish_(chess)
On 18 June 2014 Marco Costalba announced that he had "decided to step down as Stockfish maintainer" and asked that the community create a fork of the current version and continue its development.[22] An official repository, managed by a volunteer group of core Stockfish developers, was created soon after and currently manages the development of the project.[23]
Fishtest[edit]
Since 2013, Stockfish has been developed using a distributed testing framework named Fishtest, where volunteers can donate CPU time for testing improvements to the program.[24][25][26]
Changes to game-playing code are accepted or rejected based on results of playing of tens of thousands of games on the framework against an older "reference" version of the program, using sequential probability ratio testing. Stockfish has been one of the best chess engines in the world for several years,[4][5][6] it has won all main events of the Top Chess Engine Championship (TCEC) and the Chess.com Computer Chess Championship (CCC) since 2020 and, as of February 2024, is the strongest CPU chess engine in the world with an estimated Elo rating of 3634.[7]
 In Season 25, Stockfish once again defeated Leela, but this time by a narrower margin of 52-48.[48]
Stockfish also took part in the TCEC cup, winning the first edition, but was surprisingly upset by Houdini in the semifinals of the second edition.[37][49] Stockfish recovered to beat Komodo in the third-place playoff.[37] In 100 games from the normal starting position, AlphaZero won 25 games as White, won 3 as Black, and drew the remaining 72, with 0 losses.[175] AlphaZero also played twelve 100-game matches against Stockfish starting from twelve popular openings for a final score of 290 wins, 886 draws and 24 losses, for a point score of 733:467.[176][note 2]
AlphaZero's victory over Stockfish sparked a flurry of activity in the computer chess community, leading to a new open-source engine aimed at replicating AlphaZero, known as Leela Chess Zero. As of February 2024, the framework has used a total of more than 12000 years of CPU time to play over 7 billion chess games.[28]
NNUE[edit]
In June 2020, an efficiently updatable neural network (NNUE) fork introduced by computer shogi programmers called Stockfish NNUE was discussed by developers.[29][30] In July 2020 chess news reported that Stockfish NNUE had "broken new ground in computer chess by incorporating a neural network into the already incredibly powerful Stockfish chess engine.

Stockfish - Chess Engines - Chess.com
https://www.chess.com/terms/stockfish-chess-engine
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. Stockfish was based on a chess engine created by Tord Romstad in 2004 that was developed further by Marco Costalba in 2008. Joona Kiiski and Gary ...

Stockfish - Strong open-source chess engine
https://stockfishchess.org/
Stockfish has won the Top Chess Engine Championship and Chess.com Computer Chess Championship, and consistently ranks highly on rating lists. Competition Results. Open Source. Stockfish is open source (GPLv3 license). That means you can read the code, modify it, and contribute back.

About - Stockfish - Strong open-source chess engine
https://stockfishchess.org/about/
In November 2008, Marco Costalba forked the Glaurung 2.1 code and introduced Stockfish 1.0. Tord and Joona Kiiski joined the Stockfish project and the Glaurung project slowly faded away. Meanwhile, Stockfish quickly rose to become the strongest open source chess engine, with frequent updates every few months. Today, it remains one of the ...

Stockfish - Chessprogramming wiki
https://www.chessprogramming.org/Stockfish
Starting out among the top twenty engines, Stockfish has quickly climbed in strength to become the world strongest chess entity as of 2018 - at least concerning the AlphaZero hype , public available chess entity. The name "Stockfish" reflects the ancestry of the engine. Tord is Norwegian and Marco Italian, and there is a long history of ...


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