Stockfish Blog

Blog Stockfish Chess. Release notes for Stockfish, a powerful open source chess engine..

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  • 3 years

    Stockfish 8

    Stockfish 8 is out!
    This is the result of the effort of many people along many months: it has been a huge and hard effort and I would like to thank all the testers for their relentless patience, determination and creativity. I would like to thank all the people supporting...

  • 4 years

    Stockfish 7

    Stockfish 7 is out!
    This release is around 60 ELO stronger than Stockfish 6 in self play.
    SMP algorithm has been changed from YBW to Lazy SMP.

  • 5 years

    Stockfish 6

    Stockfish 6 is now available!
    This release adds support for Syzygy endgame tablebases, and is 50 ELO stronger than Stockfish 5 in self play.
    We recommend that you download Syzygy bases via torrent from here:

  • 6 years

    Stockfish 5

    Stockfish 5 is now available!
    This is the version that won TCEC Season 6 but without table-bases.
    From SF DD released at end of November of last year a lot of work has been done:

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