I am looking for a relatively up to date opening book for stockfish5 chess engine. I do not need it to be created by a stockfish team (only to work together with stockfish).

Up till now the only thing I was able to find is really old book (it was updated during the time of version 2).

Is there anything newer?

  • 1
    Stockfish uses an open Polyglot book format. A simple google for "Polyglot chess book" will returns interesting results.
    – SmallChess
    Commented Dec 4, 2014 at 23:41
  • @StudentT thank you. Did no know about polyglot format. Actually was not able to find a normal book based on similar to yours searches (the best one was 1.4Mb, whereas my old stockfish book is 5.8mb). Commented Dec 5, 2014 at 0:12
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    The best chess books are designed for the Chessbase and Hiarcs format. The largest Polyglot books are usually bundled with a chess engine. I don't want to search every engine site, but I have seen it. You could build your own book. It's easy, this way you can turn a 100GB database into a gigantic book.
    – SmallChess
    Commented Dec 5, 2014 at 0:19

1 Answer 1


This github post has links to polyglot books; the Komodo book looks especially enticing to me: https://github.com/michaeldv/donna_opening_books

Direct link to Komodo downloads: http://komodochess.com/downloads.htm

  • These books are for Donna, not Stockfish
    – M.M
    Commented Jul 26, 2016 at 3:31
  • Actually, books (as long as the correct format is used) are cross compatible with any engine. So, Stockfish should be able to use it no problem. Commented Jul 28, 2016 at 12:47

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