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Fairy-Stockfish 14. What is this fabulous fish ?

Do you want to play with an engine that supports different varieties of chess?

Fairy-Stockfish is the answer to such a need.

It's an engine developed from Stockfish that can play probably all known chess variants.

Chess variants

  • Capablanca, Janus, Modern, Chancellor, Embassy, Gothic, Capablanca random chess

  • Grand, Shako, Centaur, Tencubed, Opulent

  • Chess960, Placement/Pre-Chess

  • Crazyhouse, Loop, Chessgi, Pocket Knight, Capablanca-Crazyhouse

  • Bughouse, Koedem

  • ...,

As if that weren't enough, Fairy-Stockfish supports regional and historical games:

  • Xiangqi, Manchu, Minixiangqi, Supply chess

  • Shogi, Shogi variants

  • Janggi

  • Makruk, ASEAN, Makpong, Ai-Wok

  • Ouk Chatrang, Kar Ouk

  • ...,

And even it can also play user-defined variants loaded via a variant configuration file.

Fairy-Stockfish, by Mr. Fabian Fichter, is a free open source chess engine under the GNU GPL 3.0 license. Without a doubt, the development of this engine would not have been as extensive in terms of chess variants supported if it were not for the numerous contributors listed here.

Interested? The developers provide an opportunity to try the engine online using a web browser.

In order to play with Fairy-Stockfish on your computer, you need to use a program that supports the game of the chess variety you are interested in. A good choice is the Cute Chess program described recently on The author also recommends other free GUIs.

To make the game more interesting, you can determine the strength of the engine's play with the UCI Elo parameter (the UCI_LimitStrenght parameter must be enabled).

The available parameters are described in detail on the engine's GitHub page.

Here are some screenshots from the Cute Chess program; Crazyhouse variant, Fairy-Stockfish strength 1000 Elo.

Playing with Fairy-Stockfish is really a lot of fun!

Especially for engine skirmish enthusiasts, Fairy-Stockfish has dedicated neural networks for specific chess variants, which will significantly increase power.

Fairy-Stockfish is a very well-documented chess engine worth having in your collection.

All you need to enjoy it is any computer, even the oldest one. And that's why, in addition to compilations for contemporary computers, I've prepared downloadable binaries, also for 32-bit machines, whose glory years are long behind them.

All files are in widely compatible versions.

Linux arm32 & arm64 & x64 – Compiled by Darius

Download 7Z • 712KB
Download 7Z • 706KB
Download 7Z • 714KB

Mac Apple Silicon & Intel – Compiled by Darius

Download 7Z • 665KB
Download 7Z • 674KB

Windows x32 & x64 – Compiled by Darius

Download 7Z • 1.50MB
Download 7Z • 1.41MB

You can still find other and older versions of this chess engine here.


In the Files area you will find free chess engines for download.



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