Syzygy Chess Tablebase is a companion app with SmallFish (running the Stockfish engine). Download this app to import 6-men tablebase files into SmallFish. You can also import your own Syzygy files with iTunes.

Please read the following description carefully.


Syzygy 6-men endgames require significant system resources to run. It is recommended only a single 6-men endgame is installed (e.g. rook endgame). The SmallFish app might crash if you have too many 6-pieces installed (not enough memory). Your device should be iPhone 6/iPad 3 or newer, with at least 2GB RAM.

Syzygy on the iOS is still a new technology, we are trying to improve it in the coming releases.


This app bundles two highly popular 6-men Syzygy tablebase piece configurations on rook endgames.

- Rook, Pawn, Pawn vs Rook
- Rook, Pawn vs Rook, Pawn

You should download this app to improve the Stockfish engine performance on rook endgames.


This app is a 2GB download. You will need the following:

- The SmallFish chess app - running the Stockfish engine
- Import 5-men Syzygy tablebase files into SmallFish (Search "Syzygy Tablebase" on the App Store if you don't have the 5-men app).
- 2GB disk space for this app
- Another 2GB disk space to process the tablebase files

You will need at least 4GB disk space to run this app. It is important to import the 5-men tablebase files before the 6-men endgame files.

You should also leave a few GB unused disk space while running SmallFish with 6-men endgames.


Syzygy endgame tablebase is a massive database that contains pre-calculated exhaustive analysis of chess endgame positions. The tablebase is able to tell you whether your position is a win, loss or draw instantly, without running lengthly analysis.

The latest Stockfish 8 chess engine provide support of the new Syzygy tablebase format. You should use this app:

- Improve your Stockfish analysis and performance
- Check distance to the nearest checkmate
- Import your own Syzygy files with iTunes
- Integrate tablebase with the SmallFish chess app (it's free)

The tablebase bundled with this app should bring about 50 ELO improvement to the Stockfish engine and is recommended for all serious players.

What's New

Version 10.5.0

Added a new download section for new selected 6-men endgames. For example, the queen endgame bundle will give you two new popular queen endgames.

Ratings and Reviews



i am carrying around 5 and 6 piece endgame databases! btw, it took me a minute to sort out how to use them so i will share...first you have to have room for the download and expansion...this is a tablebase reality. i think the total load is 5GB...but i may have that wrong. be sure to read, read, read before you download. next, you have to import the data into the small chess app...starting in the tablebase app in worked for me with zero issues, but ive got the biggest iphone 7 so i cant speak for the other iphone models.


Lumberton NJ

I followed the instructions and it appears that there is no way to load the 6-man database can be loaded into SmallFish. I loaded the 5-man easily, but 6-man has no means. $0.99 wasted, don't buy this unless you want to throw away a dollar.


Ted Wong
1.5 GB
Requires iOS 10.0 or later. Compatible with iPhone, iPad, and iPod touch.
Age Rating
Rated 4+
© SmallChess


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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