About ChessX
ChessX is an Open Source chess database. With ChessX you can operate on your collection of chess games in many ways:
browse, edit, add, organize, analyze, etc.
Load and save PGN files
Work with multiple databases simultaneously
Browse games, including variations
Enter moves, variations, comments
Play games in training mode or play out games against an engine
Setup board, copy/paste FEN, merge games
Lint tools to catch performance, usability, version compatibility, and other problems.
Display opening tree for current position
Analyze using UCI and Winboard/Xboard Chess engines
Observe and play games on FICS
How to install ChessX
- Click Download — the developer's official website opens in a new tab.
- Download the latest version there and run it. Choose Custom/Advanced where offered, and skip any bundled extras.
- Prefer the command line? With Flatpak you can install and update it with: flatpak install flathub net.sourceforge.Chessx
- Open ChessX once it finishes installing.
Frequently asked questions
Is ChessX free to download?
Yes. The Download button sends you to flathub.org, the developer's official site, where ChessX is available to download. Flatnic doesn't host or modify any files.
How do I install ChessX from the command line?
With Flatpak, run: flatpak install flathub net.sourceforge.Chessx. This installs it from the official source and keeps it updated.
Is ChessX safe?
ChessX downloads directly from the developer. As always, scan the installer with your antivirus and choose Custom setup to skip any bundled extras.
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