# Chess Unblocked

> Chess Unblocked (https://chessunblocked.qzz.io/) is a free chess game that runs in the web browser. Visitors can play against a built-in computer opponent (Easy, Medium or Hard) or play a friend on the same device (2 player / pass and play). No download, no account and no adverts. It follows the full rules of chess, including castling, en passant, promotion, checkmate, stalemate and draws, and works offline after the first visit.

Key facts:
- Price: free. Account: not needed. Download: not needed.
- Modes: vs computer (three levels, play as White or Black); 2 players on one device. There is no online multiplayer.
- Devices: phones, tablets, Chromebooks, Windows, Mac and Linux, in any modern browser.
- Features: legal-move highlighting, undo, board flip, automatic board turn for 2 players, move list exportable as PGN, keyboard play.
- It does not bypass school or workplace network filters; it is simply a small, fast site.

## Pages
- [Play chess vs the computer or a friend](https://chessunblocked.qzz.io/): the main game page.
- [2 player chess](https://chessunblocked.qzz.io/2-player-chess/): opens the board in two-player mode for two people sharing one device.
- [Chess rules for beginners](https://chessunblocked.qzz.io/how-to-play-chess/): board setup, how each piece moves, castling, en passant, promotion, check, checkmate, stalemate, draws and notation.

## Optional
- [About](https://chessunblocked.qzz.io/about/): how the site is built and the open-source software it uses.
- [Privacy](https://chessunblocked.qzz.io/privacy/): what is stored and the analytics used.
- [Full text of all pages](https://chessunblocked.qzz.io/llms-full.txt)