The Kilobyte's Gambit
This chess game fits in 1,024 bytes of JavaScript and supports castling, en passant, and pawn promotion.
About The Kilobyte's Gambit
The Kilobyte's Gambit is a browser-based chess game built around a chess engine that fits in 1,024 bytes of JavaScript. The engine handles board setup and move validation within that size limit. The site presents the game with instructions and an explanation of how it works.
You play as White by clicking a piece and then clicking the square to move to. The game supports castling, en passant, and pawn promotion, with promotion limited to queen only. You can start a new game with the Start Game button, restart during play, and open the How It Works section for details. The game does not announce victory or defeat; it only stops further moves when play ends.
It suits chess players looking for a basic web game and readers interested in compact code and browser programming.
Key features
- Play chess in a web browser as White
- Click a piece then click destination square
- Supports castling, en passant, and pawn promotion
- Pawn promotion is limited to queen only
- Restart game and view how it works
- Runs in a web browser
- Includes castling, en passant, and promotion
- Simple click-to-move controls
- Player can only play as White
- Pawn promotion only to queen
- No victory or defeat announcement
The Kilobyte's Gambit at a glance
- Website
- vole.wtf/kilobytes-gambit
- Category
- Gaming › Tabletop & Board Games
- Type
- Website
- Pricing
- Not confirmed. Check the site
- Platforms
- Web
- Open source
- Not stated
- Language
- English
- Last checked
- Oct 5, 2026 · Online when checked
- Listed
- Oct 5, 2026
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The Kilobyte's Gambit FAQ
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