Centichess

Features

• Interactive Chess Board: Beautiful, responsive chessboard with multiple piece sets and themes
• Advanced Analysis: Powered by multiple Stockfish versions including Stockfish 17 Lite and NNUE
• Detailed Game Reports: Get comprehensive insights about your games including:
  • Move accuracy and classification (Perfect, Excellent, Good, Inaccuracy, Mistake, Blunder)
  • Game phase detection (Opening, Middlegame, Endgame)
  • Visual evaluation graph
  • Time management analysis
  • Game statistics and patterns
• Customizable Interface: Multiple board themes, piece sets, and UI customization options
• Multiple Game Sources: Support for:
  • Direct PGN import
  • Lichess game analysis
  • Manual game input
• Fast & Efficient: Client-side analysis means no server delays or queues
• Fully Web-Based: No installation required - works right in your browser
• Responsive Design: Works seamlessly on both desktop and mobile devices

Live Demo

Try it live at: centichess.org

Technical Stack

• Pure JavaScript (ES6+)
• HTML5 Canvas for board element and arrow rendering
• Web Workers for background analysis
• Multiple Stockfish versions (11, 16, 17) with NNUE support

Development

Prerequisites

• Modern web browser
• Local web server (for development)

Setup

1. Clone the repository:

git clone https://github.com/cooper-ross/centichess.git

2. Navigate to the project directory:

cd centichess

3. Serve the project using any local web server. For example, using Python:

# Python 3
python -m http.server 8000

4. Open http://localhost:8000 in your browser

Project Structure

centichess/
├── assets/            # Static assets (pieces, sounds, etc.)
├── libs/             # Third-party libraries
├── src/              # Source code
│   ├── classification/   # Game analysis algorithms
│   ├── components/      # UI components
│   ├── engines/        # Stockfish engine variants
│   ├── evaluation/     # Position evaluation logic
│   └── pages/         # Page-specific code
└── index.html        # Main entry point

Contributing

Contributions are welcome! Whether it's:

• Bug fixes
• New features
• Documentation improvements
• UI/UX enhancements

Please feel free to submit pull requests or open issues.

Acknowledgments

• Stockfish - The powerful chess engine that powers the analysis
• chess.js - Chess logic implementation