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| # Chess UI Implementation Details | |
| ## Overview | |
| This implementation provides a modern, interactive web UI for the chess engine using React with TypeScript and Tailwind CSS. The UI is designed to be fluid, responsive, and user-friendly, addressing the limitations of the previous Streamlit interface. | |
| ## Key Features | |
| 1. **Interactive Chess Board**: | |
| - Pieces can be moved by clicking on the source and destination squares | |
| - Valid moves are highlighted with green dots | |
| - Hint moves are highlighted with a light color | |
| - Last move is animated for better visibility | |
| 2. **Visual Feedback**: | |
| - Selected pieces are highlighted | |
| - Legal moves are shown with green dots | |
| - Hints highlight both source and destination squares | |
| - Move animations provide visual feedback | |
| 3. **Game Controls**: | |
| - New Game with configurable options (difficulty, color, time limit) | |
| - Undo Move functionality | |
| - Resign option | |
| - Board theme selection (brown or grey) | |
| 4. **Game Information**: | |
| - Current game status display | |
| - Move history tracking | |
| - Position analysis with evaluation bar | |
| - Material and positional advantage indicators | |
| ## Technical Implementation | |
| ### Components Structure | |
| 1. **App.tsx**: Main application component that organizes the layout | |
| 2. **ChessBoard.tsx**: Handles the chess board rendering and interaction logic | |
| 3. **GameControls.tsx**: Provides game control buttons and options | |
| 4. **GameInfo.tsx**: Displays game status, move history, and analysis | |
| ### API Integration | |
| The UI communicates with the backend REST API using Axios. The main endpoints used are: | |
| - `/game/new`: Start a new game with specified options | |
| - `/game/move`: Make a move on the board | |
| - `/game/state`: Get current game state | |
| - `/game/hint`: Get a hint for the current position | |
| - `/game/undo`: Undo moves | |
| - `/game/resign`: Resign the current game | |
| ### Chess Logic | |
| - FEN parsing to render the board state | |
| - Legal move validation through the API | |
| - Piece movement handling | |
| - Game state tracking | |
| ### Styling | |
| - Tailwind CSS for responsive design | |
| - Custom CSS for chess-specific styling | |
| - Animations for piece movement | |
| - Theme support for different board styles | |
| ## Asset Usage | |
| The implementation uses the provided chess assets: | |
| - Board squares from both brown and grey themes | |
| - Chess piece images for both black and white pieces | |
| ## Future Enhancements | |
| 1. **Drag and Drop**: Implement drag-and-drop functionality for piece movement | |
| 2. **Sound Effects**: Add sound effects for moves, captures, and game events | |
| 3. **Move Notation**: Display algebraic notation for moves in the history panel | |
| 4. **Time Control**: Add chess clock functionality | |
| 5. **Opening Explorer**: Integrate an opening book explorer | |
| 6. **Game Analysis**: Enhanced post-game analysis features | |
| 7. **Local Storage**: Save game state to browser storage for resuming games |