A implementation of the classic Sudoku puzzle game with a graphical user interface built in Java Swing. The game offers multiple difficulty levels, interactive features, and a sophisticated cell highlighting system for an engaging puzzle-solving experience.
- Multiple Difficulty Levels:
- Easy Mode: 35-45 pre-filled numbers
- Medium Mode: 30-40 pre-filled numbers
- Hard Mode: 25-35 pre-filled numbers
- Basic Controls:
- New Game: Start a fresh game
- Reset: Clear all user-entered values
- Show Solution: Display the complete solution
- Timer to track solving duration
- 9x9 Sudoku Grid with visually distinct 3x3 sub-regions
- Smart Cell Interaction:
- Automatic highlighting of related cells (row, column, and 3x3 box)
- Keyboard navigation between cells using arrow keys
- Real-time error detection with visual feedback
- Invalid entries highlighted in red
- Visual distinction between initial and user-filled cells
- Built using Java Swing for the GUI
- Implements Model-View-Controller pattern
- Custom cell highlighting system
- Input validation
- Automated puzzle generation and solution verification
SudokuPuzzle: Main game window and control logicSudokuPanel: Grid panel implementationSudokuCell: Individual cell implementation with input handlingSudokuSolver: Puzzle generation and solution verificationGameState: Game state serialization
- Java Development Kit (JDK) 8 or higher
- Java Runtime Environment (JRE)
javac SudokuPuzzle.javajava SudokuPuzzle- Select difficulty level from the dropdown menu
- Click "New Game" or press Ctrl+N to start
- Fill cells using number keys 1-9
- Use arrow keys to navigate between cells
- Incorrect entries will be highlighted in red
- Complete the puzzle by filling all cells correctly
Feel free to fork this repository and submit pull requests for any improvements. Please ensure your code follows the existing style and includes appropriate comments.
This project is available under the MIT License. See the LICENSE file for more details.