Csharp.SudokuSolver 1.0.7

🧩 Sudoku Solver

A lightweight C# console application developed by Systecs, designed to read, solve, and display Sudoku puzzles from simple .txt files.
The solver automatically interprets the puzzle, applies logical solving techniques, and outputs the result in a clear console format.

🚀 Features

• ✅ Reads Sudoku puzzles from plain .txt files
• 🧠 Automatically solves the puzzle using logical algorithms
• 📄 Supports JSON serialization and deserialization
• 💬 Clean console output with formatted grid display
• ⚙️ Modular code structure (Input, Logic, Output)
• 💻 100% written in C# (.NET)

📂 Project Structure

SudokuSolver/
│
├── BasicClass/          # Core classes like Cell and Block
├── Logic/               # Solving algorithms and Sudoku logic
├── Input/               # Handles reading puzzles from text files
├── Output/              # Displays Sudoku and results in console
│
├── Program.cs           # Main entry point
├── README.md            # This file
├── LICENSE              # MIT License
└── sudoku.txt           # Example Sudoku puzzle

⚙️ How to Use

1. Place your Sudoku puzzle in a .txt file using the following format:

   003600080
   009801702
   000500006
   000010003
   085000904
   070020000
   090007000
   053000000
   000090004
   

   (Use 0 for empty cells.)

2. Run the console application: bsp main with the following code in Program.cs:

   static void Main(string[] args)
   {
      string path = "sudoku.txt";
      Cell[,] grid = InputTxt.GetCellsFromText(path);
   
      Sudoku sudoku = new Sudoku(grid);
   
      string result = sudoku.Solve();
   
      SudokuOutput.ShowSudoku(result);
   }
   

3. The solved Sudoku will be displayed in the console:

   5 3 1 | 6 7 2 | 4 8 9
   6 4 9 | 8 3 1 | 7 5 2
   ...
   

🧱 Technologies Used

• Language: C#
• Framework: .NET 8.0
• Libraries: Newtonsoft.Json
• IDE: Visual Studio 2022

💡 Example Output

5 3 1 | 6 7 2 | 4 8 9
6 4 9 | 8 3 1 | 7 5 2
8 2 7 | 5 4 9 | 3 1 6
------+-------+------
9 6 2 | 4 1 5 | 8 7 3
1 8 5 | 7 6 3 | 9 2 4
7 4 3 | 9 2 8 | 5 6 1
------+-------+------
2 9 6 | 1 8 7 | 4 3 5
4 5 3 | 2 9 6 | 1 8 7
8 7 1 | 3 5 4 | 2 9 6

🧑‍💻 Author

Systecs
Blake Huettermann blake.huettermann@systecs.com

⚖️ License

This project is licensed under the MIT License.

Copyright (c) 2025 Systecs
Released under the MIT License.

You are free to use, modify, and distribute this software for any purpose.