A simple backtracking Sudoku Solver written for .NET Core. https://dot.net/core for info.
git clone https://github.com/chuckries/SudokuSolver
cd SudokuSolver
dotnet restore
dotnet run -----------------------
| 8 0 0 | 0 0 0 | 0 0 0 |
| 0 0 3 | 6 0 0 | 0 0 0 |
| 0 7 0 | 0 9 0 | 2 0 0 |
|-------+-------+-------|
| 0 5 0 | 0 0 7 | 0 0 0 |
| 0 0 0 | 0 4 5 | 7 0 0 |
| 0 0 0 | 1 0 0 | 0 3 0 |
|-------+-------+-------|
| 0 0 1 | 0 0 0 | 0 6 8 |
| 0 0 8 | 5 0 0 | 0 1 0 |
| 0 9 0 | 0 0 0 | 4 0 0 |
-----------------------
-----------------------
| 8 1 2 | 7 5 3 | 6 4 9 |
| 9 4 3 | 6 8 2 | 1 7 5 |
| 6 7 5 | 4 9 1 | 2 8 3 |
|-------+-------+-------|
| 1 5 4 | 2 3 7 | 8 9 6 |
| 3 6 9 | 8 4 5 | 7 2 1 |
| 2 8 7 | 1 6 9 | 5 3 4 |
|-------+-------+-------|
| 5 2 1 | 9 7 4 | 3 6 8 |
| 4 3 8 | 5 2 6 | 9 1 7 |
| 7 9 6 | 3 1 8 | 4 5 2 |
-----------------------