public static int[,] Solve(int[,] sudoku)
{
SudokuBoard board = new SudokuBoard(sudoku);
board = Solve(board);
sudoku = board.GetAsMultidimentionalArray();
return(sudoku);
}
public static int[,] Create(SudokuBoard.BoardProperty boardProperty = SudokuBoard.BoardProperty.NineByNine)
{
Random random = new Random();
SudokuBoard solution = new SudokuBoard(boardProperty);
solution.SetField();
solution = Solve(solution);
int[,] sudoku = solution.GetAsMultidimentionalArray();
List <int[]> fields = new List <int[]>();
for (int x = 0; x < sudoku.GetLength(0); x++)
{
for (int y = 0; y < sudoku.GetLength(0); y++)
{
fields.Add(new int[] { x, y });
}
}
while (fields.Count() != 0)
{
int[,] newSudokuAttempt = CreateCopyOfArray(sudoku);
int[] randomField = fields[random.Next(fields.Count())];
newSudokuAttempt[randomField[0], randomField[1]] = 0;
solution.SetField(newSudokuAttempt);
solution = Solve(solution, false);
if (solution.Finished)
{
sudoku = newSudokuAttempt;
}
fields.Remove(randomField);
}
return(sudoku);
}
