protected bool isFieldDetermined(SudokuPuzzle sudoku, SudokuPuzzle solution, SudokuField field)
{
// get value from the first solution
int solutionValue = solution.Fields[field.RowIndex, field.ColumnIndex].Value;
// try to solve the sudoku again, but now without the value from the first solution
field.Possibilities[solutionValue - 1] = false;
var secondSolution = guessNextField(sudoku, field);
// if there is no second solution, the sudoku has definitely a unique solution
return(secondSolution == null || solution.Equals(secondSolution));
}
protected bool isFieldDetermined(SudokuPuzzle sudoku, SudokuPuzzle solution, /*Field field,*/ int row, int column)
{
// get value from the first solution
var field = sudoku.Fields[row, column];
int value = solution.Fields[row, column].Value;
// try to solve the sudoku again, but now without the value from the first solution
field.Possibilities[value - 1] = false;
var secondSolution = guessNextField(sudoku, field);
// if there is no second solution, the sudoku has definitely a unique solution
return(secondSolution == null || solution.Equals(secondSolution));
}
public void CreatedPuzzlesAreCorrect()
{
SudokuPuzzle expected = new SudokuPuzzle("Grid 01")
{
PuzzleMatrix = new int[][]
{
new int[] { 0, 0, 3, 0, 2, 0, 6, 0, 0 },
new int[] { 9, 0, 0, 3, 0, 5, 0, 0, 1 },
new int[] { 0, 0, 1, 8, 0, 6, 4, 0, 0 },
new int[] { 0, 0, 8, 1, 0, 2, 9, 0, 0 },
new int[] { 7, 0, 0, 0, 0, 0, 0, 0, 8 },
new int[] { 0, 0, 6, 7, 0, 8, 2, 0, 0 },
new int[] { 0, 0, 2, 6, 0, 9, 5, 0, 0 },
new int[] { 8, 0, 0, 2, 0, 3, 0, 0, 9 },
new int[] { 0, 0, 5, 0, 1, 0, 3, 0, 0 },
}
};
SudokuPuzzle actual = SudokuPuzzle.CreateFromStream(GetStreamFromFileName(GOODSINGLEPUZZLEFILE));
Assert.IsTrue(actual.Equals(expected));
}