public DifficultyType CheckSudokuDifficulty(SudokuCell[,] inputSudoku)
{
InitializeSudoku(inputSudoku);
var easySudoku = new EasySudokuTechniques(this);
var mediumSudoku = new MediumSudokuTechniques(this);
var hardSudoku = new HardSudokuTechniques(this);
counter = GetTheCountOfClues();
var sudokuDifficulty = DifficultyType.Easy;
while (true)
{
if (counter == 81)
{
break;
}
if (!easySudoku.UseAllEasyTechniques())
{
sudokuDifficulty = DifficultyType.Medium;
if (!mediumSudoku.UseNakedPairTechnique())
{
if (!mediumSudoku.UseNakedPairInBoxTechnique())
{
if (!mediumSudoku.UseCandidateLinesTechnique())
{
if (!mediumSudoku.UseX_WingTechnique())
{
if (!mediumSudoku.UseUniqueRectangleTechnique())
{
sudokuDifficulty = DifficultyType.Hard;
if (!hardSudoku.UseNishioTechnique(easySudoku, mediumSudoku))
{
sudokuDifficulty = DifficultyType.VeryHard;
return(sudokuDifficulty);
}
}
}
}
}
}
}
}
return(sudokuDifficulty);
}
public SudokuCell[,] SolveSudoku(SudokuCell[,] inputSudoku)
{
InitializeSudoku(inputSudoku);
var easySudoku = new EasySudokuTechniques(this);
var mediumSudoku = new MediumSudokuTechniques(this);
var hardSudoku = new HardSudokuTechniques(this);
counter = GetTheCountOfClues();
while (true)
{
if (counter == 81)
{
break;
}
if (!easySudoku.UseAllEasyTechniques())
{
if (!mediumSudoku.UseNakedPairTechnique())
{
if (!mediumSudoku.UseNakedPairInBoxTechnique())
{
if (!mediumSudoku.UseCandidateLinesTechnique())
{
if (!mediumSudoku.UseX_WingTechnique())
{
if (!mediumSudoku.UseUniqueRectangleTechnique())
{
if (!hardSudoku.SolveSudoku(easySudoku, mediumSudoku))
{
//Should NEVER enter this if statement!
throw new ArgumentException("Problem with the sudoku!!!");
}
}
}
}
}
}
}
}
return(this.sudoku);
}
