static void Main(string[] args)
{
SudokuWriter sudokuWriter = new SudokuWriter();
ImmutableSudokuGrid filledGrid = sudokuWriter.CreateFilledGrid();
filledGrid.PrintGrid();
Console.WriteLine("\n");
ImmutableSudokuGrid emptiedGrid = sudokuWriter.EmptyGridForHardSolve(filledGrid);
emptiedGrid.PrintGrid();
Console.WriteLine("\n");
SudokuGrid mutableEmptiedGrid = emptiedGrid.MakeMutableCopy();
SudokuSolver sudokuSolver = new SudokuSolver();
sudokuSolver.Solve(mutableEmptiedGrid);
mutableEmptiedGrid.PrintGrid();
if (mutableEmptiedGrid.FindAllEmptySquares().Count != 0)
{
Console.WriteLine("\n");
HarderSudokuSolver harderSolver = new HarderSudokuSolver();
ImmutableSudokuGrid solvedGrid = harderSolver.Solve(emptiedGrid);
solvedGrid.PrintGrid();
}
}
private ImmutableSudokuGrid EmptyGridForHardSolve(ImmutableSudokuGrid inputGrid, HarderSudokuSolver solver)
{
ImmutableSudokuGrid grid = EmptyGridForSimpleSolve(inputGrid);
var listOfFilledSquares = grid.FindAllFilledSquares();
for (int i = 0; i < listOfFilledSquares.Count; i++)
{
var square = listOfFilledSquares[i];
bool isNotUniqueValue = solver.CanBeSolvedWithDifferentValueInSquare(grid, square, grid.Elements[square.Row, square.Column]);
if (!isNotUniqueValue)
{
grid = grid.WithoutSquare(square);
return EmptyGridForHardSolve(grid);
}
}
return grid;
}
static void Main(string[] args)
{
Console.WriteLine("Do you want me to try and solve an Easy Sudoku (type 1) or a Very Hard Sudoku (type 2)?");
string difficulty = Console.ReadLine();
if (difficulty == "1") { difficulty = "Easy" ; }
else if (difficulty == "2") { difficulty = "VeryHard"; }
else
{
Console.WriteLine("Stop being difficult. I'm going to solve an easy one then...");
difficulty = "Easy";
}
ImmutableSudokuGrid grid = new ImmutableSudokuGrid(@"..\..\..\" + difficulty + @"Sudoku.txt");
if (grid.Elements == null)
{
Console.WriteLine("Error, cannot read grid from file.");
return;
}
HarderSudokuSolver sudokuSolver = new HarderSudokuSolver();
sudokuSolver.Solve(grid).PrintGrid();
}
private ImmutableSudokuGrid CreateFilledGrid(HarderSudokuSolver solver)
{
ImmutableSudokuGrid sudokuGrid = new ImmutableSudokuGrid();
return solver.Solve(sudokuGrid, true);
}
private ImmutableSudokuGrid EmptyGridForHardSolve(ImmutableSudokuGrid inputGrid, HarderSudokuSolver solver)
{
ImmutableSudokuGrid grid = EmptyGridForSimpleSolve(inputGrid);
var listOfFilledSquares = grid.FindAllFilledSquares();
for (int i = 0; i < listOfFilledSquares.Count; i++)
{
var square = listOfFilledSquares[i];
bool isNotUniqueValue = solver.CanBeSolvedWithDifferentValueInSquare(grid, square, grid.Elements[square.Row, square.Column]);
if (!isNotUniqueValue)
{
grid = grid.WithoutSquare(square);
return(EmptyGridForHardSolve(grid));
}
}
return(grid);
}
private ImmutableSudokuGrid CreateFilledGrid(HarderSudokuSolver solver)
{
ImmutableSudokuGrid sudokuGrid = new ImmutableSudokuGrid();
return(solver.Solve(sudokuGrid, true));
}
public void InitializeTests()
{
sudokuSolver = new HarderSudokuSolver();
}