private bool ApplySolvers()
{
bool squaresSolved = false;
foreach (BaseGroupSolver sudokuSolver in solvers)
{
// Calling solve 27 times for all the rows, columns, and blocks.
for (int c = 0; c < 9; c++)
{
if (sudokuSolver.Solve(SudokuBoard.GetColumn(c), GroupKind.Column) == SolveResult.SquaresSolved)
{
squaresSolved = true;
}
}
for (int r = 0; r < 9; r++)
{
if (sudokuSolver.Solve(SudokuBoard.GetRow(r), GroupKind.Row) == SolveResult.SquaresSolved)
{
squaresSolved = true;
}
}
for (int r = 0; r < 3; r++)
{
for (int c = 0; c < 3; c++)
{
if (sudokuSolver.Solve(SudokuBoard.GetBlock(r * 3, c * 3), GroupKind.Block) == SolveResult.SquaresSolved)
{
squaresSolved = true;
}
}
}
}
return(squaresSolved);
}
private void ShowNotesForSquareAt(ISudokuSquare square)
{
ISudokuSquare[] column = SudokuBoard.GetColumn(square.Column);
ISudokuSquare[] row = SudokuBoard.GetRow(square.Row);
ISudokuSquare[] block = SudokuBoard.GetBlock(square.Row, square.Column);
List <char> availableChars = new List <char>();
foreach (char item in tbxAvailableCharacter.Text)
{
availableChars.Add(item);
}
RemoveCharactersFromGroup(availableChars, row);
RemoveCharactersFromGroup(availableChars, column);
RemoveCharactersFromGroup(availableChars, block);
square.SetNotes(string.Join(", ", availableChars));
}
bool CheckForConflicts(int r, int c, bool setHasConflictedProperty = true)
{
ISudokuSquare thisSquare = SudokuBoard.squares[r, c];
string text = thisSquare.GetText();
if (string.IsNullOrWhiteSpace(text))
{
return(false);
}
ISudokuSquare[] column = SudokuBoard.GetColumn(c);
ISudokuSquare[] row = SudokuBoard.GetRow(r);
ISudokuSquare[] block = SudokuBoard.GetBlock(r, c);
bool isConflicted = false;
for (int rowIndex = 0; rowIndex < 9; rowIndex++)
{
if (rowIndex != r && column[rowIndex].GetText() == text)
{
if (setHasConflictedProperty)
{
thisSquare.HasConflict = true;
column[rowIndex].HasConflict = true;
}
isConflicted = true;
}
}
for (int colIndex = 0; colIndex < 9; colIndex++)
{
if (colIndex != c && row[colIndex].GetText() == text)
{
if (setHasConflictedProperty)
{
thisSquare.HasConflict = true;
row[colIndex].HasConflict = true;
}
isConflicted = true;
}
}
for (int squareIndex = 0; squareIndex < 9; squareIndex++)
{
GetSquarePosition(block[squareIndex], out int blockRow, out int blockColumn);
if (blockRow == r && blockColumn == c)
{
continue;
}
if (block[squareIndex].GetText() == text)
{
if (setHasConflictedProperty)
{
thisSquare.HasConflict = true;
block[squareIndex].HasConflict = true;
}
isConflicted = true;
}
}
return(isConflicted);
}