Represents a cell in a Sudoku puzzle.
Represents the position of a cell within the Sudoku grid.
The column index of the cell in the Sudoku grid.
Indicates if the cell contains an incorrect value.
Indicates if the cell is part of the original puzzle (immutable).
The row index of the cell in the Sudoku grid.
The correct solution value for this cell.
The current value of the cell. A value of 0 indicates an empty cell.