private void StorePreviousTurn()
{
_redoTurns.Clear();
int[] array = new int[CellValue.Length];
CellValue.CopyTo(array, 0);
_previousTurns.Push(array);
}
public void GoBack()
{
if (_redoTurns.Count == 0)
{
int[] array = new int[CellValue.Length];
CellValue.CopyTo(array, 0);
_redoTurns.Push(array);
}
if (_previousTurns.Count > 0)
{
int[] replacement = _previousTurns.Pop();
replacement.CopyTo(CellValue, 0);
_redoTurns.Push(replacement);
}
}
