public void SetCellAtCoordinates(int row, int column, LetterAndArrowCell cell)
{
_grid[string.Concat(row, column)] = cell;
if (!RowsVisited.Contains(row))
{
RowsVisited.Add(row);
}
}
private bool HaveAlreadyVisitedRow(int row)
{
return(RowsVisited.Contains(row));
}