/// <summary>
/// Defines a monadic transformation List[Option[X]] -> Option[List[X]]
/// that returns the value of the list if all items are valued; otherwise,
/// returns None
/// </summary>
/// <typeparam name="X">The item type</typeparam>
/// <param name="list">The list of options to transform</param>
/// <returns></returns>
public static Option <Lst <X> > flip <X>(Lst <Option <X> > list)
=> list.Any(item => item.IsNone())
? default : list.Select(x => x.ValueOrDefault());
private bool CheckLineWiner(Shapes shape) => Cells.Any(row => row.ForAll(c => c == shape));
