private Queue <SheepCard> ShuffleCards()
{
List <SheepCard> cards = CardUtil.UnshuffledList();
for (var i = Game.CARDS_IN_DECK - 1; i > 0; --i)
{
var j = _random.Next(i);
var swap = cards[i];
cards[i] = cards[j];
cards[j] = swap;
}
var queue = new Queue <SheepCard>();
cards.ForEach(c => queue.Enqueue(c));
return(queue);
}