private static Cups PlayTurns(Cups circle, int turnsCount)
{
int Prev(int n) => n == 1 ? circle.Count : n - 1;
for (int i = 0; i < turnsCount; i++)
{
var pickedUp = circle.ExtractNext3();
var destination = circle.FindNode(Prev(circle.CurrentValue));
while (pickedUp.Value == destination.Value ||
pickedUp.Next.Value == destination.Value ||
pickedUp.Next.Next.Value == destination.Value)
{
destination = circle.FindNode(Prev(destination.Value));
}
circle.InsertRange3(destination, pickedUp);
circle.MoveNext();
}
return(circle);
}