public static StateGraph CreateStateGraph(RoboBoard board)
{
  ICollection<Node<RoboField>> nodes = new HashIndexedList<Node<RoboField>>();
 
  for (int y = 0; y < board.Size.Height; y++)
  {
    for (int x = 0; x < board.Size.Width; x++)
    {
    
      nodes.Add(new FieldNode(Direction.Up, board.Fields[x, y]));
      nodes.Add(new FieldNode(Direction.Right, board.Fields[x, y]));
      nodes.Add(new FieldNode(Direction.Down, board.Fields[x, y]));
      nodes.Add(new FieldNode(Direction.Left, board.Fields[x, y]));
    }
  }
  
  StateGraph graph = new StateGraph(board, nodes);
  
  foreach (FieldNode node in nodes)
  {
   
    foreach (CardType cardType in Enum.GetValues(typeof(CardType)))
    {
      RoboPosition position = RoboManager.PlayCard(board, new RoboCard(cardType),
                    new RoboPosition(node.Field.X, node.Field.Y, node.Direction));

      if (position.IsDead)

        //der Hashcode des "Todesknoten" ist 0
        graph.AddDirectedEdge(node, graph.GetNode(0), cardType);
      else
        graph.AddDirectedEdge(node, graph.GetNode(position.GetHashCode()), cardType);
    }
  }
  
  return graph;
}