static public void puzzle(Image<Bgr, byte> img, Image<Bgr, byte> imgCopy, out List<int[]> Pieces_positions, out List<int> Pieces_angle, int level)
        {
            Pieces_positions = new List<int[]>();
            Pieces_angle = new List<int>();

            Dictionary<int, double[]> obj_list;
            Dictionary<int, double[]>.Enumerator Enum;

            // Labeling of existing pieces
            int[,] labels = ImageClass.Classification(img, true, false);

            if (labels != null)
            {
                // Get a list of existing pieces properties according to their label
                obj_list = ImageClass.FindCorners(labels, img.Width, img.Height);
                Console.WriteLine("Pieces Labeled");

                // Rotate the pieces that require it.
                ImageClass.RotatePieces(img, imgCopy, labels, obj_list);

                // Merge all the pieces
                Image<Bgr, byte> img_aux = img.Copy();
                ImageClass.JoinPieces(img, img_aux, obj_list);
                Console.WriteLine("All Pieces Merged");

                img_aux.CopyTo(imgCopy); // DEBUG

                // Finish - Update out parameters
                Enum = obj_list.GetEnumerator();

                int[] sqr;
                double[] piece;
                while (Enum.MoveNext())
                {
                    piece = Enum.Current.Value;
                    sqr = new int[4] { (int)piece[0], (int)piece[1], (int)piece[2], (int)piece[3] };
                    Pieces_positions.Add(sqr);
                    Pieces_angle.Add((int)piece[4]);
                }
            } // End of Label != null
        } // End of Puzzle