This Puzzle has over 220 pieces cut in a diagonal grid. The edge pieces are almost all triangular and do not connect to each other, but only to middle pieces (except at the corners.) Not only that, but there are "edges" in the middle! This puzzle has a couple whoops, the most significant being the signature tree piece (which was cut too clost to the corner and too narrow. It will be glued to the piece next to it for stability, but does not affect the appearance of the completed puzzle. There are no other special pieces.