Very difficult to assemble due to its size. The only negative aspect and the reason I deduct one star is that the puzzle's photo does not correspond closely to reality. The colors and distances are different in some areas. The same distance in one area may require up to 4 pieces in another area, making it even more challenging to assemble. Additionally, it appears gray in color but ends up being dark green. These inaccuracies may be helpful for those of us who want to spend months working on it, but in general, it's something you don't expect to such a high degree.