This was certainly one of the harder of puzzles to piece together. It really needs a poster, the box picture is way too small to see any kind of detail. Many colors and patterns are similar, especially along the edges where the differences are very slight. Puzzle shapes are interesting and unique which helps in putting them together, finding the middle pieces was easy as there is an actual middle piece and then it radiates outward in a curved circle. After getting about 70% of the puzzle done it went pretty quickly. We, mostly me, put a month and a half into getting this one done with an hour or two dedicated here and there. Ended up having one missing piece, not sure if it was lost in the house or if it was actually missing from the box. Hmmm? Neat puzzle.