I love Artifact Puzzles in general, but this one in particular. It is quite unique in design and very challenging, despite the regular rectangular edge. Many of the pieces have flat sides, so it isn't obvious whether the piece is an edge piece or not and when it is complete- there are actually two puzzles, side by side mirroring one another to some degree. This puzzle requires more time and effort than the smaller puzzles. I loaned one of my smaller ones to a friend's sister and she complained that she was able to figure it out in less than two hours and wanted a harder one, so I loaned her this one. She needed her parents and her brother's help with it and it took them over a week to do it (not every moment of every day, but when they had free time). Her brother said that next time, she would like one in between in difficulty. So if you like difficult, challenging puzzles, this one is for you! The quality is excellent and I've never seen a cut that resembles this one. There are many jaguars and tricky pieces that are not obvious.