So, if you're an oldtime Wrebbit Puzz-3D lover, but are getting confused between the Wrebbit 3D and Puzz-3D puzzles from Winning Solutions, here's the story as I understand it. The original Puzz-3D foam puzzles were created by a company in Montreal called Wrebbit. They created a lot of puzzles throughout the '90s, and were eventually purchased by Hasbro in 2005. Hasbro took over the manufacturing and moved it to the US, and then in 2006, they discontinued the line. In 2011, the Hasbro line was brought back into production from Winning Solutions, and they've been reprinting the older designs ever since.However. Back in Montreal, all the old employees and original Puzz 3D designers reformed the Wrebbit company in 2012, and these new Wrebbit 3D puzzles are theirs. Their emphasis is on larger and more complex puzzles, so if these might be too challenging for you, the older classic designs from Winning Solutions may be more your thing. :)I'm typically happier with 3D puzzles with a 500-700 piece count, as I prefer a puzzle I can put together and take apart in a single sitting. And when I opened the box on the Taj Mahal, I wasn't sure I was up to putting it together, as this is a significantly larger Wrebbit than I've put together solo before. But the old familiar initiation rite of pulling out all the red-dot printed pieces soothed me. For those wondering what the complaints are all about--Wrebbit doesn't separate out all the "waste" pieces from the cutting, as this would add significantly to the production costs (and these aren't cheap puzzles to begin with). So, you do have to pull some of the spaces out from between the "dovetail" edge teeth, punch out a few of the smaller holes (I missed quite a few the first pass through for the interior cardboard support tabs) and clear away the waste pieces that didn't separate. When I was done, I'd pretty much filled up an entire 1 gal. ziploc baggie with "waste" pieces, and if you aren't meticulous about this, you can accidentally toss a real piece in with the waste ones. It took me roughly an hour, but as I said, I'm an old hand at this, and I find it soothing, like knitting; and the idea that it's a initial-use-only deal makes it easier for me to get through. YMMV. Wildly.Putting the puzzle together is generally in two stages: you put together the model pieces (borders are typically delineated by square-wave notches for dovetailing edges together or straight lines or curves with no breaks in them). And then you take all the "model" pieces and create the 3D structure. Wrebbit does supply a printed "plan" for assembly, which will actually show each individual puzzle piece's position within the "model" pieces, as well as how the model pieces are meant to assemble together.One of the possibly more frustrating or helpful features of these Wrebbit puzzles is that they are engineered to only be assembled in one way. Despite seemingly symmetric features, the size of tabs and holes will be geared so that assemblies can only be oriented or slot together a single way. If a fit seems to be "off", you're probably trying to put the wrong pieces together and need to substitute a similar piece or rotate something. I find the printed plan to be a good "cheat sheet" to keep from getting too frustrated--the four corner towers in particular could have taken me a lot longer, if I hadn't just laid out all the pieces as they were on the plan, and then assembled them that way. Those damn towers were actually what took me the most time on the puzzle and were the last thing to go in. The central dome, palace, and courtyard bits were the easy part. :) You do have to be detail-oriented when looking at fit--the printed pattern will always match exactly. The foam edges can be forced into false fits very easily, but it's usually pretty self-evident when you've gotten it wrong.The dome did stymie me a little at first, as I'm used to assembling "model" pieces flat. These pieces actually only cleanly lock together when the surface curves appropriately. Once I realized how the pieces were supposed to curve, it was relatively easy to get everything to be in the right shape, but I fold origami, too, so this kind of "sculpting" of flat surfaces into 3d shapes isn't particularly tough for me.My only real complaint about the puzzle is that there are some unavoidable points of fragility on it. The small pointy turret pieces on the main palace are particularly fragile--held into place by very small jigsaw piece joins, and the inner cardboard supports are relatively thin and will probably need to be stored with care in the box for future reassembly. I'd have preferred tougher plastic pieces, but can see that would increase the cost appreciably.All told, it probably took me about a dozen hours to put this puzzle together by myself, and the frustration level was bearable :). I only gave it 4 out of 5, because I was still frustrated enough to put it away at times, and because I needed to leave room for that fifth star if Wrebbit ever recreates (or Winning Designs reprints) my favorite of the old Puzz-3Ds: the double-sided Sistine Chapel, where you could take the roof off and look at the ceiling. :D Still. Very very nice to have Wrebbit back and making new puzzles.