Ravensburger Krypt Black 736 Piece Challenge Jigsaw Puzzle for Adults - 12000054 - Handcrafted Tooling, Made in Germany, Every Piece Fits Together Perfectly

My wife began this puzzle and enjoyed it enough that when my dog ate a few of the pieces, I bought a second one so that she could continue.

I haven't yet put this one together. This one took a bit longer to relieve than the first. It shipped from Germany.There was a slight delay in shipping, I was given the option to cancel my order or wait. I chose to wait. Glad I did.

Gave it as a gift to mother and she loves it

One of the most challenging puzzles I have ever done! I persevered to complete it, but it took a while.

A gift for my puzzle loving sister. I laughed while ordering it thinking it’s going to be so difficult. She spent days on it but was able to complete it

I enjoyed this puzzle a lot. My wife and I typically attempt many under 2000 pieces so I was happy to find a smaller puzzle that was still challenging.Unfortunately I let the excitement get ahead of me and preemptively purchased a 20x27 inch frame. After I finished the puzzle I opened the frame and found out that my puzzle is NOT the listed size and will not fit in the frame as it is too long on one side.Note that the box does say "approx" above the inches measurement but even the Amazon listing shows the incorrect size more than once. I'm still satisfied with the puzzle, just not thrilled to have to find another frame.

All one color, so solving the puzzle is based on shapes. Definitely more challenging than standard puzzles, but that makes the solving all the more rewarding.

EDIT: This is MY review as a paying customer. I am NOT a fan of puzzles, at all. My elderly mother however, is. I purchased this puzzle for her for Christmas as a project for us to work on together considering the challenge. Upon first sight of the puzzle box, my mother was pretty disappointed not to see her usual barns and lighthouses. But once we started in on the very first pieces, she enjoyed it thoroughly and actually turned it into something competitive with who finds the most pieces each day. And as for me, the one who despises puzzles, had a BLAST with this! So if you're not a fan of puzzles, don't let the 'puzzle' factor steer you away. This is unlike any other puzzle out there, if you're up for the challenge. Puzzle was completed in 25 days. The craftsmanship is undeniably the best when it comes to puzzles. If the piece is correct, it'll fit in like melted butter. Even if you think the piece fits and looks right, if it didn't go in place like melted butter, then it's the wrong piece. 'Melted butter' is the best way to describe it. I highly recommend!