Professor PUZZLEThe Einstein Collection Einstein’s Fish/Metal Entanglement Puzzle/Interlocking Brain Teaser 3D Brain Teaser Puzzle

The lock arrived on time and is as described. I've attempted to unlock it several times, and I have yet to do so. I'm usually very good with puzzles, and they don't last long. This one, however, has me stumped. There seems to be only so many positions the pieces can be placed, and none of them so far has solved this puzzle. I've set it aside for the time being, but think I might have an answer. We'll see. Based on the product I've received, I would highly recommend this puzzle.Edit: Apparently, I did solve this a few times and didn't realize it. For some silly reason, I thought all the pieces had to came out. Oops. Actually you are just supposed to open it like a lock would open. Meaning it just head to come up to the point that looks like any lock would when opened. This doesn't detract from the product. I love it. Just thought I didn't solve it, but did. Have fun!

Great, real fun, but very easy to break, this is not a durable product. After solving this puzzle in like two to three minutes, I decided just to admire it, and show it off, I saw how the wood was already deteriorating and cracking the more people kept trying to solve it, and no one was going hard on it, every hand that touched the puzzle was being careful and gentle, heck some were talking their time song how easily it could be broken and all. Over all it's more of a visual piece, not much of a puzzle, very beautiful, my only gripe is the durability.

I like the Atom puzzle. Made of wood, and, it's two puzzles in one. The center sphere is a puzzle ball I used to have a long time ago. Nice to have it back.

High quality, good-looking piece. This puzzle is nice enough to be on display in the living room but also packs up nicely in the box. The puzzle is nothing that you couldn't create on your own without spending the $, but the high-quality pieces makes it a visually fun puzzle to solve for kids.

I bought this for my wife who loves logic puzzles. She solved it in about 15 minutes. We looked to see if there were other riddles using the same pieces, and there are none, which seems like a lost opportunity. The quality is superb, but the challenge and replayability is ultimately lacking.

Very simple puzzle great for kids

I’ve had this for quite some time and yet I have not had taking time to look into it very much I have other puzzles that I’m doing and I will eventually get to this but it looks great

Kept us all busy during this quarantine. Everyone keeps trying to figure it out. It’s a great way to take a work break.