My husband claimed to love ‘the hardest puzzles possible’ but after the first box, he thought it would be better to drop down a level so he could actually solve it! Now we switched to the Explorer which works great for him!

Love this puzzle and the quality! The puzzle is very challenging to assemble since all pieces look alike.

This appeared a lot harder than it really was. But I appreciated the fact that it was pure topology. It wasn't a matter of metal fitting into specific gaps or anything. If you can visualize the goal without all the obstacles in the way, you can visualize how to overcome those obstacles. There's no trick, no "thinking outside the box" needed. Just thinking through "in order to get it past A, I need to get it past B; but to get it past B I need to get it past C" and so forth. It can get complicated if halfway through the solution you lose track of what you're doing. If you're not careful about keeping the string relatively tangle-free, it can look like a real jumble. This was so much fun without being unnecessarily frustrating. Keep your wits about you and you will succeed!

We ordered 25 sets as client gifts for our office (with our logo) and they were a huge hit. Max was super helpful and easy to work with. The whole process was smooth from start to finish.

This is a great puzzle and I really like its name too!

The pieces move smoothly and it's really fun to play with. Honestly, I'm not sure if I'll solve it anytime soon.

Made a great gift for a puzzle nerd!

Very challenging puzzle even for my genius friend. Also, a nice piece to display

Love this company! Great puzzle for the puzzler in your life.

My new obsession!

Simple but challenging at the same time!

Simple but challenging at the same time!

Classic puzzle in an amazing new look :)

Probably my favorite puzzle from Stewart Coffin. I love showing it to people who aren’t familiar with these puzzles and I think it’s a great example of what makes them so special and unique.

It made a great Christmas Gift.