The GearShift is quite a striking puzzle. With just four gears, which complete an image of an Ouroboros, you'll be puzzled for a while trying to put it together.

Although not exactly the same, the concept is similar to Constantin's Modern Times, where you also had to spin four gears to create a pattern. The idea in these puzzles is that the cogs in the gears don't complete an entire circle. There are gaps which allow them to rotate independently from the other gears at certain positions. With these movements you'll be able to recreate the original pattern. Sounds easier than it actually is.

Although the puzzle is made from plastic, the movement is surprisingly smooth. The hardest part is definitely the solving process, which will take some practice. You have to figure out how all the gears interact with each other and at what points they can be rotated independently. Understanding this logic is the key to solve it.

I did find it quite challenging, since you have to be very careful not to mess up what you already did while trying to get the other gears in place. Sometimes you need to undo what appears to be a half solved puzzle so that the other gears can be rotated. It might feel a bit frustrating at first, but with patience you'll eventually solve it. It has a difficulty level of 8/10, and I think it's a correct classification. It's a difficult puzzle, but by no means impossible to solve.

Closing Comments:

This is puzzle you can solve multiple times and still have fun every time. Even if you're not attempting to solve it, just playing with it is quite stress-relieving. There's also another version with Disney characters.

Availability: You can get your GearShift at PuzzleMaster for just $19.99 CAD.