[1] It was initially produced by Shapeways in 2009 and known as "Caution Cube" due to the likelihood of getting one's fingers stuck between the gears while speedcubing.

[4] While looking rather formidable at first sight, it is nevertheless simpler to solve than the original Rubik's Cube.

The first goal is taking the mixed-up puzzle back to its original cubic state.

The second goal is to actually solve the puzzle by arranging each side back to its own beginning color.

Due to the gears not making full rotations along with the sides they are attached to, 90° turns are impossible.

They are connected by a three dimensional cross with screws and springs allowing for adjustments in tension.

However, if the prime symbol is absent after the letter, that move must be rotated in a clockwise fashion.

There are only two algorithms needed to solve the cube, so finding the patterns is a key skill.

- Orientate the cube so those two edges are on the top side (upper-front and upper-back) and complete the following algorithm: (R2 U) 2.

Step 3, only for the Gear Cube Ultimate: To rotate two stickers on the top side (upper-front and upper-back) use the following algorithm: R2 U2 R2 U2 R2.

Taking away the middle layer cogs and replacing them with standard edges allows for different movement between rows.

A common issue while solving this cube is having the entire puzzle complete except for the newly added stickers being mismatched with different sides.