Olivér Nagy wrote:
All the edges, corners and centers have only one correct orientation, witch makes it harder to solve than a normal 3x3, because on a normal 3x3, the centers have more than one correct orientation.
You can run in to 3x3 supercube parity.
On normal Barrel the middle layer edges can be in 2 orientations, what effect on the solution. At the end, you may get a parity. To solve this, you need more turns than just orient the centers. (8 turns / 2 center).
In this version you only get center orientation problem. (what you can't get on normal Barrel)
So let's say, both kind of sticker variations of this puzzle are harder to solve than a normal 3x3x3, and both has it's unique solution.