So this is just a shape modification of the standard LanLan 3x3x2, which is already a puzzle with many flaws. Since the puzzle uses a ball mechanism instead of a proper core, the puzzle is prone to catching/locking up. With the standard version of the puzzle, it's manageable since the puzzle is squared off. But with this rounded design, you have to be much more deliberate when you're lining things up before a turn, which just takes away from the puzzle solving experience. You're better off just buying a standard 3x3x2, unless you just really want a barrel-mod version.