The YJ Tianyuan O2 Cube V1 is actually a shape modification of a regular 3×3 cube, but where only the middle layers can be turned. The puzzle differs from YJ Tianyuan O2 Cube V2 in that the edges of the ball are hidden when you are not turning the puzzle, and differs from YJ Tianyuan O2 Cube V3 in that the corners cannot be turned. Thus, you will benefit from your knowledge of solving only the centers of a 3×3 cube when you tackle this puzzle.
YJ Tianyuan O2 Cube V1
The YJ Tianyuan O2 Cube V1 is the first cube in the series of puzzles from YJ that all resemble a cube with a ball inside that can spin independently from the outside of the cube. “V1” in the name can also be interpreted as a degree of difficulty, where YJ Tianyuan O2 Cube V1 is the easiest to solve out of the three puzzles that make up the series. The puzzle itself is surprisingly easy and smooth to turn, with a stable and high-quality feel.