This is my transformation of a genuine 6x6x6 V-Cube. It was inspired by my own Ball in a Cube puzzle as well as my Sliding Pucks.
I have always wanted to use the interior 6x6x6 pieces as parts of a puzzle that need to be solved. In addition I like the fact that often the parts are hidden from view like the sides of my Sliding Pucks.
The puzzle behaves like a kind of bandaged 7x7x7 with some pieces that are not always visible. Cubies can be mixed in two ways. They can be moved around the cube in groups like a giant 2x2x2. To mix them further though all cubies must be on one half of the cube. This then allows three complete rows to rotate. Switching between these different types of moves is the only way to fully mix or solve the puzzle.
The white 'inside' pieces can move around the puzzle in groups of five like a single edge on a Rubik's Cube. To break up these groups though they must be under the cubies when those cubies are all in one half of the puzzle. Not easy to explain but the video will give you an idea.
I experimented with different designs and ideally everything hidden when the puzzle is solved should be white. It simply wasn't practical though to give such tiny parts two colours and I eventually settled with this.
Movement is quite stiff and popping happens occasionally if not careful. This is because the puzzle is a little unbalanced due to the removal of so many cubies. You have to be careful when a regular 1x6x6 layer is moved. Initially it was much stiffer but I rounded the V-Cube 'tabs' that prevent misalignment. For this puzzle misalignment doesn't matter so much.