Dumb bragging story. A friend needed to get a large couch through a narrow hallway and through a narrow doorway. After initial defeat, I explained to my friend what we must do. It was slightly convoluted, but as I explained during the second move what must be done, we got it though without damage to the couch, walls, or door frame. I amazed my friend with my 3D skills. I would definitely beat Kahn in a space war, and probably even Kirk.