When I was a kid we only had six faces with nine stickers. I figured it out in high school and yes sometimes I cheated and took it apart and put it back together. Now they make them bigger! This one is 7 x7x 7. WTF? Watch my friend Evan complete it in 20 minutes (I sped up the video, so as not to bore you.)
****Wikipedia explains: "The puzzle consists of 218 unique miniature cubes ("cubies") on the surface. Six of these (the central tiles of the six faces) are attached directly to the internal "spider" frame and are fixed in position relative to one another.
I'm sure my brain would grow younger if I took the time to figure this out. I guess you can prevent Alzheimer's and actually keep your muscles younger by solving difficult puzzles or learning a new language. I think I'll just brush up on my Spanish.