A few weeks ago I wrote about GyroCube and was just plain wrong. I though that the cube could not be rotated and that in order to solve it, one must memorize the unseen portions.
The reason I thought that was the case was because I held my ipad in a stationary position. In fact, the ipad should be rotated in all dimensions to see everything.
I still haven't solved it, but marvel at the concept and implementation.