Puzzle's I've never solved
1. Rubik's Revenge
The 4x4x4 version of Rubik's cube. Too complicated.
2. Square-1
Looks like a Rubik's cube, but it's got diagonal cuts in
it. I'm usually happy if I can get it back to it's cubical
shape - getting the colors right is too hard.
3. Women
Unsolvable.