TomZ Constrained Cube 180

I've really enjoyed this puzzle. If you know how to solve a 3x3 you don't need any new algorithms - but it requires you to use your existing knowledge in new ways and think creatively about your approach to solving. It's a step up in difficulty from the 270 constrained cube, but still very doable. The cube turns well (although of course not at the level of a speedcube). Strongly recommended - a very satisfying solve.