Great idea !I tried to solve each puzzle without using cheats (Yes I'm that kind of guy :P )I could not do it for some of them (yeah. I gave up and cheated ! :O)Did you actually design it so you can possibly do it or am I just a fool ?Good job !
Good on you for going for the honest plays!
We did design the courses such that it would be impossible or nearly impossible to not cheat. I think it's funnier that way.
Also, to make the mechanics clear in the tutorial levels, we thought it best to require the player to play in a particular way.