The idea is incredible and the execution is also very good. But yeah, seeing the gif of the last level, I don't recall getting a tip that the "not" command exists. Not only that, but there are some typos and other mistakes on the tips at the start of each level. If those tips were better written, the game would be far better.
But yeah, other than that, you have a very interesting concept. Both on an entertaining perspective and on an educational one. Congratulations!