Played the game from beginning to end and had no need for brute force. Most of the levels were pretty easy. I only had to restart the last level twice because I made the same mistake twice.
I like the game. It isn't too hard or too easy. It is just right. You have to play it again and again to become better and that you will. And so it isn't like other games where it gets boring because you have to do the same thing over and over again without changing anything or getting better.
At least that is what I experienced. But I won't play the last level because I will likely never ace all other levels. Still 5/5.