Happy about the last level because I felt that diffculty was not really increasing, it was just longer. I know the point is to complete the level in the least amount of turns... But it's not like there is much room for improvement in the first levels, that's what I meant.
The concept itself is good. I backup what @hwkeyser says, with more levels, more gameplay elements like the moving target, it'd be great. If you ever plan on iterating on the game, don't hesitate to let me know, I'd be happy to try!
Nice job!
(you can be confident with this game, no need to doubt if people will enjoy it or not)