Thank you! I'm glad you liked the mechanics! I made level 3 intentionally more difficult to show how the meachanics of the game can be implemented to create puzzles not very obvious and more challenging (the first is a "tutorial", second introduces a new machanic and is a little more difficult and the third is to show how can the levels be real challeges). And I'm happy that you figured out how to make it :). I hope you had fun playing my game!