I was able to figure out the rules of the game after a bit of trial and error, but for a puzzle game I would have liked to see the instructions and rule explained better.
The puzzles themselves are not very hard, I enjoyed it.
The music resetting every time you finished or failed a level is a little annoying though.
It would be much better for the game to stay on the puzzle once you complete a level so you can see thee results of the final puzzle state, which helped with understanding the game, instead of immediately show a results screen.