I’m glad you appreciate the feedback! Noted that the feature was intended for more difficult puzzles. I think that without clear and established rules for how your game mechanics work, players will rely on intuition based on the presentation of similar mechanics they’ve experienced in other games. Obviously a wall of tutorial text or hand holding isn’t ideal but I think it would make for an awesome challenge to solve - leading the player to understand why they cant paint the tile in the direction they are facing. Take an in depth look at the magic circle theory in game design if you haven’t already, might give you some pointers to solving this problem or similar problems that may arise in your future endeavours.