We've published an official complete puzzle walkthrough video on YouTube, showcasing a perfect clear on Normal difficulty, including the collection of every Core in every stage.

If you're aiming for a perfect clear but are stuck on a puzzle, or if you'd like to review the solutions after finishing the game, we hope you'll find it helpful.

Please note that the solutions shown in the video are just one of many possible approaches.

As you progress through the game, you'll unlock the Hold/Swap feature. However, a perfect clear can be achieved both with and without using it.

Give it a try and see if you can find your own solutions!