In the fourth chapter of the retro RPG journey, Deltarune, you take on the role of Kris who ventures into the Dark World alongside Susie and Ralsei to seal a Dark Fountain. During this journey, you encounter various Darkners, including an enigmatic old man with a vast study and unusual behavior.

As you navigate through what appears to be a mansion's corridors, you'll face several piano-based puzzles that allow you to shift bookcases when played. By positioning these bookcases correctly, you can access areas that were previously out of reach.

How To Solve The Pink And Green Piano Puzzle

Within the northwest section of the old man’s study, there is a room that leads into a puzzle-filled area. From here, move completely northward, passing a small library and a puzzle involving a blue piano, until you reach a corridor with a northern exit. In this northern section, you’ll find a piano that must be played to unlock a gate. The first piece of the puzzle is located in a room all the way to the far right of the hallway.

You may notice certain climbable spots along the walls. However, you’ll need a special tool for that, and solving the pink and green piano puzzle brings you one step closer to obtaining it.

Upon entering the eastern room, you’ll come across a piano that is half pink and half green. Since this puzzle is quite tricky, Ralsei will offer assistance in solving it. Still, if you choose to solve it yourself, you’ll be rewarded with a treasure chest located at the bottom of the room.

Interact with the piano to begin playing. You can press C on your keyboard to toggle between colors. Then, use the arrow keys to control the movement direction of the bookcase and press Z to move it forward. Before completing the puzzle itself, aim to collect the chest at the bottom.

• Move the pink bookcase entirely to the left.
• Shift the green bookcase to the left, then push it upward until it meets the pink bookcase. After that, push it to the right, then downward.
• Switch back to the pink bookcase and push it downward, then move it to the right until it meets the green bookcase.

Once the bookcases are in place, you’ll be able to walk across them and collect the treasure chest for a reward. Afterward, go back to the piano, complete the puzzle, and proceed to the room in the northeast corner.

• Move the pink bookcase upward, then to the left, returning it to the upper-left corner.
• Take control of the green bookcase and push it upward.
• Switch back to the pink bookcase and move it to the right.
• Finally, control the green bookcase again and push it downward, then left, followed by up, and finally to the right, so it lines up next to the pink bookcase.

With the puzzle completed, you can now cross the shelves and retrieve the second half of the piano piece in the next room.

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