How to solve the Golden Piano puzzle in Deltarune

Deltarune Chapter 4 introduces an intriguing musical challenge—the Golden Piano puzzle. Unlike background tracks, this piano takes center stage, requiring players to uncover hidden musical clues scattered throughout the Dark Sanctuary. If you're struggling to solve this mystery, our step-by-step guide will help you unlock Deltarune’s secret boss!

Where to Find the Golden Piano in Deltarune Chapter 4

Before attempting the puzzle, you must first locate the Golden Piano. Here’s how:

Progress through Chapter 4 until you obtain the climbing gear, which is essential for accessing new areas.

Head to the Old Man’s Library, a labyrinthine area filled with bookshelves and puzzles.

From the Old Man’s study, follow these steps:

• Go up the stairs through the open doorway.
• Turn left before moving north through the narrow library section.
• Solve the blue piano puzzle by pushing the blue bookshelf into the marked square.
• Cross the path created by the bookshelf and enter the next room.
• Climb the bookcase to reach the Golden Piano.

Warning: The Golden Piano is missable—if you progress too far in the story, you may get locked out.

How to Solve the Golden Piano Puzzle

To play the Golden Piano correctly, you must find three hidden musical arrow sequences in the Dark Sanctuary. Each sequence is tucked away in a different location, requiring exploration and puzzle-solving.

1. First Arrow Sequence: Light Puzzle Tower

Location: Opposite the "Jockington Grows the Beard" room.

Steps to Find It:

• From the Old Man’s study, exit left and pass the blue piano.
• At the three-way intersection, go south, then turn right down the staircase.
• When you see two bookcases and a stool, head left into a hallway with blue light switches.
• Navigate past enemies in a zigzag pattern until you reach a climbable tower.
• Ascend the tower, defeat the watercooler enemy, and claim the first sequence:
  • "Up, dot, up, left"

2. Second Arrow Sequence: Maze Tower

Location: Left of the Old Man’s library.

Steps to Find It:

• Return to the two bookcases and stool, then turn right into a dark hallway.
• Follow the path until you find a large tower to climb.
• Inside, move north, using the pulsing blue light to avoid obstacles.
• The second sequence awaits at the end:
  • "Down, dot, right, dot"

3. Third Arrow Sequence: Hidden Waterfall Maze

Location: Behind a waterfall in the Old Man’s library.

Steps to Find It:

• In the narrow bookshelf room leading to the Golden Piano, turn left instead of going north.
• You’ll find a hidden door behind a waterfall—enter it.
• Traverse the maze by following blue light pulses and pressing golden buttons.
• The final sequence is at the end:
  • "Right, down, left, dot"

Playing the Golden Piano – Final Solution

Combine all three sequences to get the full code:

"Up, dot, up, left, down, dot, right, dot, right, down, left, dot."

Input this sequence on the Golden Piano to unlock a secret door in the Old Man’s study. Inside, you’ll find a special weapon that triggers a hidden boss fight.

What Does the Golden Piano Unlock?

Successfully solving the puzzle grants access to Deltarune Chapter 4’s secret boss. Without spoilers, expect a challenging battle with unique mechanics. Prepare accordingly!

Final Tips for Solving the Golden Piano Puzzle

✅ Don’t progress too far—stay in the Dark Sanctuary until you solve it.
✅ Use the blue light in mazes to navigate safely.
✅ Defeat enemies carefully—some areas have high encounter rates.

Now that you have all the clues, go forth and conquer Deltarune’s Golden Piano puzzle!

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