If you’ve come across the mysterious Solurium puzzle in Blue Prince and aren’t quite sure what to do with it. This puzzle is hidden away behind a secret tunnel and offers a reward for those who manage to crack it. In this guide, we’ll walk you through how to find the puzzle, solve it step-by-step, and claim your prize, an Allowance Token that gives you a daily gold bonus.
How to Find the Tunnel puzzle in Blue Prince
The tunnel is a room you can add to your mansion, but first, you’ll need to find its build plans. To get them, head outside from the Entrance Hall. Follow the pebbled path straight ahead and go down the white staircase. Once you reach the bottom, take a sharp right, you’ll see a dark passageway blocked by crates.
Make sure you have a Burning Glass with you, then head into the passage. Inside, you’ll find two torches. Use the Burning Glass to light at least one of them, and the secret tunnel floor plan will appear at the end of the corridor. Once you have the plans, you can draft the tunnel into one of the mansion’s perimeter blocks. Enter the newly built tunnel, and at the far end, you’ll come across the puzzle box.
How to Solve the Tunnel puzzle
The goal of the puzzle box is to move a specific colored tile into each of the four corners of the 3×3 grid. Once you’ve placed the correct color in all four corners, click the heart-shaped buttons pointing toward each corner to lock them in. When all four corners are locked, the secret puzzle box will open.
To solve the puzzle box, just follow these steps:
- Start by clicking the black tile to slide the top row to the right. This will move the purple tile to the far left.
- Now, click the tile in the middle of the left column, it’ll turn purple.
- Click the black tile again to slide the top row to the right once more.
- Tap the tile in the top-left corner to make it purple.
- Click the purple tile on the middle left.
- Then tap the purple tile in the top center.
- Click the top-right corner tile, it should now be purple.
- Tap the purple tile on the middle right.
- Click the purple tile on the center-left side.
- Tap the purple tile in the bottom-right corner.
- Now click the purple tile at the bottom center.
- Press the center purple tile twice.
- Press the top-left purple tile twice.
- Tap the top-middle purple tile once.
- Press the top-right purple tile twice.
- Press the middle-right purple tile twice.
- Click the middle-left purple tile three times.
- Press the middle-right purple tile four more times.
- Finally, click the heart-shaped buttons in all four corners to open the puzzle box.
Solving the puzzle box rewards you with an Allowance Token. This gives you a permanent perk, starting each new day with an extra 2 gold coins in your pocket. To activate the bonus, you’ll need to end the current day and move on to the next one.
