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The Laboratory puzzle inBlue Princeis one of the toughest challenges in the game. You can pull every lever, follow every clue, and still hit a dead end. It’s tempting to skip it, but don’t. Tough puzzles like this are never worth avoiding, and in this case, the reward is definitely worth your time and effort.
This puzzle tests your problem-solving skills, patience, and even luck. In this guide, you’ll learn how to power the Laboratory machine, the meaning of the periodic tables, how to crack the Boiler Room puzzle, and get yourself a Permanent Addition!
Why You Need To Solve The Laboratory Puzzle
Solving the Laboratory machine puzzle in Blue Princeunlocks a Permanent Addition called Black Bridge Grotto.Once activated, it gives youdaily access to one offline terminal from the network.This means you’ll only need to find one room among the Laboratory, Office, Security, or Shelter, to connect to another terminal, saving you the steps and effort.
Blackbridge Grotto is especiallyuseful for theTime-Lock safe puzzle, since you no longer need to visit the Shelter every time to set the time and date.
It also helps if you haven’t solved theUtility Closet breaker box puzzle, as you can access Office terminals and read the required emails from elsewhere. You can even control in-house security systems without drafting the Security room and launch experiments from the Laboratory computer without needing the room itself.
How To Power The Laboratory Machine
To power the Laboratory Machine,you need to draft two roomson the same day:
The best-case scenario is tohave the Laboratory and Boiler Room directly connected, but that rarely happens since the manor’s layout constantly shifts. Luckily, there’s another option. You canlink these two rooms using other rooms that have steam vents on the ceiling. These vents allow steam to travel through connected ducts, making it possible to complete the puzzle even when the Laboratory and the Boiler Room aren’t adjacent.
The rooms that can transfer steam between the Laboratory and Boiler Room are:
Once you’ve successfully linked the Laboratory and Boiler Room, either directly or through steam-vented rooms, it’s time tohead to the Boiler Roomand start cracking the puzzle.
How To Activate The Boiler Room
To power up the machine in the Blue Prince Laboratory, you first need to activate the Boiler Room. Your main goal here is todirect steam from the green tanks up to the central control panel up high.The Boiler Room has two floors. Here’s what you’ll find:
Central control panel
On the upper floor. Thisactivates the machine to send steam to other rooms.The panel has three indicator dots representing the status of each green tank. When a tank is activated and connected to the system,a blue dot will light up on the panel.
Three green tanks
Two on the lower floor, and one on the upper floor. These are your steam sources.Turn their valves to release steam.
Two red pipes
Both of them are on the lower floor. You canrotate them to control where the steam flows.Depending on how you connect them, you can influence elements both inside the Boiler Room and in other areas beyond it.
Two blue switches
One on the lower floor, one on the upper floor. you’re able to find them along the pipes. They reroute the steam when flipped.
An elevator
It’s on the upper floor. you’re able to activate it by connecting the steam.
Now, let’s move on to activating the Boiler Room.
Once the green tanks are activated, you’ll notice steam fuming from them.
Step 1 - Activate The Green Tanks On The Ground Floor
As soon as you enter the Boiler Room, you’ll notice two green steam tanks.One has its valve in the open, so activate it.Now that steam is flowing from the first tank,rotate the I-shaped red pipe into a vertical position. This should connect the tank to the pipe leading toward the Y-shaped red pipe.
Next,rotate the Y-shaped red pipeso that:
This will get the conveyor belt moving.The second tank’s valve is hidden behind said conveyor.When you see the second tank’s valve appear between the conveyor’s gaps,cut off the steamfueling the conveyor by eitherdeactivating the active tank or rotating one of the two red pipes.Once the steam is cut off, you canturn the valve.
Step 2 - Activate The Elevator
Return to the I-shaped red pipe and rotate it horizontallyso that it connects to the pipe leading to the blue box near the elevator.
Next,head to the blue switchlocated between the two green tanks, opposite the two red rotatable pipes. Flip the switch to redirect the steam, allowing it to flow through the newly established pipeline and power the elevator.
Step 3 - Activate The Third Green Tank
Take the elevator to the upper floor. You’ll be in the middle of two paths: The one on the left leads you to the central control panel.The one to the right leads you toward the final green tank.Activate its valve. On the left side of the green tank, there’s the second blue switch. Flip it to lead the steam toward the central machine.
At the end of the path, you’ll see a rusty switch.Flip it to open the door nearby, it’ll come in handy later.
Step 4 - Connect The Pipes
Take the elevator to the lower floorand rotate the I-shaped red pipe vertically. Move to the Y-shaped red pipe, rotate it so that:
Doing so opens the bridge,connecting one side of the upper floor to the other, where the barred door was. It’s now open since you unlocked it by flipping the rusty switch earlier.
Then,flip the blue switch upto redirect the steam to the machinery in the center of the room. Once everything is connected,head up the stairs, cross the bridge, pass through the previously barred door, and follow the path until you reach the central control panel.
Step 5 - Activate The Boiler Room
You should now see three blue dots and a glowing ‘Activate’ button. Click it to start the machine.Make sure to check if the steam vents along the wall have turned blue.Ensure you redirect the steam to the vents that lead to your Laboratory or the room connected to it.Be careful and don’t send the steam to the wrong room.
Solve The Laboratory Periodic Table Puzzle
Back in the Laboratory, you’ll notice thatthe machine is now powered and glowing blue.
Find two periodic tables.One has only numbers, while the other is a complete, normal periodic table. If you have a Magnifying Glass, you’ll notice faint letters on the periodic table with the numbers, but it’s not required to solve the puzzle.
To begin, take the numbers from the code sheet in order and match them to the atomic symbols on the complete periodic table. This will reveal a hint: PuSHThReEuPaFTeRnINe, which means“Push three up after nine.”Use this order to flip the levers on the Laboratory machine.Flip the #9 lever up, then flip the #3 lever.
A cutscene will play, and you’ll receive theBlackbridge Grottoas a Permanent Addition.
