black ops 6 – hidden piano door that opens by solving boiler puzzle

The safe house “Rook” in Call Of Duty Black Ops 6 is quite huge and has multiple secrets that you can uncover when you are feeling to take a break from the battlefield. Not only your combat prowess but your wit is also challenged.

The boiler room will be accessible and there will be a note on the table that you can read. The note will immediately raise the curiosity that the generator has some alternate purpose as the house has power. There is also a file from Marshall to Case about finding the hidden part of the house. So where is the hidden room that the boiler room generator is sending power to?

As per the note after translating,

“Turning on the pilot light with the fuel line fully open isn’t working. Reason unknown.
The boiler has a leak and won’t let the pilot light start. Best to fill the boiler with water once the flame is good and steady.”

Everything related to the boiler puzzle and which door it will open is listed in this small guide.

How To Open The Piano Basement Door At The Safehouse In Black Ops 6?

First and foremost, you will need the Blacklight to play the piano correctly and open the secret door that will lead to the basement. Once you have discovered all the clues and played the correct note on the piano, there will be a sturdy metal door welcoming you.

To unlock the door, all you need is to solve the Boiler room puzzle and let the generator do all the work.

How To Solve The Generator Puzzle At Boiler Room?

As per the note, all you need is to prevent the leak from all those pipes. Learning this, turn off all the valves i.e. Fuel, Boiler, and Pilot i.e. at the extreme left.

• First, change the regulator of the Pilot to the right side as it channels the power to the hidden piano basement door.
• Turn the Fuel valve initially to the point it is before the point of leakage i.e. middle.
• Turn the Boiler valve next, to the point it is before the point of leakage i.e. max.

Successfully performing the task will generate a green color on the panel and sound cue.

Go to the hidden door and it will be unlocked.