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How to Solve All Safehouse Puzzles in Call of Duty: Black Ops 6

A complete Black Ops 6 safehouse puzzle walkthrough, including fixed generator and piano answers and how to derive your randomized keypad and safe codes.
WorldCall of Duty: Black Ops 6 Length3 min Posted Quest giverVGSources Team
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To solve the Call of Duty: Black Ops 6 safehouse puzzle chain, activate the basement generator, play the piano sequence Mi, Re, Si, Do, Re, solve your randomized keypad and computer cipher, pick the lock, then use the radio’s object clues to find the four-digit code for the upstairs safe. The generator and piano answers are fixed; the keypad code and safe code vary by playthrough.

You can start the puzzles when you first reach the safehouse after the campaign’s opening mission. Begin in the basement boiler room, then follow the newly opened route from the piano room. This is a spoiler-forward walkthrough; the keypad and safe sections explain how to derive your own codes rather than reuse another player’s.

1. Activate the basement generator

Go down to the basement boiler room and use the controls in this order:

  1. Turn the middle boiler valve twice.
  2. Turn the left fuel valve once.
  3. Press the right pilot button once.
  4. Turn the middle boiler valve twice again.

An audible success cue signals that the generator is active. This also drains the basement and powers the door you will use after solving the piano puzzle. PowerPyx’s safehouse walkthrough and Shacknews’ guide document the sequence.

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#1 Best Overall
Call of Duty®: Black Ops 6 - PlayStation 5
  • Developed by Treyarch and Raven, Call of Duty: Black Ops 6 is a spy action thriller set in the early 90s, a period of transition and upheaval in global politics, characterized by the end of the Cold War and the rise of the United States as a single superpower.
  • This is signature Black Ops across a cinematic single-player Campaign, a best-in-class Multiplayer experience, and the epic return of Round-Based Zombies.
  • The Black Ops 6 Campaign provides dynamic moment-to-moment gameplay that includes a variety of play spaces with blockbuster set pieces and action-packed moments, high-stakes heists, and cloak-and-dagger spy activity. 
  • In a best-in-class Multiplayer experience, players will test their skills across 16 new maps at launch, including 12 core 6v6 maps and 4 Strike maps that can be played 2v2 or 6v6. 
  • Black Ops 6 also marks the epic return of Round-Based Zombies, the fan-favorite mode where players will take down hordes of the undead in two brand-new maps at launch. Post-launch, players can look forward to even more exciting maps and groundbreaking experiences dropping into both Multiplayer and Zombies.

2. Solve the piano puzzle

Pick up the blacklight near the piano. Use it on the nearby wall to reveal five note symbols in order, then shine it on the piano keys to match each symbol to its note. Play:

Mi, Re, Si, Do, Re

Some guides show the notes using Russian labels, but the sequence is the same. Playing it correctly opens the door beside the piano.

Rank #2
Call of Duty Black Ops 6
  • Cross Gen-Bundle of Call of Duty: Black Ops 6 includes Xbox Series X and Xbox One versions of the game.
  • The Black Ops 6 promotion brings dynamic play moment to moment containing a variety of playing spaces with big buster set pieces and action-packed moments, high stakes wedges and spy activity mantle and dagger.
  • In a premium multiplayer experience, players will test their skills over 16 new maps at launch, including 12 core 6v6 maps and 4 strike maps that can be played 2v2 or 6v6.
  • Black Ops 6 also marks the epic return of Round-Based Zombies, fan-favorite mode where players will take down hordes of the undead in two brand new maps at launch.
  • Cross-Gen Bundle of Call of Duty: Black Ops 6 will also be available on select game pass plans at launch. *

3. Crack your randomized basement keypad code

Go through the piano door and down to the keypad. Its five-digit code is randomized, so another player’s answer may not work. Use the blacklight to inspect the keys for fingerprint clues, then enter possible combinations and read the display:

  • Green: the digit is in the correct position.
  • Yellow: the digit is in the code but belongs in another position.
  • Red: that occurrence of the digit is not used.

Track each guess and account for duplicate digits: feedback about one occurrence does not necessarily tell you whether another matching digit is present. The fingerprint marks help narrow the candidates, while the colored feedback tests their positions. According to Shacknews’ keypad guide, the keypad resets to a new code after five failed attempts, so treat each attempt as information and use the clues before guessing again.

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Rank #3
Call of Duty Black Ops 6
  • Kampania Black Ops 6 oferuje dynamiczną rozgrywkę z różnymi obszarami gry z pięknym tłem, intensywą akcją i fantastycznymi aktywnościami szpiegowskimi
  • In the top-class multiplayer gameplay, players can check their skills on 16 new maps at the time of release, including 12 standard 6 on 6 and 4 battle maps that can be played in 2 on 2 or 6 out of 7
  • Black Ops 6 also means the epic return of your fan-favorite Zombies mode

4. Decode the computer password

After opening the keypad door, use the computer’s number-to-letter cipher to identify the four words shown on screen. The words are HOLDING, ROOM, BUNKER, and OPEN, but their order changes. Match the displayed pattern to the cipher on the computer rather than entering a fixed word order.

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5. Pick the lock and get the key

Continue into the newly opened basement area and use the lockpick on the locked door. Adjust the control until a pin catches at its tension point, hold it there, and repeat the process for the remaining pins. Take the key from the room beyond and use it on the locked basement corridor door leading toward the radio room.

Rank #4
Call of Duty: Black Ops 6 - Cross-Gen Bundle - Xbox [Digital Code]
  • This is signature Black Ops across a cinematic single-player Campaign, a best-in-class Multiplayer experience, and the epic return of Round-Based Zombies.
  • The Black Ops 6 Campaign provides dynamic moment-to-moment gameplay that includes a variety of play spaces with blockbuster set pieces and action-packed moments, high-stakes heists, and cloak-and-dagger spy activity.
  • In a best-in-class Multiplayer experience, players will test their skills across 16 new maps at launch, including 12 core 6v6 maps and 4 Strike maps that can be played 2v2 or 6v6.
  • Black Ops 6 also marks the epic return of Round-Based Zombies, the fan-favorite mode where players will take down hordes of the undead in two brand-new maps at launch. Post-launch, players can look forward to even more exciting maps and groundbreaking experiences dropping into both Multiplayer and Zombies.
  • The Cross-Gen Bundle of Call of Duty: Black Ops 6 will also be available on select Game Pass plans at launch.*

6. Tune the radio and find the safe digits

In the radio room, adjust the controls until the frequency indicators align and the broadcast becomes clear. Listen for the four objects named in the message; turn on subtitles if that makes the order easier to follow. The broadcast repeats, so you can listen again.

Use the blacklight to find the number associated with each named object. Write the four digits down in the order the radio names the objects. Both the objects and resulting code vary between playthroughs, so do not substitute a code from someone else’s game.

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7. Open the upstairs safe

Return to the bedroom upstairs and enter the four digits you collected from the object clues. Opening the safe awards $1,000 for safehouse upgrades, the Case Cracker knife blueprint, and the “The Puzzles, Mason” achievement or trophy, according to PowerPyx.

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