Firstly, you must find the piano to solve the piano puzzle in Call of Duty: Black Ops 6. This piano can be found in a room on the way to the training room on the safehouse’s ground floor.

If you want help with the rest of the puzzle chain, you can find a full guide on how to solve them all and get the safe code here. Be sure to check out our Black Ops 6 page for more news and guides.