Are you ready to solve the Sanctum Sigil Puzzles in Blue Prince? There are eight of these in the game, and they're all found in the same general area. However, the clues you need are scattered all over the estate. Our guide has all the solutions, but be forewarned that there will be spoilers ahead.
How to solve the Sanctum Sigil Puzzles in Blue Prince - Sigil Puzzles guide
The Sigil Puzzles are found in the Inner Sanctum of the Underground. You reach this area as part of your general progression to arrive at Room 46. You're then asked to head down below so you can open the last lever for the Antechamber. That particular lever is also surrounded by eight doors.
To unlock the doors, you need to have Sanctum Keys. You can use a key on any door, though it's better to just move from left to right. Moreover, once unlocked, each door remains open for future runs.
How does the Sigil Puzzle work?

Every room in the Inner Sanctum has a large mechanism at the back. You can also interact with a dial that switches multiple parts of the mechanism:
- The mechanism has a symbol in the center known as the core. As such, we'll just refer to each Sigil Puzzle by its core.
- The first (topmost) dial changes the inner shapes (motes).
- The second dial changes the dividing lines or rays.
- The third dial alters the number of motes and rays.
- The fourth dial (the one at the very bottom) switches the outermost symbols (border).
- If you have the correct pattern, you can press the button to see if you got it right.
Clues for the Sigil Puzzle: Part 1

The clues for the Blue Prince Sigil Puzzle can be found all over the estate. Here are a couple of examples:
- If you drain the Fountain, you can check an area with a round altar.
- If you have access ...