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May 01, 2023

How to Open Arithmancy Puzzle Doors

If you’ve explored Hogwarts, there’s a good chance you have encountered the

If you’ve explored Hogwarts, there's a good chance you have encountered the large wooden number doors that are surrounded by strange beast symbols and locked behind mathematical equations. These puzzle doors are known as Arithmancy Doors, and while they may seem intimidating at first glance, they’re actually relatively easy to solve once you learn what the symbols represent. This guide will explain everything you need to know about solving the Arithmancy Door puzzles in Hogwarts Legacy.

So whether you’re an avid completionist or simply want to skip ahead to the solution, click the links below to jump to…

Please note that you do not need to uncover the Symbol Cipher to solve the Arithmancy Door puzzles. So, skip ahead to our solution if you don't wish to find the cipher note.

To find the Arithmancy Door cipher, start by traveling to Divination Classroom Floo Flame, which is located in The Library Annex of Hogwarts.

From this Floo Flame, head through the doorway to your right and travel across the wooden walkway until you reach an intersection – turn right and follow the path to the end.

At the end of the path, search the small blue chest on the bench seat next to the blackboard. Here, you’ll discover the Arithmancy Door cipher, which reveals the numerical value of each symbol represented around the door's archway.

Now, solve the Arithmancy Door nearby, and it’ll lead you to the Arithmancy Classroom, where students learn about the magical properties of numbers and numerology. In the classroom, you’ll also find two additional Arithmancy Puzzle Doors that both lead to treasures.

As we explained earlier, finding the cipher isn't necessary to solve the Arithmancy Door Puzzles. As long as you know the numerical value of each symbol, you can unlock all Arithmancy Doors you encounter.

So, whether you’ve obtained the cipher or not, solving the Arithmancy Door puzzles can seem a little intimidating, but the solutions are much easier than they look. To solve the puzzle, simply approach the door and reveal a set of equations. Both equations will feature a central number that is surrounded by three figures.

Here's the catch, though, some of the symbols will be replaced by a question mark and potentially a creature-like symbol, which will match one of the symbols that can be seen around the arch of the door. Each of these symbols represents a number, and starting from left to right, the symbols will represent the numbers 0 through 9.

Fortunately, with a simple substitution equation, you’ll have the answer needed to unlock the door.

Using the above door as an example, you’ll always want to start from the central number. So, we’ll start with nine, and then you’ll want to subtract both two and the dragon-like symbol, which, when using the cipher, shows that its numerical value is three.

This means that the ? is equal to four – which is represented by the bird symbol.

To confirm this result, add all three of these numbers together, and you’ll get nine.

Now, simply repeat this step for the second equation – see the equation solution below:

Now that you’ve worked out the value of ? and ??, roll the large triangle symbols beside each door, so the question marks represent the symbol of each numerical value.

Once the symbols are rolled into place, open the door, and you’ll now have access to all the hidden loot inside – which will mostly consist of gear.

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