How to Solve Library Annex Door Puzzle 21-17 – Hogwarts Legacy

Jon Suan
3 Min Read

The new Hogwarts Legacy game is out and with it comes thousands of players enjoying the game and some of them are even watching it being streamed.

The game lets you play as your own custom character as you go through the life of being a student in Hogwarts in a time way before the books and movies.

The game also has a big open world, a lot of interesting characters and fun quests and let’s not forget about puzzles too!

In this guide, we’ll show you how to do one of the puzzles in the game.

Hogwarts Legacy: How to Solve Library Annex Door Puzzle 21-17

There are a lot of puzzles in Hogwarts Legacy, some of them can be quite easy while others need a bit more brain power to solve. This puzzle is somewhere around the middle and you can get some rewards at the end so let’s get started on how to solve it.

Source: Game Guides Channel – YouTube

The middle of each triangle is the sum of all the numbers and symbols around it.

The symbols correspond to a number shown above, so you need to set the question marks into the right symbol.

For example, the top triangle has 21. To the left of it is 11 and to the top is the symbol for 2 which adds up to 13. Now we need to set the symbol for 8 to solve it!

Source: Game Guides Channel – YouTube

For those who don’t want to think that hard then just use the image above for the single question mark and the one shown below for the double question mark.

Once done correctly the door will open and the puzzle is complete!

Source: Game Guides Channel – YouTube

Congratulations you now know how to do this puzzle in Hogwarts Legacy, now go out there and try to get it yourself!

Many thanks to Game Guides Channel for showing everyone how to do this, if you need more information on the subject then check their YouTube video.

ALSO READ: Hogwarts Legacy: How to Use Unidentified Gear

An aspiring Game Journalist and Fiction writer.
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