
Solution to the button puzzle found in Livre ex Machina (library).
Other Bloodstained: Ritual of the Night Guides:
- Full Map.
- How to Dodge Cancel and Attack Cancel.
- Password Cheats (New Game).
- Easily Missed Item Locations.
- Demon No.044.
Solution
Within the Livre ex Machina, you will likely have come across this button:

To solve this puzzle, you need two items: the gravity flip shard and the Craftwerk shard. The gravity flip shard is obtained by defeating a boss located in the lava caves. The Craftwerk shard should be acquired before this point.
First, start at the bottom of the room, with the grabable/moveable bookshelf. Go ahead and grab it using the Craftwerk ability. While maintaining the hold, flip your gravity by hitting Down+Up+A. This will send you down, along with the bookshelf you should still be holding onto. Stay to the right, where the button will now be.
Once you’re confident you’re below the button, flip the gravity back and fall down onto the button, dropping the bookshelf onto it. That will open up the gate to the right. Congrats!

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