If you’ve found yourself scratching your head in the Chess Room of Blue Prince, trying to make sense of the mysterious Castle Cipher Puzzle, you’re not alone. This is one of the trickiest and most talked-about puzzles in the game — but don't worry, we’ve got you covered with this full breakdown of what it is, how to beat it, and what the community is saying.
Let’s crack this chessboard mystery together! ♟️🧩
🎯 What Is the Castle Cipher Puzzle?
This puzzle is found in the Chess Room, one of the most iconic and brain-busting parts of Blue Prince. It's not just about moving pieces on a board — it’s about interpreting chessboard patterns, solving ciphers, and using clues from other rooms to progress.
Here’s what you’ll need to do:
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Draft the right rooms during your run.
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Collect letter clues hidden in specific areas.
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Place chess pieces based on where you found them.
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Decode the vertical word cipher using hints from classrooms.
Yeah… it’s a lot. But it’s also super satisfying once you figure it out.
🧩 Step-by-Step: How to Solve the Castle Cipher Puzzle
🧱 1. Draft Key Rooms First
Before you even get to solving, make sure you draft these important rooms:
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Schoolhouse (essential for unlocking clue-based classrooms)
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Kennel
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Locker Room
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Cloister
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Vault
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Secret Passage
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And of course… the Chess Room
The Schoolhouse opens access to key Classrooms like:
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Grade 4 – Geography
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Grade 8 – Erajan Language
These classrooms hold the decoding secrets you’ll need later.
🔍 2. Collect the Cipher Clues
You’re hunting for letters arranged vertically or in groups in the following locations:
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Kennel – Check the shelf
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Locker Room – Inside one of the lockers
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Vault – Look for the fake passport
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Cloister – Beside the statue
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Secret Passage – Hidden behind a bookshelf
Write these letters down exactly as you find them — the order matters!
♟️ 3. Use Chess Logic for Piece Placement
This is where things get spicy. You’ll be placing chess pieces on the board based on where you originally found them in your run:
| Chess Piece | Found In Room |
|---|---|
| Pawn | Den |
| Knight | Security |
| Bishop | Chapel |
| Rook | Nook |
| Queen | Her Ladyship's |
| King | Throne Room |
Once placed correctly, they’ll help you unlock part of the puzzle tied to the in-game “castle” move — aka using both Rook and King powers in tandem. That triggers a cool progression moment in the Chess Room!
🔤 4. Decode the Cipher
Now you’ll use the letter clues and the Classrooms (especially Erajan Language) to break the cipher. It’s basically a vertical word code. Using the clues from your run, rearrange and interpret the letters.
Tip: Some players say it’s like creating a password or unlocking a secret by recognizing repeating patterns and possible fictional “language” elements from the Erajan world.
💬 What the Community Is Saying
We love a good puzzle, but this one has the whole Blue Prince community buzzing. Here's what folks are doing to crack it:
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🧠 Theorycrafting on Reddit: Some clever players over at r/BluePrince are comparing their cipher layouts to see which clues stay consistent and which vary.
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🗺️ Mapping Room Positions: Players are mapping out how room placement affects chessboard logic — super useful for figuring out piece positions!
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📚 Sharing Decoding Guides: Some folks are decoding Erajan phrases and turning them into fan-made “translation” guides. That’s commitment.
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🎥 Video Tutorials: Streamers and YouTubers are starting to drop Castle Cipher walkthroughs — like this one from GameSpot that breaks down the process step by step.
✅ Quick Tips Before You Go
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Always draft the Schoolhouse first. Without it, the cipher can't be solved.
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Keep screenshots or notes of every letter you find — don’t rely on memory.
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The puzzle changes a bit based on your drafted layout — so no two solves are exactly the same.
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Check Reddit or the Steam forums if you’re really stuck — the community is super active and helpful!
🔗 Community Support Links
🧠 Final Thoughts
The Castle Cipher Puzzle in Blue Prince is one of those challenges that makes you feel like a genius when you finally crack it. It’s layered, smart, and full of “aha!” moments — especially when you combine clues from all over the mansion. 🕵️♀️
So don’t be discouraged if it takes a while. Take notes, check your rooms, and remember: the community’s got your back if you need help.
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Struggling with the water puzzles in Blue Prince? 🌊 Discover how to unlock hidden rooms using water flow in this step-by-step guide. If you're exploring the Pump Room and want to uncover its hidden paths, items, and mechanics, don't miss our full breakdown of Pump Room secrets and water puzzles. Get every valve turning the right way! 🧩💧
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