Resident Evil Requiem Moon Puzzle: Exact Code & Solution Guide

A gloved hand of Grace Ashcroft actively turns a mechanical dial on a rustic mechanical puzzle box with Sun, Moon, and Star symbols within the dark Chairman's Office of the Rhodes Hill Care Center in Resident Evil Requiem.

When you are navigating the dark, blood-stained halls of the Rhodes Hill Care Center as Grace Ashcroft in Resident Evil 9: Requiem, your first major roadblock is the locked door in the Central Hall. To open it, you need three jewels, and your very first target is the Moon Quartz hidden inside the Chairman’s Office.

Honestly, when you first step into that office and see the Chairman hunched over the floor feeding on his former assistant, solving a mechanical puzzle is the last thing on your mind. As survival horror veterans here at XMODhub, we have put together the fastest, most direct solution so you can grab your loot and get out before things go south.

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1. Quick Answer: The Moon Puzzle Box Code

If you are currently hiding from an enemy and just need the solution immediately without searching the room, here is the exact combination:

How to open the Moon Puzzle Box in Resident Evil Requiem:
Location	Chairman’s Office, West Wing (2nd Floor).
The Code	Moon (Right) – Sun (Middle) – Star (Left) – Moon (Right).
Required Item	The Pencil (found in the back room of the office).
Reward	The Moon Quartz (needed for the Central Hall door).

(Note: Make sure to grab the Unicorn Trinket Box in this room before you leave, as you will need to open its back to obtain the Red Jewel later!)

2. Step-by-Step: How to Solve the Moon Puzzle

If you want to experience the puzzle the way Capcom intended, here is the logical path to finding the solution:

01
First, head into the Chairman’s Office on the 2nd Floor of the West Wing. You can largely ignore the Chairman feeding on the floor as long as you don’t get too close. Walk straight into the back room of the office and pick up the Pencil sitting on the desk.
02
Head back out to the main reception area of the office. On a small table, you will see a Torn Journal (a notebook with a ripped page). Open your inventory and use the Pencil to shade over the notepad. The graphite will reveal the faint indentations of the correct code sequence: Moon, Sun, Star, Moon.
03
Walk over to the mechanical Puzzle Box on the side table, rotate the dials to match that exact sequence, and collect your Moon Quartz.

3. Completing the Set: Sun and Star Quartz Solutions

The Moon Quartz is only one-third of the Central Hall door puzzle. To avoid getting stuck later, here are the quick solutions for the remaining two puzzle boxes you will encounter:

The Sun Quartz (Lead Researcher’s Office)

You will find this locked Puzzle Box in the East Wing (2nd Floor). You must first grab the Corrosive from the Conference Room to melt the padlock. The code is hidden in photographs around the office. The solution is Star, Sun, Moon, Sun.

The Star Quartz (Security Manager’s Office)

Found in the Isolation Ward, this box’s buttons are written in Braille. You cannot solve it manually. You must rescue Emily from the Medication Room and bring her to the office so she can read it for you automatically.

4. Advanced: The “Moon” Connection in The Final Puzzle

If you are searching for the Moon Puzzle, there is a high chance you are actually looking for clues regarding the game’s biggest mystery: The Final Puzzle (the infamous 20,000 CP challenge).

After analyzing the Severed Hand in the Blood Lab, you receive the RNA sequence: GGC-AAG-AUA-ACG-UGU-CAU. To decode this, you need to find celestial distances hidden around the map.

The clue for the “Moon” is hidden inside the Hourglass found in the VIP Suite. If you unscrew both sides to remove the base, flip it so the sand runs, and tilt it, you will reveal the hidden text: U = 380,000. Because 380,000 kilometers is the approximate distance from the Earth to the Moon, this confirms that the letter U translates to Moon in the final decoding process.

5. Survive Rhodes Hill with XMODhub

Getting the Moon Quartz is just the beginning of the nightmare. The resource scarcity and aggressive enemy AI in the Care Center have pushed many players to their breaking point, especially on the punishing Insanity difficulty.

If you want to focus on solving the intricate puzzles of Resident Evil Requiem without the constant stress of running out of ammo, XMODhub is your ultimate backup plan.

How to turn the tables with XMODhub:

Visit our site
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One-Click Install
Our client is lightweight, secure, and incredibly easy to use.

Take Control
Open the overlay in-game to instantly activate Infinite Ammo, God Mode, or multiply your Antique Coins.

Enjoy the Lore
Stop worrying about inventory management and enjoy Grace and Leon’s terrifying story the way you want to play it.

6. Conclusion

Solving the Moon Puzzle Box in the Chairman’s Office is your first real test in Resident Evil Requiem. Whether you use the Pencil trick to uncover the Moon-Sun-Star-Moon code naturally, or you use our quick guide to speedrun the room, getting that Moon Quartz is essential for escaping the Care Center.

Keep your eyes peeled for more celestial clues, manage your health carefully, and remember that the Entrenador XMODhub is always available to give you the upper hand when the horrors of Rhodes Hill become too much to handle. Good luck out there!