Room 50 Walkthrough: Complete Detective Sveva Guide, Safe Puzzle & Train Solutions

When an elderly couple arrives atDetective Sveva’sapartment early one morning pleading for help to find their missing daughter, the case quickly takes a chilling personal turn. A mysterious parcel left for Sveva contains a photograph takeninside her own living room—showing a hooded intruder hiding a key inside her wall safe and leaving behind a trail of mechanical riddles pointing toRoom 50at a remote mountain hotel inPiesolo.

Welcome to theofficial complete walkthrough forRoom 50! This step-by-step detective guide covers every 3D object inspection, inventory combination, safe puzzle solution, secret phone number, and the entire train investigation to Piesolo.

🧪 Complete Inventory Combination Recipes

Throughout Sveva’s investigation, you will need to combine items inside your inventory before using them in the scene:

🛏️ Part 1: Sveva’s Bedroom & Bathroom

Sveva’s younger sister,Martha, wakes her up with news that two clients are waiting in the living room. Before Sveva can step out of her bedroom, she needs to wash up and get dressed.

1. Unlock the Bathroom Door:Pick up theBathroom Keyin the bedroom and use it on the bathroom door lock. In the 3D door close-up,swipe leftacross the handle to swing the door open, then tap the arrow to enter theBathroom.
2. Brush Sveva’s Teeth:Inside the bathroom, collect theToothbrushand theToothpaste. Open your inventory, combine them together, and use theToothbrush with Toothpasteon Sveva.
3. Find Sveva’s Clothes & Shoes:Return to the bedroom. Tap thePillowon the bed to move it aside and uncover herShoes. Pick up theShoes, theShirt, and theJeans.
4. Get Dressed:Drag theShirt,Jeans, andShoesonto Sveva one by one. Once she is ready, tap the hallway door arrow to enter the living room.

🍵 Part 2: The Living Room, Kitchen & The Mysterious Parcel

After speaking with Martha in the main living area (Frame 1), walk into the sitting room (Frame 2) and talk to theElderly Couple. Shaken by their daughter’s disappearance, the husband asks for a hot cup of tea before he can explain how they found the package addressed to Sveva.

Step 1: Prepare the Complete Tea Tray

• Return to the main room (Frame 1) and pick up theTea Set (Teapot & Cup)near Martha.
• Enter theKitchen (Frame 3). Pick up theKettle, theCookies, and theServing Tray.
• Use theKettleon the kitchen stove and wait a moment for the water to boil, then pick up theBoiling Kettle.
• In your inventory, combine:
  1. Tea Set+Boiling Kettle→Hot Tea Set
  2. Hot Tea Set+Serving Tray→Tea on Tray
  3. Tea on Tray+Cookies→Complete Tea & Cookies Tray
• Return to the sitting room (Frame 2) and serve theComplete Tea Trayto the couple. After thanking Sveva, they leave theMysterious Parcelon the coffee table and depart.

Step 2: Win the Box Cutter from Martha

• The parcel is tightly taped shut. Return to Frame 1 and askMarthafor her box cutter. True to form, Martha challenges Sveva to a tabletop puzzle before handing it over!
• How to Beat Martha’s Minigame:
  • Marble Peg Solitaire Board:Jump any marble horizontally or vertically over an adjacent marble into an empty hole to remove the jumped piece. Work from the outer edges inward so you don’t leave stranded marbles, finishing with asingle marbleon the board.
  • Dots & Boxes Board (Updated Edition):Take turns drawing single lines between adjacent dots. Avoid drawing the third side of any 1×1 box until no safe lines remain, then claim long chains of boxes in consecutive bonus turns to outscore Martha.
• Once you win, Martha gives you theBox Cutter. Return to Frame 2 and use theBox Cutteron the parcel to reveal:
  1. A disturbingPhotographtaken inside Sveva’s living room showing a hooded figure placing a key inside her wall safe.
  2. A lockedWooden Boxwith missing numbered tiles.
  3. A cylindrical5-Ring Cryptex Artifact.

🔐 Part 3: 3D Living Room Clue Hunt, Wall Safe & Rotary Phone Code

To open the intruder’s wooden box and decode the Cryptex Artifact, you must search the living room in 3D forNumbered Cubesand crack the wall safe shown in the photograph.

Step 1: Collect All Numbered Cubes in the Living Room (Frame 1)

Return to the main living room (Frame 1) and inspect these five spots using the 3D object viewer:

1. Shelf Ornament:Tap the decorative ornament on the shelf to slide it aside and pick up the firstNumbered Cube.
2. Wooden Wardrobe (3D):Tap the wardrobe andswipe leftto open the door and collect the hidden cube.
3. Grand Piano (3D):Tap the piano androtate the 3D modelto spot and grab the cube tucked into the frame.
4. Piano Stool (3D):Tap the stool in front of the piano androtate itto collect the cube underneath.
5. Armchair (3D):Tap the plush armchair andswipe upon the seat cushion to lift it and grab the final cube.

Step 2: Crack the Wall Safe Behind the Painting

• Tap the framedWall Paintingin Frame 1 andswipe leftto slide the canvas aside, revealing the secret wall safe from the stalker’s photo.
• Wall Safe Color Lock Solution:The safe has 4 colored indicator lights and 4 buttons below them. Each button cycles a specific group of lights:
  • Button 1 (Far Left):Cycles Lights 1 & 2
  • Button 2 (Middle-Left):Cycles Lights 1, 2 & 3
  • Button 3 (Middle-Right):Cycles Lights 2, 3 & 4
  • Button 4 (Far Right):Cycles Lights 3 & 4

  To solve it immediately from the starting state, simply pressButton 1 (Far Left)until Lights 1 and 2 turn green to match Lights 3 and 4! Once all four lights are green,swipe righton the safe handle to open the door and take theSmall Box Key.

Step 3: Solve the Wooden Box, 7-Gear Plate & Cryptex Artifact (Frame 2)

1. Wooden Box 3×3 Sliding Puzzle:Return to Frame 2, use theSmall Box Keyon the wooden box, and insert your collectedNumbered Cubes. Slide the tiles into numerical order (1to8) in just 4 moves:
   MoveTile 4 Down→ MoveTile 3 Right→ MoveTile 5 Up→ MoveTile 4 Left
2. 7-Gear Alignment & Scratch Strip:Opening the wooden box reveals a brass mechanism with7 interlocking gears. Tap and hold each gear one by one to rotate it in 45° increments until every gear reaches its0°upright alignment and the mechanism locks into place. Next, rub your finger across the metallicscratch-off stripat the bottom to reveal the 5-symbol combination!
3. 5-Ring Cryptex Artifact & Old Map Trail:Tap the cylindricalArtifacton the table and rotate the 5 rings so their center symbols match the scratch-card clue (positions22 - 7 - 10 - 15 - 10). AnAncient Mapunfolds!
4. Navigate the Old Map Stamina Maze:Drag the footprint marker along the mountain trail toward the destination on the right. Move at a steady, moderate speed—if you drag too fast, your stamina bar at the top will deplete and reset your walk! Reaching the mountain village reveals a 7-digit telephone number:0216802.
5. Dial the Rotary Telephone:Tap the vintage telephone in the living room and dial0 - 2 - 1 - 6 - 8 - 0 - 2. A chilling voice answers:“…there is a village in the mountains called Piesolo. You will find a hotel there, look for room number 50.”

🚂 Part 4: The Train to Piesolo – Complete Investigation

Sveva boards the mountain express train toward Piesolo, but the stalker’s game continues right inside her passenger car. As soon as the chapter begins, theTrain Conductorhands Sveva a mysterious sealed envelope.

Step 1: Find the First Parchment Half & Decode the Invisible Ink

1. Search Sveva’s Seat in 3D (Frame 1):Step forward to Frame 2 so Sveva stands up from her booth, then return toFrame 1and tap her emptyTrain Seat. Rotate and inspect the 3D seat cushions to find theFirst Half of an Ancient Parchment!
2. Open the Conductor’s Envelope (Frame 2):Tap the envelope on the dining table and manipulate the 3D letter to pull out a seeminglyBlank Sheet of Paper.
3. Reveal the Invisible Ink with Lemon Juice:
   • Tap the silver cloche lid on the dining table to uncover the meal plate.
   • Pick up theLemons, theFork, and theKnife.
   • Use theLemonson theBlank Letteron the table—the citric acid reacts with the invisible ink, revealing a drawing of aLady’s Handbagidentical to the purse belonging to the female passenger in Frame 4!

Step 2: Distract the Conductor with the Bottle of Wine (Frames 4 & 5)

If you try to climb on the seat in Frame 3 to reach the overhead luggage rack—or try to touch the lady’s handbag in Frame 4—the strict conductor immediately stops you. You need a clever distraction:

1. Walk all the way to the conductor’s galley inFrame 5. The first time you enter, the conductor turns around to face you (“Can I help you, miss?”).
2. Step back out of Frame 5 andre-enter Frame 5 immediately—now his back is turned! Quickly tap theBottle of Wineon his service cart to swipe it without being seen.
3. Go toFrame 4and use theBottle of Wineon the female passenger’s table.
4. The conductor rushes into Frame 4 to scold Sveva, sparking a heated argument with the female passenger over the train’s service!

Step 3: Grab the Pliers, Handbag Key & Unscrew the Under-Table Box

1. Grab the Pliers (Frame 3):While the conductor is occupied in Frame 4, walk toFrame 3and tap the passenger chair to climb up and collect thePliersfrom the overhead luggage shelf.
2. Take the Handbag Key (Frame 4):Return toFrame 4. Fed up with the argument, the female passenger stands up and storms out of the car, leaving her purse behind! Tap herHandbagto collect theSmall Key.
3. Craft the Bent-Tine Fork Screwdriver:Open your inventory and combine thePliers+Forkto bend the metal tines into an improvisedBent-Tine Fork Screwdriver.
4. Open the Hidden Drawer Under the Table (Frame 3):
   • InFrame 3, tap the tablecloth to flip it up, then tap underneath the table to open the 3D drawer view.
   • Swipe downto slide open the hidden under-table drawer, revealing a small lockbox screwed into the wood.
   • Use yourBent-Tine Forkon the box to unscrew and detach it.
   • Use theSmall Key(from the lady’s handbag) to unlock the box and claim theSecond Half of the Parchment!
5. Assemble the Complete Ancient Map:In your inventory, combine theFirst Parchment Half+Second Parchment Halfto form theComplete Mapas the train pulls intoPiesolo Station, bringing Sveva face-to-face with the mystery of Hotel Room 50!