- On Thin Ice chapter 1 walkthrough covers every major clue, item, code, and puzzle solution.
- First code: Read the chip reader and enter 63849 on the computer.
- Cabin code: Arrange the metal numbers to form 40827.
- Safe code: Count the body symbols to get 9416.
- Chapter goal: Recover Hacksaw’s evidence from the hidden safe.
On Thin Ice chapter 1 walkthrough: Getting Inside
The opening section introduces the crime scene, the sealed police desk, and the frozen cabin. Progress depends on collecting items in the correct order rather than solving every object immediately. Follow the investigation path below to avoid backtracking.
Video Highlights:
- Collecting the chip reader and finding the first computer code
- Repairing the snowblower and clearing the path
- Arranging the metal numbers to unlock the cabin
- Entering the cabin and locating the first investigation items
Opening item route
| Area | Action | Result |
|---|---|---|
| Crime scene desk | Take the chip reader from the box | Reveals the computer code |
| Computer | Enter 63849 | Opens the next investigation sequence |
| Snowbank | Collect the wheel, nozzle, and fuel | Provides parts for the snowblower |
| Snowblower | Attach the wheel and nozzle, then add fuel | Clears the snow outside |
| Number board | Place and arrange the metal numbers | Produces 40827 |
| Cabin door | Enter 40827 | Opens the cabin |
Inspect the chip reader directly after placing it on the desk. The bold numbers are the clue; the computer does not provide a separate combination.
After entering 63849, leave the desk and focus on the snow-covered equipment. The snowblower requires three separate items: the wheel, nozzle, and fuel. Attach the parts before attempting to clear the snow. Once the machine is ready, use it on the snowbank to uncover the loose metal numbers.
Place those numbers on the nearby board and arrange them as 40827. Enter the sequence on the cabin keypad. This code is fixed for the chapter, so record it before moving inside.
Cabin Search and the Symbol Safe
The cabin contains several clues that appear disconnected at first. Search the room thoroughly before trying to force the locked puzzles. The body, the symbol strip, the loose floorboards, and the dirty safe all contribute to one code.
Cabin search order
| Location | Item or clue | Recommended action |
|---|---|---|
| Window | Natural light | Open it to improve visibility |
| Rug and mattress | Hidden access points | Move both objects |
| Cabinets | Triangle puzzle | Note it for later |
| Body | Tattoos and symbol marks | Inspect all four points |
| Hand area | Symbol strip | Record arrow, skull, heart, and wave |
| Leg compartment | Locked compartment | Return after finding a screwdriver |
| Floorboards | Concealed safe | Use the hacksaw to open the boards |
Search the room
Open the window, move the rug and mattress, inspect the cabinets, and take the curtains and hacksaw. These actions reveal the room’s main investigation path.
Inspect the body
Examine the four marked areas of the body, the tattoos, the empty phone case, and the symbol strip near the hand.
Open the floorboards
Use the hacksaw on the loose floorboards and pull out the safe. It is dirty, so do not try to enter a code immediately.
Clean the safe
Go outside, wet the cloth in the puddle, return inside, and wipe the blood from the safe.
Decode the symbols
Count each symbol shown on the strip, then enter the four-number sequence into the safe.
The safe code is based on the number of visible symbols across the body. Entering a guessed combination before cleaning and inspecting the clues can make the sequence easy to lose track of.
The symbol strip shows four symbols in order: arrow, skull, heart, and wave. Count them across the body and match the totals to that order.
| Symbol | Count | Code position |
|---|---|---|
| Arrow | 9 | First |
| Skull | 4 | Second |
| Heart | 1 | Third |
| Wave | 6 | Fourth |
The correct safe code is 9416. Open the safe and collect the letter triangles and lockpick gun. The triangles become important later, while the lockpick gun opens the blocked door on the right side of the cabin.
Outside Area, Fire, and the Locked Box
The right-side outdoor area contains the next chain of objectives. A burning vehicle, several bodies, a locked box, and a mechanical puzzle all need to be handled before the phone can be recovered.
Clear the Fire
Take the fire extinguisher after removing the tarp from the grill, then use it on the burning car.
Recover Tools
Inspect the bodies after the fire is out to obtain the crowbar and wrench.
Open the Box
Use cleaning oil on the rusty box, then return with the small key from the repaired wheelchair.
Outdoor progression table
| Objective | Required item | Result |
|---|---|---|
| Remove rust | Cleaning oil | Makes the locked box usable later |
| Extinguish the car | Fire extinguisher | Allows access to the bodies |
| Open the car door | Crowbar | Reveals the phone cord |
| Repair the wheelchair | Wrench | Produces the small key |
| Unlock the rusty box | Small key | Gives the screwdriver and more triangles |
| Open the leg compartment | Screwdriver | Reveals the dead phone |
Use the cleaning oil on the rusty box as soon as you find it, even though the box cannot open yet. This prepares the location for the small key and reduces unnecessary return trips.
Use the lockpick gun on the door to the right of the cabin. Outside, move the tarp from the grill to find the fire extinguisher and cleaning oil. Clear the nearby snow to reveal the rusty locked box, then apply the cleaning oil.
The ice blocks lead to the Ice Stairway puzzle. Slide the blocks until the numbered pieces reach their matching slots. The puzzle includes extra blocks, so plan each movement instead of shifting pieces randomly. Completing it is part of the investigation route, but the chapter can continue after the main outdoor items are collected.
Next, use the fire extinguisher on the vehicle. Tap each body to collect the crowbar and wrench. The crowbar opens the car door and exposes the phone cord. Return to the cabin, plug in the cord, and use the wrench on the wheelchair. Take the small key, return outside, and use it on the prepared locked box.
Phone Evidence and the Triangle Puzzle
The dead phone connects the physical clues to Hacksaw’s evidence. This sequence requires the screwdriver, phone cord, charger, and the body’s face. Complete each interaction in order so the phone can be unlocked and searched.
Evidence chain
| Step | Action | Item gained or information revealed |
|---|---|---|
| 1 | Use the screwdriver on the leg compartment | Dead phone |
| 2 | Place the phone on the wireless charger | Phone becomes usable |
| 3 | Use the phone on the body’s face | Facial ID unlocks it |
| 4 | Read the messages | Learn about the delivery |
| 5 | Use the phone at the mailbox | More triangles and a chart |
| 6 | Return to the cabinet puzzle | Unlocks the final photo |
The phone is not unlocked with a written password. After charging it, use the device on Hacksaw’s face to activate facial recognition.
Use the screwdriver from the outdoor locked box on the compartment in the body’s leg. Take the dead phone and place it on the wireless charger inside the cabin. After it charges, use the phone on Hacksaw’s face. The facial recognition step unlocks the device.
Read through the messages carefully. The important discovery is that Hacksaw received a delivery stored in the mailbox outside the cabin. Return to the front area and use the phone to unlock the mailbox. Collect the remaining triangles and the chart.
Place all the triangles into the cabinet puzzle to begin Triangulate. Tap the highlighted triangles to guide the electrical dot toward the yellow triangle on the far right. Each movement rotates the triangle where the dot lands, so watch the changing orientation before selecting the next highlighted piece.
When the puzzle is complete, take the photo. The triangle puzzle is easier when you focus on the destination and treat each rotation as part of the route rather than attempting to move directly across the board.
Final Safe, Evidence Recovery, and Checklist
The final objective is to assemble the three story clues and open the hidden safe. This completes Chapter 1 and confirms that the investigation has recovered Hacksaw’s evidence.
Final assembly
| Item | Source | Use |
|---|---|---|
| Letter | First safe inside the cabin | Place on the wall frame |
| Chart | Mailbox outside the cabin | Place with the other evidence |
| Photo | Triangulate cabinet puzzle | Completes the wall arrangement |
| Hard drive | Hidden wall safe | Contains Hacksaw’s evidence |
Chapter 1 Progress Checklist:
- Enter 63849 on the computer
- Repair the snowblower and form 40827
- Open the symbol safe with 9416
- Collect the phone, mailbox triangles, and chart
- Complete Triangulate and open the hidden safe
Keep the letter, chart, and photo together. They are the three required objects for the wall frame and should be placed only after the triangle puzzle is finished.
Return to the cabin after completing Triangulate. Tap the frame on the wall and place the letter, chart, and photo into the three available spaces. The arrangement opens the hidden safe and reveals the hard drive containing Hacksaw’s evidence.
If the safe does not open, confirm that you completed the following sequence:
- The phone was charged on the wireless charger.
- Facial ID was used on Hacksaw’s face.
- The mailbox was unlocked with the phone.
- All triangles were placed into the cabinet puzzle.
- The photo was collected after solving Triangulate.
- The letter and chart were also collected.
For additional chapter navigation, use the Adventure Escape Mysteries On Thin Ice walkthrough guide as a related reference. The Chapter 1 route ends when the hard drive is recovered and the story moves forward.
Q: What is the first code in the On Thin Ice chapter 1 walkthrough?
The first code is 63849. Inspect the chip reader after placing it on the desk, then enter the five-number sequence on the computer.
Q: How do I open the cabin in Chapter 1?
Repair the snowblower with the wheel, nozzle, and fuel. Clear the snow, arrange the metal numbers as 40827, and enter that code on the cabin door.
Q: What is the safe code in On Thin Ice Chapter 1?
The safe code is 9416. Count the arrow, skull, heart, and wave symbols on the body in the same order shown on the symbol strip.
Q: How do I unlock Hacksaw’s phone?
Find the dead phone in the leg compartment, charge it on the wireless charger, and use it on Hacksaw’s face to activate facial recognition.