The Chained Box Puzzle in Silent Hill 2 is an intricate and essential component that players must navigate to advance through the game. Below is a comprehensive guide to solving this puzzle, with clear steps and information on where to find the necessary items.

Overview of the Puzzle

The Chained Box, also known as the Hospital Box Puzzle, is situated on the second floor (2F) of Brookhaven Hospital’s Otherworld. Directly adjacent to the Nurses’ Station, the box features a combination lock, a keypad, and a keyhole. To unlock it, players need to gather three critical items:

1. Combination Lock Code
2. Lapis Eye Key
3. Keypad Code

Steps to Solve the Puzzle

1. Obtain the Combination Lock Code

– Calendar Page:
– Start at the Chained Box and head south to the Restroom.
– Use the nearby metal cart to climb through the passage into Room L1.
– Navigate through a breakable wall into Room M3, and then further into Room M2 to locate the Calendar Page.

From this Calendar Page, decipher the code as follows:
– First Number: “1 year they’ve been watching me” indicates (1).
– Second Number: The clock depicted on the page shows “2” (2).
– Third Number: A look into the sink reveals six pills (6).
– Fourth Number: A flickering light appears twice (2).

Thus, the complete combination lock code is 1622.

2. Obtain the Lapis Eye Key

– Instrument of Force:
– Go left from the Chained Box and ascend the staircase to the third floor (3F).
– Enter Exam Room 4 (the X-Ray Room) where you will find a mannequin positioned on a surgical chair.
– Use the Instrument of Force to break the mannequin’s right arm.

– Breaking Through Walls:
– After dealing with any enemies, proceed north of Room D2 to break through another wall.
– Take the ladder down from Room D1 into the Medical Records area on the first floor (1F).

– Key of Bliss:
– Navigate through a narrow gap to access the Restroom and collect the Key of Bliss hidden in a wall hole.

– Lapis Eye Key:
– Return to Exam Room 4 and apply the Key of Bliss to the mannequin, which will yield the Lapis Eye Key.

3. Obtain the Keypad Code

– Director’s Office Key:
– From the Chained Box, transverse to the area opposite the Director’s Office. Break through the wall to enter the Laundry Room and then Room L2.
– Move a cupboard aside and shift a metal cart to gain access to Room L3 via a crawlspace.
– In Room L3, find the Director’s Office Key.

– Powering the Generator:
– Go back to the Director’s Office and utilize the key to unlock the door. Ascend the ladder to get to the third floor (3F).
– Follow the red wire to a hole in the wall, which leads to the Generator. Activate it to power up the system.
– Next, return to the Treatment Stretcher located in Room 17 to reveal the keypad code: 9659.

Final Steps

After collecting all necessary codes and keys, you can now open the Chained Box:

– Insert the Lapis Eye Key into the keyhole.
– Enter the combination 1622 into the combination lock.
– Input the keypad code 9659 on the keypad.

By performing these actions, the Chained Box will open, allowing players to progress further into the game’s engaging storyline. Good luck navigating the eerie corridors of Brookhaven Hospital!