In the game Stray, solving puzzles related to locked doors involves a combination of keen exploration and effective use of B-12’s abilities. Below are detailed strategies that can enhance your ability to unlock various doors throughout your journey:

Key Strategies for Unlocking Doors

1. Examine Your Surroundings for Clues:
– Pay close attention to your immediate environment. Codes and keys are frequently hidden nearby. In the chapter titled “The Flat,” for instance, when you approach a locked door, shining B-12’s light on a whiteboard can uncover the door code (like 3748), which is crucial for unlocking the door.

2. Explore Adjacent Areas:
– It’s important to thoroughly check areas adjacent to the locked door. This might involve entering nearby rooms or climbing shelves. For example, in some sections like the storage area, you might find it necessary to investigate slightly elevated spaces or dimly lit corners to uncover the information needed to unlock a door.

3. Interact with Environmental Objects:
– Many puzzles require you to engage with various items found in the environment, such as notes, books, and devices. For instance, in the Slums’ library, there’s a safe that needs to be opened. To find the key, you would need to follow clues left on notes or other pieces of information scattered nearby, such as those found on a bed close to the door.

4. Utilize B-12’s Hacking Skills:
– As the game progresses, certain doors or systems become more complex and require hacking. Look out for terminals that are marked with yellow padlocks. You may need to sabotage nearby interactive panels before commanding B-12 to hack into these terminals, effectively allowing you to unlock doors or access secure systems.

Summary of Steps

1. Search Thoroughly: Check the immediate area surrounding the locked door, including adjacent rooms and high places.
2. Use B-12’s Light: Shine B-12’s light on objects to reveal hidden codes or pertinent information on boards or notes.
3. Collect and Analyze Clues: Look for hidden codes (like 3748 in “The Flat”) or keys that may be concealed within your environment.
4. Hack Terminals: Learn to sabotage security systems and utilize B-12’s hacking abilities when dealing with more advanced locked mechanisms.

By following this structured approach, combining thorough exploration and the strategic use of B-12’s skills, you will be well-equipped to solve locked door puzzles efficiently throughout Stray.