I am still stuck in one of the bathrooms, and hospital ships...they are extremely challenging. I have exhausted all clues, without giving in to using FAQs.
While I dont exactly remember which puzzle room that one is (Even if I have an idea, and Im not risking spoiling the game to you by guessing it), just keep at it and try to ramke your steps.The puzzles in 999 isnt exactly that hard.
You can do it friend!
My (locked) thread about how difficulty should be a decision for the developers, not the gamers.