the pipe key comes later (on the second floor)
after getting to the second section you need to go into the basement to get the key for that dining room door
and the hint that should have given you the code for the laser safe is in the dining room (behind the picture puzzle)
P.S. here is the logic behind that busted keypad puzzle (cut from the hint sheet i am writing)
Quote:
busted keypad safe: each button on the keypad goes through a series of 5 numbers, once you know the 5 numbers in the order that each button will display, you can set those keys so that the nest time you press the key it will give you one of the numbers in the solution
(contains - keycard)
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also note that the machine and the fountain puzzles cannot be completed untill later in the game
