Just like you did when you first arrived, you put your whole weight on the door and twist the handle as far as it will go. Nothing happens.
You don't give up, groaning as you shove yourself face-first into this unmoving slab of wood. Your shoulder is cramping and your feet are starting to slip, with no sign that the door will ever open—but just as you're about to slump backwards, defeated, the door gives way by a millimeter.
Standing back, you test the door again normally and find that you can now push the door inwards by the tiniest amount imaginable. It seems from this that the door isn't locked after all—but rather that something is blocking it from the other side. Something very heavy, or very hard.
You figure that if you're ever going to get behind this door, you'll need to be much, much stronger.
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