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Taking the energy pellet for a walk5 hints left
On the other side of the door, you'll find a pit of acid and some platforms dipping in and out of it.

That can't be good!

The walls are all portal-friendly; you can get to the other side without much trouble.

What do we have here?

An energy pellet dispenser, and not much else. It seems you'll need to take the pellet somewhere else.

How do I do that?

Pellets travel through portals, so you need to leave one portal in this room, and put the other in front of the activation hole.

If you forget the colour of the last portal you made, look at the gun. The light it shows matches the colour of the one you most recently created

Where is the activation hole?

At the top of the stairs in the starting room.

But how do I get back?

You can jump across the platforms, or step back through the portal you placed near the pellet dispenser - just don't let it hit you!

Guide help

This is the low-spoiler guide for "Taking the energy pellet for a walk" puzzle in Portal. Unlike in normal walkthrough, you get gradual hints on how to solve the puzzle. Click the big button below to see your first hint. If the hint contains a spoiler, you will be warned about it before clicking.

Up to "Test Chamber 14"
Hints written by Kieron West
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