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Follow the metal walkway until you can’t go any further. Take a look around as you watch the next test being built right in front of you! Once you’re in the room proper, turn left and pick up the Displacement Cube. Now angle it so the laser beam is passing through both of the ‘cones’ at the same time.

Now lay your first portal at the point where the beam touches the wall and then position the second portal so it’s just to the left of the untouched ‘cone’.

The beam should now pass through all three cones at once, opening up the exit to the next test.

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Guide Information
  • Publisher
    Valve Corporation
  • Platforms,
    PC, PS3, XB 360
  • Genre
    Platformer
  • Guide Release
    30 June 2011
  • Last Updated
    7 December 2020
  • Guide Author

Share this free guide:

Welcome back to Aperture Science, a world where your Companion Cube isn’t you’re only company. Take control of Chell once again in Valve’s sequel which takes you on an humorous and puzzling adventure and in our detail-packed guide we’ll show you:

  • How to solve every test chamber first time.
  • Conquer every co-op chamber with a friend.
  • Loads of High Definition screenshots and videos showing you the solutions to every single chamber.
  • High Definition strategy videos for every achievement in the game.
  • Uncover all of the hidden secrets and Easter eggs.

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