How do I get out of Chamber 17?

Solution 1:

You need to drop the cube while standing on the platform. The platform will be down while the cube is blocking the beam.

  1. block beam with the cube (on top of hard light)
  2. step on the platform
  3. make cube drop by redirecting the hard light
  4. beam will activate the platform, which will get you to the exit, cube will open exit

Solution 2:

With pictures (for fun)

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