In fact I needed 3 cubes only to complete it. Good chamber, not too difficult. Thumb up.

Thank you for the feedback, I see now what you are saying. I changed the puzzle without rethinking it. At first I had no access to a couple of the cubes on the platfom, but I found occassionaly the movement would move the cube out of alignment, so I gave you access to readjust it, but when I did that it also gave the ability to reuse it somewhere else. Thank you again, I will now rethink what players might do that wasn't planned.

Pretty good for a chamber involving no portals at all. However, 2 of the cubes and anything associated with getting each of thoese cubes aren't needed to complete the puzzle, only 3 (possibly 2 if I play with it a bit) laser cubes and the standard cube are necessary. Given that this puzzle is entirely based on lasers, I suggest making these other cubes necessary for the puzzle. Other than that minor issue, that was rather fun.

I've got a little collection of chambers going and I'm always interested in feedback. I'd be grateful if you'd have a look:
Elementary