Very tricky puzzle. I loved it - one has just gotta think this one through to get anywhere, and look for the slightest sliver of a portable surface. Thank you very much.

I'm sensing a theme in your comments! Thx!

Amazing puzzle!

:-)

Okay, I think I tried waaaay to hard, since the solution was right in front of my eyes. But, in your words, I tried to "investigate" :D

Very well done map. Not the hardest map, but definitely tricky here and there.

I think I found a way to get stuck: one can place a reflection cube the way it activates the bridge, then use one of the "upper" portalable surfaces to get to the "second" room, without actually placing both cubes by careful jumping. Since there is no button to reset the reflection cube, I *guess* it is now impossible to complete the chamber. See screenshots in my profile.

As the title implies, it's an investigative test chamber. You have to look around to find something hidden to proceed.

I'm not even sure where to start. I see no cube and only 3 portable walls within reach, none of which lead me anywhere. The only button I can operate opens the stairs, but I can see no way of holding it down.

How am I supposed to start again?

True and definitely took more than 7 minutes :)

I take that it challenged you so as a compliment. I don't like making tests people can beat in 7 minutes or less.

Man I feel like such a noob after completing this map, I consider myself an expert to Portal, but clearly I'm not! :)
You should try "Prince of Persian Portals!" - just as hard!

Okay, Myke, I believe I've patched it up such that those methods you used to break it can't be used any longer. Thank you very much for the demo and your incites.

Sorry dude, i can still be trapped if i go take the reflector cube in first ! And i still don't use the second stairs...Not cheating...just with portals ! Even not ninja way :)

Thanks for the pointers, SM Myke. I did recode it to include an initial cube recovery method. However, the second staircase is usable. Here is how: You can lean the laser cube against the cube trigger to get up the stairs. Then, kneel down at the top to grab the cube up to the upper level. It's a cheaty method used by many chamber makers.

Ok, this one was a cool test but you can improve it little bit :) For exemple, we can be trapped in the entry door area when the panels are closed if we want make a new cube, also, the stairs which must be activated with teh 2 buttons are useless. So, this is a very little things and i think that will be easy to fix :) Good test, even i'm not very fan of hidden things, but the name of your map say all, good job ! Maybe you want try my "best test ever" lol : http://gtm.steamproxy.vip/sharedfiles/filedetails/?id=276913655