Simply superb.

to much for me. oh well

This puzzle is full of surpsises that make you scratch your head!
A great puzzle, expecially for those who like a challenge in Portal.
Gread job!

PS: couldn't help recording my passage:
https://www.youtube.com/watch?v=3tLBqi-qhe4

What a puzzle, last move... congrats.

A bit big for my little legs and quite difficult to imagine the final solution ..
but still a very good and challenging puzzle, good job.

A bit overwhelming at first, but a well designed puzzle. The re-use of elements was great.

I just got back from holiday today, eager to play it.... but oh God! what an amazing experience! Another neverending tricky adventure, Chander! IMPRESSIVE PUZZLE! I can't think of a better welcome than this incredible puzzle! haha.

I loved it from the beginning to the very end! EACH AND EVERY SINGLE MECHANIC I HAD TO FIGURE OUT AND PERFORM! Specially loved all that reuse of the elements, and the fact that EVERY element had a purpose! Also, the last move, man, it took me like 1 solid hour to figure it out! But it is SO rewarding! YAY!

Hats off, again!

THANK YOU, MAN. THANK YOU FOR CONTINUING MAKING THE BEST PUZZLES EVER!

My Solution

Cheers! :D

I fix trick jumping

About tricky portal jumping, you could stand in the portal on a white wall and gradually gain height by jumping and re-shooting the portal. That feels like cheating though and it's annoying to execute. Here's how I did it: http://youtu.be/zZ0zstyXGjk

Thanks cyhborg, I fixed the unintended solutions in ver. 1.2

portal offset method: https://www.dropbox.com/s/bj4t916i8r0gsy4/ct28h.dem?dl=0

cube throw method: https://www.dropbox.com/s/y999xl1mp4jzgyl/ct28g.dem?dl=0

@Calmly Frenetic: Ah, why didn't I think of that? I knew the panels were for closing the portal , but I couldn't figure out how.
@ chander: With my method of getting the cube (https://www.dropbox.com/s/1n6mt57wznq0ecs/ct28b.dem?dl=0) , the gap above the glass isn't needed. By closing that gap, you can prevent players from throwing the cube .

thank you. almost all intended.
Is there a map of complex tricks and where?

Here is my "intended" playthrough:
https://dl.dropboxusercontent.com/u/105092049/chand28_cf.dem
I'll let the other guys show you the tricky portal jumping , etc.

Guys if you can record a demo version of your solutions.
And thanks for playing!

I saw that the portal-climbing method was a possible alternate solution, and it reminded me of your Test 24. Then the intended solution revealed itself.
Great test, as always!

Another method: I placed the blue funnel on an angled panel in the main area, lifted myself and the cube, stood on the glass and threw the cube onto the button that contols the funnels. Now with the orange funnel, I went to the upper room and created a new portal away from the funnel. I went back to the main area and pressed the pedestal button to generate a new cube, then went back to the upper room, grabbed the cube before it hit the fizzler, and threw it down to the main area. I then juggled the cube like toncica .

I solved it by placing the portal for the funnel in an offset position. I went through the portal to go to the main area, then I placed a new funnel portal on a wall and forced the cube back into the portal, making sure it does not pop back out. I placed the funnel portal on the angled panel and stood on the button to close the portal. Then I made a new portal above the light bridge button . It's very fiddly, so it doesn't seem intended.

I have the same problem as cyhborg, didn't see a way to do that. I finished the chamber but it was certainly unintended. Instead of using the blue funnel to get back to the big room from the starting area I did some tricky portal jumping to gain the height until I could land on the grating. then I used two floor portals to juggle the cube (one of the portals was on the flip panels so I had the cube in sight) and let the cube drop onto the light bridge button, then I got the funnel and finished.

How do I delay the cube in the funnel long enough so that I can direct it to the button that controls the light bridge? I've tried using the ceiling to drop the cube into the funnel but I don't have enough time to fire a portal at the ceiling above that button .