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[PTI] Brainteaser v2.0

Difficulty: Pre-Hard, Hard. Warning! Only for skilled Portal players.

So, this is my second map in series of "Brainteaser" hard maps. Provides you more than 10 min challenge for the first time. Good luck!
Passing: http://www.youtube.com/watch?v=7xfR2oIkWB4
First map: Brainteaser v1.0
Third map: Brainteaser v3.0

Click here to download Brainteaser v2.0

I'm interested in the most difficult maps.

Hey,

was the

Spoiler
cube jump over the first pit intended? And do I need to use the cube freezing bug to solve the last two chambers
?

My Maps-1-2-3-4-5-

My PTI Tests-1-2-3-

The cube jump is the coolest thing I ever saw. Too bad it is IMPOSSIBLE to do. I tried so many times and landed squarely on the cube - however I am getting no "lift" from the floating upward cube and cannot get over the lip on the far side.

Dude... I spent like 15 mins on this... you make an explicit glitch part of the solution???