May 12, 2012
So Mark Nabors made a portal level called Puzzle Trifecta and asked people to try it out. So I had a go.
Don't watch this if you haven't played the level and intend to.
No sound I'm afraid.
The first time I played the level I dropped the sphere down the hole and thought I'd got stuck. I eventually figured out this solution which I'm pretty sure isn't the intended one. I place 5 portals in this video but one is just a slight adjustment. I didn't realise until I'd almost finished uploading but you only actually need to use 2 portals.
Edit: Removed the detail on the 2 portal solution.