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I found an unintended solution to the third room using the button to angle the reflector cube towards the receiver (you have the laser portal lined up with the rc) and then you jump off the button into the funnel which takes you through the portal which leads outside of the room

My favorite execution of the 4-portal concept (though I haven't played Mevious' "Dyad"). Chamber III is too finicky, and Chamber IV's timing is too tight - but overall, this is a fascinating, mind-bending map.

Love this, but the last room requires to many difficult portals, and I can't really autosave while doing timed flinging.

Thanks!
And yes, your screenshot shows the intended way of leaving room 3.

Very nice map. I really enjoyed the concept. The third room gave me some trouble. I found one solution that's obviously unintended, and one that might be intended. Is this the intended setup for the end? Either way, big thumbs up.

And thanks to you, too, LB. Good seeing someone ride that old horse :)

Great map! Like nock, I also got a request to play this from quaternary. Here's my blind playthrough: https://youtu.be/h3WdxReI6j8?t=2m3s
Very innovative use of dual monoportals :)

Thanks for playing, recording, and commenting, nockscitney! It was good to see someone play this map after all that time...

The missing glass piece is just to make the setup for the exit move a little easier ... if you locate it as you did ;)

Very nice map - Was recommended it by Quatnary. Had the most trouble with the 3rd chamber (took a while to work out the right order), but think I solved everything as intended. There was some funny things going on in the world in the final area, in the top bit where the cube was (you'll see if you watch the vid), possibly world portal related. It was also possible to shoot into the cube area from the lightbridge once you've opened the fizzler up with the cube - not sure if that was intended or not, but if it is meant to be allowed, I'm not sure there's much point in having the glass up there in the first place . Again, it's in my video (link below) if you want to see that I mean.

https://youtu.be/t7CkF4uLJBg?t=1m21s

Thanks for playing, jgaultney!
As you may guess, there's a lot of Hammer logic involved in this map and it was bound to happen sometime ... ;)