[SP] Beamchain
A small difficult puzzle for hardcore portal players.
Note: As all my maps, this may require rather advanced techniques.
v1.1: Removed an alternative solution.
File Name: sp_beamchain_v1.1.zip
File Size: 2.2 MiB
Click here to download Beamchain
Nice and dificult map. Really need to think. But I can't finish it.
And need your help, what to do. I've enabled light-bridge, but how to put second cube on the botton?
By the way, why there is laser in the middle of the map, that enables itself?
Uh-oh... Time to spend another entire day (at least) on one of your puzzles 
Finally! I solved this damn puzzle. I hate laser puzzles. I told myself, Baca don't you go downloading another laser puzzle, your going to be stuck in there for a hour or more. Should have listened to myself... Well, anyways... it was a challenge and I solved it, and I don't think it is the intended solution because if it is, then good luck to everyone else. LOTS of trial and error for me.
I'm adding the recording (DEM file) of the final setup I had in order to solve this thing. Never used a DEM recording before, so I guess you can put it in your commmon > portal 2 > portal 2. file, then double click it, when portal 2 is closed.
You also don't seem to be concerned with looks. Bland walls / Ceilings. No lights. Some Flickering textures. If you're going to have people stuck in a room for an hour, at least put a little more effort into the detailing.
Mapping Since May 21, 2011
Your dem dont seem to work for me.May of done it wrong but dont think so.It didnt work on portal 2 folder or any sub folders in portal2
Edit:Now that I think about it you may have to name the dem as the same as bsp so it can grab the info needed to play
It worked for me by just typing "playdemo lazer" into console. Baca, Yes you are correct I'm not too concerned with looks. I will fix the flickering textures in next version though. The solution is not the one I intended, still very clever. Well done. I'm a fan of only having one solution to a puzzle though so I might remove this option in future version.
I want to see the intended version.
Mapping Since May 21, 2011
Great level! I've succeeded at almost every combination I thought of except getting the cube up to the pad. Used either lightway or tractor beam to get up there, but not with a cube. I also managed to get both fizzlers turned off with self feeding lasers, but that didn't help at all.
anyway the demo doesn't load
] playdemo lazer
Playing demo from lazer.dem.
SignalXWriteOpportunity(3)
DataTable warning: No matching RecvTable for SendTable 'DT_InfoPortalScore'.
Host_Error: DataTable_ParseClientTablesFromBuffer failed.
Well, i'm assuming the solution involves those special entry-exit lasers but so far my attempts didn't utilize them. I don't think it's possible to hurry along and get in the tractor beam with a cube to get high enough to place a light-bridge parallel to the door cube-pad and land on it.
Maybe one should use both cubes first to somehow place portals to be able to do what i wrote above. A portal on the would-be light-ridge panel. But i doubt it's doable.
So back to the special lasers. While you can't direct the middle laser path with a cube after you 'turn it on', you can
it is possible (and I've done it)
1. sustainably activate tractor beam and use it to get to the pad (but it requires both cubes on the floor)
2. activate main laser with the button then rush to the beam and get high enough to shoot light bridge to walk to the exit door. But it requires one cube on the laser pad and the other cube on the floor.