From The Talos Principle Wiki
Identifier: Orpheus-8
Area: Orpheus Ascending
Puzzle Type: Main
Previous Puzzle: Domino Effect
Next Puzzle: Causation Nexus

Concatenation is the eighth puzzle in Orpheus Ascending, part of the Road to Elysium expansion for The Talos Principle 2.

Puzzle elements


As you enter the puzzle, you find yourself in a large open area. There is a connector just to your left. There is a pressure plate in front of a blue door, behind which is a blue emitter.

To the left are two areas. The first area, which we can call the "red area", is blocked off by a purple barrier. Inside are two connectors, a red emitter, and a purple barrier. Through this purple barrier is a corridor with three fixed connectors attached to three red receivers. This same corridor and the connections extend through a small window to the second area, the "blue area", where there are two more fixed connectors attached to two blue receivers. This blue area is accessible freely from the main area. Right next to it is a blue door that controls access to the Sarabhai Fragment.


A basic hint:

[ hint ]
Like the four puzzles before this, you have to worry about chains of connectors. Keep thinking about which connector is primary, which is in position 2, and where the beams are meeting.

If you are hunting for a source for blue light:

[ hint ]
Notice that the connector outside can be placed on the pressure plate, and the end of the chain of connectors is visible from it.

If you are one off:

[ hint ]
It looks like your blue light is too strong, compared to your red light. Can you add an extra hop to your blue light? Do you have an extra connector somewhere, even if it may be in the area not corresponding to the color you need?

A cheesy solution:

[ hint ]
This solution is likely unintended, but it is possible to position the red connector exactly right so that it connects directly to the second fixed connector on the red side.