I am stuck on the section C second floor wall puzzle with 4 red double beams and 3 blue switchable beams. I've been trying to find a working solution for several days now.

I'm in D-Section and i had already to look up for solutions for 2 puzzles - maybe more to come!? In a game this diffucult, there should be some hint system, e.g. a 3 stage help, which places some "key"-cubes in a fixed position, so you can easier build the rest around it. If my life would be dependend on solving all the puzzles by myself i would create a program which brute forces the solutions. The emotional reward after solving asuch a puzzle is to small for me, that i would invest hours of (re)thinking...

I've played all rethinks except RTE4&RT4, and enjoyed them all(gonna play the rest soon). Puzzles are great and I'm in love with the art style! If there will be a future rethink game, it'll be cool if there was nighttime, or even a day&night cycle. Since this game has lots of LED light decorations(as well as lots of lazers while you solve puzzles), I think nighttime in rethink will look very pretty :D...

After completing the game and saving in the area after world E, I tried to reload my save and it just sends me to an area outside of the map. I'm unsure how this happened

Got all of the diamond keys but haven't been able to get red back for the 3 Xs