"Alright," with a complicated map drawn before him, he took a deep breath and started recounting everything.
"C1R leads to C2, C1L leads to C4." There are four corridors here in total, and the doors that come after the first corridor lead you to the second or the fourth corridor.
"C2R is C3 and C2L is C5R." The corridor that comes after the second corridor connects to either the third corridor or the right door that comes after the fifth corridor.
"C3R is C6R while C3L is C1R." Somehow, the doors after the third corridor are either the first corridor's right door, or the sixth corridor's right door.
That means when you go through the right door after the third floor, you will find yourself in the sixth corridor and after going through the left door, you will find yourself back to the first corridor.
Technically, the two doors are separate, but this rine somehow makes the both of them seem the same.
The side you go through decides where you will end up.