In an art gallery, there are three individuals: Keiji, Ama, and Noura. The gallery room is rectangular and large, with partitions creating a maze-like environment for displaying various artworks. These partitions are placed so that there are three main corridors, running parallel to each other from one short end of the room to the other. From the entrance, which is at the end of the center corridor, Keiji enters the gallery first. He proceeds down the central corridor and stops halfway to admire a particular painting. Ama then follows, but she takes the left corridor because the first artwork instantly catches her eye. Meanwhile, Noura enters the gallery and slowly starts down the right corridor, examining the art pieces closely. There is a sculpture placed at the intersection where the three corridors meet at the far end from the entrance, but none of them have reached it yet.

All the partitions are higher than an average person's height, restricting the line of sight to only the corridor one is currently in. Each individual is so engrossed in the art that they remain unaware of the others' presence. Keiji then decides to move to the right corridor, hoping to explore the gallery in a circular pattern. At the same time, Ama, eager to see more, moves briskly towards the sculpture at the intersection and finally, Noura, quite pleased with the art in her corridor, decides to do the same.

Taking into account their positions, the layout of the gallery, and their movements, what will be the line of sight of each individual when they all reach the sculpture, and who will be able to see whom?
As Keiji starts to move from the center corridor to the right corridor, his view will be limited to the corridor he is currently traversing until he reaches the sculpture at the intersection. He will be unable to see Ama or Noura until he arrives at the intersection because the partitions block his view of the other corridors.

Ama, on her way from the left corridor towards the sculpture, will similarly not be able to see Keiji or Noura until she reaches the intersection. Her line of sight will be confined to the artworks in her own path.

Noura, walking towards the intersection from the right corridor, won't be able to see either Keiji or Ama for the same reasons mentioned above--the partitions block her sight lines to the other two corridors.

Once Keiji reaches the right corridor's end, he will have a direct line of sight to Noura if she has also reached the intersection, since they will both be in the same corridor. However, he will initially not be able to see Ama upon his arrival because she will either still be in the left corridor or just at the intersection but obscured by the sculpture.

When Ama arrives at the intersection, she will be able to see Keiji and Noura if they have both arrived at the intersection as well--Keiji from the direction of the right corridor and Noura from the opposite end of that corridor.

Noura, upon reaching the intersection, and assuming Keiji is already there, will see Keiji straight ahead as she arrives. If Ama is at the intersection or arriving at the same time, Noura will also see Ama from the left-hand side.

Assuming that all three arrive at the intersection concurrently from their respective corridors, the final outcome concerning line of sight would be: Keiji and Noura will see each other directly along the right corridor. Ama will see both Keiji and Noura since she is at the point where all corridors intersect and thus has direct sight lines down both the left and right corridors. If they reach the intersection at different times, whoever is at the intersection can see both ends of the right corridor and the end of the left corridor, and thus can potentially see anyone who arrives there. If one arrives after the others have moved on, they will not see anyone who was previously at the intersection.