Room B4 (2) "Offset"

The receivers are on opposite walls again in this room, but offset from each other.

Because of the orientations of the arrows, there's only actuall one way to split the particle.

Once you've got the particles travelling in opposite directions you'll find that one or both particles need to change direction twice to reach their receivers.

However, there's only one additional arrow in the top half of the room, and one in the bottom half.

From the points of view of the particles, which directions do they need to turn in to reach the receivers?

If you've found that one particle doesn't need to turn at all, consider that both particles are linked. You might want to find an arrangement where they are able to mirror each other in their movements.

You should find both particles need to turn right and then left. You can use the fact they're linked to achieve this.

If either particle passes over an arrow, the other will also be affected. You can therefore make both particles turn right and then left with the two available arrows.

Use the right-arrow at the top of the room first, then the down arrow in the bottom half.