The Plane

to talk.”

“What do you see?”

“The same as you.”

“Okay.” Cold turned around, paranoid of something sneaking up from behind her, even though there was no sensation of danger. “What do we do?”

“I... I...” She stocked. “Look around for others?”

Cold nodded, then she remembered that she wouldn't be able to see it. “Alright.”

Slowly, carefully, Cold walked ahead. The landscape didn't change; there was no sense for direction or space. After a while, however, a distant glimmer came into vision. As she got closer, she made it out to be the outlines of two geometrical shapes on the ground: a rectangle and a circle, both radiating in the same bright blue light.

“It's a puzzle. A set shall hold any number which can only be divided by one or itself. If this set has infinite size, step into the rectangle, if not step into the circle. Guess wrong and you die.”

“Do we have to solve it?”

A small pause.

“No. It's optional. But it will benefit us.”

“How much?”

“I have no idea.”

“Do you think we should stay and try to solve it?”

“I... I don't know.”

Cold bit her lip. It was hard to decide on a course of action with so little information.

“I think we should keep moving...” she mumbled. “Do you think we can find the way back here?”

“Not if we go too far away. There is nothing to help coordination in this place.”

“Alright...” Cold took a deep breath. “How about you think about it, and I'll see if I find something else? I'll stay close enough for us to find back. If you think you aren't going