"If it's an experiment," said Heiji, looking annoyed, "It's got about the shabbiest scientific method I've ever seen. It's true that we haven't been able to find a way outta here, though."

He jabbed a thumb at the large '9' door. "Supposedly, that's our ticket out of here. But no one can go through it until they've got 63 BP. That's gonna be a long while yet, the way things've been going."

"As far as puzzles go... well, can't say there aren't any dangerous ones." Heiji sort of looked askance as he said this, unwilling to scare the new arrival too much just yet. "But ya just gotta be real careful and don't try to force 'em. So far that's the only thing that's got someone hurt."

And in fact there was actually a tear in Heiji's jeans above the knee, through which bandages were just barely visible.