John found a napkin with a drawing of the layout for Imaginative Feats that predates the ones we posted a few months ago.
Here it is:
Guarded would have occupied the center of the room, Flat Land the far right side, shielded from Guarded by a rear-screen panel. Lost doesn’t appear at all. Hardly workable this. None of the galleries movable walls figure in this layout; and the old wall that blocks the emergency exit on the lower right wasn’t considered at all.