Corner Aperture
Thread an L-shaped key through the chamber and into its corner aperture. The key occupies THREE cells, not just its anchor. Move it one square or rotate clockwise inside its top-left-anchored 2×2 bounding box; every occupied cell must avoid the dark pillars. Touch all three star seals with any part of the key, then exactly cover the three outlined exit cells in the upper-right. Rotation changes which corner is missing, letting you hook around pillars where straight movement fails. You have twenty successful moves/rotations. Blocked attempts are harmless and do not consume a move. The exit requires the correct position AND missing corner, not just a matching arrow.
About this experiment
Thread an L-shaped key through the chamber and into its corner aperture. The key occupies THREE cells, not just its anchor. Move it one square or rotate clockwise inside its top-left-anchored 2×2 bounding box; every occupied cell must avoid the dark pillars. Touch all three star seals with any part of the key, then exactly cover the three outlined exit cells in the upper-right. Rotation changes which corner is missing, letting you hook around pillars where straight movement fails. You have twenty successful moves/rotations. Blocked attempts are harmless and do not consume a move. The exit requires the correct position AND missing corner, not just a matching arrow. Keyboard: Tab and Enter/Space operate buttons; R restarts.