Marsh/First shortcut door

Localization: in the metal structure upstairs.

Name of the puzzles in the game files:.

Description: On this door there are two puzzles that also have red backgrounds. They use the same polyominoes in the same corners, and only differ by their grid size (5x5 vs. 4x4). The left one requires you to place the polyominoes in the corners, each polyomino used in an area of is own, as in Row 1. But in the second puzzle you have to use the same strategy than in Row 3: inverse the position of the polyominoes and put them all in a same area.

Manifestation of principles: The red background signals a use of the principle of connecting distant or separated elements, which is appropriate for a door. These two puzzles also provide another take on the analogy between puzzles and environment, as they represent the two states of the door: At the beginning (first puzzle) the door is closed, and the two areas on each side of the door are disconnected, as are the areas containing polyominoes in the puzzle. But in the second puzzle, the areas are now fused and the door opens, connecting the two world areas that were previously separated by the door.

Relation with other areas: Other door puzzles work in a similar way in the Quarry: the two doors near the dam (first door has an S-shaped black-and-white puzzle with the central black area separated in two by the line, but the second door has a serpent-shaped solution that uses the logic of Row 3); and the two starting puzzles in the sawmill.