The light switches that comprise the puzzle.

The Flashlight Puzzle is one of the major puzzles in One Leaves. It takes place just prior to reaching the elevator at the end of the school zone. It involves turning on a series of lights in sequence. If you do it correctly, you win a flashlight, which is useful for navigating the rest of the game. If you manage to win this prize, you'll find it in the iron lung machine in the back of the room.

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