As long as some light hit these glow-in-the-dark puzzle pieces before the power went out, you’re good to go. We have (3) GITD jigsaw puzzles, each with (200) pieces, measuring approx 59” x 12” when done. Large, easy-to-grip pieces, some as big as 3” x 2”, look normal in the light, but parts of them glow in the dark. Great for kids’ discovery/exploring skills, concentration, logic/cognitive abilities and language skills. Puzzles also come with (10) info cards in many languages. You pick the theme: Dinosaurs, Magic Forest or Ocean Life. From Hape. Ages 6+