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Magnetized sliding number puzzle — the classic 1–15 slide game with numbered tiles that stick instead of spilling everywhere.

This is the old-school 1–15 sliding number puzzle, but magnetized so the tiles actually stay where you put them. Slide the numbered squares around a 4x4 frame to reorder them, or just noodle around until something clicks. It looks simple, but it pulls that weird mix of calm and tiny panic that makes these puzzles oddly addictive. The numbered tiles make it easy to track moves, and the magnetic hold means it travels without the pieces scattering in your bag. Fun to fidget with on a couch, a plane, or when you want a hands-on break from screens.