Neon One Line

You're the new apprentice at a small neon workshop on a rainy city street. Cafés, bars, bookshops and noodle stands bring you designs for their signs. Your job is to turn each one into glowing glass. ONE TUBE, ONE LINE A real neon sign is made from one continuous bent tube, with an electrode at each end. So every design is a puzzle you already know: can you draw it in one line without lifting your finger? Trace the tube along every line, from one end to the other. COUNT THE ODD DOTS Each corner shows how many lines meet there. If more than two corners have an odd number, one line won't do. Go back over a line and paint it black so it doesn't glow, or start a second tube. Find the cheapest way, and save glass, paint and money. LIGHT UP THE STREET Press Bend and the glass heats and curves into shape. Then the sign goes up over the shop door, the switch clicks, and it flickers to life in…