NACRE
A fine-art raden (mother-of-pearl inlay) puzzle. Lay iridescent shell into black urushi lacquer, partitioning each panel into galaxies that are perfectly point-symmetric about their pearl seeds — a serene Tentai Show deduction. Solve it and a togidashi polish sweep crosses the panel: nacre shimmers, concentric rings radiate from every seed, and the pearls bloom. Twelve uniquely-solvable panels across three lacquer settings, a live arcade demo, and a Cabinet of all you inlay. Portrait-first, pure JavaScript, no build.
Alex15520