Logic puzzle in terminal dress. Unique-solution generator, four difficulties, pencil marks. Runs locally — no data leaves your device.
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What is Sudoku?
Classic 9×9 Sudoku rebuilt with a synthwave terminal aesthetic. A backtracking generator guarantees exactly one solution at four difficulties (easy → expert); pencil-mark notes, peer + same-number highlighting, live conflict detection, three mistakes before game over, and up to three hints. Best completion times per difficulty are saved on-device. Keyboard, mouse, and touch all work. No installs, no signup, no analytics — the puzzle generation and solving all run locally in your browser, and it works offline once the page loads.
