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Lights Out
2025-12-15 UTCToggle lights. Clicking a cell flips itself + neighbors. Turn all lights off.
Moves: 0Best: —
$ how to play
Click any cell to toggle it and its 4-neighbors. Goal: all lights off.
$ tips
Try solving row-by-row. If the top row is correct, focus on fixing the next row by clicking below the lights that are still on.
$ faq
This puzzle is seeded by a UTC date. Use ?d=YYYY-MM-DD to replay an archived day. Progress and best moves are saved locally.