Lights Out

Press cells to turn every light off — each press flips the cell and its neighbors. Always solvable, with hints.

Turn every light off. Pressing a cell flips it and its four neighbors.

0 presses

Every puzzle is generated by real presses, so it is always solvable. Runs entirely in this browser.

How to use

  1. Pick a scramble difficulty.
  2. Press cells to toggle them and their neighbors.
  3. Get every light off; use a hint if stuck.

What it supports

5×5 grid; scrambles are generated by real presses (8/14/20), so a solution always exists. The hint names one cell from a solution — it does not autoplay the rest.

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