1# Lights Out23Toggle lights in a cross pattern to turn them all off.45## Rules67- The grid starts with some lights **on** and some **off**.8- Toggling a cell flips that cell *and* its four orthogonal neighbors9 (up, down, left, right).10- Cells on edges and corners have fewer neighbors, so fewer lights flip.11- The goal is to turn **every light off**.1213## Controls1415### Keyboard1617| Key | Action |18|-----|--------|19| `Arrows` / `wasd` / `hjkl` | Move cursor |20| `Enter` / `Space` | Toggle light |21| `Ctrl+H` | Toggle full help |22| `Ctrl+R` | Reset puzzle |23| `Escape` | Return to main menu |2425### Mouse2627| Action | Effect |28|--------|--------|29| Left click | Toggle light (and its neighbors) |3031## Tips3233- **Toggling the same cell twice cancels out.** Every move is its own34 undo, so if you make a mistake, just press the same cell again.35- **Work row by row from top to bottom.** Turn off all the lights in the36 current row by toggling cells in the row below it, then move on. This37 keeps solved rows from getting scrambled.38- **Plan around edges and corners.** Corner cells only affect two39 neighbors and edge cells only affect three, which limits your options.40 Tackle these constrained areas first when you can.