目標
按下燈泡，讓所有燈都熄滅。
規則
- 按一顆燈，它本身及上下左右的燈會切換狀態
- 以最少步數熄滅所有燈
操作
Goal
Press lights to turn them all off.
Rules
- Pressing a light toggles it and all adjacent lights (up, down, left, right)
- Clear the board in as few moves as possible
Controls
- Click a light to toggle it