Description: Turn all the lightbulbs off by clicking on any bulb.
The lightbulb you click and the bulbs below, to the upper left, and the upper right, each toggle state.

History: This zrf is derived from the Turnoff.zrf included with Zillions.
The board is modified from my earlier Solihex.zrf game. Piece graphics are borrowed from Zillions v1.
Puzzles similar to this have appeared in games like 'The Seventh Guest' and Tiger Electronic's 'Lights Off'.