Light in Village

This game is a classic puzzle for those who like brain teasers and exercises for logic.

After big storm all houses in a small village are without light. Now your task is to restore lighting and turn on electricity in every house. But to do this you need your gray cells because switching on / off every house causes switching on / off its neighbours also.

Try not only solve the puzzle of every game level but also to do this with minimum of moves. Train your brain!