Colony House

There are numerous houses in this colony. The Secretary of the colony has the spare keys of all the houses and the main gate of the colony but he is not available now as he has left for a vacation. The gatekeeper appointed to be at the main gate has locked it and has gone. He will only be returning tomorrow morning. Now, you have to go out of the colony in order to meet your relative who is hospitalized after an accident. The only way left is to get the spare key but it will not be easy because no one knows the exact location of the key. Use your skills and solve a series of puzzles to get what you want.