In one of the old books you found some strange name Malacadabra. It intrigued you and you decided to ask a familiar historian what it means. He became interested and offered to come to his house to look for information in his library. You arrived at the appointed time, but your friend was in a hurry somewhere and left you alone, while he locked the door and left. At first, you didn’t worry, but you started searching, but you didn’t find anything similar. It's time to go home. And the door is locked. We'll have to look for the key. The professor must have a spare somewhere. Start your search again, but now with a completely different goal in Malacadabra.