Presume a situation, there exists a most wanted robber in the city. He was famous for his theft and his talented escape. So far, he was succeeded in ninety nine thefts. Now he is on his hundredth theft. So, he planned to steal from the Marshals house, when his entire family was on a vacation. Somehow he entered the Marshal house through the chimney liner, but he can not get out through the chimney liner.