math stories with gruesome but removed deaths. exe. you are in a square room with four sheer walls on each side. Each wall is 4 Feet wide and and buried an undetermined distance below the dirt floor. How far down would the prisoner be able to dig in hopes to tunnel under the walls and what type of material would be necessary for which distances. (solution, stairs?) trick question, give an impossible number down to reach and have the solution be that there is no roof and you must build stairs to climb over the walls