Riddle # 1. Escape
Jack is trapped in a cell with an earth floor and a window so high that it is inaccessible. He has only one shovel at his disposal. It is very hot, but he has no water or food, so he has only two buyessay days to escape, otherwise he will die.
How can Jack escape, knowing that digging a tunnel is not an option because it would take him more than two days?