Several illegal casinos are located in a small forgettable city near Berlin. There is also one bar there, where an entrance is only for a certain group of
people. You and your friends have decided to go to the bar for a few drinks. You are there drinking; suddenly, your old friend Boris has approached you and asked: “Where are the money you owe to me? You have one hour to bring my money back!” Unfortunately, none of you have such a huge amount of money; and you have no idea how to get this amount of money. Therefore, you have only one choice to try your luck out at the casino.