Name the 50 largest US cities per the 2010 Census. For the first column (#1-13) you only get a 1-ranking 'mine-free zone', 3 for the 2nd column, and 5 for the 3rd and 4th columns. SEE NOTE BELOW.
NOTE: As an example, if you are guessing the city ranked #15, as it is in the 2nd column you get a 3-ranking mine-free zone...meaning if you guess a city ranked #12-14 or #16-18 nothing will happen. The next 5 positions outside that will end the quiz (guessing a city ranked #7-11 or #19-23). You can click any answer to go to it, no need to answer in order.