World Map 30 X 32 Puzzle by Cities With at least 1 Million People

Type a city whose urban agglomeration holds at least 1 million people: its piece and the ones around it (within a 'radius' of 2) appear. Pieces that aren't reached by any city are shown at the start. Pieces that are only reached by cities that aren't in the Top 250 and that are 2 pieces away are shown at the start, too.
List of cities taken from - to learn the 250 largest ones try this quiz
City latitudes and longitudes from
A big thanks to Quizzer6794 for teaching me how to avoid horizontal gaps between pieces, eg see his US State Picture Puzzle Game #3... does anyone know how to remove vertical lines too?!
Quiz by scambigol
Last updated: March 8, 2016
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First submittedMarch 8, 2016
Times taken2,297
Average score70.7%
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Level 85
Mar 8, 2016
Is there a ginormous gap just east of Florida? That's confusing.
Level 77
Mar 8, 2016
Level 74
Apr 18, 2019
I just took this quiz, and rather than filling in the map, it just flashed green where the pieces I had guessed were and then stayed blank white. I still enjoyed the quiz, but I assume that's not how you intended for it to work.