Baltic Sea Cities - Sudden Death

You should define more clearly where you draw the border of the Baltic sea. There are competing definitions with some including the Kattegat while others exclude it. Thus Copenhagen is a Baltic sea city in many definitions.

Also you could argue Kaliningrad is a Baltic sea city as it touches the Vistula Lagoon, so you should probably rather count it than not. At least make a caveat that Lagoons dont count or something.

Pretty poorly done and unclear overall for a Sudden Death quiz, you need to be more precise with those