How many of the 20 largest cities in my country have I been to? W-wa ✅ Kraków ✅ Wrocław ❌ Łódź ❌ Poznań ❌ Gdańsk ✅ Szczecin ❌ Lublin ✅ Bydgoszcz ❌ Białystok ❌ Katowice ❌ Gdynia ❌ Częstochowa ❌ Radom ✅ Rzeszów ❌ Toruń ✅ Sosnowiec ❌ Kielce ✅ Gliwice ❌ Olsztyn❌