This quiz is infuriating because I love the subject matter but it is misleading - it includes the Condorcet class of French pre-dreadnoughts and it selectively includes ships completed during WW1 not just before - and above all, it is IMPOSSIBLE to complete in the time limit.
Austro-hungarian 'Radetzky' class, French 'Danton' class and Japanese 'Satsuma' type, although they were built after 'Dreadnought', can't be considered as dreadnoughts, as they all had only 4 12 inch guns. All-big-gun design with at least 8 11-12 inch guns is a key difference between dreadnoughts and pre-dreadnoughts
Hindenburg, Szent Istvan and all of the Russian ships were completed AFTER the outbreak of war. Blucher wasn't even a battleship or battlecruiser - despite serving with them - it was an armoured cruiser so shouldn't be on this list at all.