Flag Solitaire by SZY

"Flag Solitaire by SZY" is a game that combines solitaire and quizzes, with 175 country and region flags classified by population. Players remove two same flags if they are positioned vertically or horizontally with no other flags between them, and they get the chance to answer quizzes based on their solitaire performance. The game requires observation, patience, and strategy for success, making it both challenging and educational.