The base game is 75% off at the moment. I've played the game for around 50 hours before I got the DLC and think it's one of the most underrated 4x games, especially if you like cozy gameplay and a good story.
I'm a new chess player and do not understand why the solution to this puzzle is Qc2+ instead of something like Rb8, Qf5, g4 I don't really understand what black could do here to save the Queen?