Welcome to Uefa Champions League Squares - the new BBC Sport game which you can play alongside the live match action.
Answer four trivia questions for the chance to edit your randomly generated Squares bingo-style gamecard, and then see how many squares you are able to mark off when those events happen in real time that evening.
There will be a new game for every Champions League matchday from now until the end of the season.
Gameplay is limited to UK users only.
Each gameday will begin at 07:00 GMT on the morning of every Champions League matchday this season.