The phrase "to impress the judges" means to try and make the judges think highly of you by doing something impressive or outstanding.
Sentences with «to impress the judges»
The game impressed judges with its interesting art direction and moving story, which features player choices that have a meaningful impact on the narrative. (thevirtualreport.biz)
This imaginative approach and focus on the wider and global community impressed our judges. (educationbusinessuk.net)
Why the team won: The clarity of the team's idea impressed the judges. (education-today.co.uk)