Yes, when making this game my brain had bit of trouble understanding how to interpret the theme. And just settled with the idea of 'puzzles = passwords'.
In retrospect I now realise I could have flavoured the game as hacking a firewall instead of digging a mine, and the gameplay could have been the same. But by the end of the day I had a lot of fun designing this game with the constraint of working within a single gradient for the graphics, which was the entire reason I wanted to take part in this jam.