Really cool idea! Would love to see some more complex puzzles!
Just needs slightly faster pacing and better end screens (Though I understand given the time constraint lol).
I like that it's a bunch of different windows, makes it feel like you're using multiple software to hack into the different aspects of the building.
But also I'm not sure I understand how to navigate around. I tried going to the supply room door on the first level when I was in the hallway and my agent said "Sorry I can't find that"
As a chess enjoyer, love the idea! I think you're right about what you said in the jam notes though, that the 8-bit style makes it difficult to read.
Also I found myself spamming pause to process what just happened: Maybe it would be better if after each person plays their moves/illegal moves you had to pick which illegal move they did OR state that there were no illegal moves. Then maybe add a timer. (I might be armchair developing too much lol).
Still a great idea and I enjoyed it!