One way to avoid this element of surprise, for those who do not enjoy surprises, could be to have only a single key whose action upon clicking would simply be the most probable next action.
It's not that bad. I'm sure there are more LLM'ers in there than the one, but you can tell that the majority of the day 1 leaderboard is made up of people who have historically performed well, even before LLMs were a thing.
There was also at least one instance of people working together where you would have 15 people from the same company submit solutions at the same time, which can be a bit frustrating but again, not a huge issue.
Okay, I think I have to go ahead and retract my own comment. Day 5 appears to have been sufficiently tricky for humans to do quickly while still easy enough for the LLMs that it is clear that there is a very large amount of cheating going on.
ImageMagick in Wasm lets you do lots of nifty stuff client-side. Here's a photocopy simulation thingie I made for instance: https://photocopy.fuglede.dk/
