Quite the fun game that you have produced here for your first jam, nice work! I found the third combination to be quite specific even when I had the combination correct. Out of curiosity, did you run into scope creep during the jam (where the concept of the game became too big to finish under the deadline)?
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Actually, most of my trouble came from the idea itself. For some reason, my code would not work, so nearly half of my time spent was in the main mechanic's bug itself.
Sorry if the specific ones ended up not being completely taken; the way that I checked for a win state is completely arbitrary to the actual final state and looks more at the arrays that may or may not be bugged in the level. I had to leave it like that due to a lack of time.
Thank you for your kind words and playtesting!