Even knowing it's only 1 letter difference, when you're stumped, it's hard to progress at all, and also stops being fun.
Some of the earlier ones i moved several letters on occasion, because that's what worked for me.
Viewing post in MatchBreaker jam comments
Got it, thanks. It's helpful to know that the "move 1 or 2 letters" advice isn't necessarily good enough. Now that the jam voting is over, I've updated the game to use a new hint system to Chapters 2-5 which hint at which letter(s) should be moved. Hopefully this helps future players from getting stuck. Thanks again for the feedback!