Not that I'm aware of. It's probably just that you've been working on your puzzles for a long time and maybe the work you've been putting in from the last month or so is just now begining to seep into your subconscious and now you are solving puzzles easier because you are simply improved.
I notice that for myself in games as well as puzzles. If I begin studying something new, or working on a weakness in my game... I don't see noticeable changes until about one month and then that's when my game reflects what I've been working on.
Hey,
Since yesterday, my puzzles on Chess.com feel noticeably easier, and I no longer get messages like “hard puzzle” or “extra hard puzzle.” Also, the XP I get seems fixed now, no matter how hard the puzzle is.
I also noticed a difficulty setting in the puzzle options, which I don’t remember seeing before.
Did something change in the puzzle system recently?