They apparently just eased up on level 222 which was formerly the hardest level -- now you don't have to spread the cheese to ONE tile which means the stone in the lower left can be ignored if needed.
You still need to clear the stopper and the bomb but that really stone is not nearly as big a problem if you can leave one un-cheesed.
Level 222 difficulty reduced again, by removing the Exclamatory! Blocker in the upper left corner.
King has nerfed Levels 167, 173, 191 and 238 before
Interesting, elsewhere I posted asking if anyone remembers the move count for 170.
Last night I was replaying it to help others on Facebook and 45 moves seemed like a lot more than it had before (plus my bonus moves for 47.)