Fun bonus: it can't seem to figure out what's going on with the knight. Using "K", "N", or "S" for knight all get me "invalid notation" warnings. I'm having a lot of fun.
New update: got the chess answer! It will accept "N" for my Knight iff I make stupid moves with it. Moving my knight to take a bishop is "invalid notation", but apparently putting it in the middle of nowhere to be captured by a rook is the best possible move.
Final update: Paul died in a fire. :I
My favorite simple one: "Unlike whiskey, you can't water water down."
My favorite long one: "I want to put a hyphen between the words Fish and And and And and Chips in my Fish-And-Chips sign"
https://5tephen.com/loopdeloops/