Why did my opponent lose 18 points?
This was an extremely short game with an opponent who was extremely .... In need of some puzzles and basic lessons. I know Elo goes +/-8 points when you win or lose, and up to 100 and something if you're playing your first 5 probationary games but my opponent had a 3 year old account (with almost no games played but still around 200 so well past their first 5) I won , got my 8 points but they lost -18 I've never seen that before, what causes it ?