These are some reasons your rating decreases when you win

1. Your game should be normal chess or chess-960. No any bug-house, crazy-house or king of the hill etc.!
2. Your rating should be at least 1000.
3. You cannot play with an opponent multiple times during a 24 hours period after playing with him/her.
4. Your game should be a live game, not a daily game.
5. Your game should be played on /play, not on /live.
6. You should have your account activated, played 10 games and have for at least 48 hours.
7. Your opponent shouldn't be a friend to you.

Your rating doesn't decrease when you win.

And more, the game should be a play, or rematch.

Bruh see my archive

I did. I didn't see any games where your rating went down when you won.

You may be confused when you switch time controls or types of chess. You have separate ratings for :

• blitz-- 488
• bughouse-- 328
• rapid-- 501
• puzzles- 339

Games against bots aren't rated. Your ratings won't change after a win or a loss against a bot.

And there are ratings for Chess960, and each of the variants.

Anyone? Rickroll @justbefair, please!

At the start of each game, an automated message is posted in the chat saying how much rating you'll gain or lose if you win/lose/draw. It's always an increase on a win and a decrease on a loss (rating adjustments on draw tend to lose a small amount for the higher rated player and gain a small amount for the lower rated one).