https://chromewebstore.google.com/detail/zenchess-anxiety-free-che/jmdfkfpacfoejngpaelkcdongaaleagc?hl=en
ZenChess - Anxiety Free Chess - Chrome Web Store
Removes all Elo ratings and other anxiety-inducing numbers so you can just play for fun. No more worrying.
anxietyfreechesschromeweb