If you’re stuck on a slow train and need a quick mental break, give Solitaired...

https://cruzinnp079.tearosediner.net/the-quest-for-variety-which-solitaire-site-actually-respects-your-time

If you’re stuck on a slow train and need a quick mental break, give Solitaired a try. It is my favorite for fast, no-login play that gets you straight to the cards. The best part is the massive variety of games, so you never get bored