Solitaire Classic is like playing a fun puzzle with cards. You sort them using colors and numbers, but it's cool cause you've got to move them between lines. The rule is simple: just put black-red-black-red from King down to Ace. If you're stuck, you can draw extra cards and find a way to win. Making the right moves is important, but don't worry if you can't do it, just try again. It feels awesome when you manage to clear the whole board. It's like building a castle and then watching it disappear, all on your own! It's super fun!