You can always access the "How To Play" section by entering a tournament and tapping the "Settings" button on the bottom middle, and you'll see a few "How to Play" slides.

Here's how it works:

• Fill the 4 upper stacks with cards of the same suit, in increasing order.

• When placing new cards from the deck, the cards must be in decreasing order of alternating color. A red 9 can be placed under a black 10, for example.

• Each game is 5 minutes long, so be sure to watch the timer. If you finish early, you get bonus points!

• Not all decks can be solved, so if you're out of moves, tap "Submit" to finish the game earlier for maximum bonus points.