1. Open the "Best Classic Solitaire" app on your mobile device.

2. The game begins with a standard 52-card deck shuffled and dealt into seven columns. The first column has one card, the second has two, and so on. The top card of each column is face-up; the rest are face-down.

3. Your goal is to move all cards to the four foundation piles at the top, one for each suit, in ascending order from Ace to King.

4. In the tableau (the seven columns), build sequences of cards in descending order while alternating colors (red and black). For example, place a black 6 on a red 7.

5. You can move a face-up card or a sequence of cards between columns, as long as the move follows the descending and alternating color rule.

6. Only Kings can be placed in empty tableau columns.

7. Tap the stock pile to draw cards. Depending on game settings, you may draw one or three cards at a time. Use these cards to help build sequences or move to the foundation piles.

8. When all cards are moved to the foundation piles in proper order, you win the game.

9. Use the undo button if you make a mistake, and try to complete the game in as few moves and as quickly as possible for a higher score.

10. Play again to beat your best time and improve your strategy.