The game uses 1 pack of cards.
Foundation (4 stacks). Build in suit and up, e.g. a 10 goes on a 9.
Tableau (7 stacks). Build in suit and down, e.g. a 9 goes on a 10. Move sequences regardless of suit regardless of rank. Only a King may be placed in an empty tableau. Completed sequences of cards may be moved together.
Wikipedia