Accordion Solitaire is a more difficult, more strategic variation of solitaire. Starting with a shuffled deck, you will draw cards and make decisions about how to stack them based on matching ranks and suits. Cards can only be stacked when a stack is adjacent to a matching rank or suit, or when a stack is separated from a matching rank or suit by exactly two other stacks. The goal of the game is to begin with one deck of cards and end up with one stack of cards.