They are meant to store some of the cards when they block your game. When you are out of moves, use empty free cells.

Each of the four foundations starts with an Ace. The goal of this game is to assemble foundations. Sort them in descending order of alternate colors. Start sorting cards on sequences on the tableau. The more carefully you plan, the easier it will be to solve the game. This game doesn’t have a time limit, so take your time. At the beginning of the game examine the cards and try to plan your moves. This makes one think FreeCell is pretty easy, but it can be challenging. They say that only a few deals of FreeCell are unsolvable. One of the favorites of all times is FreeCell Windows XP. Solitaires continue to be very popular and the newer versions of Windows also include a variety of these games.

Probably it’s the reason why Microsoft added them to the older versions of Windows in the ’90s. Solitaires are great games to train your patience and attention.