Your goal is to win! You win the game when you move all cards to the foundations (the 4 empty piles in the upper right corner). You must start each foundation with an Ace. Then you can place cards of the same suit in ascending order: Ace, 2, 3, 4, ..., 10, Jack, Queen and King.
Note: Thoughtful Solitaire, also called Saratoga Solitaire, is exactly the same card game as Klondike, except all cards in the tableau are “visible”. Face down cards are simply grayed out so we can tell which card it is. Thus, the probability of winning should be better (around 82% according to Wikipedia).
Cards are shuffled and 28 are dealt on the tableau (the 7 piles in the bottom of the screen). The remaining 24 cards form the stock (top left) and the game start with one card turned from the stock into the waste pile.
When all moves are done, you turn one card from the stock to the waste pile before playing it to a foundation or on the tableau if suitable. When the stock is empty, the cards from the waste are reused. You will know when you have lost.
Simply click the top left title to play a new solitaire game, or use one of the menu commands: