How to play: Use mouse to play the game. In Maria Solitaire, 36 cards are dealt into 9 piles of 4 cards each. The top card in each pile may be used to build up the foundations by suit, or may be used to build down the piles alternating red and black colors. The player may at any time deal a card from the stock pile into the waste pile on the right of the game screen, and use the cards in the waste pile to help build the piles or the foundations.