Maria Solitaire is a 2 deck solitaire card game for the Windows PC. 36 cards are dealt into 9 piles, and the remainder of the deck is used as a stock pile to keep play going when the player is no longer able to move cards between the piles. The player may only move the top card on each pile, and can use it to build down another pile alternating suit, or to build up the foundations from Ace to King by suit.