2 decks. Easy. 1 redeal.
S Solitaire< uses 104 cards (2 decks). 13 foundation piles are arranged in the form of the letter 'S'. Thirteen cards (7, 8, 9, 10, J, Q, K, A, 2, 3, 4, 5, 6) are dealt to foundations (one card to each pile) at the start of the game.
Turn cards from the stock pile and place them onto either of two waste piles. Cards cannot be moved from one waste pile to another. The top cards of the waste piles and the stock pile are available to play on foundations. Cards cannot be moved from one foundation to another. There is one redeal.