Have fun in the complicated yet exciting Switchback Solitaire! This game is played with 2 decks of standard playing cards with all the King cards removed, and your task is to move all cards to 4 foundations by suit according to the following order: A, 2, 3, 4, 5, 6, Q, J, 10, 9, 8, 7, 7, 8, 9, 10, J, Q, 6, 5, 4, 3, 2, A. When the game starts, 4 aces will be dealt to the foundations in the middle of the circle, and 12 upturned cards will be dealt to the spaces around them. The remaining cards will be upturned and placed to the stock pile at the top right corner, and the 4 discard piles at the bottom right corner will be left empty. Cards from the stock pile, the circle or the discard piles can all be moved to the foundations. Each space on the circle can only be occupied by one card, but each of the discard piles can hold multiple cards in any suit and sequence. A card on the discard pile can be moved to the circle, but a card on the circle cannot be moved back to the discard pile. The stock pile allows only one deal, but you have one chance to shuffle the cards on the discard piles by pressing the Shuffle button. Can you conquer the whirlwind maze of cards and come out victorious?