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.