German_Patience
German Patience is a solitaire card game which is played with two decks of playing cards shuffled together. It is an unusual game because building in the tableau or playing area is up, as opposed to building down in many others. Despite its name, it is not known if this game originated from Germany.
It is very difficult to win, and the winning odds for an average player are about 1 in 200 games. Thomas Warfield's solitaire game Bavarian is a variant that makes this an easier game.