Päckchen is a German card game of the patience genre.
The four Aces are laid on the table as the foundations on which the suit families will be built in ascending order from Two to King.
[1] To begin with the player checks to see if there are any cards e.g. Twos that can be built straight away onto the foundations.
The stock so formed is now turned and, without being shuffled, cards are placed back on the table in new packets of four.
[1] Play continues in this way until either the patience is solved or no more moves are possible.