"Schafkopf (German: [ˈʃaːfkɔpf], lit. 'sheep's head'), also called Bavarian Schafkopf, is a popular German trick-taking card game of the ace–ten family for four players that evolved, towards the end of the 19th century, from German Schafkopf. It is still very popular in Bavaria, where it is their national card game played by around two million people, but it also played elsewhere in Germany and in Austria. It is an official cultural asset and important part of the Old Bavarian and Franconian way of life. Schafkopf is a mentally demanding pastime that is considered "the supreme discipline of Bavarian card games"[1] and "the mother of all trump games."[2] "

https://en.wikipedia.org/wiki/Schafkopf