Summarize what is the Spengler Cup

Context: The Spengler Cup is an annual invitational ice hockey tournament held in Davos, Switzerland. First held in 1923, the Spengler Cup is often cited as the oldest invitational ice hockey tournament in the world. The event is hosted by the Swiss team HC Davos and played each year in Davos from 26 December to 31 inclusively. Currently, all games are held at the Eisstadion Davos.

It was originally devised by Dr. Carl Spengler as a means to promote teams from German-speaking Europe, who might have suffered ostracism in the aftermath of World War I. Eventually, the tournament grew well beyond expectations. Many of Europe's most prestigious clubs and national programs have appeared, including Soviet, Czechoslovak, Swedish, German, and Finnish powerhouses. Through its history, club or national teams from 13 countries have won the tournament, with Team Canada winning the most cups as a club while various teams from Switzerland have won the most cups for one country.

Among non-European organizations, Team Canada, Team USA, nationally ranked U.S. collegiate teams, reigning AHL Calder Cup and Ontario Hockey Association champions, and even Team Japan have competed for the Spengler Cup. Since at least 1990, Team Canada has been the only participant from North America, with the exception of the AHL's Rochester Americans in 1996 and 2013.

In the 2018 tournament, Finnish club team KalPa from the city of Kuopio defeated Team Canada 2–1 in the final. The game was decided in the 8th round of a shootout, the first series of game-winning shots in tournament history that determined the winner of the Spengler Cup.

The Spengler Cup tournament was not played in 2020 or 2021 due to the COVID-19 pandemic. In the 2022 tournament, Swiss club team HC Ambrì-Piotta defeated Sparta Prague 3–2 in the final; with the game decided in the 5th round of a shootout.

Answer: The Spengler Cup is an annual invitational ice hockey tournament held in Davos, Switzerland . First held in 1923, the tournament is often cited as the oldest in the world . The event is hosted by the Swiss team HC Davos . All games are held at the Eisstadion Davos inclusively .