For a short period in the 1980s, the competition was played during the summer months.

The competition was not played in 1986, 1998, and 1999.

The competition was played through a 17 groups of 20 teams each.

The competition was played in a group of 5 teams.

The competition began again in 1940 and was played every year (except for 1948) until 1951.

The competition was normally played early in the season, until 1960.

The competition would have been played in the Olympic system.

The competition was played during the 2002-03 to 2006-07 seasons.

One year later for the first time all five competitions were played.

From 2011-12 season, the competition was played as an Under-19 tournament.