The second league is called the B2, also comprising 6 teams.

As of the 2012 season, the league comprises seven teams.

The league will comprise ten teams, one more than in the previous season.

In the 1943-44 season, the eastern group comprised five teams while the western had seven clubs.

During this final season the league comprised seven teams in two conferences.

The South division will comprise eighteen teams for the 2011-12 season.

The North division will comprises eighteen teams for the 2011-12 season.

The West division comprises nineteen teams for the 2011-12 season.

Comprising teams from 238 different nations and available in 27 languages, the game is played by around 12,000 users.

The Challenge is open only to teams comprised of current challenge or university students.