Enter number of teams OR team names
With any luck this should avoid two teams
from the same venue both playing at home in the same round.
For example in a league of ten teams the teams in pairs 1 & 6, 2 & 7, 3 & 8, 4 &
9, and 5 & 10 should not both be playing at home.
If actual team names are being entered you will want to space out teams from the
same venue in accordance with this 'rule'.
To achieve this teams may not play in a strict home and away alternate sequence.