Need Help with 12 team schedule

[sbrock25]

We are scheduling an academic challenge (brain bowl) with 12 teams.  

There will be four teams playing in each room for three rounds

I would like to schedule 4 teams each round (three rounds) with the fewest teams having to play each other twice.

Any help would be greatly appreciated

[Ian Wakeling]

Unfortunately, there is no fair solution to this problem.  Please read this thread for more info.

About the best you can do is something like this:


  ( 9  8  5  6) (12 10 11  4)  (3  2  1  7)
  (10  5  6  7) ( 9 11 12  1)  (4  3  2  8)
  (11  6  7  8) (10 12  9  2)  (1  4  3  5)
  (12  7  8  5) (11  9 10  3)  (2  1  4  6)

where 12 pairs of teams never meet and 18 pairs of teams play twice.

[sbrock25]

Thanks for the help, Great website.