(Sorry in advance - my English is not the best...)
I need a schedule for a tennis tournament. 12 players, 3 courts, 4 rounds of doubles.
I'm trying to optimize it so that every player only plays once with OR against any other player. If that is not possible than only once with another player and only once against that other player. So that every player plays with/against as many different players as possible.
I already have been trying for days but with no success... hope you can help.