Round Robin Tournament Scheduling
Schedules - You must register to Post and Download => Requests => Topic started by: mccjamb on March 11, 2021, 09:53:39 AM
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Hi, I couldn't find this solution elsewhere on the forum and unfortunately I couldn't get the workbook to open for me (user error on my part I'm sure). So, any way you have a solution for 12 players play against each other only once, on 3 courts? No limit on rounds, but fewer the better.
Thanks!
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You can simply slice up the standard round-robin for 12 players. So starting with the balanced schedule here (https://www.devenezia.com/downloads/round-robin/rounds.php?it=12&v=b1), play 'Match 1', 'Match 2', 'Match 3' as a sub-round on the 3 courts, then play 'Match 4', 'Match 5' and 'Match 6' as a new sub-round on the same 3 courts. So you will need 22 rounds to complete the round-robin.
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Ian, is your answer different if the format is 2v2?
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Apologies, my solution above is wrong. I read the OP's message and not the title! As the format is doubles play it becomes a harder problem. I have recently shown a solution for 16 players (https://www.devenezia.com/round-robin/forum/index.php?topic=1660.msg4086#msg4086)where a minimal 8 round solution is possible. Unfortunately this will not work for 12 players as the corresponding spouse avoiding schedule does not exist. Clearly a whist schedule exists with 11 rounds and all opponents exactly twice, wether the minimal solution in 6 rounds is possible, I don't know.