Round Robin Tournament Scheduling
Schedules - You must register to Post and Download => Requests => Topic started by: Hooked on October 03, 2023, 03:42:41 PM
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Help please. This is breaking my brain!
I run a 16 person double tennis round robin. It runs for 36 weeks/rounds from Sep - May each year.
We have 3 courts so only 12 people can play each week/round, while the remaining 4 sit.
I want to have MAXIMUM variability so each person plays with and against as many others as possible. I also want to MINIMIZE repeats as much as possible, but especially with partners. Opponents too if possible, but less of a concern than partners.
I also want to avoid people sitting out more than 1 week/round at a time.
I've tried Euchre rotation charts and other tools to help but I'm still not happy with the results.
Any help and or solutions very much appreciated in advance!
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I don't have any software that will do 36 weeks. My instinct is that you should aim to use a modified whist schedule for the first 20 weeks, at which point there should be balance with all pairs partnered once and opposed twice. The schedule below does this and I believe there are only two people who get to sit out twice in a row (player 8 in rounds 8 and 9, and player 16 in rounds 12 and 13).
( 2 4 v 5 8) ( 7 9 v 10 13) (12 14 v 15 3)
(16 1 v 9 14) ( 3 10 v 12 13) ( 6 15 v 7 11)
(16 6 v 14 4) ( 8 15 v 2 3) (11 5 v 12 1)
(16 11 v 4 9) (13 5 v 7 8) ( 1 10 v 2 6)
(16 3 v 11 1) ( 5 12 v 14 15) ( 8 2 v 9 13)
(16 8 v 1 6) (10 2 v 4 5) (13 7 v 14 3)
(16 13 v 6 11) (15 7 v 9 10) ( 3 12 v 4 8)
( 4 6 v 7 10) ( 9 11 v 12 15) (14 1 v 2 5)
(16 4 v 12 2) ( 6 13 v 15 1) ( 9 3 v 10 14)
(16 9 v 2 7) (11 3 v 5 6) (14 8 v 15 4)
(16 14 v 7 12) ( 1 8 v 10 11) ( 4 13 v 5 9)
( 5 7 v 8 11) (10 12 v 13 1) (15 2 v 3 6)
( 3 5 v 6 9) ( 8 10 v 11 14) (13 15 v 1 4)
(16 2 v 10 15) ( 4 11 v 13 14) ( 7 1 v 8 12)
(16 7 v 15 5) ( 9 1 v 3 4) (12 6 v 13 2)
(16 12 v 5 10) (14 6 v 8 9) ( 2 11 v 3 7)
(16 5 v 13 3) ( 7 14 v 1 2) (10 4 v 11 15)
(16 10 v 3 8) (12 4 v 6 7) (15 9 v 1 5)
(16 15 v 8 13) ( 2 9 v 11 12) ( 5 14 v 6 10)
( 6 8 v 9 12) (11 13 v 14 2) ( 1 3 v 4 7)
That's not a complete solution I know, but perhaps you can throw away 4 rows above and use it again for rounds 21 to 36. If you do this reassign player names to the numbers so you don't repeat exactly the same rounds.
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Thank you for this. Had never heard of a whist schedule so I've still a lot to learn. Appreciate the suggested rotation chart too! Much appreciated!