Round Robin Tournament Scheduling

22 team event

Soccer2426 · 4 · 418

Soccer2426

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on: August 27, 2024, 05:53:24 PM
Hi, 
You have saved my behind several times in the past (THANK YOU) and I am hoping you can do so 1 more time.  Here are the details of my event:
22 teams
4 different events
Game A - each team competes 1x
Games B, C and D - each team competes several times; ideally each team competes in each of the events the same # of times. e.g. Every team plays each of A,B and C 3 times

I'd like the event to run anywhere from 10 to 14 rounds if possible.
If i need to add a 4th Game to make things work I can do that. This game can be played 1x or 2x or 3x etc. to make this work.
If i need to add another round i can also do that.
If there is any other tweak that would make this possible i can probably do it.
I have enough equipment to run the same game 3 times (maybe 4 times) each round. e.g. 6 teams could all play game A in the first round.

The only real priority is that each team plays each game the same # of times.

I have been struggling for days to make this work b/c i did not want to bother you again but i have come up empty....
Thank you in advance for your consideration!





Soccer2426

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Reply #1 on: August 27, 2024, 11:08:11 PM
Actually….2 teams just dropped out. >:(Everything above is the same - just for 20 teams, not 22. Thank you!!


Ian Wakeling

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Reply #2 on: August 28, 2024, 04:50:05 PM
Welcome back!  I think the schedule below should work, each of the 10 rows is a round.

    G1      G2      G2      G2      G3      G3      G3      G4     G4      G4 
  (13  9) (15 18) (19  3) ( 4 11) (16  6) ( 5 17) (14  1) ( 2  7 (20  8) (10 12)
  (14 10) (11 19) (20  4) ( 5 12) (17  7) ( 1 18) (15  2) ( 3  8 (16  9) ( 6 13)
  (15  6) (12 20) (16  5) ( 1 13) (18  8) ( 2 19) (11  3) ( 4  9 (17 10) ( 7 14)
  (11  7) (13 16) (17  1) ( 2 14) (19  9) ( 3 20) (12  4) ( 5 10 (18  6) ( 8 15)
  (12  8) (14 17) (18  2) ( 3 15) (20 10) ( 4 16) (13  5) ( 1  6 (19  7) ( 9 11)
  (20  1) ( 4  6) (13 10) ( 8 17) ( 5 11) ( 9 15) ( 7 18) (19 14 ( 2 12) (16  3)
  (16  2) ( 5  7) (14  6) ( 9 18) ( 1 12) (10 11) ( 8 19) (20 15 ( 3 13) (17  4)
  (17  3) ( 1  8) (15  7) (10 19) ( 2 13) ( 6 12) ( 9 20) (16 11 ( 4 14) (18  5)
  (18  4) ( 2  9) (11  8) ( 6 20) ( 3 14) ( 7 13) (10 16) (17 12 ( 5 15) (19  1)
  (19  5) ( 3 10) (12  9) ( 7 16) ( 4 15) ( 8 14) ( 6 17) (18 13 ( 1 11) (20  2)

Or perhaps you can divide the 20 teams into 2 groups of 10 teams?  Then it is possible to schedule all games to be between group. Let me know and I can find another schedule.


Soccer2426

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Reply #3 on: August 29, 2024, 12:43:35 PM
This is perfect!!! Thank you so much.  Hopefully this was not too much trouble.
And thank you for the fast response!