Round Robin Tournament Scheduling

18 person euchre tourny

kyltan · 6 · 7952

kyltan

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on: February 19, 2010, 09:16:34 PM
4 tables, so 2 players have to sit out each round. each person should partner with everyone, so there are 17 rounds. my guess is that you should play each opponent twice?

can't use a 20 team setup as the bye's dont end up at the same table every time.

first round would be
1;2 V 3;4
5;6 V 7;8
9;10 V 11;12
13;14 V 15;16
17 & 18 ON BYE
« Last Edit: February 19, 2010, 09:47:26 PM by kyltan »


Ian Wakeling

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Reply #1 on: February 20, 2010, 11:50:04 AM
The best option I can suggest is to use this schedule:

(17 18 v  7 13) (16 11 v  8 10) ( 5  1 v  3 14) ( 2 12 v  9  6) (15  4)
(18  1 v  8 14) (17 12 v  9 11) ( 6  2 v  4 15) ( 3 13 v 10  7) (16  5)
( 1  2 v  9 15) (18 13 v 10 12) ( 7  3 v  5 16) ( 4 14 v 11  8) (17  6)
( 2  3 v 10 16) ( 1 14 v 11 13) ( 8  4 v  6 17) ( 5 15 v 12  9) (18  7)
( 3  4 v 11 17) ( 2 15 v 12 14) ( 9  5 v  7 18) ( 6 16 v 13 10) ( 1  8)
( 4  5 v 12 18) ( 3 16 v 13 15) (10  6 v  8  1) ( 7 17 v 14 11) ( 2  9)
( 5  6 v 13  1) ( 4 17 v 14 16) (11  7 v  9  2) ( 8 18 v 15 12) ( 3 10)
( 6  7 v 14  2) ( 5 18 v 15 17) (12  8 v 10  3) ( 9  1 v 16 13) ( 4 11)
( 7  8 v 15  3) ( 6  1 v 16 18) (13  9 v 11  4) (10  2 v 17 14) ( 5 12)
( 8  9 v 16  4) ( 7  2 v 17  1) (14 10 v 12  5) (11  3 v 18 15) ( 6 13)
( 9 10 v 17  5) ( 8  3 v 18  2) (15 11 v 13  6) (12  4 v  1 16) ( 7 14)
(10 11 v 18  6) ( 9  4 v  1  3) (16 12 v 14  7) (13  5 v  2 17) ( 8 15)
(11 12 v  1  7) (10  5 v  2  4) (17 13 v 15  8) (14  6 v  3 18) ( 9 16)
(12 13 v  2  8) (11  6 v  3  5) (18 14 v 16  9) (15  7 v  4  1) (10 17)
(13 14 v  3  9) (12  7 v  4  6) ( 1 15 v 17 10) (16  8 v  5  2) (11 18)
(14 15 v  4 10) (13  8 v  5  7) ( 2 16 v 18 11) (17  9 v  6  3) (12  1)
(15 16 v  5 11) (14  9 v  6  8) ( 3 17 v  1 12) (18 10 v  7  4) (13  2)
(16 17 v  6 12) (15 10 v  7  9) ( 4 18 v  2 13) ( 1 11 v  8  5) (14  3)


There are 18 rounds, everyone gets exactly 2 byes and gets to play with 16 different partners.  Pairs of players play in opposition either once or twice.

HTH.


Markie

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Reply #2 on: February 01, 2023, 03:49:18 PM
Hi Richard,
This schedule is working perfectly ... thanks !!
At the end of these matches I want to create 2 new schedule for the finals ... 1 to 9 and 10 to 18.
Do you have a schedule for 9 players on 2 courts ... every round has 1 "sitting it out".
I have tried the "10 player schedule" with 1 ghost but it is not working for the diversity of opponents (all 2x).
Hoping to hear from you soon.
Gr. Markie


Ian Wakeling

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Reply #3 on: February 02, 2023, 03:15:26 AM
Use this schedule form the Wiseman web site.


Markie

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Reply #4 on: March 20, 2023, 07:14:23 AM
Hi Ian, ... this works perfectly !!

Is there also a schedule for 7 players on 1 court ? ... 4 players & 3 bye's.


Ian Wakeling

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Reply #5 on: March 22, 2023, 04:28:06 AM
Perhaps you could use this schedule for 14 rounds where all pairs of players meet a total of 4 times, once or twice as partners, and 2 or 3 times as opponents.

  (5  7 v 2  1)    (6  4  3)
  (6  1 v 3  2)    (7  5  4)
  (7  2 v 4  3)    (1  6  5)
  (1  3 v 5  4)    (2  7  6)
  (2  4 v 6  5)    (3  1  7)
  (3  5 v 7  6)    (4  2  1)
  (4  6 v 1  7)    (5  3  2)
  (7  2 v 1  5)    (3  4  6)
  (1  3 v 2  6)    (4  5  7)
  (2  4 v 3  7)    (5  6  1)
  (3  5 v 4  1)    (6  7  2)
  (4  6 v 5  2)    (7  1  3)
  (5  7 v 6  3)    (1  2  4)
  (6  1 v 7  4)    (2  3  5)