Round Robin Tournament Scheduling

30 person whist doubles

rmoriarty · 4 · 4553

rmoriarty

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on: January 13, 2017, 10:25:56 AM
Hi,

I'm looking for a schedule for a 30 person (15 doubles teams) whist format for badminton. It seems there will be a bye but that's okay.

Thank you!

Rene


Ian Wakeling

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Reply #1 on: January 13, 2017, 11:52:34 AM
Hi Rene,

Are the doubles partnerships fixed? Or do they vary from round to round.   If it's the former, then you can use an ordinary round robin tournament schedule for 16 players - follow the 'Schedules' Link near the top of this page and click on 16 items.   Ignore player 1, this is the ghost, the partner of the ghost is the team with the bye.

Ian


rmoriarty

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Reply #2 on: January 13, 2017, 01:00:45 PM
Vary round per round. Play with each person 1 time, against the others 2 times.


Ian Wakeling

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Reply #3 on: January 15, 2017, 05:49:48 AM
It is impossible to have a schedule with this balance - since the number of possible pairs of players is odd (435).  I have found the schedule below which I think is a reasonable compromise, there are 30 rounds and every player has exactly 2 byes. Each player has 28 different partners, opposing 27 of the other players twice and the remaining 2 players just once.


  ( 7  8 v  5 13) (11 19 v  3 17) (22 21 v 25 28) (10 20 v 16  9) ( 4 15 v 18 23) (24  6 v 30 14) (29  2 v 27 12)  ( 1 26)
  ( 8  9 v  6 14) (12 20 v  4 18) (23 22 v 26 29) (11 21 v 17 10) ( 5  1 v 19 24) (25  7 v 16 15) (30  3 v 28 13)  ( 2 27)
  ( 9 10 v  7 15) (13 21 v  5 19) (24 23 v 27 30) (12 22 v 18 11) ( 6  2 v 20 25) (26  8 v 17  1) (16  4 v 29 14)  ( 3 28)
  (10 11 v  8  1) (14 22 v  6 20) (25 24 v 28 16) (13 23 v 19 12) ( 7  3 v 21 26) (27  9 v 18  2) (17  5 v 30 15)  ( 4 29)
  (11 12 v  9  2) (15 23 v  7 21) (26 25 v 29 17) (14 24 v 20 13) ( 8  4 v 22 27) (28 10 v 19  3) (18  6 v 16  1)  ( 5 30)
  (12 13 v 10  3) ( 1 24 v  8 22) (27 26 v 30 18) (15 25 v 21 14) ( 9  5 v 23 28) (29 11 v 20  4) (19  7 v 17  2)  ( 6 16)
  (13 14 v 11  4) ( 2 25 v  9 23) (28 27 v 16 19) ( 1 26 v 22 15) (10  6 v 24 29) (30 12 v 21  5) (20  8 v 18  3)  ( 7 17)
  (14 15 v 12  5) ( 3 26 v 10 24) (29 28 v 17 20) ( 2 27 v 23  1) (11  7 v 25 30) (16 13 v 22  6) (21  9 v 19  4)  ( 8 18)
  (15  1 v 13  6) ( 4 27 v 11 25) (30 29 v 18 21) ( 3 28 v 24  2) (12  8 v 26 16) (17 14 v 23  7) (22 10 v 20  5)  ( 9 19)
  ( 1  2 v 14  7) ( 5 28 v 12 26) (16 30 v 19 22) ( 4 29 v 25  3) (13  9 v 27 17) (18 15 v 24  8) (23 11 v 21  6)  (10 20)
  ( 2  3 v 15  8) ( 6 29 v 13 27) (17 16 v 20 23) ( 5 30 v 26  4) (14 10 v 28 18) (19  1 v 25  9) (24 12 v 22  7)  (11 21)
  ( 3  4 v  1  9) ( 7 30 v 14 28) (18 17 v 21 24) ( 6 16 v 27  5) (15 11 v 29 19) (20  2 v 26 10) (25 13 v 23  8)  (12 22)
  ( 4  5 v  2 10) ( 8 16 v 15 29) (19 18 v 22 25) ( 7 17 v 28  6) ( 1 12 v 30 20) (21  3 v 27 11) (26 14 v 24  9)  (13 23)
  ( 5  6 v  3 11) ( 9 17 v  1 30) (20 19 v 23 26) ( 8 18 v 29  7) ( 2 13 v 16 21) (22  4 v 28 12) (27 15 v 25 10)  (14 24)
  ( 6  7 v  4 12) (10 18 v  2 16) (21 20 v 24 27) ( 9 19 v 30  8) ( 3 14 v 17 22) (23  5 v 29 13) (28  1 v 26 11)  (15 25)
  (27  3 v  4 14) (19 25 v  7 24) (30 11 v  2 22) (10 23 v  6  8) (15  9 v 29 16) ( 1 13 v 20 28) (12 18 v 17 21)  ( 5 26)
  (28  4 v  5 15) (20 26 v  8 25) (16 12 v  3 23) (11 24 v  7  9) ( 1 10 v 30 17) ( 2 14 v 21 29) (13 19 v 18 22)  ( 6 27)
  (29  5 v  6  1) (21 27 v  9 26) (17 13 v  4 24) (12 25 v  8 10) ( 2 11 v 16 18) ( 3 15 v 22 30) (14 20 v 19 23)  ( 7 28)
  (30  6 v  7  2) (22 28 v 10 27) (18 14 v  5 25) (13 26 v  9 11) ( 3 12 v 17 19) ( 4  1 v 23 16) (15 21 v 20 24)  ( 8 29)
  (16  7 v  8  3) (23 29 v 11 28) (19 15 v  6 26) (14 27 v 10 12) ( 4 13 v 18 20) ( 5  2 v 24 17) ( 1 22 v 21 25)  ( 9 30)
  (17  8 v  9  4) (24 30 v 12 29) (20  1 v  7 27) (15 28 v 11 13) ( 5 14 v 19 21) ( 6  3 v 25 18) ( 2 23 v 22 26)  (10 16)
  (18  9 v 10  5) (25 16 v 13 30) (21  2 v  8 28) ( 1 29 v 12 14) ( 6 15 v 20 22) ( 7  4 v 26 19) ( 3 24 v 23 27)  (11 17)
  (19 10 v 11  6) (26 17 v 14 16) (22  3 v  9 29) ( 2 30 v 13 15) ( 7  1 v 21 23) ( 8  5 v 27 20) ( 4 25 v 24 28)  (12 18)
  (20 11 v 12  7) (27 18 v 15 17) (23  4 v 10 30) ( 3 16 v 14  1) ( 8  2 v 22 24) ( 9  6 v 28 21) ( 5 26 v 25 29)  (13 19)
  (21 12 v 13  8) (28 19 v  1 18) (24  5 v 11 16) ( 4 17 v 15  2) ( 9  3 v 23 25) (10  7 v 29 22) ( 6 27 v 26 30)  (14 20)
  (22 13 v 14  9) (29 20 v  2 19) (25  6 v 12 17) ( 5 18 v  1  3) (10  4 v 24 26) (11  8 v 30 23) ( 7 28 v 27 16)  (15 21)
  (23 14 v 15 10) (30 21 v  3 20) (26  7 v 13 18) ( 6 19 v  2  4) (11  5 v 25 27) (12  9 v 16 24) ( 8 29 v 28 17)  ( 1 22)
  (24 15 v  1 11) (16 22 v  4 21) (27  8 v 14 19) ( 7 20 v  3  5) (12  6 v 26 28) (13 10 v 17 25) ( 9 30 v 29 18)  ( 2 23)
  (25  1 v  2 12) (17 23 v  5 22) (28  9 v 15 20) ( 8 21 v  4  6) (13  7 v 27 29) (14 11 v 18 26) (10 16 v 30 19)  ( 3 24)
  (26  2 v  3 13) (18 24 v  6 23) (29 10 v  1 21) ( 9 22 v  5  7) (14  8 v 28 30) (15 12 v 19 27) (11 17 v 16 20)  ( 4 25)