Round Robin Tournament Scheduling

horseshoe schedule

bobbyboy · 3 · 6017

bobbyboy

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on: April 25, 2012, 09:12:34 AM
hi     I can't find a whist round robin schedule for 30 players. I am running a horseshoe league where each player has a different partner each week.  Had 31   one dropped out.    28 and 32 listed   but no 30   ??


Robert


Ian Wakeling

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Reply #1 on: April 25, 2012, 11:07:02 AM
Hi Robert,

There is no listing because it is impossible to have a balanced schedule.  In this situation, I usually try to give everyone the same number of games, so the 30 round schedule below where everyone gets 2 byes (last column) and 28 games would be my recommendation.  All the partnerships in the schedule are different, and no two players oppose more than twice.

Hope that helps.

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


bobbyboy

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Reply #2 on: April 25, 2012, 05:04:22 PM
amazing    that's it exactly        

I THANK YOU