Round Robin Tournament Scheduling

Recent Posts

11
Comments and Thanks / Euchre tournament
« Last post by Janet on April 16, 2025, 07:57:02 PM »
Hi,

I am holding a euchre tournament with 26 people in 2 days from now

We would like everyone to partner with each player 1 time in the tournament

We have 6 tables and assume 2 people will need to sit during each round

Are you able to draw up a schedule for us?

Thanks,

Janet
12
Requests / Re: 10 Team Quiz League with 3 Triangular Meets Per Night
« Last post by HillJackBob on April 13, 2025, 09:21:29 AM »
It should, thanks so much!
13
Requests / Re: 10 Team Quiz League with 3 Triangular Meets Per Night
« Last post by Ian Wakeling on April 11, 2025, 02:15:44 AM »
Here is a basic 8 week schedule that should work, this time there is no way to arrange it into a balanced square like the 10 teams schedule above.

(2 7 9)  (1 4 8)  (3 5 6)
(5 7 8)  (1 2 6)  (3 4 9)
(6 8 9)  (2 4 5)  (1 3 7)
(2 3 8)  (1 5 9)  (4 6 7)
(2 5 7)  (1 3 8)  (4 6 9)
(3 6 7)  (1 2 9)  (4 5 8)
(1 5 6)  (2 3 4)  (7 8 9)
(3 5 9)  (1 4 7)  (2 6 8)

Hope that works for you.
14
Requests / Re: 10 Team Quiz League with 3 Triangular Meets Per Night
« Last post by HillJackBob on April 09, 2025, 07:32:06 AM »
One team has now left the conference, and we have just 9 teams for next season.

Could you possibly whip up one of these where a 9-team conference would play each other twice each in a triangular setting, now not needing teams to have a bye week?  Should take just 8 weeks instead of ten now, I believe.
15
Requests / Re: Golf group pairings
« Last post by Ian Wakeling on April 03, 2025, 03:34:54 AM »
I think the schedule below is close to optimal.

(1 2 v  6  9)  (3 4 v 7 10)  (5 v  8)
(1 3 v  9  8)  (4 5 v 6  7)  (2 v 10)
(1 4 v  8 10)  (2 5 v 9  7)  (3 v  6)
(1 5 v 10  6)  (2 3 v 7  8)  (4 v  9)

where players 1 to 5 are group A, and players 6 to 10 are group B.  Players 1 and 7 are the two players who always play in a foursome.  Hope that helps.
16
Requests / Golf group pairings
« Last post by hoggercup on April 01, 2025, 01:40:37 PM »
I am looking for the optimum golf parings for 10 players split into 2 groups playing 4 rounds.  The rounds will be played as 2 foursomes and a twosome.  Each group will have 2 players from each team with the exception of the the twosome.  Thanks for your help!
17
Requests / Re: Beer Olympics - 5 Teams
« Last post by talkto54 on March 31, 2025, 06:13:29 PM »
THANK YOU!!!
18
Requests / Re: Beer Olympics - 5 Teams
« Last post by Ian Wakeling on March 31, 2025, 03:22:17 AM »
There really is no good solution here as you have to compromise on something.  I can offer the schedule below, where the compromise is that team 2 competes in 8 matches, while the other teams only have 7 matches each, but the schedule does have teams play each game once or twice, and all opponents once or twice.

    G1    G2    G3    G4    G5    G6
R1 (1 4) (2 3) (- -) (- -) (- -) (- -)
R2 (- -) (- -) (3 5) (1 2) (- -) (- -)
R3 (- -) (- -) (- -) (- -) (2 4) (1 5)
R4 (- -) (4 5) (- -) (- -) (1 3) (- -)
R5 (2 5) (- -) (- -) (3 4) (- -) (- -)
R6 (- -) (- -) (1 4) (- -) (- -) (2 3)
R7 (3 5) (1 2) (- -) (- -) (- -) (- -)
R8 (- -) (- -) (2 4) (1 5) (- -) (- -)
R9 (- -) (- -) (- -) (- -) (2 5) (3 4)

I thought about having 7 games, but then the best number of rounds would be 14 which is well over your limit of 10.
19
Requests / Beer Olympics - 5 Teams
« Last post by talkto54 on March 30, 2025, 04:10:55 PM »
Hi! I'm looking for a way to schedule a Beer Olympics for 5 teams. Each team must play each game and each opponent. However it's okay if teams have to play the same game or same opponent twice as long as its the same for everyone. It's also okay to have a "Bye Game."

Ideally the schedule will have 6-8 games (7 being ideal), 5 teams, and up to 10 rounds, with all of the variables being flexible except the 5 team requirement.

Any help trying to figure this out would be greatly appreciated!
20
Requests / Re: Round Robin Generator
« Last post by Ian Wakeling on March 30, 2025, 12:30:15 PM »
Here are some 6 round & 4 court schedules that may be of use for between 16 and 19 players - byes are shown inside square brackets. I am sorry that I have no way of getting balance for court or side of the net, but within a round you can consider swapping games between courts, and swapping sides of the net for a game to try to improve matters.

16 players

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

17 players (players 1 to 11 have 6 games, the rest 5 games)

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

18 players (players 1 to 6 have 6 games, the rest 5 games)

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

18 players (only player 1 has 6 games)

( 3 10 v 11 15)  ( 2  6 v  8 12)  (13  1 v  5 16)  ( 9  4 v 14  7) [17 18 19]
( 7  8 v 10 13)  ( 4 17 v  5 12)  ( 3  6 v 18  1)  (11  2 v  9 19) [14 15 16]
(17 10 v  6 14)  (16 19 v  3  4)  (18  5 v  8  9)  (15  2 v  7  1) [11 12 13]
( 5  2 v 14  3)  ( 7 16 v 12 11)  ( 6 13 v  4 15)  (17 18 v  1 19) [ 8  9 10]
( 8 11 v  1  4)  (14 15 v 19 12)  ( 9 17 v 13  3)  (10  2 v 18 16) [ 5  6  7]
( 5 19 v  7  6)  (17 15 v 16  8)  (14 18 v 11 13)  (12  9 v 10  1) [ 2  3  4]