Round Robin Tournament Scheduling

Recent Posts

71
Requests / Re: Schedule please 2 teams of 8 players
« Last post by bartdev on February 17, 2025, 06:52:47 AM »
Thanks Ian, That worked a treat. I did look at that schedule but couldn't get my head around the changes required.
Many thanks, chatgpt - 0 metaAl - 0   Ian  Winner
Appreciate your time and effort, Regards, Bart
72
Requests / Re: Schedule please 2 teams of 8 players
« Last post by Ian Wakeling on February 17, 2025, 03:02:23 AM »
If you take the schedule in reply#1 here, ignore the extra round, then take each game of the form (H W vs H W) and rearrange the four players to give (H H vs W W), then if H and W are the two teams, then I believe the schedule will meet the requirements that you have set.
73
Requests / Schedule please 2 teams of 8 players
« Last post by bartdev on February 16, 2025, 09:21:22 PM »
Hi,
Have searched with little luck so posting a request.
2 teams of 8 players in a doubles competition Team A against Team B
Criteria - 4 courts, 7 rounds, Team A playing with a different partner each round
against different opposition in Team B also playing with a different partner each round.
Chatgpt and MetaAI both failed to produce a schedule meeting all the criteria.

Thanks in advance, Cheers, Bart
74
Requests / Re: Yard Games Tournament
« Last post by YardGamesCo on February 14, 2025, 11:47:19 AM »
What would be the best way to fill in the remaining three rounds with as few repeats as possible?

Any suggestions?


75
Requests / Re: Yard Games Tournament
« Last post by YardGamesCo on February 14, 2025, 08:10:47 AM »
Thank you Ian!

For someone who is both a math lover and event nerd, this forum and what do are just incredible.
76
Requests / Re: Yard Games Tournament
« Last post by Ian Wakeling on February 14, 2025, 04:12:21 AM »
There is an old Excel file called foursome-tournaments-v4 in this thread that you can download if you are logged in.  This will give you a solution for the related problem of 20 teams in 5 rounds with 5 games, but unfortunately I don't think there is a solution for 24 teams, the most you can manage is the 3 rounds of play shown.  Note that these schedules involve dividing the teams into 4 sub-groups, but you don't have to tell the players about this.
77
Requests / Yard Games Tournament
« Last post by YardGamesCo on February 12, 2025, 11:52:34 AM »
Hey,

Not sure if this one is possible, my inclination tells me no, but here goes.

I have 6 different games being played. I have 24 teams.

I would like to break the teams into groups of 4 and have a round robin at each game, but id like the grouping to be different for each game.
So each team would play a total of 18 games(a 3 game round robin of each) by the end.

Is it possible to do this with out a team playing a game more than once or repeating opponents?
78
You schedule looks pretty good to me.  I have come up with the following where the referees are in square brackets:

(B C)  (G F)  [D A]
(E H)  (D A)  [B C]
(C J)  (B I)  [E H]
(G D)  (F A)  [I J]
(I E)  (H J)  [G F]
(G B)  (F C)  [H A]
(H A)  (E D)  [G I]
(J F)  (G I)  [E D]
(H C)  (E B)  [J F]
(D I)  (A J)  [B C]
(E F)  (G H)  [I J]
(A B)  (C D)  [E F]
(I J)        [C]
   
   
(C G)  (A E)  [B D]
(B D)  (F H)  [A G]
(I A)  (J E)  [C H]
(B H)  (D F)  [G J]
(C I)  (J G)  [A E]

I am not sure what criteria you will used to evaluate how good the schedule is, so let me know what you think.
79
We are hosting a volleyball tourney where we guarantee 8 matches.  We have 10 team pools and want to give 7 pool play matches to seed teams - then move all teams to a 10 team playoff bracket based on pool seeding (I have all tie break procedures laid out).  This is a youth tournament played on 2 courts over the course of 2 days.  We need a work team on each of the pool play matches so will have 6 teams playing or working at each round.  Preference is to give as much equal rest and work / play time as possible. 

We have 80 teams across 6 divisions using 16 courts so this is a fun one.  Anyone have a program or work anything like this n the past.  I have my schedules from last couple of years but hoping someone has another view?  If no other options - any suggesting that can improve the below?

Example:



80
Requests / Re: 13 team random mixed doubles schedule - 5 games each
« Last post by Ian Wakeling on January 22, 2025, 03:50:35 AM »
Is reply #9 here, from a conversation we had about three years ago, something close to what you are looking for?  If not, can you specify more about the format of play - how many courts, and how many rounds?