Round Robin Tournament Scheduling

Schedules - You must register to Post and Download => Requests => Topic started by: Philly617 on November 21, 2024, 12:23:48 AM

Title: 8 men 8 woman, Rotating Partner Mixed Round Robin
Post by: Philly617 on November 21, 2024, 12:23:48 AM

I'm new to this site but am trying to figure out schedule for below format.

- 8 men
- 8 women
- Each person plays with every mixed partner which means 8 games
- playing on 4 courts
- How do I best randomize games so each person plays against everyone else and not playing the same person 3 or 4 times

Title: Re: 8 men 8 woman, Rotating Partner Mixed Round Robin
Post by: Ian Wakeling on November 21, 2024, 03:39:59 AM

See here for a similar question (https://www.devenezia.com/round-robin/forum/index.php?topic=4275.msg7251#msg7251).

and consider replies #1 or #8 here (https://www.devenezia.com/round-robin/forum/index.php?topic=492.msg6973#msg6973) for 7 or 9 round schedules.  The first is spouse avoiding so there is one other opposite sex player who you never meet.

Title: Re: 8 men 8 woman, Rotating Partner Mixed Round Robin
Post by: Philly617 on November 21, 2024, 01:58:40 PM

Ian, I did see that post, #8 as I don't have any situation where we are avoiding a spouse.

Was wondering why there were 9 rounds in that scenario.

With 8 men and 8 women.  I'm looking for 8 round scenario where each male plays with each female once?  Is that covered in your 9 rounds scenario and one of the round is duplicative and I just need to delete it?

Appreciate your help.

Title: Re: 8 men 8 woman, Rotating Partner Mixed Round Robin
Post by: Ian Wakeling on November 22, 2024, 03:40:59 AM

This is the best schedule that I have for 8 rounds:

(m06 f08 v m02 f03) (m01 f05 v m04 f06) (m03 f07 v m05 f02) (m08 f01 v m07 f04)
(m01 f08 v m07 f01) (m08 f05 v m05 f03) (m03 f02 v m06 f04) (m02 f06 v m04 f07)
(m02 f05 v m08 f02) (m04 f01 v m05 f04) (m07 f07 v m06 f03) (m01 f06 v m03 f08)
(m04 f03 v m01 f02) (m03 f05 v m07 f08) (m05 f01 v m06 f06) (m02 f07 v m08 f04)
(m08 f03 v m03 f06) (m07 f05 v m06 f07) (m04 f04 v m05 f08) (m02 f02 v m01 f01)
(m05 f07 v m01 f03) (m04 f05 v m03 f01) (m02 f04 v m07 f06) (m08 f08 v m06 f02)
(m07 f02 v m05 f06) (m04 f08 v m08 f07) (m03 f03 v m02 f01) (m01 f04 v m06 f05)
(m01 f07 v m03 f04) (m04 f02 v m07 f03) (m05 f05 v m02 f08) (m08 f06 v m06 f01)

It does contain all male/female partnerships exactly once, however the opposition pairings are not optimal.  In particular the following four pairs never oppose (m1 m8) (m4 m6) (f1 f7) (f3 f4).  Hope that helps.

Title: Re: 8 men 8 woman, Rotating Partner Mixed Round Robin
Post by: Philly617 on November 22, 2024, 08:03:55 AM

Ian, thank you very much.  Very helpful