Round Robin Tournament Scheduling
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31
Requests / 36 Players in foursomes
« Last post by Sifo-Dyas on April 04, 2024, 08:53:29 AM »
Hello,
I know, there's a solution of 36 Players playing in foursomes in 11 rounds. Every Player won't Play two Other Players.

Is there a possibility, that theese missing pairings are groups of 3 Players, so you can get
- 11 rounds in foursomes (33 opponents)
- 1 round in threesomes (the Last 2 opponents)
And everybody plays everyone ones?

(There's a solution for 24 Players playing 7 foursomes and ohne threesome and every Other Player ones)

Thank you
32
Requests / Re: 10 player whist, 3 x 3 + 2 x 2 volleyball
« Last post by Ian Wakeling on April 02, 2024, 03:33:48 AM »
To have something with whist-style balance I think that there would need to be 45 rounds, with each player having exactly 27 3x3 games and 18 2x2 games.  However, I guess this is too many rounds?  How would you feel if one player was always in the 3x3 game, but the other 9 players were balanced? I think there is a solution in 18 rounds for that.
33
Requests / Re: Round Robin help needed
« Last post by Ian James on April 01, 2024, 05:03:06 AM »
Thanks again Ian

Regards
Ian James
34
Requests / Re: Changing Triples Round Robin - 11 Players, 1 Court
« Last post by Ian Wakeling on April 01, 2024, 03:29:59 AM »
Hi Brian,

The following schedule should work.  Each pair of players meets exactly 3 times, either once as partners and twice as opponents, or twice as partners and once as opponents.

  ( 1  7 10) v ( 5  6  9)
  ( 2  8 11) v ( 6  7 10)
  ( 3  9  1) v ( 7  8 11)
  ( 4 10  2) v ( 8  9  1)
  ( 5 11  3) v ( 9 10  2)
  ( 6  1  4) v (10 11  3)
  ( 7  2  5) v (11  1  4)
  ( 8  3  6) v ( 1  2  5)
  ( 9  4  7) v ( 2  3  6)
  (10  5  8) v ( 3  4  7)
  (11  6  9) v ( 4  5  8)

Hope that helps,

Ian
35
Requests / Re: 12-Team Round Robin, First and Last Weeks Fixed
« Last post by hofa29 on March 28, 2024, 08:55:12 PM »
THANK YOU! 
36
Requests / Re: 12-Team Round Robin, First and Last Weeks Fixed
« Last post by Ian Wakeling on March 28, 2024, 04:42:12 AM »
Here is a solution that should work for you where the 11 weeks are the rows.  Additionally the columns are balanced having each team once or twice.  Hope that helps.

( 1  4) ( 2 11) ( 3 12) ( 5  8) ( 6 10) ( 7  9)
( 2 12) ( 6  8) ( 3  5) ( 9 11) ( 4  7) ( 1 10)
( 8 10) ( 9 12) ( 2  6) ( 4  5) ( 7 11) ( 1  3)
( 2  8) ( 3  9) ( 1 11) ( 4 10) ( 5 12) ( 6  7)
(10 11) ( 5  7) ( 4 12) ( 1  6) ( 2  3) ( 8  9)
( 3 11) ( 6 12) ( 4  8) ( 7 10) ( 1  9) ( 2  5)
( 5  9) ( 3 10) ( 2  7) ( 1 12) ( 8 11) ( 4  6)
( 1  7) ( 4 11) ( 5 10) ( 2  9) ( 3  6) ( 8 12)
( 7 12) ( 1  5) ( 6 11) ( 3  8) ( 4  9) ( 2 10)
( 6  9) ( 2  4) ( 1  8) ( 3  7) (10 12) ( 5 11)
( 5  6) ( 7  8) ( 9 10) (11 12) ( 1  2) ( 3  4)
37
Requests / 12-Team Round Robin, First and Last Weeks Fixed
« Last post by hofa29 on March 27, 2024, 05:16:46 PM »
Hi there, trying to implement a 12-team round robin where the first and last week have fixed match pairings. The others can be random for all I care. Have poked around for an algo solution and come up empty. Also tried brute-forcing it but I'm losing my mind. If there's anyone who can do this elegantly/efficiently I'd appreciate. 

Conditions: 
Week 1
1-4
2-11
3-12
5-8
6-10
7-9


Week 11
1-2
3-4
5-6
7-8
9-10
11-12
38
Requests / Changing Triples Round Robin - 11 Players, 1 Court
« Last post by brianenright3 on March 26, 2024, 11:33:54 AM »
Hoping for help on a switching triples round robin. 11 players, ideally partner with each other player twice & against each player three times. Ian, if you see this, it would be very similar to the 12 team version you made here:

https://www.devenezia.com/round-robin/forum/index.php?topic=1117.msg2887

Thanks in advance for any help!!

-Brian
39
Requests / Re: Round Robin help needed
« Last post by Ian Wakeling on March 25, 2024, 02:54:23 PM »
Hi Ian,

Have a look at the attached schedule in the Excel file.  I have highlighted the 'same-club' matches with the purple background.  Note that Club 6 only hosts once - there is no way of avoiding this unless either Club 7 or Club 8 never host.

Hope that helps,

Ian
40
Requests / Re: Round Robin help needed
« Last post by Ian James on March 24, 2024, 02:31:04 PM »
Hi again Ian

Our situation has changed again.

Your help with a revised draw would be greatly appreciated.

New scenario;

8 clubs supply teams.
4 clubs have 3 teams, 2 clubs have 2 teams and 2 clubs have 1 team.
All  clubs are used as venues equivalent to the number of teams entered.
As previously, I have one condition that none of the roundrobin generating websites allow me to manage.

I want to ensure that when 2 teams from the same club play one another, the match is played on their home course.


Regards
Ian
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