Round Robin Tournament Scheduling

Recent Posts

91
Perfect.  Thanks a million!!!
92
Use the whist schedule for 8 players to have everyone partner once with each other, and oppose each other twice.  To see a schedule, click on "visit the pages that inspired the forum" at the top of the page, then click on 'Whist tables' and select 8 items. Slice this schedule up so that week 1, is round 1 table 1, week 2 is round 1 table 2, week 3 is round 2 table 1, etc.
93
I'd like to think I'm a relatively smart guy but I'm a complete spaz when it comes to figuring out schedules.

We have 8 guys who play pickleball regularly. Doubles matches, one court.  I've searched to try to find a way to randomize the matchups, so that we don't have the same 4 players every other week.  I just wanted to edit and make it clear, only 4 players per week.  Looking to randomize the 4 players and their pairings and matchups.  I'm sorry if I wasn't clear originally.

Any help or direction would be greatly appreciated.  Thank you all in advance.
94
Requests / Re: 12-player whist tournament - schedule adjustment
« Last post by Ian Wakeling on June 04, 2024, 12:22:57 PM »
I tried, but I can not do any better than the schedule below.  All pairs of players partner exactly once, but the opposition pairings are not balanced - most players have 1 or 2 players who they oppose 3 times, and 1 or 2 other players who they oppose once.  The schedule may have less mistakes than your original, so it may be useful.

(1  5 v  2 11) (3  7 v  6 12) ( 4  8 v 9 10)
(1 11 v  4  6) (2  8 v  7 12) ( 3 10 v 5  9)
(1  6 v 10 12) (2  4 v  3  8) ( 5 11 v 7  9)
(1  8 v  3  5) (2 12 v 10 11) ( 4  9 v 6  7)
(6 10 v  8 11) (4 12 v  2  5) ( 3  9 v 1  7)
(5 10 v  4  7) (9 11 v  3 12) ( 6  8 v 1  2)
(2  7 v  4 11) (1  9 v  8 10) ( 5 12 v 3  6)
(5  7 v  1 10) (2  6 v  3  4) (11 12 v 8  9)
(8 12 v  4  5) (2 10 v  6  9) ( 1  3 v 7 11)
(1 12 v  7  8) (4 10 v  3 11) ( 5  6 v 2  9)
(7 10 v  2  3) (6 11 v  5  8) ( 1  4 v 9 12)
95
Requests / Re: 12-player whist tournament - schedule adjustment
« Last post by larstm on June 03, 2024, 04:23:41 PM »
Hi Ian, 

I supposed so. The rounds played so far are as follows: 

Round 1: 
1, 5 vs 2, 11 
3, 7 vs 6, 12 
4, 8 vs 9, 10 


Round 2: 
1, 11 vs 4, 6 
2, 8 vs 7, 12 
3, 10 vs 5, 9

Round 3:
1, 6 vs 10, 12 
2, 4 vs 3, 8 
5, 11 vs 7, 9 

Round 4:
1, 8 vs 3, 5 
2, 12 vs 10, 11 
4, 9 vs 6, 7 

The main goal is to finish a proper 11 round whist schedule given these rounds. I assumed after quick assessment of these 4-5 rounds that all was correct, only to find out later that players in later rounds are in the same pair as earlier in the tournament. 

My conclusion so far is indeed that there is no easy solution to this, if any. 

Best,
Lars
96
Requests / Re: 12-player whist tournament - schedule adjustment
« Last post by Ian Wakeling on June 03, 2024, 10:44:16 AM »
Hi Lars,

I think it possible that there are many 4 round schedules that can not be completed into a full 11 round whist schedule, and that applies even if the 4 rounds in question don't have any mistakes.  It's a hard problem, as a computer search to complete the schedule is probably the only way.  Can you post the entire schedule as I may be able to see where things went wrong.

Thanks,

Ian
97
Requests / 12-player whist tournament - schedule adjustment
« Last post by larstm on June 02, 2024, 06:23:54 PM »
Hi there, 

Thanks for having me on the forum. I am currently breaking my head over the following: 
We are playing a 12 player whist card game tournament throughout the year. I have setup a schedule for it, and we have played 4 rounds, all good so far. However, I just noticed the software I used for the scheduling has everything correct for the first few rounds, but starts making mistakes then. I didn't check this properly when we started. The question now is whether there is a way to finish the round robin whist schedule for the rest of the rounds, keeping up the 4 rounds that were already played. 

Any input or help is much appreciated! 

Cheers,
Lars 
98
Requests / Re: 12 Team-Beer Olympics Schedule
« Last post by CaitlinRose on May 23, 2024, 08:34:56 AM »
THANK YOU SO MUCH! YOU HAVE NO IDEA HOW LONG WE HAVE SPENT TRYING TO FIGURE THIS OUT!!
99
Requests / Re: 12 Team-Beer Olympics Schedule
« Last post by Ian Wakeling on May 23, 2024, 02:26:19 AM »
Look at the 12 team schedule in reply #1 here. The 1st 6 rows could be part 1 of your schedule, then play rows 7 to 11 as part 2, and if you want replay row 6 at the very end.
100
Requests / 12 Team-Beer Olympics Schedule
« Last post by CaitlinRose on May 22, 2024, 03:44:35 PM »
Hi! I am looking to create a 12 team beer olympics schedule with 2 rounds of 6 games that are played simultaneously. Essentially, I need a schedule for 66 games playing over 6 rounds (if that makes sense)? I saw your 6 round schedule, and that worked great for my 1st round, my 2nd round is where I am having trouble. I need all teams to only play each other once. THANK YOU!