Round Robin Tournament Scheduling

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91
Requests / Re: 14 Player Round Robin Doubles Tournament on 3 courts
« Last post by PBInfoHelp on March 08, 2022, 09:22:26 PM »
Ian,

Can you be so kind to post what the schedule would be like for OPTION 1?

Thanks so kindly!
92
Requests / Re: Tenpin bowling leauge
« Last post by Ian Wakeling on March 06, 2022, 06:14:13 AM »
Hi Chris,

The most balanced way of doing this is to have an 11 round league, where every bowler gets to play against every other bowler exactly twice.  For example:

 (8  5  1) (12  3  4) (10 11  2) ( 7  9  6)
 (8  4  9) ( 6 12 10) (11  1  7) ( 2  5  3)
 (4 10  5) ( 9 11  3) ( 1  2 12) ( 7  8  6)
 (1  6 10) ( 9  5  7) ( 3  8 12) ( 2  4 11)
 (6 12 11) (10  7  4) ( 3  1  5) ( 9  2  8)
 (4  6  2) ( 5 10  8) ( 3 11  7) (12  9  1)
 (2 10  9) ( 3  6  8) (11  4  1) ( 5  7 12)
 (1 10  3) ( 8  2  7) (12  9  4) ( 5 11  6)
 (4  7  3) (11  8 10) ( 1  6  9) (12  2  5)
 (2  3  6) ( 5  9 11) ( 4  8  1) (10  7 12)
 (9  3 10) ( 6  5  4) (11 12  8) ( 7  1  2)

For a shorter alternative with a mixed format, you could try the schedule in reply #1 here. This involves 4 rounds in the format above, and then a final round where you would have 3 lanes, and 4 bowlers per lane.
93
Requests / Tenpin bowling leauge
« Last post by ChrisRicher on March 06, 2022, 05:18:40 AM »
Hi can anybody help please

We run a ten pin bowling leauge for fun which has grown to 12 bowlers and we use 4 lanes (ie 3 bowlers per lane) we bowl as individuals and not in teams. im trying to sort out a round robin system but soon realised it was almost impossible to work, so have searched you outfor any help possible, thanks for any help you can offer
94
I found some old code to improve the schedule above.  Now each table is two-vs-two.

( 1  4 v 17  9) (18 12 v  2 19) ( 3  8 v  5  7) (11 10 v 15  6) (13 14 v 16 20)
( 7 10 v 14 20) ( 8 17 v  2 12) (19  3 v 11  9) (16  4 v  5 15) (18 13 v  1  6)
(13  8 v 14 19) (16  9 v 17 10) ( 2 15 v  1  3) ( 7 18 v  4 11) (12  5 v 20  6)
(14 17 v  3  6) (18  9 v  8 15) (12 11 v  5 10) ( 4 20 v 19  1) (13 16 v  7  2)
( 9  2 v 20  5) ( 7 19 v 15 17) (12  1 v 11 14) (16  6 v  8  4) (13  3 v 10 18)
(17 16 v 11 20) (18 14 v  9  5) (19  6 v  3  2) ( 8  7 v 10  1) (12 13 v  4 15)
(11 15 v  2 14) ( 8 20 v  4  3) (17  5 v  1 13) ( 6 12 v  7  9) (18 19 v 10 16)
( 4  2 v 14 10) (16  1 v  3 12) ( 6  7 v 19  5) (15 18 v 17 20) (13 11 v  8  9)

I believe all partnerships are different, and there are only two repeated opposition pairs (1,17) & (5,6).
95
I don't have a way of making the full schedule that you are looking for.  However, I can make an assignment of the 20 players to 5 tables such that everyone sits at a table with everyone else at least once, and at most twice - so the social mixing aspect is optimal.  You could use this as the basis of a tournament, you just need to assign the tables of 4 to 2 teams of 2.  Hope that is of some help.

(1 4 17 9) (2 12 19 18) (3 8 7 5) (11 10 6 15) (20 14 16 13)
(7 10 14 20) (12 17 2 8) (19 3 9 11) (15 4 5 16) (6 13 18 1)
(13 8 19 14) (10 9 16 17) (1 15 2 3) (4 18 11 7) (12 5 20 6)
(6 17 3 14) (18 9 15 8) (5 11 10 12) (19 20 4 1) (7 16 13 2)
(20 2 5 9) (17 19 15 7) (11 1 14 12) (16 6 8 4) (10 3 13 18)
(17 16 20 11) (9 14 18 5) (2 6 3 19) (8 7 1 10) (4 13 12 15)
(14 15 11 2) (3 20 8 4) (13 5 1 17) (9 12 7 6) (18 19 10 16)
(14 2 4 10) (16 1 12 3) (5 7 6 19) (15 18 17 20) (8 11 9 13)
96
Requests / Re: URGENT REQUEST... Am I Screwed?
« Last post by Maarty15 on March 03, 2022, 10:33:08 AM »
IAN!!!!!   You are a LEGEND.   Is there any chance you live close enough to me for me to buy you a beer??   
I had a friend volunteer to drop out, but your matrix actually allows me to bring in another buddy too instead.

I honestly cannot thank you enough!
97
Requests / Re: URGENT REQUEST... Am I Screwed?
« Last post by Ian Wakeling on March 03, 2022, 04:40:28 AM »
26 players, 5 courts and 13 rounds, with each player getting 10 games and 3 byes is something that might work.  For example:

  (25 10 v 26 12) (21  8 v 18 15) (24  5 v 22 16) ( 2 13 v  7  3) (11  1 v 19 23)  (20 14  9  4  6 17)
  (26 11 v 14 13) (22  9 v 19 16) (25  6 v 23 17) ( 3  1 v  8  4) (12  2 v 20 24)  (21 15 10  5  7 18)
  (14 12 v 15  1) (23 10 v 20 17) (26  7 v 24 18) ( 4  2 v  9  5) (13  3 v 21 25)  (22 16 11  6  8 19)
  (15 13 v 16  2) (24 11 v 21 18) (14  8 v 25 19) ( 5  3 v 10  6) ( 1  4 v 22 26)  (23 17 12  7  9 20)
  (16  1 v 17  3) (25 12 v 22 19) (15  9 v 26 20) ( 6  4 v 11  7) ( 2  5 v 23 14)  (24 18 13  8 10 21)
  (17  2 v 18  4) (26 13 v 23 20) (16 10 v 14 21) ( 7  5 v 12  8) ( 3  6 v 24 15)  (25 19  1  9 11 22)
  (18  3 v 19  5) (14  1 v 24 21) (17 11 v 15 22) ( 8  6 v 13  9) ( 4  7 v 25 16)  (26 20  2 10 12 23)
  (19  4 v 20  6) (15  2 v 25 22) (18 12 v 16 23) ( 9  7 v  1 10) ( 5  8 v 26 17)  (14 21  3 11 13 24)
  (20  5 v 21  7) (16  3 v 26 23) (19 13 v 17 24) (10  8 v  2 11) ( 6  9 v 14 18)  (15 22  4 12  1 25)
  (21  6 v 22  8) (17  4 v 14 24) (20  1 v 18 25) (11  9 v  3 12) ( 7 10 v 15 19)  (16 23  5 13  2 26)
  (22  7 v 23  9) (18  5 v 15 25) (21  2 v 19 26) (12 10 v  4 13) ( 8 11 v 16 20)  (17 24  6  1  3 14)
  (23  8 v 24 10) (19  6 v 16 26) (22  3 v 20 14) (13 11 v  5  1) ( 9 12 v 17 21)  (18 25  7  2  4 15)
  (24  9 v 25 11) (20  7 v 17 14) (23  4 v 21 15) ( 1 12 v  6  2) (10 13 v 18 22)  (19 26  8  3  5 16)
98
Requests / Re: URGENT REQUEST... Am I Screwed?
« Last post by Maarty15 on March 02, 2022, 05:25:05 PM »
If it is easier I can push to 26 if that gives anybody ideas.
99
Requests / URGENT REQUEST... Am I Screwed?
« Last post by Maarty15 on March 02, 2022, 02:35:18 PM »
I accidently forgot to register a player, so here is my situation:
I have 5 courts
I have 25 contestants for mens doubles.  
Ideally I would like each player to get 9-13 games
Random opponents or grouped as long as not too much repetition.

Can this be done or am I going to have to kick someone???

Any help would be amazingly appreciated. 
100
Looking to host a tournament. Want to try and move people around as much as possible so everyone hopefully sits at a table with everyone else at least once.