Round Robin Tournament Scheduling

16 teams, 12 rounds, 5 events

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Jay

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on: August 30, 2023, 07:09:11 PM
Hi. I have been struggling for days trying to figure out a way (if it actually exists) to create a schedule that accomplishes the following: 
16 teams playing five different games over 12 rounds. 
Game 1 (e.g. cornhole) is played by each team 3 times
Game 2 is played by each team 3 times
Game 3 is played by each team 3 times 
Game 4 is played by each team 1 time 
Game 5 is played by each team 1 time
Game 6 is played by each team 1 time

If I need to add a 7 game or remove game 6 that is ok. 
I’d also like to avoid any teams playing each other more than once. 

My event is Friday night. I realize that this is a huge ask with a short fuse but I had nowhere else (that I know of) to turn. 

Any help would be GREATLY appreciated!! 
Thank you! 


Ian Wakeling

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Reply #1 on: August 31, 2023, 03:48:23 AM
[Post moved to requests]

If I read your post correctly, then you are expecting everyone to play in each round, which means that you must be prepared to have multiple games of Game 1, Game 2 and Game 3 going on simultaneously.  In which case you can use the following schedule:

 G1    G1    G1    G2    G2    G2    G3    G3    G3    G4    G5    G6
(---) (K M) (J N) (C G) (I O) (---) (---) (F H) (B E) (D P) (A L) (---)
(---) (---) (L M) (K N) (D H) (J O) (---) (---) (G I) (C F) (E P) (B A)
(C B) (---) (---) (A M) (L N) (E I) (K O) (---) (---) (H J) (D G) (F P)
(G P) (D C) (---) (---) (B M) (A N) (F J) (L O) (---) (---) (I K) (E H)
(F I) (H P) (E D) (---) (---) (C M) (B N) (G K) (A O) (---) (---) (J L)
(K A) (G J) (I P) (F E) (---) (---) (D M) (C N) (H L) (B O) (---) (---)
(---) (L B) (H K) (J P) (G F) (---) (---) (E M) (D N) (I A) (C O) (---)
(---) (---) (A C) (I L) (K P) (H G) (---) (---) (F M) (E N) (J B) (D O)
(E O) (---) (---) (B D) (J A) (L P) (I H) (---) (---) (G M) (F N) (K C)
(L D) (F O) (---) (---) (C E) (K B) (A P) (J I) (---) (---) (H M) (G N)
(H N) (A E) (G O) (---) (---) (D F) (L C) (B P) (K J) (---) (---) (I M)
(J M) (I N) (B F) (H O) (---) (---) (E G) (A D) (C P) (L K) (---) (---)

Where the 16 players are A to P, and where the 12 rows are the 12 rounds.  So the first three columns are all assigned to Game 1, so in round 2 there is only one game of cornhole, but in round 5 there are 3 games of cornhole.  Does that work?  It's best to register with the forum as then you will be able to reply here. Posts to the comments section are moderatered and I may not see it straight away.
« Last Edit: August 31, 2023, 03:52:58 AM by Ian Wakeling »


Soccer2426

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Reply #2 on: August 31, 2023, 10:34:41 AM
Thank you so much for the quick response!! This is great!   My only logistical issue (that i apologize for not mentioning originally)is that i only have the ability/materials to play 2 of each game in any given round.  I can play 2 of all games in a given round - just can do three of any of them.  Is there a way to adjust for this? 

Thanks again, Jay


Ian Wakeling

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Reply #3 on: August 31, 2023, 12:17:26 PM
Jay,

Not a problem.  It's possible to rearrange the columns from the schedule above to give:

 G1    G1    G1    G2    G2    G2    G3    G3    G3    G4    G5    G6
(---) (I O) (B E) (K M) (---) (D P) (J N) (---) (A L) (C G) (F H) (---)
(---) (D H) (G I) (---) (J O) (C F) (L M) (---) (E P) (K N) (---) (B A)
(C B) (L N) (---) (---) (E I) (H J) (---) (K O) (D G) (A M) (---) (F P)
(G P) (B M) (---) (D C) (A N) (---) (---) (F J) (I K) (---) (L O) (E H)
(F I) (---) (A O) (H P) (C M) (---) (E D) (B N) (---) (---) (G K) (J L)
(K A) (---) (H L) (G J) (---) (B O) (I P) (D M) (---) (F E) (C N) (---)
(---) (G F) (D N) (L B) (---) (I A) (H K) (---) (C O) (J P) (E M) (---)
(---) (K P) (F M) (---) (H G) (E N) (A C) (---) (J B) (I L) (---) (D O)
(E O) (J A) (---) (---) (L P) (G M) (---) (I H) (F N) (B D) (---) (K C)
(L D) (C E) (---) (F O) (K B) (---) (---) (A P) (H M) (---) (J I) (G N)
(H N) (---) (K J) (A E) (D F) (---) (G O) (L C) (---) (---) (B P) (I M)
(J M) (---) (C P) (I N) (---) (L K) (B F) (E G) (---) (H O) (A D) (---)

at which point the 3 sets of 3 columns for G1,G2 & G3 can be collapsed down to 3 sets of 2.

 G1    G1    G2    G2    G3    G3    G4    G5    G6
(I O) (B E) (K M) (D P) (J N) (A L) (C G) (F H) (---)
(D H) (G I) (J O) (C F) (L M) (E P) (K N) (---) (B A)
(C B) (L N) (E I) (H J) (K O) (D G) (A M) (---) (F P)
(G P) (B M) (D C) (A N) (F J) (I K) (---) (L O) (E H)
(F I) (A O) (H P) (C M) (E D) (B N) (---) (G K) (J L)
(K A) (H L) (G J) (B O) (I P) (D M) (F E) (C N) (---)
(G F) (D N) (L B) (I A) (H K) (C O) (J P) (E M) (---)
(K P) (F M) (H G) (E N) (A C) (J B) (I L) (---) (D O)
(E O) (J A) (L P) (G M) (I H) (F N) (B D) (---) (K C)
(L D) (C E) (F O) (K B) (A P) (H M) (---) (J I) (G N)
(H N) (K J) (A E) (D F) (G O) (L C) (---) (B P) (I M)
(J M) (C P) (I N) (L K) (B F) (E G) (H O) (A D) (---)

In fact the last 3 columns could also be collapsed if you had a scenario where you wanted teams to play 4 different games 3 times each.  I hope it goes well on Friday.


Soccer2426

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Reply #4 on: August 31, 2023, 01:51:24 PM
THANK YOU, THANK YOU!!! This worked perfectly.  You are a lifesaver!
Have a great weekend.
Jay