Round Robin Tournament Scheduling
Schedules - You must register to Post and Download => Requests => Topic started by: Crusty on February 26, 2023, 10:41:42 PM
-
1) Could you suggest a round robin schedule for 12 players (doubles) in 7 rounds? I'd like each player to have a new partner each round, and to face every other player as an opponent either once or twice. Basically, I am looking for a schedule very close to the 8-round one in Ian's last reply from this thread:
https://www.devenezia.com/round-robin/forum/index.php?topic=1786.0 (https://www.devenezia.com/round-robin/forum/index.php?topic=1786.0)
except for 7 rounds instead.
2) Could you also suggest a 16-player schedule for 7 rounds with similar constraints (i.e. new partners each round, and maximizing the number of unique opponents faced) ?
Thank you!
-
Thanks for your message. Here is something that you could use for 12 players and 7 rounds:
(10 2 v 11 7) ( 6 1 v 3 9) (12 8 v 5 4)
( 4 3 v 9 7) ( 5 8 v 1 10) ( 2 11 v 12 6)
( 1 9 v 5 2) (11 3 v 8 7) ( 4 12 v 10 6)
( 7 1 v 12 10) ( 3 2 v 8 4) (11 6 v 5 9)
( 6 5 v 4 7) (11 12 v 3 1) ( 9 2 v 8 10)
( 2 4 v 11 1) ( 8 9 v 12 7) ( 3 6 v 10 5)
( 9 10 v 11 4) ( 7 6 v 1 8) ( 2 12 v 3 5)
I am still thinking about 16 players. You could use the spouse avoiding schedule here (https://www.devenezia.com/round-robin/forum/?topic=492), however everyone would have one player whom they never meet. Ideally it should be possible to find a schedule where all pairs of players meet at least once, either as partners or opponents.
-
Here is a 16 player schedule. It's not quite perfect since pairs (5,16) & (6,15) meet twice as opponents, all other pairs who meet twice do so once as partners and once as opponents.
(13 15 v 14 4) (11 6 v 2 10) (12 16 v 8 5) ( 1 9 v 7 3)
(16 7 v 13 11) ( 1 6 v 12 15) ( 8 4 v 3 14) ( 5 2 v 10 9)
( 8 16 v 6 4) ( 2 15 v 3 5) ( 9 11 v 1 13) (14 10 v 12 7)
( 8 12 v 2 13) ( 9 6 v 15 14) (10 16 v 1 3) ( 5 4 v 11 7)
( 1 2 v 4 13) ( 3 15 v 12 11) ( 6 8 v 9 7) (10 5 v 16 14)
( 7 2 v 15 16) (11 1 v 8 14) ( 4 9 v 12 10) ( 5 13 v 3 6)
(11 16 v 9 12) ( 6 5 v 4 1) (10 15 v 13 8) ( 7 14 v 2 3)
-
Thanks so much for these schedules, Ian! We will use them at our tournament this weekend. The advice you provide on this forum is much appreciated!