Round Robin Tournament Scheduling
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12 Teams Round Robin

zyrpxdk · 2 · 4023
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zyrpxdk

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on: November 13, 2012, 04:26:34 PM
Hello.

I have made a tournament for 12 local soccer teams the past 2 years, where we have been divided into 2 groups of 6 teams, and played each other 2 times and then in the end we played number 1 group 1 against number 2 group 2, and so on..
The thing that made it a bit tricky was that it was hosted 2 different places and each time you only played 2 matches.

My problem is now that I want to create a round robin tournament for the same 12 teams BUT I want it to be placed 2 different places using 2 lanes each time and only 2 matches per round so 3 teams play 1 lane and 3 other teams play another lane.
And the difficult thing is making so you dont drive just to play 1 match and and then the other match at another stadium.
But it is okay to switch so you play from Stadium 1 lane 1 to stadium 1 lane 2 but not stadium 2 lane 1 and then stadium 1 lane 1 etc...

Etc:

Round 1

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

(or any combo using Stadium 1 lane 1 and 2, team 1-6)  but not 1-7 or 2-12. (1-6 ok and 7-12 ok) not mix

I know that in Round 6 you only will play 1 tournament match (so in general you only play 1 match, and in the other 5 you played 2 matches, but we will arrange a friendly match for each, which will have no affect on the tournament so we dont drive 50km for only 1 game :D

I know this is possibel, BUT I have tried many times now and failed miserably each time, as it simply gets to hard for me to overlook...

Please help me make it complete... :D

And make about 120 kids in Denmark happy :D

Ian Wakeling

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Reply #1 on: November 14, 2012, 05:06:09 PM
I don't see any good solutions to your problem, the closest I have would require all 12 teams to be present at the same location in the final round of play.  

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

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

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

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

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

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


The friendly matches above all occur in round 5 (columns 2 & 4).

Could you use this schedule?

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