Recent Posts

71

Requests / Re: PBTD for 8 teams with more venues

« Last post by Innesw20 on February 21, 2025, 05:43:10 PM »

Afraid not - it does need to be partitioned: a team at a venue at most once in rounds 1-4 and at most once in rounds 4-7.

I imagine it would look something like this, if it can work for 5 venues (rounds in rows, venues in cols):
(   ) (1 x) (x x) (x x) (x x)
(x x) (x x) (   ) (x x) (1 x)
(x x) (   ) (1 x) (x x) (x x)
(1 x) (x x) (x x) (x x) (   )
(x x) (x x) (1 x) (   ) (x x)
(x x) (   ) (x x) (x x) (1 x)
(   ) (x x) (x x) (1 x) (x x)
Ideally each team should play on each venue at least once in the competition, but that may be asking too much.

72

Requests / Re: PBTD for 8 teams with more venues

« Last post by Ian Wakeling on February 21, 2025, 04:02:01 AM »

The PBTD might not be necessary.  Could you use the regular balanced schedule instead.  Go here and enter 8 items and 'balanced'.

73

Requests / Partitioned Balanced Tournament Design (PBTD) for 8 teams with more venues

« Last post by Innesw20 on February 20, 2025, 05:58:32 AM »

In the game of lawn bowls, if there are only 8 teams in a competition there would frequently be more rinks available (the standard green has eight) than are required to play each round (4).

The mathematicians have shown that there does not exist a PBTD for 8 teams and 4 venues.

I was wondering whether a PBTB-equivalent for 8 teams could be constructed where the number of venues is 5 instead of 4? If not, would 6 venues allow it? Or is it just not mathematically possible? This is essentially easing the restriction on the number of venues that applies in the standard definition of PBTDs.

74

Requests / Re: 16 Players Foursomes League

« Last post by Ian Wakeling on February 20, 2025, 03:03:37 AM »

Please see reply #1 that I wrote here.  It will give you both 10 and 15 rounds and more if you want.  Note that the 16 players are numbered zero to 15.

75

Requests / 16 Players Foursomes League

« Last post by Sifo-Dyas on February 19, 2025, 09:30:02 AM »

Hallo, I need Help for scheduling 16 Players in 10 (maybe 15) rounds of Foursomes.

Every Player should meet every other Player twice (three Times) but no three or four Players should meet more then ones.

Thank You very much 

76

Requests / Re: Schedule please 2 teams of 8 players

« Last post by bartdev on February 17, 2025, 06:52:47 AM »

Thanks Ian, That worked a treat. I did look at that schedule but couldn't get my head around the changes required.
Many thanks, chatgpt - 0 metaAl - 0   Ian  Winner
Appreciate your time and effort, Regards, Bart

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Requests / Re: Schedule please 2 teams of 8 players

« Last post by Ian Wakeling on February 17, 2025, 03:02:23 AM »

If you take the schedule in reply#1 here, ignore the extra round, then take each game of the form (H W vs H W) and rearrange the four players to give (H H vs W W), then if H and W are the two teams, then I believe the schedule will meet the requirements that you have set.

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Requests / Schedule please 2 teams of 8 players

« Last post by bartdev on February 16, 2025, 09:21:22 PM »

Hi,
Have searched with little luck so posting a request.
2 teams of 8 players in a doubles competition Team A against Team B
Criteria - 4 courts, 7 rounds, Team A playing with a different partner each round
against different opposition in Team B also playing with a different partner each round.
Chatgpt and MetaAI both failed to produce a schedule meeting all the criteria.

Thanks in advance, Cheers, Bart

79

Requests / Re: Yard Games Tournament

« Last post by YardGamesCo on February 14, 2025, 11:47:19 AM »

What would be the best way to fill in the remaining three rounds with as few repeats as possible?

Any suggestions?

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Requests / Re: Yard Games Tournament

« Last post by YardGamesCo on February 14, 2025, 08:10:47 AM »

Thank you Ian!

For someone who is both a math lover and event nerd, this forum and what do are just incredible.