Stumped

Stumped

Posers and Puzzles

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A stable personality

Near my hay.

Joined
27 Apr 06
Moves
64199
15 Aug 22
1 edit

I have a sports competition where each player has to play 5 matches against different opponents. I have 14 players which means a total of 35 matches (I think). So I need a list of 35 unique random pairings where each player appears only 5 times. Any tips, or recommended online tools?

Secret RHP coder

on the payroll

Joined
26 Nov 04
Moves
155080
15 Aug 22

Your setup reminds of the Swiss System format in chess tournaments:
https://en.wikipedia.org/wiki/Swiss-system_tournament

It's not exactly random, as you requested, but it is one way of pairing the players for 5 rounds with no repeat opponents.

Joined
18 Jan 07
Moves
12469
16 Aug 22
1 edit

Many chess federations publish pairing tables for tournaments. Here's the English one:

https://www.englishchess.org.uk/wp-content/uploads/2010/04/roundRobinPairings.pdf

You can simply use the first five rounds and ignore the rest.

A stable personality

Near my hay.

Joined
27 Apr 06
Moves
64199
16 Aug 22

Thanks to both of you.

Dave

S.Yorks.England

Joined
18 Apr 10
Moves
83883
24 Aug 22

At a drinks gathering everyone had one tumbler of scotch and soda of different strengths.I drank 15% of the scotch drunk and 13% of the soda drunk.How many of us were there

Dave

S.Yorks.England

Joined
18 Apr 10
Moves
83883
24 Aug 22

Sorry, wrong thread.See" newspaper puzzle"

Secret RHP coder

on the payroll

Joined
26 Nov 04
Moves
155080
24 Aug 22

@venda said
Sorry, wrong thread.See" newspaper puzzle"
Serves you right getting loaded before posting. 😆