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Stumped

Posers and Puzzles

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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?

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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.

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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.

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Thanks to both of you.

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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

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Sorry, wrong thread.See" newspaper puzzle"


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