20 golfers, 6 days

[jdwvu2]

Can someone help me with...

20 golfers, 6 days...sets of foursomes such that nobody plays together twice.

Thank you so much.

[Ian Wakeling]

Please have a look at this thread which is discusses the same problem.  It's possible to have 5 days of play with nobody together twice, but not six.  There is a schedule there for six rounds there but you end up with six of the pairings repeated twice.