need schedule for 20 people at 4 tables - 5 rounds

[kap]

I'm having a New Year's Eve party and will be having a euchre tournament.  There are 20 people playing euchre (maybe 18).  There will only be four tables.  We don't want to be playing all night.  We would like to have a bye table each round to give people a break.  If we only played 5 or 7 rounds, what would the schedule look like?

Thanks

[Ian Wakeling]

From the options that you give I can only make things work if you have 20 players and 5 rounds with each player having one break each.   In the schedule below each player's 4 partners and 8 opponents and all different.

   Table 1         Table 2       Table 3        Table 4       Break
(10 20 v 11 19) (16 15 v 3 14) (1  6 v 5 17) ( 7 12 v  8 4) (2  9 18 13)
( 6 16 v 12 20) (17 11 v 4 15) (2  7 v 1 18) ( 8 13 v  9 5) (3 10 19 14)
( 7 17 v 13 16) (18 12 v 5 11) (3  8 v 2 19) ( 9 14 v 10 1) (4  6 20 15)
( 8 18 v 14 17) (19 13 v 1 12) (4  9 v 3 20) (10 15 v  6 2) (5  7 16 11)
( 9 19 v 15 18) (20 14 v 2 13) (5 10 v 4 16) ( 6 11 v  7 3) (1  8 17 12)

Have a good party.

Ian.