A round-robin of six teams must be spread out over two days. Play four rounds the first day, and the fifth game as the first round on the second day. Because no team has a bye during the round-robin, no team has an unfair advantage for the games that follow the round-robin. For some of the formats, where there are lots of games, you might consider making the round-robin games to 13.
Commonly, tournament schedulers like to pit the top two seeds against each other during the last round of a round-robin. This is not a good idea, however, when the round-robin is spread over two days because then the top two seeds might be playing each other twice on the second day. Make sure that these two teams play each other on the first day.
Be sensitive to the fact that some teams might be sticking around overnight only to play in a single round-robin game when they have already been eliminated on the first day. Such a team may not show up, and this creates all sorts of problems. One way to avoid this is to have a leisurly start on the first day and only play three round. Then, the second day involves two games of round-robin, and two rounds to finish the four-team single elimination. Another possibility, is to use the option below.
There are two advantages to this format. First, a team can only get eliminated by losing a game (i.e., there is no possiblity of a team going home an account of a point-differential). Second, a team can lose all four games on the first day and still have an incentive to show up the second day, because, theoretically, they can still win the tournament.
For some of the formats, where there are lots of games, you might consider making the round-robin games to 13.
1 2 3 4 5
- - - - -
1 - 5 4 3 2 6 1 v 5 2 v 4 3 v 6
2 - 4 3 6 1 5 1 v 2 3 v 5 4 v 6
3 - 6 2 1 5 4 1 v 6 2 v 5 3 v 4
4 - 2 1 5 6 3 1 v 3 2 v 6 4 v 5
5 - 1 6 4 3 2 1 v 4 2 v 3 5 v 6
6 - 3 5 2 4 1
1 -----
C -
4 ----- -----_
A -------- _
5 ----- E _ ___________
2 ----- _ first place
D - _
3 ----- -----
B --------
6 -----
1 -----
C -
4 ----- -----_
A -------- _
5 ----- E _ _____
2 ----- _
D - _ winner E: first place
3 ----- ----- loser E: second place
B -------- winner F: third place
6 ----- loser F: fourth place
LC ----- winner G: fifth place
F -----
LD -----
LA -----
G -----
LB -----
A1 -----
C -
A3 ----- -----_
A -------- _
B2 ----- E _ _____
B1 ----- _
D - _ winner E: first place
B3 ----- ----- loser E: second place
B -------- winner F: third place
A2 ----- loser F: fourth place
LC ----- winner G: fifth place
F -----
LD -----
LA -----
G -----
LB -----
A1 -----
C -----------
B1 ----- first place
A2 -----
A -----_
B3 ----- _
D _-----_
A3 ----- _ _
B ----- _
B2 ----- _ ------------
_ second place
_
LC -----