Previusly I have quite shortly writtened "The format is subject to change depending on participants". This is mainly because I have invented my own format system which suits the tournament where I want X teams to advance in each round, about equal sized groups and guarantee participants to get 2-4 games/round. This is part 1 which explains how the format is made with the number of advancing teams and group sizes, while part 2 will be about how the teams get paired in the groups.
Rather than explaining each detail on how the system is made up I will put a diagram below with all possible amounts of players in a round and leave it up to the reader to find the pattern I have used. It's also notable that in ties both team advances (more teams than planned can advance) and that in the final both will be considered winners in case of a draw.
Round details
2 teams
Final - 2 teams winner is champion
3 teams
Final - 3 teams winner is champion
4 teams
Semi Final - Teams divided in groups of 2. Top team advance, loosers play for bronze
5 teams
Semi-Final - Teams divided in groups of 2 (3 in one group). Top team advance, second best play for bronze
6 teams
Semi-Final - Teams divided in groups of 3. Top team advance, second best play for bronze
7 teams
Semi Final - Teams divided in groups of 3 (4 in one group). Top team advance, second best play for bronze
8 teams
Teams divided in groups of 2. Top team advance
9 teams
Teams divided in groups of 2 (3 in one group). Top team advance
10 teams
Teams divided in groups of 2 (3 in two groups). Top team advance
11 teams
Teams divided in groups of 2 (3 in three groups). Top team advance
12 teams
Teams divided in groups of 3. Top 2 teams advance
13 teams
Teams divided in groups of 3 (4 in one group). Top 2 teams advance
14 teams
Teams divided in groups of 3 (4 in two groups). Top 2 teams advance
15 teams
Teams divided in groups of 3 (4 in three groups). Top 2 teams advance
16 teams
Teams divided in groups of 2. Top team advance
17 teams
Teams divided in groups of 2 (3 in one group). Top team advance
18 teams
Teams divided in groups of 2 (3 in two groups). Top team advance
19 teams
Teams divided in groups of 2 (3 in three groups). Top team advance
20 teams
Teams divided in groups of 2 (3 in four groups). Top team advance
21 teams
Teams divided in groups of 2 (3 in five groups). Top team advance
22 teams
Teams divided in groups of 2 (3 in six groups). Top team advance
23 teams
Teams divided in groups of 2 (3 in seven groups). Top team advance
24 teams
Teams divided in groups of 3. Top 2 teams advance
25 teams
Teams divided in groups of 3 (4 in one group). Top 2 teams advance
26 teams
Teams divided in groups of 3 (4 in two groups). Top 2 teams advance
27 teams
Teams divided in groups of 3 (4 in three groups). Top 2 teams advance
28 teams
Teams divided in groups of 3 (4 in four groups). Top 2 teams advance
29 teams
Teams divided in groups of 3 (4 in five groups). Top 2 teams advance
30 teams
Teams divided in groups of 3 (4 in six groups). Top 2 teams advance
31 teams
Teams divided in groups of 3 (4 in seven groups). Top 2 teams advance
32 teams
Teams divided in groups of 2. Top team advance
33 teams
Teams divided in groups of 2 (3 in one group). Top team advance
34 teams
Teams divided in groups of 2 (3 in two groups). Top team advance
35 teams
Teams divided in groups of 2 (3 in three groups). Top team advance
36 teams
Teams divided in groups of 2 (3 in four groups). Top team advance
37 teams
Teams divided in groups of 2 (3 in five groups). Top team advance
38 teams
Teams divided in groups of 2 (3 in six groups). Top team advance
39 teams
Teams divided in groups of 2 (3 in seven groups). Top team advance
40 teams
Teams divided in groups of 2 (3 in eight groups). Top team advance
41 teams
Teams divided in groups of 2 (3 in nine groups). Top team advance
42 teams
Teams divided in groups of 2 (3 in ten groups). Top team advance
43 teams
Teams divided in groups of 2 (3 in eleven groups). Top team advance
44 teams
Teams divided in groups of 2 (3 in twelve groups). Top team advance
45 teams
Teams divided in groups of 2 (3 in thirteen groups). Top team advance
46 teams
Teams divided in groups of 2 (3 in fourteen groups). Top team advance
47 teams
Teams divided in groups of 2 (3 in fifteen groups). Top team advance
48 teams
Teams divided in groups of 3. Top team advance
49+ teams
Qualifier round. Top 32 teams advance
If there are more than 48 teams the tournament director might chose to either have an extra round using the same system or have a qualifier round. With 18 teams in CSC 2012 and 14 teams in CSC 2013 we will probably not get in that situation in the near future. Also, in the first round if there are 18-23 teams special pairings can be made to add up to 5 rounds instead of 4 and eliminate less players in the first round. This was used in the first round of CSC 2012.
Special round:
Round details
18 teams
Teams divided in groups of 3. Top 2 teams advance
19 teams
Teams divided in groups of 3 (4 in one group). Top 2 teams advance
20 teams
Teams divided in groups of 3 (4 in two groups). Top 2 teams advance
21 teams
Teams divided in groups of 3 (4 in three groups). Top 2 teams advance
22 teams
Teams divided in groups of 3 (4 in four groups). Top 2 teams advance
23 teams
Teams divided in groups of 3 (4 in five groups). Top 2 teams advance
One last thing is some special cases when it is time for the final round. The match for bronze will only be played if there are 2 teams fighting in the final, not if 3 teams are in the final. Everyone playing for bronze (2-5 players) will play in a single group where the winner get's bronse.
Next up is to do the pairings in the groups and that can be seen in part 2
Previusly I have quite shortly writtened "The format is subject to change depending on participants". This is mainly because I have invented my own format system which suits the tournament where I want X teams to advance in each round, about equal sized groups and guarantee participants to get 2-4 games/round. This is part 1 which explains how the format is made with the number of advancing teams and group sizes, while part 2 will be about how the teams get paired in the groups.
Rather than explaining each detail on how the system is made up I will put a diagram below with all possible amounts of players in a round and leave it up to the reader to find the pattern I have used. It's also notable that in ties both team advances (more teams than planned can advance) and that in the final both will be considered winners in case of a draw.
Top team advance, loosers play for bronze
Top team advance, second best play for bronze
Top team advance, second best play for bronze
Top team advance, second best play for bronze
Top team advance
Top team advance
Top team advance
Top team advance
Top 2 teams advance
Top 2 teams advance
Top 2 teams advance
Top 2 teams advance
Top team advance
Top team advance
Top team advance
Top team advance
Top team advance
Top team advance
Top team advance
Top team advance
Top 2 teams advance
Top 2 teams advance
Top 2 teams advance
Top 2 teams advance
Top 2 teams advance
Top 2 teams advance
Top 2 teams advance
Top 2 teams advance
Top team advance
Top team advance
Top team advance
Top team advance
Top team advance
Top team advance
Top team advance
Top team advance
Top team advance
Top team advance
Top team advance
Top team advance
Top team advance
Top team advance
Top team advance
Top team advance
Top team advance
Top 32 teams advance
If there are more than 48 teams the tournament director might chose to either have an extra round using the same system or have a qualifier round. With 18 teams in CSC 2012 and 14 teams in CSC 2013 we will probably not get in that situation in the near future. Also, in the first round if there are 18-23 teams special pairings can be made to add up to 5 rounds instead of 4 and eliminate less players in the first round. This was used in the first round of CSC 2012.
Special round:
Top 2 teams advance
Top 2 teams advance
Top 2 teams advance
Top 2 teams advance
Top 2 teams advance
Top 2 teams advance
One last thing is some special cases when it is time for the final round. The match for bronze will only be played if there are 2 teams fighting in the final, not if 3 teams are in the final. Everyone playing for bronze (2-5 players) will play in a single group where the winner get's bronse.
Next up is to do the pairings in the groups and that can be seen in part 2