Before the event (usually the night before) print off a list of the robots that are signed up before the event and cut them up so each robot has its own slip. if any robots do not arrive, or you have extra robots on the day that weren't signed up before then just hand write them on a piece of paper and add them in.

Then when you want to do the draw sort the slips into teams and robot that you actually have, you should have something that looks a bit like this:

(i'm going to do 16 robots as an example but this works for however many robots/teams you have )

(letters are same team, numbers are robots in that team)

Code: Select all

`A1 B1 C1 D1 E1 F1 G1`

A2 B2 C2 D2 E2

A3 B3 C3

A4

now decide how many ( 2, 4 or 8 ) and which size groups ( 4-16 ) you are going to use

(i'm using 4 groups of 4) (best to use more smaller groups, so 8 groups of 8 instead of 4 groups of 16 is easier to work with)

starting with the teams with 4 robots put one robot from each 4-robot team in to a hat (or box) and pick one out randomly

(i'm going to pick A as it's the only team with 4 robots in this example)

you now need to give each robot in the team you just picked out a group, either by getting the person standing nearest to you but not involved in the draw (or by using a random number generator) to pick a number representing a group

The first robot from the team (the one you picked out of the box) then goes into this group

If the number picked is 1 then robot A1 goes into group1

Code: Select all

`Group1 Group2 Group3 Group4`

A1

then repeat for the other robots in this team

(making sure you do not put two robots from one team in the same group)

so you end up with one pile of names for each group:

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`Group1 Group2 Group3 Group4`

A1 A3 A4 A2

now repeat for the 3-robot teams

(B and C)

(I picked B1 out of the hat so I do team B first)

randomly put each robot in that team in a group

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`Group1 Group2 Group3 Group4`

A1 A3 A4 A2

B1 B3 B2

then repeat for other 3-robot teams until they are all done

(making sure you have no more robots than spaces in each group)

Code: Select all

`Group1 Group2 Group3 Group4`

A1 A3 A4 A2

C1 B1 B3 B2

C2 C3

same again for 2-robot teams(D and E)

Code: Select all

`Group1 Group2 Group3 Group4`

A1 A3 A4 A2

C1 B1 B3 B2

D1 C2 C3

D2

now group 2 is full so do not put any more robots into that group

(sometimes you do have to move robots around if you are going to end up with two robots from one team in the same group, just be careful not to put two robots from the same team in the same group)

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`Group1 Group2 Group3 Group4`

A1 A3 A4 A2

C1 B1 B3 B2

D1 C2 E1 C3

D2 E2

now put all the single-robot teams into the hat and draw out randomly and fill up the gaps to fill each group

Code: Select all

`Group1 Group2 Group3 Group4`

A1 A3 A4 A2

C1 B1 B3 B2

D1 C2 E1 C3

G1 D2 F1 E2

once you have the 4 separate groups put all robots in group 1 into the hat and draw out to determine who is fighting who

Group1

A1 Vs G1

D1 Vs C1

write these fights onto the sheets or type into Antlog and then draw the other groups in the same way

Group2

B1 Vs D2

A3 Vs C2

Group3

A4 Vs B3

E1 Vs F1

Group4

A2 Vs B2

C3 Vs E2

And you have a draw that doesn't have any robots fighting other robots in their own team

Often the draw is done during the lunch break or while someone else is finishing off the warm up (non-spinner) as it saves some time, but it only takes about 30 mins to do the draw for 60+ robots

It is sometimes easier to have as few people as possible involved in the draw as with any more than 2/3 people it just gets too confusing as there are too many people trying to all do different things at once and something will probably end up going wrong

If you need the double-elimination sheets or a copy of the Antlog spreadsheet they are downloadable from this thread(latest version will be at the end)

http://www.robotwars101.org/forum/viewtopic.php?f=9&t=1250

james