This page summarizes rule clarifications or FAQs in question / answer format.

Question: Am I using the right rule set document?
Answer: Make sure that the document is the one listed on the rules tab of this site.

Question: Does it cost to enter the competitions?
Answer: Entry to the events is free to DPRG members and students (at any grade level).  For others, the entry fee is $10. Anyone paying a entry fee can participate in any or all of the events.

Question: Big Table Top 2 and Can-Can Soccer rules for the setup of the fields have markings made with “blue painter’s tape”. I’m wondering what properties that has for IR. I have simple drop off sensors  and am wondering if my robot thinks it reached the end of the world when it comes across a strip of tape?


Answer:  The blue tape was chosen because of its availability and its low impact on IR sensors. In Big Table Top 2, the seam between the two parts of the table is covered with blue tape to prevent tripping sensors. The uncovered seam will trip some sensors. The tape             used is “3M ScotchBlue  Original Multi-Use Painter’s Tape” available at Home Depot and similar locations. I would suggest obtaining some and determining how your sensors respond to going over it. The table top is white, a piece of poster board could be used as a simulated table top.
  The starting box is marked with black electrical tape (3/4″) and it will definitely trip an IR sensor. You must determine how to leave and reenter the starting zone.
The blue tape used in the Can Can Soccer contest is only to help aid placing robots and similar activities. It isn’t meant to be used as a navigational aid.


Question::  Can it generally be assumed that cans are “free standing”? In other words, if an obstacle is wider than a single can, or smaller than a single can – it can’t be a can?


Answer:  The rules for Can Can Soccer say that the cans are randomly placed. The judge places the cans just before the competition. No practice runs are made on the final can positions.       The judge will mark the course with small pieces of blue painter’s tape, so that cans will be in the same location for all competitors.
 Now we get to past experiences versus what is stated in the rules.
The judge generally will:
  1.  Place the cans so that they are divided equally on the two halves  of the field.
  2.  The cans are at least 2 inches apart.
  3.  The cans are set no closer than 6 inches from a wall.
However, the judge is not required to do these things.

You would be safe in saying that an obstacle smaller than a single can isn’t a can. I also think you would be safe to say an obstacle larger than 2 cans and a couple of inches isn’t a can. If an obstacle moves, it is definitely not a can.


Question: In Can-Can Soccer there are supposed to be 6 cans on the field, and the game ends when one robot has placed 7 cans into the opponent’s goal ….. I highly doubt my robot will have to look for the 7th can, I’m just curious. Do you bring scored cans back onto the field? If yes, are they placed in the same spots as the original 6?


Answer:  If you look at the rules closely, you will see at the top that a round is divided into two 5 minute halves. The cans are returned to the original locations at the start of the 2nd half, and robots exchange the ends of the field. You can reset your robot at this time.
The idea is to equalize any unintentional advantage that one end of the field might have. Unintentional advantages could be can placement or lighting variations. A round actually consists of an opportunity to collect 12 cans. Collecting 7 cans wins the round.
Can placement is the same for all rounds of a tournament level. The can positions can be changed between tournament levels by the judge. However, the judge isn’t required to change them.

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