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Questions & Answers to Games & Rules

At this page we will publish frequently asked and important questions related to the WRO 2020 games.

The answers on this page should be seen as additions to the rules and will be used for the WRO International Final. 

Please be aware that in your country local competitions may follow slightly different rules, contact your National Organizer for questions relating the games & rules in your country. Click on the button to find your member country.

Member Countries

Q&A WeDo Regular

The judge will remove the fire.

On the WeDo Regular field all colored elements of an area - including the lines and some little trees - are seen as part of the area for the scoring.


Q&A Regular Category (all other age groups)

Our rule 6.10 mentions that the bricks should be switched off. However, we know that this can cause problems and teams are allowed to keep the bricks on.
We will change this rule for 2021 in the general rules.

The teams are not allowed to make any changes to the original parts (for example: NXT, EV3, engines, sensors, etc.)
The only exception are original LEGO® ropes and tubes, that can be cut to size.

Q&A Regular Category Elementary

We noticed that the wording in our document is not clear because we used different words (target location and target area).

It is correct to say that each Hospital / School or Residentital Area has two target areas. The robot should bring the supplies into these areas, only one supply per target area counts.

(We will not longer use the word target location.)

Q&A Regular Category Junior

For a snow element to score points, it must touch the snow depot directly (lie on the field mat) or indirectly (lie on other snow elements or the green frame). There is no direct or indirect connection if a snow element tou0ches the robot and the robot is in the snowdepot or touching other snow elements or the green frame.
If this condition is fulfilled, the top view determines the area (normal or elevated snow depot) in which a snow element is located.

It is OK to move the evalated snow depot. However, this has the consequence that the area to score points (inside the red rectangle) gets smaller and it is more difficult to score full points. For the scoring of the snow elements we will always look at the position of the snow element in the end situation (if that is inside the elevated snow depot and in the red area).


Yes, the elevated snow depot may be lifted and then lowered again.
It is important that the snow depot is completely lying on the surface again in the end situation. If snow elements lie under the frame so that the frame no longer completely touches the playing field mat, you will only receive 3 instead of 5 points per snow element.

Q&A Regular Category Senior

Sandbags need to touch the black line to earn points (for touching only or protection of the house).

However, it is not important if the sandbags are lying or standing upright in front of the house.

Yes, for Senior age group all parts of the robot count as projection.
In a situation where it is difficult to see if the projection is inside an area, the judge decides in favor of the team.

The rules say that black lines are not included in the scoring. That is true, except for the house. There the black line belongs to the house area (see the photos in the Scoring Interpretation).

The dike status card at the beginning of the round is decisive for the allocation of points. Switching the card does not bring any advantage and has no influence on the points awarded.

Our rules say "The robot can carry them at the start". This means that the evacuation notice must be placed on the robot or on the mat, touching the robot.
It is not allowed to place the evacuation notice somewhere else on the mat. If the evacuation notice is not needed, you can remove it from the field.

Q&A Football

This means that the wheel cannot be devided over both sides of the motor.

See image for clarification.



Q&A Advanced Robotics Challenge

Teams that are planning to use supportive/other controllers and programmable cameras should adhere to the following:

The main controller must be either Single board computer (SBC) or Single board microcontroller (SBM). On this controller all decision making, manipulation of sensor data and control must take place.
Other controllers can be used in a supportive role, but only to provide a means of control to the main controller to drive motors. Supportive controllers can also be used to provide a means of increasing the number of inputs and/or outputs to the main controller. The manipulation of the information sensed by the sensors should take place on the main controller and not on the supportive controller. For programmable cameras it means that camera must provide a image or a video flow to the main controller as so all further image processing will be performed by the main SBC/SBM.

Teams that are using supportive controllers must provide information (access to source code, circuit diagrams, etc.) to the judges to prove that the supportive controllers are only used to drive motors or are used as a device to increase the number of inputs/outputs for use with sensors.

The OpenMV camera is more than just a sensor, it is almost a stand alone computing unit on its own.

Refering to what is said about supportive controlers the OpenMV camera is only allowed if the camera is not used to process the images.

Teams must provide information (access to source code, circuit diagrams, etc.) to the judges to prove that processing of the images is be done by the main SBC/SBM.